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(P<0.05或P<0.01),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(P<0.05或P<0.01)。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。
This experiment was conducted study the effects of feeding ammoniated cottonseed hull on ruminal environment indexes and serum urea nitrogen content of Tarim red deer,and hope to provide a theoretical basis for ammoniated feed rational use of Tarim red deer. A paired experimental design（ feeding ammoniated cottonseed hull before and after feeding ammoniated cottonseed hull） was used,and three Tarim red deer fitted with permanent rumen fistula were chosen as experimental animals. The experiment divided into 2 periods,and each period had a 7-day pretrial period plus a 15-day trial period. The Tarim red deer in prophase were fed a diet with 1 kg un-ammoniated cottonseed hull,and those in anaphase were fed a diet using ammoniated cottonseed hull to replace un-ammoniated cottonseed hull. The results showed as follows： after feeding ammoniated cottonseed hull,ruminal fluid p H,ammonia nitrogen concentration,microbial protein content and serum urea nitrogen content of Tarim red deer were significantly or extremely significantly increased compared with feeding ammoniated cottonseed hull before（ P〈 0.05 or P〈 0.01）,while the concentrations of ruminal fluid acetate,butyrate and total volatile fatty acids（ VFA） were significantly decreased compared with feeding ammoniated cottonseed hull before（ P〈 0.05 or P〈 0.01）. The feed cost of Tarim red deer before and after feeding ammoniated cottonseed hull were 5. 55 and 5. 04 RMB/（ head · d）, respectively, and the cost was reduced0.51 RMB/（ head·d）. Thus,Tarim red deer on ammoniated cottonseed shell has a strong ability to adapt,the application of ammoniated cottonseed shell in the diet of Tarim red deer can effectively save protein feed,improve the utilization efficiency of forage and increase economic efficiency.
出处
《动物营养学报》
CAS
CSCD
北大核心
2017年第1期347-353,共7页
CHINESE JOURNAL OF ANIMAL NUTRITION
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)
关键词
塔里木马鹿
氨化棉籽壳
瘤胃内环境
微生物蛋白
血清尿素氮
Tarim red deer
ammoniated cottonseed hull
ruminal environment
microbial protein
serum urea nitrogen
