不同秸秆源NDF对巴什拜羊生产性能、器官发育和血清生化指标的影响

【目的】研究以玉米秸秆和小麦秸秆为中性洗涤纤维来源的日粮,对巴什拜羊采食量、日增重、屠宰率、器官发育及血液生化指标的变化,分析不同秸秆源的NDF对巴什拜羊生产性能和血液生化指标的影响。【方法】采用单因素试验设计,选取体重为(21.76±4.86) kg的羔羊20只,随机分为2个组,分别为Ⅰ组(饲喂玉米秸秆为纤维源的日粮)、Ⅱ组(饲喂小麦秸秆为纤维源的日粮),预试期为10 d,正试期为60 d。【结果】试验Ⅰ组、Ⅱ组羊平均日增重和干物质采食量、料重比、屠宰率差异不显著(P＞0.05),两组间试验羊头、蹄、肾脏、胃重无显著差异(P＞0.05),试验Ⅰ组肝脏和肺重量显著高于试验Ⅱ组(P＜0.05)。试验Ⅰ、Ⅱ组血清球蛋白、葡萄糖、乳酸脱氢酶、谷草转氨酶活性和钙磷含量均无显著差异(P＞0.05);试验Ⅰ组血清白蛋白含量、白球比、甘油三酯显著高于Ⅱ组(P＜0.05)。【结论】两种秸秆来源NDF的日粮对巴什拜羊的生长性能、屠宰性能没有显著的影响,以玉米秸秆为NDF来源的日粮对肝脏和肺部器官机体抵抗力、免疫力影响较大,以小麦秸秆为NDF来源的日粮可能更利于脂肪的消化吸收。

Effects of Different Straw Sources NDF on the Production Performance,Organ Development and Serum Biochemical Indexes of Bashibai Sheep

【Objective】 The purpose of this study is to investigate the changes of feed intake, daily gain, slaughter rate, organ development and blood biochemical indexes of Bashibai sheep with corn straw and wheat straw as neutral detergent fibers in diet to explore the effects of NDF from different straw sources on performance and blood biochemical parameters of Bashibai sheep.【Method】Twenty sheep with the body weight at (21.76±4.86) kg were selected and divided into two groups randomly, which were sorted into groupⅠ (diet with corn stalk as fiber source) and group Ⅱ ( Feeding wheat straw as a fiber source diet) respectively, pre-test period was 10 days, test period was 60 days.【Result】The results showed that there was no significant difference in the average daily gain, dry matter intake, ratio from feed VS weight, slaughter rate and stomach weight between the two groups (P>0.05). The liver and lung weights of groupⅠ were significantly higher than those of group Ⅱ (P<0.05). There was no significant difference in the contents of serum globulin, lactate dehydrogenase, aspartate aminotransferase and calcium and phosphorus between group Ⅰ and Ⅱ (P>0.05).The content of serum albumin, white ball ratio and triglyceride in groupⅠ were significantly higher than those in Group Ⅱ (P<0.05).【Conclusion】There is no significant effect on the growth performance and slaughtering performance of Bashibai sheep fed with the two kinds of straw derived NDF diets, but the diets derived from corn stalks has a great effect on the immunity of liver and lung organs. The diet with wheat straw as the source of NDF may be more conducive to the digestion and absorption of fat.