饲喂氨化棉籽壳对塔里木马鹿瘤胃内环境指标及血清尿素氮含量的影响
发布时间：2019-01-07 20:25
【摘要】：本试验旨在研究饲喂氨化棉籽壳对塔里木马鹿瘤胃内环境指标及血清尿素氮含量的影响,以期为塔里木马鹿对氨化饲料的合理利用提供理论依据。选用3只安装有永久性瘤胃瘘管的塔里木马鹿作为试验动物,采用配对试验设计(饲喂氨化棉籽壳前和饲喂氨化棉籽壳后),分2期进行,前期饲喂含未氨化棉籽壳(1 kg)的饲粮,后期饲喂用氨化棉籽壳全部替换掉未氨化棉籽壳的饲粮。每期试验分为预试期和正试期,预试期7 d,正试期15 d。结果显示:饲喂氨化棉籽壳后,塔里木马鹿瘤胃液p H、氨态氮浓度、微生物蛋白含量和血清尿素氮含量均显著或极显著高于饲喂氨化棉籽壳前(P0.05或P0.01),乙酸、丁酸和总挥发性脂肪酸浓度显著或极显著低于饲喂氨化棉籽壳前(P0.05或P0.01)。饲喂氨化棉籽壳前、后每只塔里木马鹿每天的饲料成本分别为5.55和5.04元,饲喂后比饲喂前低0.51元。由此可见,塔里木马鹿对氨化棉籽壳有很强的适应能力,氨化棉籽壳在塔里木马鹿饲粮中的应用可有效节约蛋白质饲料,提高粗饲料的利用效率,提高经济效益。
[Abstract]:The purpose of this experiment was to study the effect of ammoniated cottonseed shell on the rumen environmental index and serum urea nitrogen content of Tarim Wapiti in order to provide theoretical basis for the rational utilization of ammoniated feed in Tarim Wapiti. Three Tarim Wapiti with permanent rumen fistula were selected as experimental animals. The paired design (before and after feeding ammoniated cottonseed shell) was used in two phases. The diets containing unammoniated cottonseed shells (1 kg) were fed in the early stage, and those without ammoniated cottonseed shells were replaced with ammoniated cottonseed shells in the later stage. Each trial period was divided into pre-test period and positive trial period, the pre-trial period was 7 days, and the positive trial period was 15 days. The results showed that the concentrations of pH, ammonia nitrogen, microbial protein and serum urea nitrogen in rumen fluid of Tarim Wapiti were significantly or extremely higher than those before ammoniated cottonseed shell (P0.05 or P0.01). The concentrations of butyric acid and total volatile fatty acids were significantly lower than those before feeding ammoniated cottonseed shell (P0.05 or P0.01). The feed cost of each Tarim Wapiti before and after ammoniated cottonseed shell was 5.55 and 5.04 yuan, which was 0.51 yuan lower than that before feeding. It can be seen that Tarim Wapiti has a strong adaptability to ammoniated cottonseed shell. The application of ammoniated cottonseed shell in the diet of Tarim Wapiti can effectively save protein feed, improve the utilization efficiency of crude feed and increase economic benefit.
【作者单位】： 塔里木大学动物科学学院;新疆建设兵团塔里木畜牧科技重点实验室;
【基金】：国家自然科学基金(31260569,31460610) 中国农业大学-塔里木大学科研联合基金(ZNTDLH1502)
【分类号】：S825.5
本文编号：2404119
[Abstract]:The purpose of this experiment was to study the effect of ammoniated cottonseed shell on the rumen environmental index and serum urea nitrogen content of Tarim Wapiti in order to provide theoretical basis for the rational utilization of ammoniated feed in Tarim Wapiti. Three Tarim Wapiti with permanent rumen fistula were selected as experimental animals. The paired design (before and after feeding ammoniated cottonseed shell) was used in two phases. The diets containing unammoniated cottonseed shells (1 kg) were fed in the early stage, and those without ammoniated cottonseed shells were replaced with ammoniated cottonseed shells in the later stage. Each trial period was divided into pre-test period and positive trial period, the pre-trial period was 7 days, and the positive trial period was 15 days. The results showed that the concentrations of pH, ammonia nitrogen, microbial protein and serum urea nitrogen in rumen fluid of Tarim Wapiti were significantly or extremely higher than those before ammoniated cottonseed shell (P0.05 or P0.01). The concentrations of butyric acid and total volatile fatty acids were significantly lower than those before feeding ammoniated cottonseed shell (P0.05 or P0.01). The feed cost of each Tarim Wapiti before and after ammoniated cottonseed shell was 5.55 and 5.04 yuan, which was 0.51 yuan lower than that before feeding. It can be seen that Tarim Wapiti has a strong adaptability to ammoniated cottonseed shell. The application of ammoniated cottonseed shell in the diet of Tarim Wapiti can effectively save protein feed, improve the utilization efficiency of crude feed and increase economic benefit.
【作者单位】： 塔里木大学动物科学学院;新疆建设兵团塔里木畜牧科技重点实验室;
【基金】：国家自然科学基金(31260569,31460610) 中国农业大学-塔里木大学科研联合基金(ZNTDLH1502)
【分类号】：S825.5
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