畜牧与兽医2024，Vol.56Issue(3)：17-22,6.
水公牛和荷斯坦奶公牛养分消化、瘤胃发酵及血液生化指标的比较研究
Comparative study on nutrient digestion,rumen fermentation and blood biochemical indexes of water buffalo bulls and Holstein bulls
摘要
Abstract
This study was conducted to compare the differences in nutrient apparent digestibility,rumen fermentation parameters and blood biochemical indexes between water buffalo bulls and Holstein bulls,both of which were fed with the same diet.Six healthy water buffalo bulls and six Holstein bulls were fed with a totally mixed ration twice daily.The bulls were housed in individual pens,and had free access to feed and water.The experiment consisted of 16 days of adaptation followed by 6 days of sampling period.Feed intake,rumen fermentation parame-ters,nutrient digestibility and blood biochemical parameters of the bulls were determined.The results showed that the intake of dry matter(DM),organic matter(OM),crude protein(CP),neutral detergent fiber(NDF)and acid detergent fiber(ADF)in the diet of the Hol-stein bulls was highly significantly higher than that of the water buffalo bulls(P＜0.01),and the digestibility of CP in the diet of the water buffalo bulls was significantly higher than that of the Holstein bulls(P＜0.05).However,there were no differences in the digestibility of DM,OM,NDF,ADF and ether extract(EE)between the two groups(P＞0.05).The ruminal pH was significantly higher in the water buf-falo bull group than in the Holstein bull group(P＜0.05),but the ruminal total volatile fatty acid(VFA),acetate,butyrate,isovalerate and valerate contents were significantly lower than those in the Holstein bull group(P＜0.05),and there were no significant differences in the concentrations of ammonia nitrogen(NH3-N),propionate and isobutyrate in rumen fluid between the two groups(P＞0.05).The contents of alanine aminotransferase,aspartate aminotransferase,albumin,alkaline phosphatase,urea,triglyceride and albumin/globulin ratio in the blood of the water buffalo bull group were significantly higher than those of the Holstein bull group(P＜0.05),but the contents of total pro-tein,globulin and total cholesterol in the blood of the water bull group were significantly lower than those of the Holstein bull group(P＜0.05),and there were no differences in the blood γ-glutamyl transferase and blood glucose contents between the two groups(P＞0.05).The results of the present experiment indicated that,under the feeding conditions of this test diet,the Holstein bulls showed a better potential for weight gain in terms of dietary nutrient intake and the production of volatile fatty acids,such as rumen acetic acid and butyric acid,than the water buffalo bulls did.关键词
水公牛/荷斯坦奶公牛/养分消化/瘤胃发酵参数/血液生化指标Key words
water buffalo bulls/Holstein bulls/nutrient digestion/rumen fermentation parameters/blood biochemical indexes分类
农业科技引用本文复制引用
王宇,郑欣怡,古青弘,郑文金,林波,申军士..水公牛和荷斯坦奶公牛养分消化、瘤胃发酵及血液生化指标的比较研究[J].畜牧与兽医,2024,56(3):17-22,6.基金项目
中央高校基本科研业务费专项资金(KYGD202101) （KYGD202101）
