日粮不同粗纤维水平对幼兔生长发育的影响研究

以120只40日龄的新西兰兔为试验材料,随机分为A、B、C和D共4组。在其它营养水平相同的情况下,研究粗纤维水平分别为10%、11%、12%和13%的4种日粮对幼兔日增重、料肉比、腹泻率、经济效益等指标的影响。结果表明,试验期平均日增重以A组最高(27.78±3.85)g,且随着粗纤维水平的增加而逐渐减少(P<0.05);A组和D组分别具有最低(3.81)和最高料肉比(4.26),差异达到显著水平(P<0.05);随着粗纤维水平的逐渐增加,腹泻率呈显著下降趋势,粗纤维水平为10%时腹泻率达到26.67%;经济效益分析发现,C组的产出投入比最高。

Effect of crude fibre level on the growth performance of young rabbits

A total of 120 growing rabbits on 40 day of age were randomly selected with the average body weight probably of 1.28 ± 0.28 kg.They were allocated into four groups(A,B,C,D) with each group containing 30 individuals.Four diets were designed with different crude fibre levels of 10%,11%,12% and 13%,all of them were applied to A,B,C,and D groups,respectively.The indexes of daily weight gain(DWG),feed conversion ratio(FCR),diarrhea ratio(DR),and economic gain(EG) were evaluated.The results showed that A group has the highest DWG(27.78 ± 3.85 g),which gradually decreased along with the increased crude fibre levels(p < 0.05).The lowest and highest FCR were detected in groups A(3.81) and D(4.26).The high crude fibre level would alleviate diarrhea ratio.Among the four groups,the highest economic gain was detected in group C.These results would suggest that the proper level of dietary crude fibre is 12%.