Bangladesh Journal of Animal Science最新文献

{"title":"Performance of hilly and naked neck hilly chicken at Naikhongchari of Bangladesh","authors":"M. Alam, R. Khatun, M. Hasan, M. Rakib, M. Hossain","doi":"10.3329/bjas.v51i3.61789","DOIUrl":"https://doi.org/10.3329/bjas.v51i3.61789","url":null,"abstract":"A study was conducted to evaluate the production and hatching performances of hilly chickens and naked neck (NN) hilly chickens at the hilly areas of Naikhongchari regional station research farm of Bangladesh Livestock Research Institute (BLRI). The experimental chickens were reared in an open-sided poultry house under an intensive management system for a period of 18 month. The birds were allowed to take feed and clean drinking water ad libitum. Data on productive and reproductive performances of hilly and NN hilly chickens were recorded regularly. Result revealed that no significant (P>0.05) difference on body weight of day old, 2nd weeks and 4th weeks of age but significantly (P<0.05) differ on 6th to 12th weeks of age on hilly and NN hilly chicken. Result also showed that average feed intake and mortality percentage at day old to 12th weeks of age were significantly (P<0.05) differ among hilly and NN hilly chicken. It was found that no significant (P>0.05) difference of egg weight and chick weight between hilly and NN hilly chicken but significantly (P<0.05) differed in hatchability percentage. On the other hand, result exhibited that average body weight (ABW) of cock and hen, feed intake and mortality were significantly (P<0.05) differed among hilly and NN hilly chicken. Hen days egg production was significantly (P<0.05) differed between hilly and NN hilly chicken but no significant (P>0.05) difference of average total egg weight and age at first egg. These findings imply that Hilly chicken performance was better than NN hilly chicken in terms of body weight (BW), age at first egg (AFE) and egg production. Both hilly (feathered) and NN hilly chickens need to be conserved and improved further through selective breeding and a better management system. \u0000Bangladesh Journal of Animal Science 51 (3): 133-137, 2022","PeriodicalId":8873,"journal":{"name":"Bangladesh Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86410594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fenugreek (Trigonella foenum-graecum) extract improves hyperglycemia and hyperlipidemia in high sugar diet fed mice","authors":"R. Chacrabati, T. Afrin, M. Hasan, C. Goswami","doi":"10.3329/bjas.v51i3.61784","DOIUrl":"https://doi.org/10.3329/bjas.v51i3.61784","url":null,"abstract":"Diabetes, obesity and other cardiovascular diseases are major public health problems that are increasing at an alarming rate. Diabetics and obesity are characterized by high blood glucose level caused by high sugar consumption. New treatment techniques are needed that can lower blood glucose levels without causing any negative effects. Fenugreek known as Methi in Bangla, has been well known to have medicinal properties, such as antidiabetic, anti-hyperlipidaemic, anti-inflammatory, anticancer, antioxidant, and neuroprotective activities. Thus, the supplementation of fenugreek could be an alternative diet that could mitigate the deleterious effect of high sugar consumption and prevent the development of metabolic diseases. Therefore, this experiment was designed to investigate the effect of Fenugreek extract (FE) supplementation on anti-hyperglycemic and anti-hyperlipidemic activities in high sugar diet (HSD) fed mice. Four diet paradigms were selected for this experiment- viz., normal diet (ND), normal diet with Fenugreek extract (ND+FE), 30% sucrose (HSD), and 30% sucrose with Fenugreek extract (HSD+FE). The supplementation of FE (300mg/kg BW) significantly (*p<0.05) hampers the increase in food intake due to high sugar diet consumption in mice. Additionally, mice fed with FE enriched diet significantly lowered body weight as compared with the HSD group. Also, FE supplementation significantly attenuated the increased blood glucose concentration caused by high sugar intake. The inclusion of FE had no effect on heart weight, kidney weight, white adipose tissue and brown adipose tissue but significantly decreased the increased weight of the liver in the HSD-fed group. In addition, FE supplementation also attenuated the HSD-induced elevation of serum total cholesterol (TC), triglycerides (TAG), and low-density lipoprotein C (LDL-C). Considering the above findings, FE could effectively tolerate a normoglycemic state and inhibit the development of diabetics and obesity caused by HSD. Therefore, FE could be beneficial for the management of metabolic disorders due to consumption of high sugar. \u0000Bangladesh Journal of Animal Science 51 (3): 90-97, 2022","PeriodicalId":8873,"journal":{"name":"Bangladesh Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89666509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synbiotic, probiotic and neem leaf as alternatives to antibiotic growth promoter in broiler diet","authors":"M. Ahammed, MN Rahman","doi":"10.3329/bjas.v51i3.61788","DOIUrl":"https://doi.org/10.3329/bjas.v51i3.61788","url":null,"abstract":"The feeding trial was carried out to compare the effect of probiotic, synbiotic and neem (Azadirachta indica) leaf as alternatives to antibiotic in broiler chicken diets. The experiment was performed for a period of 28 days with a number of 500 day-old straight run broiler chicks. Birds were divided into five dietary treatment groups with 4 replications having 25 birds in each. The dietary groups were; control (Basal diet), synbiotic, probiotic, neem leaf powder (NLP) and antibiotic group. The experimental diets were consisted as broiler starter (day-old to 14 days) and broiler grower (15 to 28 days). The supplementation of synbiotic, probiotic, NLP and antibiotic in the broiler diets had significant effect on growth performance. Diets supplemented with synbiotic showed significantly (p<0.05) higher live weight and weight gain at the end of the experiment compare to the control and antibiotic group. NLP and probiotic supplemented groups also showed significantly higher (p<0.05) body weight and body weight gain compared to control and showed almost similar performance compared to antibiotic group. Better FCR (p<0.05) was also noticed in synbiotic group (1.60) compare to the control (1.79), antibiotic group (1.65), NLP group (1.69) and probiotic group (1.70). There were no significant differences in meat quality characteristics among the dietary groups. The cost of production per kg of live broiler was slightly lower in synbiotic group compared to control and antibiotic groups. With regards to profit, synbiotic groups showed higher profitability than other groups. The result indicated that supplementation of synbiotic, probiotic and NLP in broiler diet had a positive effect on growth performance and profitability. It is therefore suggest that the synbiotic, probiotic and NLP could be potential feed additives in broiler diet and synbiotic could be considered as a better antibiotic alternative for broiler production. \u0000Bangladesh Journal of Animal Science 51 (3): 122-132, 2022","PeriodicalId":8873,"journal":{"name":"Bangladesh Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85907176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficacy of bacterial phytase, citric acid and their combination in broiler fed inorganic phosphorus free diet","authors":"S. Munmun, MA Rahman, K. Islam, R. Chowdhury","doi":"10.3329/bjas.v51i3.61786","DOIUrl":"https://doi.org/10.3329/bjas.v51i3.61786","url":null,"abstract":"Present study was conducted to assess the efficacy of Escherichia Coli derived phytase alone or with citric acid (CA) given inorganic phosphorus (P) free broiler diet.  Ninety six one-day old COBB-500 male broilers were divided into four groups and fed one of the following diets for a period of 35 days: positive control (PC) diet formulated based on the NRC (1994) recommendations, negative control (NC) diet (inorganic P free diet; containing 0.20% lower P than that in the PC diet), and two other diets were formulated by adding only phytase (500 FTU/kg of feed) or phytase with CA (500 FTU/kg of feed with 2 % CA) in the NC diet. Growth performance, serum minerals concentration, tibia and shank characteristics, and nutrient retention were measured. Impaired growth performance (final BW, BW gain, and FCR) in broilers (NC group) fed inorganic P free diet was restored with the addition of phytase in NC diet. Best FCR (1.83) was recorded in phytase added group and worst in NC group (2.03), however, further addition of CA with phytase did not show any significant variation. Lowest concentration of serum P (mg/dl), tibia P (%) and shank P (%) were ameliorated (P<0.05) by the addition of phytase, and the restoration magnitude was non-significantly greater in phytase with CA group. Retention of total P (%) in broilers given phytase added diet was comparable with broilers given PC diet, although the former diet contained lower level of available P in diet than the later one. Addition of CA further increased this retention (%) numerically. Broilers fed inorganic P free diet deficient in available P, with Escherichia Coli derived phytase showed the growth performance (P<0.05) and relative retention of P comparable with broilers fed NRC (1994) recommended one. Therefore, relying on Escherichia Coli derived phytase alone in available P deficient diet may be viable to ensure sufficient supply of P in broilers diets. \u0000Bangladesh Journal of Animal Science 51 (3): 107-114, 2022","PeriodicalId":8873,"journal":{"name":"Bangladesh Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79322464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of dried orange peel on egg production and quality of laying hen","authors":"ST Ahmed, M. Hasan, S. Resmi, MW Islam, Muhammad Fazalul Rahman","doi":"10.3329/bjas.v51i3.61785","DOIUrl":"https://doi.org/10.3329/bjas.v51i3.61785","url":null,"abstract":"Utilization of agricultural by-products in animal nutrition is a practice as old as the domestication of animals. The dried orange peel (DOP), by-product of citrus industry is a promising source of diversified bioactive ingredients with beneficial effects on health. Therefore, this study was carried out to assess the dietary effect of DOP on production and, internal and external egg quality characteristics of laying hens. A total of 60 layers of 25 weeks of age were segregated into three dietary treatment groups using a completely randomized design and reared up to 42 weeks. The dietary treatments were control (basal diet), 5% DOP (basal diet + 5% DOP), and 10% DOP (basal diet + 10% DOP). The study revealed that dietary DOP significantly decreased the feed consumption and feed conversion ratio of layers (p < 0.05) without having any significant effects on egg production, egg weight and egg mass. None of the exterior egg quality parameters were significantly affected by the dietary supplementation of DOP (p > 0.05). Among interior egg quality attributes, the albumen height, albumen index, yolk color, and Haugh unit were all considerably elevated through supplementation of 10% DOP (p < 0.05). Nevertheless, the yolk index was raised by both 5% and 10% DOP supplementation (p < 0.05).  The relative weight of ovarian grape and oviduct did not affect by the supplementation of DOP with layer diet (p > 0.05). In summary, it may be said that layer diets can be supplemented with DOP up to 10% level to improve FCR, albumen index, yolk index, yolk color and Haugh unit without compromising egg production or exterior egg quality. Further studies are recommended with layer diets supplemented with DOP at levels higher than 10% to determine the ideal DOP dose during other production periods in various layer strains. \u0000Bangladesh Journal of Animal Science 51 (3): 98-106, 2022","PeriodicalId":8873,"journal":{"name":"Bangladesh Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79722391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Meat processing and handling facilities in slaughterhouses of selected areas of Bangladesh","authors":"M. Alam, M. Hasan, M. Hossain, S. Ahemd, S. Hoque, M. Hossain, S. Rahman","doi":"10.3329/bjas.v51i3.61787","DOIUrl":"https://doi.org/10.3329/bjas.v51i3.61787","url":null,"abstract":"The study was conducted to investigate the present status of meat processing facilities in different slaughterhouse of Bangladesh through field survey. The data was collected through interview schedule selecting 30 respondents (Butcher, Seller and Consumer) in Khulna, Rajshahi and Rangpur Division in Bangladesh. They were asked about knowledge of hygienic meat production, slaughterhouse environment, existing facilities, sanitation and waste management, opinion of the butcher, seller and consumers. It was obtained from the study indicating that approximately 75.63% of the animals were slaughtered at the abattoir. Only 5.8% of butchers (n=30) knew about the production of hygienic meat. Almost 100% of the abattoirs lacked hygiene and sanitation. Only 26.66% slaughtered carcasses were checked by veterinary surgeon where another 16.7% were checked by unskilled meat inspectors from the municipality. Only 23.33% of slaughterhouses were situated in environmentally friendly locations. Consumer perception revealed that only 3.33% of consumers have knowledge of meat hygiene. Meat is a great source of animal protein in our country but hygienic condition and facilities available in slaughterhouse were not satisfactory. Slaughterhouses both in rural or municipal areas were contaminated frequently and therefore meat and meat byproducts coming from such conditions often deteriorated through bacterial infection or contamination might be the cause of food poisoning or diseases in consumers. \u0000Bangladesh Journal of Animal Science 51 (3): 115-121, 2022","PeriodicalId":8873,"journal":{"name":"Bangladesh Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73286176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Herbage mass of Teosinte (Euchlaena mexicana) grown as mono and mixed with legumes","authors":"B. Khanal, N. Devkota, Munmun Tiwari, N. Gorkhali","doi":"10.3329/bjas.v51i2.60494","DOIUrl":"https://doi.org/10.3329/bjas.v51i2.60494","url":null,"abstract":"The popular summer cereal fodder is Teosinte (Euchlaena mexicana) which has low productivity and chemical constituents. The quality and quantity of teosinte fodder can be enhanced by adjusting cultivation practices including use of appropriate sowing dates and by following an appropriate mixed cropping cultivation with legumes. This study was conducted to identify the fodder quantity and quality under a commonly practiced mixed cultivation of legumes with teosinte with varied sowing dates. Three combination of fodder; teosinte, teosinte+cowpea and tesosinte+rice bean was arranged in four sowing dates in Split Plot Design, replicated five times. Sowing dates were arranged as main plot while combination of fodder species was arranged as sub plot. Growth parameters of teosinte (tiller numbers/m2, plant height), green herbage mass, dry herbage mass, crude protein (CP), acid detergent fiber (ADF) and neutral detergent fiber (NDF) were determined. The results showed significantly highest (p<0.05) cumulative green and dry herbage mass was obtained from teosinte+cowpea, if sown in 18th  April followed by 28th April for the same combination of treatments. Significantly the highest (p<0.001) average value of CP was obtained from teosinte+cowpea whereas the highest (p<0.001) average value of NDF and ADF were obtained from teosinte mono crop. The effect of date of sowing and treatments interaction/combination on average value of CP, NDF and ADF were statistically similar (p>0.05). The result of this experiment indicated that teosinte sown with cowpea in 18th  April might be the best combination to produce high herbage mass as well as better quality of fodder.\u0000Bangladesh Journal of Animal Science. 2022. 51 (2): 47-54","PeriodicalId":8873,"journal":{"name":"Bangladesh Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78211885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Changes in morphology, nutrient content and production costs of hydroponic wheat as fodder","authors":"M. Bari, M. Islam, MM Islam, M. Habib, M. Sarker, M. Sharmin, M. Rashid, Ma Islam","doi":"10.3329/bjas.v51i2.60498","DOIUrl":"https://doi.org/10.3329/bjas.v51i2.60498","url":null,"abstract":"This study was conducted to investigate the changes in morphology, biomass yield, chemical composition and production cost of Hydroponic Wheat Fodder (HWF) with the advancement of growing days. The HWF was cultivated at low cost sprouting house at the Bangladesh Agricultural University (BAU) Dairy Farm, Mymensingh, Bangladesh. Firstly, wheat grains were collected, washed and then soaked in tap water for 12 h. Thereafter, grains were wrapped with a gunny bag for 24 h for germination. Then, grains were spread out in trays and irrigated using tap water up to 8th day morning. Biomass yield, morphological, nutritional parameters and cost of production were determined daily from each of the eight batches (day, 0 to 8) in the sprouting house.  An increasing trend was seen in biomass yield, plant height, root length and root number of HWF with the days of advancement and found highest on 8th day (p=0.000). Biomass yield was increased 6 times during this 8 days cycle. On the contrary, a decreasing trend was observed in cost of production (0-5th day) and found lowest (BDT. 5.00) value in day 6th -8th (p < 0.001). A strong positive (r=0.891-0.989) correlation exists between biomass yield and morphological features (p < 0.001). Whereas, cost of production negatively (r=-0.857--0.946) correlated with biomass yield and morphological parameters (p < 0.001). The dry matter content of HWF reduced (p <0.001) gradually from day 0 to 8. The crude protein, ether extracts and minerals (calcium, phosphorus and magnesium) content of HWF increased positively from day 0 to 8 but nitrogen-free-extracts and organic matter declined (p < 0.001) gradually. However, morphology, biomass yield, chemical composition and production cost of fodder were similar between the days of 7 to 8. Finally, farmers might grow HWF up to 7-8 days as a new source of livestock feed. \u0000Bangladesh Journal of Animal Science, 51 (2): 68-80.","PeriodicalId":8873,"journal":{"name":"Bangladesh Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84531940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sensorial, chemical and microbial quality of spongy rosogolla","authors":"Md. Arafat Hossain, Mmh Khandakar, M. Islam, M. Islam","doi":"10.3329/bjas.v51i2.60499","DOIUrl":"https://doi.org/10.3329/bjas.v51i2.60499","url":null,"abstract":"The goal of this investigation was to compare the physical, chemical and microbial qualities of laboratory made and market spongy rosogolla. Two types of spongy rosogolla were made in laboratory from the cow and buffalo milk chhana to reveal the quality in regards of the species and three types of market spongy rosogolla were collected from three different shops. With regard to the physical attributes, laboratory made spongy rosogolla were found better than the market spongy rosogolla and cow milk spongy rosogolla was the best. In chemical aspects, laboratory made spongy rosogolla had greater pH, fat, protein, and ash content, whereas, market spongy rosogolla showed higher acidity and carbohydrate content. The moisture content of cow milk spongy rosogolla was highest. The mineral contents (Ca, P, and Mg) were also differed significantly (p<0.01) among the samples except for Na content. Highest Ca, P and Mg contents were found in market spongy rosogolla. The total viable count (TVC) was significantly (p<0.01) lower in laboratory made spongy rosogolla. However, the Escherichia coli count was found similar (p>0.05) in both cow and buffalo milk spongy rosogolla but lower (p>0.05) than other market spongy rosogolla samples. Considering all the findings, it may be concluded that the quality of market spongy rosogolla needs improvement and responsible authorities might take necessary initiatives for monitoring. \u0000Bangladesh Journal of Animal Science, 51 (2): 81-84.","PeriodicalId":8873,"journal":{"name":"Bangladesh Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85415465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Napier silage on milk production of Holstein Friesian Crossbred Cow","authors":"M. Habib, M. Akbar, ZH Khandaker","doi":"10.3329/bjas.v51i2.60497","DOIUrl":"https://doi.org/10.3329/bjas.v51i2.60497","url":null,"abstract":"This work aspired to evaluate the quality of different types of silage on milk production made from whole napier grass, napier stem, and napier leaf. Napier grass (Pennisetum Purpureum) was harvested at 70 days of age and made into three types of silage in three different silo pits under proper anaerobic conditions for 45 days. A feeding program of 60 days duration was designed on nine (9) lactating (110-140 days after calving) Holstein Friesian crossbred dairy cows of 2nd parity (age 6-7 years, live weight 500±5 kg). The cows were divided into 3 groups and assigned to 3 dietary treatments, basal ingredients with whole napier grass silage (T1), basal ingredients with chopped napier leaf silage (T2), and basal ingredients with napier stem silage (T3). After ensiling, it was found that napier stem silage possesses the highest pH value indicating low-quality silage whereas napier leaf silage possesses the lowest pH value. The pH value of whole napier grass silage was slightly higher than that of napier leaf silage. Concentrations of CP and NH3-N were highest in napier leaf silage and lowest in napier stem silage. The CP value was almost similar in whole napier grass silage and napier leaf silage but the NH3-N value of whole napier grass silage was lower than that of napier leaf silage. Among the three groups, the cows of napier leaf silage group gave significantly (P<0.05) higher milk yield than the cows of whole napier grass and napier stem silage group. On the other hand, the cows of napier stem silage group gave significantly (P<0.05) lower milk yield than the cows of whole napier grass and napier leaf silage group. It can be concluded that napier leaf and whole napier grass silage are comparatively better than napier stem silage in respect to milk production of dairy cows. \u0000Bangladesh Journal of Animal Science, 51 (2): 62-67.","PeriodicalId":8873,"journal":{"name":"Bangladesh Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75079364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}