|
Bangladesh Journal of Animal ScienceNumber of Followers: 4
 Open Access journal ISSN (Print) 0003-3588 - ISSN (Online) 0003-3588
This journal is no longer being updated because:
the publisher no longer provides RSS feeds
|
- Effects of age on quality of slaughterhouse by-products in Black Bengal
goat
Authors: MM Hassan, MA Hashem, M Khan
Pages: 61 - 68
Abstract: This study was conducted with a view to investigate the yield percentage as well as nutritional composition of slaughterhouse by-products from Black Bengal goats of Bangladesh depending on different age groups. The experiment was conducted in different markets and slaughterhouses of Mymensingh district. Data and samples were collected from 50 (fifty) goats of different ages. Treatment group were executed according to the age, namely T0= 0 permanent incisor teeth (under 1 year), T1= 2 permanent incisor teeth (1 to 1.5 year), T2= 4 permanent incisor teeth (2 years), T3= 6 permanent incisor teeth (2 to 2.5 years), T4= 8 permanent incisor teeth (more than 2.5 years). Live weight, warm carcass weight, dressing percentage, percentage and nutritional composition of different slaughterhouse by-products were measured to identify the variation among the age group. The results showed a wide variation of yield percentage and nutritional composition of edible by-products for different ages of Black Bengal goats. A significant variation (P>0.01) of dressing percentage was found with the increase of age. Dressing percentage was 45.87 ± 3.23 in T0 group and 55.94 ± 2.08 in T4 group. Live weight and warm carcass weight were also increased significantly with the increase of age. No significant variation was found in the weight and percentage of different inedible by-products like skin, eye, teeth and hoof as well as edible by-products like liver, brain, kidney, lungs, heart, tongue, intestine with the increase of age. Higher percentage of dry matter and ether extract was found in the liver and heart. Crude protein was almost similar for liver, heart, kidney, lung but pH level was high at kidney. Findings of this investigation of basic properties of edible and inedible by-products of Black Bengal goat will be helpful in livestock researches. Bangladesh Journal of Animal Science 52 (3): 61-68.
PubDate: 2023-09-30
DOI: 10.3329/bjas.v52i3.69206
Issue No: Vol. 52, No. 3 (2023)
- Production performance, breeding practices and challenges of
Holstein-Local crossbred cattle in some selected areas of Bangladesh
Authors: A Azad, MA Mou, MFA Hridoy, S Azam, MA Safa, AKFH Bhuiyan, MSA Bhuiyan
Pages: 69 - 77
Abstract: The aim of this study was to investigate productive and reproductive performances, current cattle breeding practices and its associated problems in different Holstein-Local (HF×L) crossbred genotypes under existing management condition of Bangladesh. Data on HF×L crossbred dairy cows were collected from the selected farmers of Natore, Sirajganj, Kishoreganj, Tangail and Gazipur districts while breeding bulls’ information were collected from different cattle breeding service providers. Genotype had significant effects on weight at first heat (WFH), mature body weight (MBW), age at first heat (AFH), age at first calving (AFC), post-partum heat period (PPHP), daily milk yield (DMY) and peak milk yield (PMY) (P<0.05) except the traits birth weight (BW) and service per conception (SPC). The HF75%×L25% crossbreds had significantly better AFH and AFC (P<0.001) than the three genetic groups having 50%, 62.5% and >75% HF inheritance. The highest DMY was found in >HF75%×L<25% (12.80±0.72 liters) and was lowest in HF50%×L50% (5.34±0.65 liters) crossbreds. At present 11 different graded breeding bulls have been used in artificial insemination (AI) program of Bangladesh. Use of heterogeneous breeding bulls (72.9%), AI technicians depended bull’s genotype selection (63%), absence of breeding data recording (89%) system and local market-based cow purchasing (83%) with unknown pedigree information were the major challenges identified for crossbred cattle development. Among the investigated samples, 27% cows suffered from various reproductive disorders like dystocia, low conception rate, abortion and retention of placenta. In conclusion, this study provides baseline information on actual production and reproduction potentials of different graded HF×L cows at farmers’ level and the associated limiting factors for crossbred cattle development in Bangladesh. Bangladesh Journal of Animal Science 52 (3): 69-77.
PubDate: 2023-09-30
DOI: 10.3329/bjas.v52i3.69207
Issue No: Vol. 52, No. 3 (2023)
- Performances of cattle and goats in some selected areas of Gaibandha
district in Bangladesh
Authors: MA Bashar, SP Mukta, MT Hasan, SF Bhuyan, MH Alam, MM Akhtar, MAMY Khandoker
Pages: 78 - 84
Abstract: The survey was conducted to represent the livestock production scenario and to know the performances of cattle and goats in few selected rural areas of Gaibandha district. The data on productive and reproductive performances of cattle and goats were collected from 102 household within four selected village under Gobindaganj Upazila of Gaibandha district with a pretested survey questionnaire. The collected data were compiled, tabulated and analyzed by student t test. In the study area, about 59% were indigenous cattle and 41% were crossbred cattle. A total of 113 goats were found in the study area of which 82% belongs to Black Bengal goat and the remaining 18% belongs Jamunapari goat. All the livestock (100%) were managed intensively during the spring and rainy seasons. Similarly, almost all livestock (100%) are confined in shed at night, and 45.9% and 54.09% of the livestock population are confined in shed and paddock at day time, respectively. Artificial insemination (AI) is the preferred breeding method for cattle, whereas goats primarily rely on natural mating. Milk yield and lactation period of cow, and mature body weight of both male and female were significantly (P<0.05) higher in crossbred than indigenous cattle. Similarly, age at first kidding, lactation period and kidding interval of does, and mature body weight of buck and does were significantly higher in Jamunapari goats than Black Bengal goats. However, the conception rate and number of kids per kidding were higher in Black Bengal goats than Jamunapari goats. In conclusion, from our results, crossbred cattle and Jamunapari goats are performing better in rural conditions, whereas Black Bengal goats are efficient in producing more offspring at a given time. Bangladesh Journal of Animal Science 52 (3): 78-84.
PubDate: 2023-09-30
DOI: 10.3329/bjas.v52i3.69208
Issue No: Vol. 52, No. 3 (2023)
- Reproductive performance of Jamunapari crossbred using frozen semen
Authors: MM Rahman, ME Ali , MA Latif , M Fakruzzaman
Pages: 85 - 87
Abstract: Artificial insemination (AI) is modern techniques to introduce better and new genetic at the small holder farmer level by using frozen for livestock development. The aimed of the present study to popularization of goat’s artificial insemination to increase goat production with improved genetic merit by assessing the productive and reproductive traits using Jamunapari frozen semen. The study has been conducted in ten upazila namely Paba, Bagha, Nachal, Chapai sador under Rajshahi region and Birampur, Parbotipur, Fulbari, Kaliganj, Ulipur, Kawnia upazilas under the Rangpur regions. Artificial insemination has been performed in 260 numbers of does. The semen samples initially qualified for freezing was frozen as per the protocol standardized in BRAC bull station, stored in liquid nitrogen (LN2) having the post thaw motility of 50% and were later used for AI. The service per conception was 1.10 in the present study. Moreover, we found that overall conception rate was 67.1%. The average birth weight of male and female kids was 0.98 and 0.95 kg, respectively. In the present study kidding produced single, twins and triplets in 37.7, 50.65 and 11.69% of cases, respectively. The average post-partum heat period was 76.5 days. The results indicated frozen semen AI could successfully be used for preservation, conservation and propagation in Jamunapari goats. Bangladesh Journal of Animal Science 52 (3): 85-87.
PubDate: 2023-09-30
DOI: 10.3329/bjas.v52i3.69209
Issue No: Vol. 52, No. 3 (2023)
- Evaluation of degradability of Moringa, Pineapple waste and Plantain herbs
by in situ and in vitro gas production technique
Authors: MA Alam, ZH Khandaker, MAI Talukder, M Hasan Al Sharif, M Al Mamun
Pages: 88 - 98
Abstract: Nutritional evaluation of feed ingredients is important for potential use in feed rations. It is very important to determine not only the nutrient content and quality of feeds but also their digestibility prior to adding in the ration. This study was undertaken to assess the potential nutritive value of selected shade-dried herbs of moringa, pineapple waste, and plantain through in situ degradation and in vitro gas production techniques. The study compared 4 treatments, namely moringa (MH), pineapple waste (PwH), plantain (PH) herbs, and a combination of three of them with a ratio of 1:1:1 (MxH). The rumen dry matter (DM) and crude protein (CP) degradability kinetics were analyzed by using the nylon bags (in situ) procedure and the organic matter digestibility and fermentation characteristics were analyzed by in vitro gas production technique. The results of the in situ study revealed that the ruminal dry matter disappearance differed significantly (P<0.001) among herbs at all incubation periods whereas the PH had the greatest disappearance and PwH had the lowest among all herbs. Significantly (P<0.05) the highest potential and effective degradability of dry matter were found in PH and the lowest in PwH among herbs. The ruminal CP disappearance differed significantly (p<0.05) among herbs at all incubation periods. The MH had the greatest CP disappearance whereas PwH had the lowest. Significantly (P<0.05) the highest potential and effective degradability of CP were found in MH and MxH, respectively, and the lowest in PwH among herbs. The results of the in vitro study revealed that cumulative gas production was increased with increasing the periods of incubation for all herbs. Significantly (P<0.05) the highest gas production was found in PH and MH among all herbs at 48h of incubation. The organic matter digestibility and metabolizable energy were found significantly (P<0.05) higher in MH & PH and lower in PwH. Short-chain fatty acids were also significantly (P<0.05) higher in MH & PH and lower in PwH among herbs. It may be concluded that both plantain and moringa herbs showed better potential and effective degradability and also higher organic matter digestibility and metabolizable energy comparable to pineapple waste herbs. Bangladesh Journal of Animal Science 52 (3): 88-98.
PubDate: 2023-09-30
DOI: 10.3329/bjas.v52i3.69210
Issue No: Vol. 52, No. 3 (2023)
|
