摘要
探讨了高(H)、低(L)粗饲料分级指数(G I)混合粗饲料与不同比例精料(9∶1、8∶2、7∶3与9∶1)组成的日粮对绵羊饲料转化效率的影响。从饲料转化效率看,自低到高的排序为:H9∶1>H8∶2>L7∶3>L9∶1,差异极显著(P<0.01)。结果表明:由高G I混合粗饲料组成的日粮不用增加精料即可获得好的增重效益,由低G I混合粗饲料组成的日粮只有增加精料才有可能达到高G I混合粗饲料日粮的效益。
This paper studied the feed conversion rate (feed/galn ratios) of four mixed rations with different grading index (GI) values of mixed forages and different forages/concentrate ratios. The treatments were combinations of high (H) or low (L) GI mixed forages with concentrates in different ratios (9: 1, 8: 2,7: 3 and 9:1 individually). The results from the conversion rate showed from high to low was H9:1 〉 H8:2 〉 L7:3 〉 L9: 1. There were greatly significant differences among these 4 mixed rations(P 〈 0.01). This indicated that high GI mixed forages ration could get good feed conversion rate without adding concentrates, but low GI mixed forages ration could do that when only adding the concentrates.
出处
《江西农业学报》
CAS
2007年第2期81-83,97,共4页
Acta Agriculturae Jiangxi
基金
草地利用及舍饲技术开发-高效秸秆利用营养工程技术配套产品的研究(20020607)