摘要
选择体重差异不显著并安装有瘤胃瘘管和十二指肠瘘管的小尾寒羊4只,采用4×4拉丁方试验设计方法,研究了脂肪酸钙、植物脂肪粉、硬脂肪对绵羊瘤胃内环境、干物质采食量及营养物质全消化道消化率的影响。结果显示:3种过瘤胃脂肪对绵羊瘤胃pH值及氨浓度影响均不显著;在干物质采食量方面,脂肪酸钙组的采食量最高,硬脂肪组最低。但各处理与对照组以及各处理组之间,脂肪酸钙组与植物脂肪粉组的蛋白消化率比对照组要低,且在0.05水平上有差异;硬脂肪组蛋白消化率比脂肪酸钙组和植物脂肪粉组要高,其中硬脂肪组与植物脂肪粉组在0.05水平有差异;各处理组脂肪消化率均比对照组脂肪消化率要高,而且在0.05水平有差异,但处理组之间在0.05水平上无差异;植物脂肪粉组ADF和NDF比对照组消化率要低,且在0.05水平上有差异。
Four mature sheep with ruminal and duodenal cannulas were used in a replicated 4×4 Latin square design to determine the effects of 3 kinds of rumen protected fat on intake, ruminal conditions and nutrient digestion.Treaments were basal diet, basal diet plus 40 g calcium soap, basal diet plus 40 g vegetalbe tallow and basal diet plus 40 g stearin.The results showed as follows：there were no significantly difference in dry matter intake, pH value and ruminal NHa-N concentration among the treatments; treatments of the basal diet plus 40 g calcium soap.basal diet plus 40 g vegetalbe tallow and basal diet plus 40 g stearin decrease the digestibility of proteid significantly（P〈0.05 ）, the digestibility of proteid in treatment basal diet plus 40 g vegetalbe tallow is lower than basal diet plus 40 g calcium soap and basal diet plus 40 g stearin treatments （P〈 0.05 ）.fat digestibility in treatments, basal diet plus 40 g calcium soap.basal diet plus 40 g vegetalbe tallow and basal diet plus 40 g stearin are higher than treatment basal diet plus 40 g calcium soap （P〈0.05）;The digestibility of ADF and NDF in treatment basal diet plus 40 g vegetable tallow is lower than the treatment basal diet plus 40 g calcium soap （P〈0.05）.
出处
《安徽农业科学》
CAS
北大核心
2006年第10期2148-2150,共3页
Journal of Anhui Agricultural Sciences
基金
天津市自然科学基金资助项目
项目编号043611311
关键词
绵羊
过瘤胃脂肪
瘤胃环境
Sheep
Rumen protected fat
Ruminal conditions
