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Scientific Papers Animal Science and Biotechnologies
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  This is an Open Access Journal Open Access journal
ISSN (Print) 1841-9364 - ISSN (Online) 2344-4576
Published by Banat´s University of Agricultural Science and Veterinary Medicine from Timisoara Homepage  [1 journal]
  • Effect of Oregano and Tea Tree Essential Oils on Bioproductive Indices of
           Broiler Chickens

    • Authors: Calin Julean, Lavinia Stef, Eliza Simiz, Adela Marcu, Ioan Pet, Marioara Nicula Neagu, Vasile Rus, Ducu Stef
      Pages: 1 - 7
      Abstract: The purpose of this experiment was to determine the effect of oregano and melaleuca essential oils administered in a dose of 250 mg/kg CF in the feeding of broiler chickens on the bioproductive indices. The biological material was represented by sexed (male) broiler chickens belonging to the ROSS 308 hybrid on which the phasial breeding (1-10d, 11-24d, 25-35d) was practiced, while observing the recommendations from the ROSS 308 Broiler Management Guide, 2014. The chickens were divided into 3 experimental variants (T0, T1, T2), with 3 replications and 10 chickens/replication. The chickens from T0 (control) have received only the basic diet, for T1 the basic diet+oregano essential oil (250 mg/kg CF) were administered, and for T2, the basic diet+melaleuca essential oil (250 mg/kg CF). During the first breeding period (0-10d), the highest value for the body weight was recorded at T1 (267.66 g), which also had the lowest feed conversion ratio (1.20 kg CF/kg WG). In the period 11-24d, in T2, the highest body weight (1034.41 g) with the feed conversion ratio 1.52 kg CF/kg WG were recorded. In the finisher phase (25-35d), T1 maintained differences compared to T0, for body weight higher 2.91% and lower 6.25%, for FCR. During the entire breeding period 1-35d, the lowest FCR was recorded in T1 (1.65 kg CF/kg WG). The difference between experimental variants was not statistically for p>0.05.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • The relationship of different measures of growth with feed efficiency in
           Central Highland bucks

    • Authors: Zeleke Tesema
      Pages: 8 - 15
      Abstract: Improving the efficiency of feed utilization is a primary goal in goat breeding strategies. Thus, different measures of feed efficiency were evaluated, their relationships with growth-related traits of the Central Highland bucks were estimated, and estimation equations for feed efficiency were developed. The measures of growth such as initial weight (IWT), final weight (FWT), absolute growth rate (AGR), relative growth rate (RGR), growth efficiency (GE), and Kleiber ratio (KR) were measured from twenty-four bucks. The feed efficiency traits were dry matter intake (DMI), feed conversion ratio (FCR), feed efficiency (FE), residual feed intake (RFI), and residual weight gain (RWG). Data were analyzed using the GLM procedure of statistical analysis system. The mean FWT, DMI, AGR, FCR, FE, RGR, GE, KR, RFI, and RWG of bucks were 26.1±2.73 kg, 801.2±102.1 g/day, 54.8±23.6 g/day, 17.6±9.44 g DMI/ g AGR, 0.07±0.02 g AGR /g DMI, 321.7±10.4 %/day, 22.1±10.6 %, 4.73±1.87 g/ kg 0.75., 0.46±0.07 g/day and -0.50±0.02 g/day, respectively. The result showed that FCR was highly correlated with AGR (r = -0.78), GE, (r = -0.77) and KR (r = -0.81). Moreover, strong correlations were observed among FE and growth-related traits (r = 0.95 for FE-AGR, 0.97 for FE-GE and 0.96 for FE-KR). The FWT (R2 = 0.47) and GE (R2 = 0.94) were the important predictors for DMI and FE, respectively. The combination of GE, KR, and RGR appeared to be more useful traits in predicting the FCR (R2 = 0.86). The GE and IWT were significantly predicted the RWG with higher accuracy (R2 = 0.95). The efficiency of feed utilization of bucks can be estimated with high accuracy using some growth-related traits. However, further research using enough sample size is imperative to ensure reliability and to enhance the accuracy of prediction.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Comparative Evaluation of Lowland Sheep Breeds under Graded Level
           Supplement Feeds, Ethiopia

    • Authors: Alemu Tarekegn Tiruneh, Solomon Abegaz Guangule, Kifetew Adane Kesete
      Pages: 16 - 25
      Abstract: Performance of three sheep breeds in the lowland areas of western Amhara, the Gumuz, Rutana and Begiet were evaluated using three levels of concentrate (400, 500 and 600 g head-1 day-1) having same Noug seed cake:Wheat bran ratio (75:25) under feedlot condition. The roughage was native grass hay which was offered adlibitum. Thirty two eight to nine old intact male sheep (12 breed-1) were randomly allotted to the dietary treatments, fed for 90 days and slaughtered at an age of approximately 12 months. Breed and diet (concentrate level) significantly affected average daily gain (ADG). Gumuz and Rutana sheep breeds achieved higher average daily gain (ADG) than Begiet. Sheep fed on concentrate L2 (500 g head-1 day-1) recorded significantly higher ADG than sheep fed on L1 and L3. As a result of better slaughter weight (SW) achieved higher hot carcass weight (HCW) was recorded by Gumuz and Begiet sheep breeds. Because of greater difference in proportion of non-carcass components and better HCW achieved relative to slaughter body weight, better dressing percentage (DP) was achieved by Gumuz. Breed and concentrate level did not improve main carcass components, edible and non- edible offals. Meat quality attributes were not influenced by breed. Among the concentrate levels L2 was optimum to improve major meat quality attributes like juiciness, flavor and over all acceptance.  Sheep supplemented with concentrate L2 had the highest net return (855.06 ETB and highest MRR (14.12) compared to the other concentrate levels. Compared to other lowland breed Gumuz and Rutana sheep breeds recorded highest net return (733.42 and 531.67 ETB) and highest MRR (10.25 and 11.42 ETB), respectively. Thus, it is recommended that use of adaptive sheep breeds (Gumuz and Rutana) to that specific environment and  use of concentrate level two (L2) are biologically efficient and potentially profitable in the feeding of growing lowland sheep to the area and other similar areas.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Sheep Production System and Farmers' Perception towards Dorper
           Crossbred Lambs in Eastern Amhara, Ethiopia

    • Authors: Mesfin Lakew Assefa
      Pages: 26 - 37
      Abstract: The study was conducted to assess the production system and farmers' perceptions of Dorper crossbreds in Eastern Amhara, Ethiopia. Data on the sheep production system and farmers' perceptions were collected using participatory rural appraisal in Kalu and Gubalafto districts. According to this survey, the average landholding in Kalu and Gubalafto districts was 0.75 and 0.55ha per household, respectively. The average number of sheep per household in Kalu (0.64TLU) was higher than in Gubalafto (0.42TLU). In the districts, sheep were virtually kept under low-input, traditional management systems; sheep production was entirely dependent on local sheep, and pure breeding was common. However, following the introduction of the Dorper sheep, few farmers were found to participate in crossbreeding activities. The primary goal of keeping sheep in Kalu and Gubalafto was to generate income with indexes of 0.31 and 0.32, respectively, followed by social security with the same index (0.24). In Kalu and Gubalafto, in approximately 77.3 and 68% of cases, respectively, children were found to be involved in sheepherding. In the Kalu district, feed scarcity and disease ranked first and second, respectively, with indexes of 0.40 and 0.27. In Gubalafto, feed scarcity ranked first with the same index (0.40), and still, the disease ranked second with a lower index (0.23). Because of their fast growth, all farmers expressed a strong desire to keep Dorper crossbreds. Farmers also reported that the 25% Dorper crossbreds had a high market demand and price due to their larger body size. In conclusion, to use Dorper sheep properly and increase the profitability of sheep producers, effective ram dissemination and breeding strategies need to be designed by considering the current production system and the farmers' needs.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Survival of Holstein Friesian heifers through to fourth calving on a
           research farm.

    • Authors: Gavan Constantin, Mihaela Riza
      Pages: 38 - 41
      Abstract: This study monitored survival up to fourth calving and reasons to culling of a number of 202 Holstein Friesian heifers on research farm at Agricultural Research and Development Station (ARDS) Simnic, Craiova. Heifers born between 2016 and 2019 were monitored from 1 months of age trough to forth calving. The survival of animals was calculated during 4 lifetime phases: (1) rearing period; (2) lactation 1; (3) lactation 2; (4) lactation 3. Also 4 longevity traits were calculated for all animals culled before forth calving: (1) age to culling; (2) herd life; (3) total lifetime days in milk (DIM); and 4 longevity index.During the rearing period 6.9% of the total heifers at 1 month did not survive until first calving (0% longevity index). Of those that did calve (n = 188), 12.7% were culled in lactation 1, with a longevity index of 28.4%. In the second lactation 15.2% of the cows that did calve for the second time (n = 164) were culled, with a longevity index of 44%, and in the third lactation 19.4% of the cows that did calve for the third time (n = 139) were culled with a longevity index of 53.5%. Of all animals recruited at 1 month of age 55.4% (n = 112/202) calved for a fourth time. The primary cause for culling was infertility. These results show that some of heifers never become productive or are culled before they reach their full lactation potential.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Quantitative Evolution of the Wild Animals Populations for Hunting from
           16-Sarlota

    • Authors: Dorel Dronca, Ioan Pet, Lavinia Stef, Gabi Dumitrescu, Liliana Ciochina Petculescu, Silvia Patruica, Mihaela Ivancia, Adela Marcu, Marioara Nicula, Ion Caraba, Sorin Voia, Silvia Erina, Mirela Ahmadi
      Pages: 42 - 46
      Abstract: The integration of Romaniainto the European Union requires special attention to the hunting populations. The observed size of an animal population, as opposed to the genetic size, is given by the number of individuals in all categories, as well as by the total number of males and females participating in the production of the descendant generation. The purpose of the present paper was to study the evolution of the observed sizes of the hunting population for 13 species of animals in the period 2016-2020, on hunting area 16-Sarlota, from TimisCounty, with a total area of 6.149 ha. The present study highlighted that on this hunting area, Cervidae family – which includes ruminants with deciduous horns, is represented by 3 species, namely Red Deer (Cervus elaphus L), Fallow Deer (Dama dama L), and Roe Deer (Capreolus carpeolus L). Our paper concludes that the decrease of the populations of Red Deer (Cervus elaphus L) species, Fallow Deer (Dama dama L) species, Roe Deer (Capreolus capreolus L) species, Wild hog (Sus scrofa L.) species, The European hare (Lepus europaeus P) species, and Common Pheasant (Phasianus colchicus L.) species, in the studied period of 2018-2019, is due to the increase of the observed size with 200% on this hunting area of Jackal (Caniș aureus L.) species, and also due to the significant presence of  the Red Fox (Vulpes vulpes L) species. We recommend the permanent monitoring and limitation of populations from the Canidae family, especially of the Jackal (Caniș aureus L.) species. For the other identified species, the population of evolutionary numbers showed that there is a good correlation between the number of individuals and their biogenic capacity. The present study recommends the revival of the existing population on this hunting area, through “blood refreshing” actions.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Growth performance and survival rate of Boer x Central Highland goat under
           extensive production system

    • Authors: Zeleke Tesema
      Pages: 47 - 54
      Abstract: This study was conducted to evaluate the growth performance and survival rate of Boer x Central Highland goats reared extensively. Besides, the prolificacy and mothering ability of Central Highland goats were evaluated. Data collected under field condition were utilized for this study. A general linear model procedure of SAS was used to analyse the growth and prolificacy data. The analyses of survival data were performed using the GENMOD procedure of SAS by a linear logit model. The overall least squares mean for birth weight (BWT), weaning weight (3MWT), six-month weight (6MWT), weight gain from birth to weaning (ADG1) and weight gain from weaning to six months of age (ADG2) for Boer crossbred goats were 2.73 kg, 10.4 kg, 14.5 kg, 84.4 g/day and 49.4 g/day, respectively. Whereas the overall least-squares mean BWT, 3MWT, 6MWT, ADG1 and ADG2 for Central Highland goat were 1.79 kg, 6.77 kg, 10.6 kg, 54.1 g/day and 50.4 g/day, respectively. Sex, birth type and year of birth were the major determinants for growth traits. The pre-weaning survival rate of crossbred goats was 81.7%. The overall mean litter size at birth, litter size at weaning and weaning rate for Central Highland does were 1.48 kids, 1.21 kids, 81.7%, respectively. The prolificacy was tended to increase with the increase in parity of does. The pre-weaning growth performance of Boer crossbreds was superior to the indigenous Central Highland goats. However, the post-weaning growth rate was found to be similar for both genotypes. Central Highland goat had a moderate prolificacy and mothering ability. There should be a further study regarding the major causes of mortality of kids reared under an extensive production system.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Analysis of the Mitochondrial Genome in Podolian Cattle Breeds

    • Authors: Mădălina Alexandra Davidescu, Madalina Alexandra Davidescu, Andrei Cristian Gradinaru, Constantin Pascal, Daniel Simeanu, Vasile Maciuc, Mihaela Ivancia, Steofil Creanga
      Pages: 55 - 59
      Abstract: Podolian cattle breeds are represented by: Romanian Grey Steppe, Iskar Grey (Bulgarian Grey), Istrian, Katerini, Ukrainian Grey and Hungarian Grey. The mitochondrial genome in cattle has a length of about 16,338 nucleotides. The majority of taurine mtDNA sequences cluster within macro-haplogroup T, which consists of six sub-haplogroups (T, T1, T2, T3, T4 and T5). Recent developments in DNA sequencing technologies provide new opportunities for the examination of genetic material in extinct or endangered species, providing a new perspective on their evolutionary history. This paper has as main purpose the analysis of the mitochondrial genome in podolian cattle breeds by consulting the most relevant research in the literature.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Analysis of the Genetic Diversity of Endangered Cattle Breeds Based on
           Studies of Genetic Markers

    • Authors: Madalina Alexandra Davidescu, Mitica Ciorpac, Bianca Maria Madescu, Ioana Porosnicu, Steofil Creanga
      Pages: 60 - 63
      Abstract: In the last 15 years, about 300 breeds out of 6,000 belonging to different species of animals have been identified by the Food and Agriculture Organization of the United Nations (FAO) as extinct. Among the cattle breeds seriously threatened with extinction are the podolian cattle from different parts of Europe. These belong to a group of very old European breeds, having ancestors in Bos primigenius. By studying molecular markers, can be obtained information on the genetic structure of endangered cattle breeds and through identification of some sections of the genome that influence certain traits, can be assess the conservation value of genetic resources of animal origin. The aim of this paper is to identify the main molecular markers used in the analysis of endangered cattle breeds.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Genetic Variations in Two Edible Frog Species (Crowned Bullfrog
           (Hoplobatrachus occipitalis) and African Clawed Frog (Xenopus muelleri))
           in Ibadan, Nigeria Using Allozyme Markers

    • Authors: Oluwakayode Michael Coker, Osamede Henry Osaiyuwu, Pius Agaji Oko, Gbenga Peter Awosan, Oluwatobi Emmanuel Fijabi
      Pages: 64 - 72
      Abstract: Attempts to determine interspecific differences in patterns of protein variation in edible frog species have been relatively few. Therefore, this study determined the genetic variation in populations of Hoplobatrachus occipitalis and Xenopus muelleri in two locations [University of Ibadan (UI) and Igbo Oloyin area (IO)] in Ibadan, Nigeria, using five allozyme loci. Eighty (80) edible frogs comprising twenty (20) live samples each of H. occipitalis and X. muelleri species from IO and UI were collected. 1ml of blood was drawn per sample via cardiac venipuncture. Plasma fractions were obtained and subjected to Cellulose Acetate Electrophoresis to determine the genetic variations at Haemoglobin (HB), Carbonic anhydrase (CA), Transferrin (TF), Albumin (AL) and Esterase (EST) loci. Test for Hardy–Weinberg Equilibrium (HWE; ), Heterozygosity [observed (Ho) and expected (He)] and Genetic differentiation (FST) were estimated. Significant deviations from HWE were observed at several loci in all the populations. Ho was higher (than He) for both populations of H. occipitalis but lower for both populations of X. muelleri. FST was 0.0559 and 0.0264 for the populations of H. occipitalis and X. muelleri, respectively. There is an indication of evolutionary forces in operation in the IO populations of H. occipitalis and X. muelleri.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • PRINCIPAL COMPONENT ANALYSIS OF MORPHOSTRUCTURAL INDICES OF NOILER
           CHICKENS

    • Authors: ABEL OLUSEGUN OGUNTUNJI, Widya Pintaka Bayu Putra, Victoria Fiyinfoluwa Ajala
      Pages: 73 - 81
      Abstract: Morphological architecture is central to description, characterization, classification and utility of a species. Six (6) morphological indices{compactness (CMP), massiveness (MAS), condition index (CID), stockiness (STK), long leggedness (LLG) and body index (BDI)} were used to describe and predict body weight of male (52) and  female (62) Noiler chickens using stepwise regression analyses of morphological indices and principal component analysis (PCA) factor scores. Descriptive analysis revealed significant (P<0.05) sexual dimorphism in favour of male in all morphological indices except (P>0.05) in STK, BDI and LLG. Two PCs accounting for 89.11% and 89.16% of total variation were extracted for male and female chickens, respectively while CMP (male, 0.961; female, 0.953), CID (male, 0.889; female, 0.907) and MAS (male, 0.833; female, 0.820) had highest correlations with BWT in PC 1 of both sexes. Stepwise regression analysis indicated that CMP was the most important predicting morphological index accounting for 73.70%; and 78.10% prediction accuracy (R2) of BWT of cocks and hens, respectively. Regression analysis of factor scores of PCs indicated that PC 1 of the two sexes yielded the best prediction models and explained 89.70% and 91.00% of total variation in BWT of male and female Noiler chickens, respectively. Sexual dimorphism is evident and application of PC factor score models is more reliable in predicting BWT of male and female Noiler chickens than interdependent morphological indices because of its orthogonality and higher prediction accuracy.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Modelling water courses pollution near livestock farms using advanced
           hydroinformatic tools

    • Authors: Erika Beilicci, Camelia Stefanescu, Robert Beilicci
      Pages: 82 - 87
      Abstract: Animal husbandry is one of the main causes of water resources pollution: groundwater, water courses and lakes. The achievement of a reliable system of collection, treatment and evacuation/storage of wastewater and animal manure resulting from the process of animal husbandry has a special importance for reducing the impact of livestock farms on environmental factors (water, air, soil). Accidents can occur during operation of these systems and wastewater and animal manure can reach into nearby water courses, determining their pollution. This is a serious problem, especially if the water taken downstream for different use: drinking water or industrial supply, water for irrigation, recreation etc. This paper aims to present a way to model the spread of pollutants in water course in the vicinity of livestock farms, using the PMWIN software, an advanced hydroinformatic tool. On the basis of the results obtained from the modelling, the competent authorities can determine the degree of the pollution and the necessary measures to be taken to reduce the negative effects on water quality.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Modelling aquifer pollution near livestock farms using advanced
           hydroinformatic tools

    • Authors: Erika Beilicci, Camelia Stefanescu, Robert Beilicci
      Pages: 88 - 92
      Abstract: Animal husbandry is one of the main causes of water pollution. Therefore, one of the important problems to be solved in the design, execution and operation of livestock farms is the achievement of a reliable system of collection, treatment and evacuation/storage of wastewater and animal manure resulting from the process of animal husbandry, so that pollutants do not infiltrate in groundwater. However, accidents can occur in the operation of these systems, and wastewater and animal manure can seep into groundwater, determining their pollution. This paper aims to present a way to model the propagation of pollutants in groundwater in the vicinity of livestock farms, using the PMWIN software, an advanced hydroinformatic tool. On the basis of the results obtained from the modelling, the competent authorities can determine the extent of the pollution and the necessary measures to be taken to reduce the negative effects on groundwater quality.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Patterns of Maternal Behaviour in Sheep

    • Authors: Ioan Tibru
      Pages: 93 - 97
      Abstract: The mother-offspring behaviour patterns were monitored in 10 ewes and their new-born lamb(s), during one month, between 1015 am and 1915 pm. Inside the shelter, the temperature ranged between 9 and 20°C and outside, there was sunny weather, with mild wind blow. The observations were made from 10 m distance, without breaking into the sheep’s flight zone. There were observed 2130 patterns of ewe-lamb interaction, belonging to 22 main manifestations of maternal behaviour. The most frequently observed behaviour in the ewes was lamb grooming (licking): licking the head of the lamb was observed 356 times (41%), followed by licking the forequarter – 265 times (30%), the back of the lamb – 131 times (15%), the abdominal area – 91 times (10%) and the perineal and/or anogenital area – 36 times (4%). Studies of maternal and neonatal behaviour in sheep contribute to development of management practices, resulting in decreased neonatal mortality, increased meat production and improvement of animal health and welfare. They also confirm the importance of ethology in the veterinary practice.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Lyophilisation of lactic bacteria with probiotic effect for production of
           starter cultures

    • Authors: Teodor Vintilă, Camelia Sava, Daniela Moț, Eniko Gaspar, Horia Barbu, Călin Julean
      Pages: 98 - 105
      Abstract: Selection of lactic acid bacteria (LAB) for probiotic effect and preservation of LAB by lyophilized have been studied. The two LAB strains belonging to Lactobacillus plantarum and Lactobacillus pentosus producing bacteriocins in inhibitory concentration for colibacilli were selected from a total of 17 tested strains. The selected strains were further tested for their ability to survive the preservation process by lyophilisation. Two methods of preserving LAB by lyophilisation were tested and the viability of cells in lyophilized products was monitored in order to obtain products used as starter cultures. The presence of inhibition zones in mixt cultures indicates the ability of LAB to inhibit the growth of E. coli bacteria due to the synthesis of bacteriocins. During three years period, the viability of lyophilized LAB was monitored. Obtained data indicate that starter cultures of LAB can be stored in the lyophilized state for at least three years in dark and cool place, and the inoculation rate can be increased after this period by 50% if the starter culture was preserved and stored by applying the described techniques.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • BIOCHEMICAL COMPOSITION OF INDIGENOUS AND IMPORTED TROUT AND SALMON

    • Authors: Elena Eugenia Mocanu, Viorica Savin, Marcel Daniel Popa, Desimira Stroe
      Pages: 106 - 110
      Abstract: Deoarece peștii sălbatici sunt o resursă finită, rolul acvaculturii în furnizarea peștilor necesară pe cap de locuitor devine din ce în ce mai important.Somonul atlantic ( Salmo salar ) și păstrăvul curcubeu (Oncorhynchus mykiss ) sunt specii de interes pentru români, bogate în grăsimi polinesaturate omega-3 și o sursă bună de proteine, fiind în același timp sărace în calorii și grăsimi saturate.Scopul acestui studiu a fost de a examina și compara compoziția biochimică, respectiv element nutritiv, a somonului atlantic și a păstrăvului curcubeu obținute din acvacultura românească și din import, care pot fi găsite pe piața românească.Rezultatul acestui studiu confirmă similitudini în ceea ce privește compoziția biochimică a somonului obținut în acvacultura românească cu somonul sălbatic din Atlantic.Păstrăvul curcubeu crescut în ferme de păstrăv din diferite zone din țara noastră, poate fi considerat o sursă de hrană valoroasă pentru consumul uman.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Histological Aspects Regarding the Antioxidant and Chelating Potential of
           Chlorella in Experimental Pb Contamination of Carassius gibelio Bloch
           species. II

    • Authors: Marioara Nicula, Gabi Dumitrescu, Diana Berzovan, Ioan Pet, Lavinia Stef, Tiberiu Iancu, Isidora Radulov, Monica Dragomirescu, Camelia Tulcan, Dorel Dronc, Mirela Ahmadi, Liliana Petculescu-Ciochina, Adela Marcu, Silvia Erina
      Pages: 111 - 119
      Abstract: The purpose of this study was to highlight the histological aspect of some tissue of Prussian carp’s specimens, subjected to sub lethal Pb intoxication with and without chlorella dietary supplementation. 90 Prussian carps, with weighing between 10 and 12 g were divided according to the following treatments for 21 days: C (without treatment), E1 (75 ppm Pb into water), E2 (75 ppm Pb into water+2% lyophilized chlorella in feed). Samples of gill, intestine, liver and kidney were removed at the end of experimental period and analyzed in light microscopy. QuickPHOTO Micro 2.2 software has been used for the histological study. Our findings are: obvious histological alterations have been observed in experimental Pb-poisoned group; active chlorella compounds cannot counteract the effects of Pb-induced oxidative stress on intestinal tissue; chlorella has been shown to be a weak Pb chelator on liver tissue; chlorella lyophilisate reduces to a small extent the toxic effects of the contaminant in the kidneys; respiratory barrier slightly affected in the group receiving chlorella in feed.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Hematological dynamics in Jumping Horses

    • Authors: Flavia Bochis
      Pages: 125 - 128
      Abstract: The study was conducted to assess the fitness of sport horses jumped in a fence course riding. and the relationship between training schedule stage and the hematological profile. A number of 22 clinically healthy horses (12 Romanian Sport Horse and 10 Thoroughbred) were monitored at the box, before saddling (S1), during training immediately; after the warming-up session (S2) and after an E level fence obstacle course ride (S3). The blood samples were taken from the jugular vein, for the determination of Leucocytes, Erythrocytes, Hemoglobin and Hematocrit. Between the Romanian Sport Horse group and the Thoroughbreds group in the S1 phase there were found significant differences for the Leucocytes (p<0.05), for the Erythrocytes number (p<0.01) and for Hemoglobin count (p<0.01). For Hematocrit, it was obtained a significant difference (p<0.01) in the S2 stage, comparing again the two horse groups. There were registered some other differences as the warming up stage and the obstacle course were finished.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • Preliminary Results on Lambs Performances of Tsigai Breed Fed with
           Different Diets

    • Authors: Elena ILIȘIU, Andreea Hortanse ANGHEL, Cristian Vasile ILIȘIU, Camelia Zoia ZAMFIR, Vasile Călin ILIȘIU, Dorina NADOLU
      Pages: 129 - 131
      Abstract: The present study was conducted to determine the effect of ram, sex and diet on growth performances of Tsigai lambs – rusty variety from birth up to 5 months.  The birth weight, weight at 28 days and weaning weight were observed on 212 lambs coming from 10 rams’ groups.  At 5 months age, the depth, eye muscle area of Longissimus dorsi, muscle perimeter and the backfat thickness covering this muscle at the cross of sectional area between the 12thand 13th ribs, and between 3-4 lumbar vertebrae was determined using ultrasonic measurements from 80 lambs (40 male from two lots - L1 and L2 – 20 heads/lot and 40 female – L3) fed with different diets. At this time, the weights of lambs at 5 months was also recorded. The overall men weight of lambs at 5 months was 42.23 kg at L1, 40.18 kg at L2 and 34.58 kg at L3. The weight at 5 months was found to be significantly affected by sex. The diet had no significant effect on growth performances of the lambs. The means for ultrasonic measurement was significantly affected by sex.  The variation observed between lots means were significant for eye muscle depth at 3-4 lumbar vertebrae and for eye muscle area, but not significant for backfat thickness, and muscle perimeter. Regarding the phenotypic correlations between ultrasound measurements with weight at 5 months, from a total of 45 traits couples 57.78% are small correlation (0.00-0.30), 20.00% are medium to high correlations (0.31-0.60) and high correlations recorded 22.22 % (0.61-1.00). Important information on body composition of lambs can be obtained practically by ultrasonic measurements on live animals. When combined in a breeding program with lamb market weights, these measurements will provide a way to increase both meat yield and the quality of Tsigai lambs.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • The effect of some pre and probiotics on the valorization of wheat straws,
           in young sheep fattening

    • Authors: Maria Sauer, Ioan Sauer, Ioan Padeanu, Daniela Valusescu, Ana Gina Armas, Mihaela Florentina Albulescu, Alexandru Constantin Grigorescu, Octavian Sorin Voia
      Pages: 132 - 136
      Abstract: The aim of this experiment was to study the effect of stimulation of ruminal symbionts on the use of wheat straw. Thus, at SCDCOC Caransebes, two groups of Turcana breed young sheep (n=20), with an average body weight of 30 kg, were established, which were maintained in the same environmental conditions. The young sheep from the LC control group and from the LE experimental group were fed with the same granulated ration consisting of a mixture of concentrates (1 kg) and wheat straw (0.45 kg). The factorial difference consisted of the supplementation of the ration, distributed to LE, with a vitamin mineral complex (Zeta complex, 1%) and yeast (Saccharomyces cerevisiae, 0.5%). The adaptation period with the new feed was 10 days. After 25 days from the beginning of the experimental period in young sheep from LE group, a significantly higher body weight, p≤0.05, by 1.21 kg compared to LC group was found, on average. The difference increased significantly p≤0.01 at the end of the experiment (after 50 days) by 1.82 kg in the conditions of improved the feed conversion rate by 8.51%. We recommend the use of pre and probiotics in the fattening lamb ration to increase productive performance.
      PubDate: 2021-10-31
      Issue No: Vol. 54, No. 2 (2021)
       
  • STUDY ON THE INCIDENCE OF TWIN LAMBINGS IN A LACAUNE SHEEP POPULATION

    • Authors: Andrei Ciobanu, Roxana Nicoleta Rațu, Dănuț Dorel Dronca, Mihaela Ivancia
      Pages: 137 - 141
      Abstract: The aim of the study was to compare the population of animals from the farm with the breed standard regarding prolificacy and also the influence that the change of the growing environment had on the reproduction indices.
      The study was effected on the “ Mănuca Mihaela P.F.A.” farm, which is located at about 11 km from the town of Flămânzi in Botoșani county. The farm covers an area of 2 hectares, and consists of a shelter with three related annexes, feed base, milking parlor and manure platform.
      Currently, the farm has a total of 282 ewes, 10 rams, 100 young females from the previous year and 12 young males from the previous year.
      Out of the total of 282 females studied, 186 of them lambed twins and out of this number, 48 of the females were primiparous and 138 were multiparous.
      In according to the literature, the Lacaune du lait sheep breed has an average prolificacy of 145% in primiparous and 170% in multiparous. In the studied farm, the prolificacy had values of 144,4 % for primiparous and 179,3 % for multiparous females.
      PubDate: 2021-11-03
      Issue No: Vol. 54, No. 2 (2021)
       
  • Research on Hematological Parameters in Aubrac Cattle Breed Exploited on
           the Conditions of Romania

    • Authors: Bianca Maria MĂDESCU, Roxana Lazar, Madalina Alexandra Davidescu, Ioana Porosnicu, Paul Corneliu Boisteanu
      Pages: 142 - 146
      Abstract: The current paper checks the health of Aubrac cattle breed, exploited in the conditions of our country, thus achieving a highlighting of hematological parameters. It is an old cattle breed from France, originating from the Aubrac mountains (south of the Central massif), which has recently become an important object of major interest for beef cattle breeders in our country. Blood samples were collected from each animal studied, then they were analyzed using the hematological analyzer scil Vet ABC.This analyzer is simple to operate and produces a complete three part differential blood count in only 90 seconds, requires only 12 µl of whole blood.  The results were highlighted by an individual blood count, including the following parameters: erythrocytes, thrombocytes, total leucocytes, hemoglobin and erythrocyte indices. In the case of one animal, were observed insignificant deviations from normal values, in terms of the number mean corpuscular volume. The other animals studied are in full health, this conclusion can be deduced from the fact that the observed values fall within the normal range of the literature.
      PubDate: 2021-11-03
      Issue No: Vol. 54, No. 2 (2021)
       
 
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