摘要
采用4×4拉丁方设计研究日粮中不同DCAD值对崂山奶山羊瘤胃pH、NH3-N及瘤胃酶活性的影响。日粮干物质的DCAD值分别为0、50、100、200mEq/kg。从各采样点的平均值可以看出,日粮DCAD值对瘤胃氨态氮浓度、瘤胃pH、纤维素酶活性有显著影响(P<0.05),对α-淀粉酶活性、中性蛋白酶活性无显著影响(P>0.05)。综合不同指标测定结果,可推断干物质含量100mEq/kg的DCAD值对非哺乳妊娠的成年崂山奶山羊较适宜。
The present experiment was conducted to determine effects of different DCAD in diets on ruminal fluid pH, protein degradation and activity of three kinds of digestion enzyme in rumen of Laoshan dairy goats. A 4×4 Latin square design was adopted in this experiment. DCAD in different groups was 0,50,100,200mEq/ kgDM, respectively. The means of different sampling points showed that DCAD of diet could significantly influence the ruminal pH, content of NH3-N and activity of carboxymethyl cellulase （P〈0.05）, and there were no effects of DCAD on activity of a-amylase and neutralprotease（P〉0.05）.h could be concluded from results that the DCAD of 100mEq/kgDM was advantaged to non-pregnancy, non-lactication Laoshan dairy goat.
出处
《中国农学通报》
CSCD
北大核心
2009年第6期21-24,共4页
Chinese Agricultural Science Bulletin
基金
青岛农业大学动物科学与技术学院校内基金"高产奶牛TMR生产和饲喂技术的研究"资助(项目编号610634)
