A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  

  Subjects -> VETERINARY SCIENCE (Total: 220 journals)
The end of the list has been reached or no journals were found for your choice.
Similar Journals
Journal Cover
Journal of Veterinary Medical Research
Number of Followers: 1  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2357-0512 - ISSN (Online) 2357-0520
Published by Beni-Suef University Homepage  [1 journal]
  • Effect of Flushing with Energy or Protein Sources on the Reproductive
           Performance in Ossimi Ewes

    • Abstract: This study aimed to investigate the effectiveness of flushing with corn (energizing source) and soybean (protein source) on the reproductive performance in Ossimi ewes. Thirty ewes, two to four years old (39 ± 1.44 kg) and five rams, three to four years old (58.6 ± 4.75 kg) were enrolled in this study. The ewes were assigned into three groups (10 ewes per group). Ewes in group A received 500gm of corn grains, group B received 500gm of soybean, while group C served as a control (maintenance ration only). The ewes received the flushing ration for two weeks before and two weeks after mating. The results from this study demonstrated that group B had higher conception, lambing, and prolificacy rates (80%, 80%, and 125%) than group A (70%, 70%, and 114.28%) and group C (70%, 70%, and 100%) respectively. The difference was not significant. Also, the birth weight of lambs was the highest in group B (1.95 ± 0.03 kg) followed by group C (1.83 ± 0.05 kg) and group A (1.76 ± 0.11 kg), but the difference was not significant. In conclusion, the obtained data revealed that flushing of Ossimi ewes with soybean as a source of protein improved conception, lambing and prolificacy rates and birth weight of their lambs but was not different than flushing ewes with corn grains. 
      PubDate: Wed, 30 Nov 2022 22:00:00 +010
       
  • Persistence and Immunogenicity of Edwardsiella Piscicida phoP/Q Mutants in
           Channel Catfish ...

    • Abstract: Edwardsiella piscicida is a Gram negative, invasive and intracellular pathogen lead to develop hemorrhagic septicemia in wide varieties of freshwater fish species worldwide. Previously, two novel E. piscicida mutant strains namely ΔphoP and ΔphoQ were constructed and the data were published. In the present study, the resistance of in-frame deleted mutant strains ΔphoP/Q were investigated for their immunogenicity at the levels of blood and serum killing activities in comparison with E. piscicida wild-type (WT) pathogenic strain C07-087. Moreover, tissue persistence and expression profile of some immune relevant genes were monitored in head kidneys, spleens and livers of the intra-peritoneal immunized channel catfish fingerlings model. Results revealed that ΔphoP and ΔphoQ showed a significant decreased resistance against host killing activities compared to E. piscicida WT strain. At all tested levels, the tissue persistence showed that the mutants held the capability to attack and spread in the immunized channel catfish investigated tissues. Meanwhile, live bacteria could be noticed in livers, spleens and anterior kidneys up to 7 days after immunization. Furthermore, significant up-regulation levels of IL-1β, INFγ, CD4-1, MHC class I and MHC class II were detected in anterior kidneys and spleens of WT, ΔphoP and ΔphoQ vaccinated fish compared to non-immunized control group at 14 and 21 days post immunization. In conclusion, our findings proved that ΔphoP and ΔphoQ mutant strains have the aptitude to motivate both innate and adaptive immune responses and also they have the prospective requirements as successful live vaccine candidates. 
      PubDate: Wed, 30 Nov 2022 22:00:00 +010
       
  • Staphylococcal Subclinical Mastitis in Dairy Cows in Blida Region
           (Algeria)

    • Abstract: Subclinical mastitis is an insidious disease of the mammary gland that negatively impacts the production of dairy cows. The objective of the present study is to screen subclinical mastitis in dairy cattle farms. A total of 208 lactating cows from five herds were examined and screened by the California mastitis test (CMT). Bacteriological analysis was performed on all CMF positive milk samples to characterize the presence of infection due to the genus Staphylococcus; as well as studying of the sensitivity of these isolated strains to antibiotics. The results showed that out of 208 cows screened by CMT, 71.15% were positive. Bacteriological analysis revealed that 111 samples found to be of the genus Staphylococcus, (75%). The characterization of the strains affirmed that the coagulase positive staphylococci represent 51.34% with a predominance of Staphylococcus aureus with a rate of 40.54% and the coagulase negative staphylococci represent 48.61%. The results of the antibiotic resistance revealed that the strains of coagulase positive Staphylococci particularly S aureus are resistant to the combination of amoxicillin and clavulanic acid, oxacillin and tetracycline with levels ranging from 4.4%, 44, 4% and 11.1% respectively. While coagulase negative Staphylococci showed resistance to the same molecules with 9.2%, 16.6% and 31.3% respectively. The obtained results demonstrated a very strong correlation between CMT and bacteriological findings. CMT seems to be an advantageous tool to expand, for systematic and regular screening against subclinical mastitis.
      PubDate: Wed, 30 Nov 2022 22:00:00 +010
       
  • Hepatoprotective Effect of Silybon 140® on Acetaminophen induced
           Liver Toxicity in Nigerian ...

    • Abstract: Acetaminophen is commonly used in veterinary practice and it is known to produce hepatotoxicity at high doses especially in companion animals. Silybon 140® (Silybum marianum) is a new drug for the treatment of several liver injuries in humans. This experiment investigated the protective effect of Silybon 140 on toxicities induced by acetaminophen in dogs. Twelve Nigerian dogs about 12 months of age were randomly separated into four groups of three dogs each. Group 1 received only distilled water throughout the experiment while groups 2 and 3 were administered Silybon 140 at dose of 100 and 200 mg/kg for three days respectively.  A day after, groups 2, 3 and 4 were administered acetaminophen at dose of 500 mg/kg once. All medications were given orally. Blood samples were collected in two samples bottles; one with EDTA and the other without EDTA for hematology and serum biochemistry studies. Blood samples were collected before drug administration and at day 7, 14 and 21 post acetaminophen administration. The results showed significant protective effect of Silybon 140 on the liver and kidney against acetaminophen toxicity. At day seven there was significant decrease in AST levels in Silybon treated groups and ALT levels at day 21 comparing to acetaminophen group. Similarly, creatinine levels of 1.7±0.1, 1.6±0.3 and 2.7±0.3 for groups 2, 3 and 4 respectively were observed. At the doses of 100 and 200 mg/kg, Silybon 140 effectively protected the liver and kidney against acetaminophen induced renal and hepatic toxicity, thus can be used for disease conditions affecting the liver and the kidney in dogs.
      PubDate: Wed, 30 Nov 2022 22:00:00 +010
       
  • Biodegradable Antimicrobial Films Incorporated with Silver Nanoparticles
           Inhibit the Growth of ...

    • Abstract: Antimicrobial food packaging was developed in response to the growing demand for longer fresh food shelf life and protection against foodborne infections. Therefore, the current study was conducted to investigate the antimicrobial effect of homemade biodegradable antimicrobial films incorporated with silver nanoparticles (Ag-NPs) against Staphylococcus aureus (S. aureus) experimentally inoculated in chicken breast. Chicken breast slices (5 × 5 cm) were experimentally inoculated with a cocktail of three S. aureus strains at a concentration of about 6.6 log10 CFU/cm2 and wrapped in homemade biodegradable antimicrobial films. Following that, the residual bacterial counts in wrapped chicken breast fillet slices were monitored for up to 10 days in a refrigerator (4 °C). It was found that at the end of the chilling period the films with biosynthesized Ag-NPs (1mM), biosynthesized Ag-NPs (2mM), chemically synthesized Ag-NPs (1mM), and chemically synthesized Ag-NPs (2mM) reduce the S. aureus counts by about 4.66, 5.24, 4.79, and 5.43 log10 CFU/cm2, respectively when compared with control films. Biodegradable antimicrobial films also prolonged the shelf-life of samples by approximately 4 days when compared to control samples.  
      PubDate: Wed, 30 Nov 2022 22:00:00 +010
       
  • Effect of Gonadotrophin Releasing Hormone (GnRH) on the Reproductive
           Performance in Ossimi Ewes

    • Abstract: This study aimed to evaluate the influence of gonadotrophin releasing hormone (GnRH) administration to Ossimi ewes before mating on their conception, lambing and prolificacy rates, and their mean lambs’ birth weights. Twenty-one (three to five years old) Ossimi ewes and five (three to four years old) rams, (58.6±4.75kg) were recruited for this study. Ewes were allocated into three groups (7 ewes each) and synchronized with two doses of prostaglandin F2 alpha (PGF2 α) 11 days apart. Ewes of the first group (35.3±5.62kg) were flushed with corn (0.5 kg/ewe/day) for two weeks before and two weeks after mating, while ewes of the second group (37.37±7.03kg) received one ml of GnRH, 24 hours after the second dose of PGF2α. Ewes of the third group (35.28±4.11kg) served as a control. Results of this study illustrated that GnRH group had higher conception (85.71%) and lambing (85.71%) rates than corn (71.43%, 71.43%) and control (42.85%, 42.85%) groups respectively. But the difference was not significant (p > 0.05). Prolificacy rate (100%) was the same for all groups (p > 0.05); there was no twin lambing in all groups. Also, the mean lambs’ birth weight was non-significantly (p > 0.05) higher in GnRH (1.88 kg) than corn (1.82 kg), and control (1.87 kg) groups respectively. In conclusion, administration of GnRH to Ossimi ewes before breeding non-significantly enhanced their conception and lambing rates, and the effect on mean lambs’ birth weights was very limited.  
      PubDate: Wed, 30 Nov 2022 22:00:00 +010
       
  • Coagulase Negative Staphylococci Causing Subclinical Mastitis in Sheep:
           Prevalence, Phenotypic ...

    • Abstract: Subclinical mastitis (SCM) is one of the most prevalent diseases affecting dairy animals and hindering the development of animal production sector worldwide. Staphylococci are the most significant causative bacterial pathogens in both clinical and subclinical cases. The present study aimed to investigate the prevalence of SCM among sheep detecting the prevalence of coagulase negative staphylococci (CNS) and studying some of their phenotypic and genotypic characters. A total of 145 individual half milk samples (HMSs) were collected aseptically from 75 apparently healthy ewes and examined. The prevalence of SCM based on California Mastitis Test (CMT) was 29.3 and 21.4% at sheep and udder HMSs levels, respectively. The prevalence of CNS in subclinically mastitic sheep was investigated in 31 (25.8%) HMSs. Identification of CNS isolates revealed that, S. epidermidis was the most prevalent (37.5%) followed by S. xylosus (25%) and each of S. simulans, S. chromogenes and S. haemolyticus (12.5%). The results of in-vitro antimicrobial susceptibility of CNS isolates against 12 antimicrobial agents showed high resistance against ampicillin, amoxicillin-clavulanic acid, cefoxitin and cefotaxime. Meanwhile, high susceptibilities were recorded against ciprofloxacin, levofloxacin, florophenicol, vancomycin, doxycycline, clindamycin, gentamicin and sulfamethoxazole-trimethoprim. The haemolytic activity and biofilm formation on CRA medium were investigated in all isolates. The haemolytic activity was detected in 75% of isolates meanwhile 62.5% of isolates were biofilm formers. The results of genotypic detection of mecA and blaZ resistance genes and icaD biofilm coding gene using PCR showed that they were detected in 80, 60 and 60% of the tested isolates, respectively. It was concluded that CNS isolates were the most prevalent causes of ovine SCM and the existence of high percentages of antimicrobials resistance as well as resistance and virulence genes represent risk factors and public health hazards and possible danger of lateral transfer of resistance genes to other microorganisms in both animals and humans.  
      PubDate: Wed, 30 Nov 2022 22:00:00 +010
       
  • Staphylococcus aureus Causing Subclinical Mastitis in Goats: Prevalence,
           Phenotypic and ...

    • Abstract: The dairy goat industry is rapidly developing worldwide as a result of increasing the awareness about the high quality and nutritional properties of caprine milk. Subclinical mastitis (SCM) is one of the most important challenges facing goat industry and leading to great economic losses. S. aureus has been regarded for long time as one of the most leading cause of mastitis either clinical or subclinical. The present study aimed to investigate the prevalence of SCM among goats and to isolate S. aureus as well as study some of their phenotypic and genotypic characters. A total of 143 individual half milk samples (HMSs) were collected aseptically from 75 apparently healthy goats and examined. S. aureus were isolated and identified phenotypically using conventional methods in addition to using Vitek2 compact system. The selected isolates were confirmed by the detection of staphylococcal 16S rRNA gene. The prevalence of SCM based on California Mastitis Test (CMT) was 41.3 and 34.3% at goats and udder HMSs levels, respectively. The prevalence of S. aureus isolation in subclinically mastitic goats was investigated in 49 HMSs as 26.5%. The results of in-vitro antimicrobial susceptibility of S. aureus isolates against 12 antimicrobial agents showed high resistance against ampicillin, amoxicillin-clavulanic, cefoxitin, cefotaxime and vancomycin. Meanwhile, high susceptibilities were recorded against ciprofloxacin, levofloxacin, florophenicol, doxycycline HCl, clindamycin, gentamicin and sulfamethoxazole-trimethoprim. The haemolytic activity and biofilm formation on CRA medium were investigated in all isolates. The haemolytic activity was detected in 76.9% of isolates meanwhile 53.8% of isolates were biofilm formers, respectively. The results of genotypic detection of mecA, blaZ and vanA resistance genes using PCR showed that they were detected in 100, 71.4 and 42.9% of the tested isolates, respectively. Meanwhile, biofilm and α-haemolysin coding genes (icaD and hla) were detected in 71.4 and 42.9% of the tested isolates, respectively. It was concluded that S. aureus is one of the most prevalent cause of caprine SCM and the existence of high percentages of antimicrobials resistance as well as resistance and virulence genes represent risk factors and public health hazards and possible danger of lateral transfer of resistance genes to other microorganisms in both animals and humans.
      PubDate: Wed, 30 Nov 2022 22:00:00 +010
       
  • Relationship between Thyroid Hormones and Blood Contents of Zinc and
           Copper of Sheep at ...

    • Abstract: This study was conducted to determine the correlation between the levels of thyroid hormones (T3 and T4) and the levels of blood contents of zinc (Zn) and copper (Cu) of 100 sheep from two different farms (50 sheep/each). Each group of them subdivided into 5 subgroups (ten animals/each). Blood samples were collected for estimating the concentrations of T3, T4, Cu and Zn. Results showed that T3 and T4 levels were significantly higher (p < 0.01) in lambs than in other sheep in both groups (A and B). Serum levels were significantly lower (p < 0.01) in males than in other females in group A and significantly higher (p < 0.01) in lambs than in other adult in group B. Serum copper levels were significantly higher (p < 0.01) in males than in group A. A strong linear positive correlation was found between blood Zn levels and T3 and T4 levels in the lambs of group A (significant at 0.01). A strong linear negative correlation was found between blood Zn levels and T3 and T4 levels in the males and non-pregnant of group A (significant at 0.01). The Cu levels in blood showed a strong linear positive correlation with T3 and T4 levels in the pregnant ewes of group A (significant at 0.01) and the males of group B (significant at 0.01). A strong linear negative correlation was observed between blood Cu levels and T3 and T4 levels in the non-pregnant ewes of both groups A and B (significant at 0.01). 
      PubDate: Tue, 08 Nov 2022 22:00:00 +010
       
  • Donor, Recipient and Embryo Contributions to Pregnancy in a Commercial
           Cattle Embryo Transfer System

    • Abstract: Two experiments were designed to investigate factors affecting the risk of pregnancy in recipient Holstein heifers after transfer of in vivo produced embryos. The first experiment determined interactions of donor (n=16, multiparous Holstein cows), recipient (n=95 heifers) and embryo associated factors contributing to pregnancy establishment in recipients. Donors were superstimulated using pFSH and embryos were collected on day 7 after insemination, graded and transferred fresh to synchronous recipients. Effects of donor superovulation response (SR, high vs. low), embryo quality grade (first, second or third) and circulating progesterone in recipients at ET (High vs. low) on pregnancy rate per embryo transfer (PR/ET) were evaluated. High SR of donors was associated with higher numbers of all embryo quality grades (P<0.05). Recipient heifers receiving 2nd and 3rd grade embryos from low SR donors achieved greater PR/ET (70%), compared to recipients receiving 2nd and 3rd grade embryos from high SR donors (17.65%). In experiment 2, recipient Holstein heifers were allocated into a control (n=48) and a flunixin meglumine (FM) treated group (n=21) in which individual heifers were administered with 10 ml FM at ET to test effects of FM on PR/ET. Recipient temperament was evaluated (calm vs excitable). Excitable recipient temperament at ET was associated with lower PR/ET. Pregnancy tended to be higher (66.67% vs 60.42%) in treated recipients. Conceivably, SR influenced establishment of pregnancy in recipients depending on the quality of transferred embryos. In addition, treatment of embryo recipients with FM at ET may improve PR/ET in excitable recipient dairy heifers.
      PubDate: Thu, 03 Nov 2022 22:00:00 +010
       
  • Dietary Boron Supplementation and its Impact on Growth, Immunity and some
           Minerals in the Blood ...

    • Abstract: Boron (B) has been linked to a variety of physiological activities, and the World Health Organization considers it essential for both animal and human health. Therefore, this study was implemented to judge the safe use of B at the current dose on the growth, immunity, and blood calcium and magnesium in male goats. Two groups of male goats were used in the current study. The animals in the control group (CNT group) were offered free access to the standard diet. The animals in the B group received the control diet plus 70mg of B/kg diet for 6 months. The findings showed that there were no significant differences (P> 0.05) between the two groups in terms of growth indicators (Heart girth, body length, fore, and hind limb lengths, and testicular circumferences). Except after the 18th week, body length was longer in the CNT group, while hind limb length increased with B at the twelfth week. Moreover, serum levels of calcium and magnesium were similar in both groups. However, on the 24th week, serum magnesium level showed a marked increment with B compared to the CNT group (P< 0.05). Furthermore, the adjusted densities of serum gamma globulin were equivalent in both groups (P= 0.814). In conclusion, adding B to the diet, at the studied dose, to male goats had no negative effects on their ability to grow, immunity, or serum calcium and magnesium levels; therefore, it may be added to the diet without risk.
      PubDate: Sun, 16 Oct 2022 22:00:00 +010
       
  • Antimicrobial and Virulence Characteristics of Escherichia coli Isolated
           from Mastitis and ...

    • Abstract: This study was focused on the prevalence of E. coli in mastitis and endometritis of sheep and goats in Beni-Suef government with a total number of 238 samples as follow; 122 of native breed lactating ewes (n=90) and does (n=32) from private farms suffered from mastitis and a total of 116 of native breed of ewes (n=83) and she-goats (n=33) from endometritis cases in which137 isolates of Escherichia coli (E. coli) categorized as 68 isolates were isolated from mastitis and 69 isolates from endometritis with a prevalence rate of 55.7 % and 59.5 %, respectively. Antibiogram for E. coli isolates recovered from ovine and caprine mastitic cases showed resistance to amoxicillin-clavulanic acid (67.65%), cephalexin (64.71 %), amoxicillin (58.82%), cefotaxime (57.42 %), ceftriaxone (54.42 %) and gentamicin (44.11%). On the contrary, the recovered E. coli isolates from endometritis of ewes and does showed resistance to amoxicillin-clavulanic acid (69.57%), cefotaxime (68.11 %), amoxicillin (66.66 %), cephalexin (65.22%), ceftriaxone (62.32 %), colistin (46.38%) and gentamicin (44.93%). Sixty E. coli isolates (27 isolates from ovine mastitis milk samples and 33 isolates from endometritis samples were inoculated onto Yeast extract-casamino acids Congo red agar (YESCA CRA) revealed that 39 of E. coli isolates showed positive biofilm formation. Multidrug resistance was detected in 70 E. coli isolates out of 137 isolates (51.09%) (31 E. coli isolates from mastitis milk samples and 39 isolates from endometritis samples). The prevalence of virulence and resistance genes of E. coli as fimH, iutA, qnrA and blaTEM was 100%, 25%, 50% and 100%, respectively. This work was designed for detection of virulence and antibiotic resistant E. coli isolates from mastitis and endometritis cases in sheep and goats.
      PubDate: Fri, 14 Oct 2022 22:00:00 +010
       
  • Effect of Different Grilling Methods on Polycyclic Aromatic Hydrocarbons
           Content in Grilled ...

    • Abstract: Grilled chicken became widespread desired dish for wide section of consumers, however, they may act as a probable source of some chemical carcinogens, such as polycyclic aromatic hydrocarbons (PAHs) and other harmful chemicals. The content of these materials may differ according to cooking methods, temperature and grilling duration. The main aim of the present study was to evaluate the influence exerted by different grilling methods that usually practiced by consumers on the content and profile of polycyclic aromatic hydrocarbons in experimentally marinated then grilled broiler chicken. Thirty samples were marinated and grilled by charcoal, gas and electric grill (Ten samples each), the samples were extracted using magnesium sulfate and sodium acetate in an organic solvent, then purified by primary secondary amine, magnesium sulfate and endcapped octadecylsilane silica gel particles and finally measured by gas chromatography-mass spectrometry(GC-MS). Benzo[a]pyrene, Sum of benzo[a]pyrene, benzo[a]anthracene, benzo[b]fluoranthene and chrysene (PAH4), the genotoxic PAHs (PAH8) and total PAHs (ƩPAHs) recorded the highest average levels (1.38, 3.09, 3.09 and 36µg/kg) respectively, in charcoal grilled chicken samples, while lowest mean values were detected in electric machine grilled chicken samples (0, 0.44, 0.55 and 26.36µg/kg), respectively. Also, benzo[a]pyrene exceeded the permissible limits in 40% of charcoal grilled chicken samples. From the obtained results of the current study, electric grilling added less content of benzo[a]pyrene, PAH4, PAH8, non-carcinogenic PAHs and total PAHs, while samples grilled using charcoal grill showed the highest contamination with these compounds in terms of the previous parameters.
      PubDate: Sun, 11 Sep 2022 22:00:00 +010
       
  • In-vitro evaluation of different commercial antimycotics and disinfectants
           against Trichophyton ...

    • Abstract: Dermatophytosis is a fungal disease that affects both animals and humans. The improper use of antimycotic agents and disinfectants led to an acquired resistance of dermatophytes to most of commonly used agents. The aim of the present study was to assess the prevalence of dermatophytosis in a beef calves farm and to evaluate the in-vitro efficacy of some of commonly used antimycotic agents and disinfectants. Of the 120 calves examined, 35.0% (42/120) showed ringworm lesions. Trichophyton verrucosum were isolated from a total of 45 skin scrapping and hair collected from infected animals (n=42) and farm workers (n=3) followed by molecular identification using PCR. Antimicrobial sensitivity profile was performed by agar-based disk diffusion method using six antifungal agents. Three disinfectants with different concentrations were tested against 45 strains of Trichophyton verrucosum isolated from animal and human samples using broth macro-dilution at different contact times (20 sec, 30min, 1h and 24h). Animal isolates were sensitive to Fluconazole (100.0%), meanwhile human strains were sensitive to Itraconazole (66.7%) (P
      PubDate: Sun, 17 Jul 2022 22:00:00 +010
       
 
JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
 


Your IP address: 44.210.85.190
 
Home (Search)
API
About JournalTOCs
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-