摘要
将24只约15月龄的新疆细毛母羊（平均体重28．9kg）随机分为6个处理组（每处理4只），以基础日粮作对照，混合精料日粮作标准，研究不同水平棉籽粕补饲的效果。结果表明，棉籽粕补饲显著提高了（P＜0．05）绵羊的总氮采食量、氮表观消化率、氮沉积、尿囊素排出量和由尿囊素排出量估测的瘤胃微生物氮产量。补饲棉籽粕绵羊的瘤胄微生物氮产量显著低于（P＜0．05）饲喂混合精料的绵羊，这可能与前者的能量采食量较低有关。
Twenty-four Xinjiang Merino ewes (average initial live weight 28. 9kg)were randomly assigned to 6 treatments (every treatment included 4 sheep) to be used to study the effect of feeding cottonseed meal with different amount taking a daily supply 10 g urea 10 g mineral mix (C) as a CK,and C+1000 g concentrate per head per day as a standard.The results indicate that CSM supplementationincreased (P<0.05 ) total nitrogen intake, apparent nitrogen digestibility, nitrogen retention, urinaryallantoin excretion and microbial nitrogen yield from the rumen 0f the sheep estimated from the urinaryallant0in excretion.The microbial nitrogen yield from the rumen of the SM-supplemented sheep waslower (P<0. 05) than that of those offered the concentrate, which was possibly related to low energyintake by the CSM-supplemented sheep.
出处
《西北农业学报》
CAS
CSCD
1999年第1期23-26,共4页
Acta Agriculturae Boreali-occidentalis Sinica
