日粮中添加微生态制剂对樱桃谷鸭生产性能的影响

试验旨在研究日粮添加不同水平微生态制剂对樱桃谷鸭生产性能的影响,确定最佳添加水平。选用1日龄樱桃谷鸭750只,随机分成5个组(试验Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ组,Ⅴ组为对照组),每组设3个重复,每个重复50只。分别在基础日粮中添加500、1000、1500、2000和0 mg/kg微生态制剂,饲养至42日龄。结果表明,添加1000和1500 mg/kg的微生态制剂促生长效果显著高于对照组(P<0.05);添加1000 mg/kg微生态制剂的肉鸭全程料重比最佳;添加500 mg/kg的微生态制剂组对肉鸭增重不明显;添加2000 mg/kg的微生态制剂组优于对照组和500 mg/kg添加组,但差异不显著(P>0.05)。因此,日粮微生态制剂能促进樱桃谷肉鸭的增重、降低料重比,从而提高其生长性能、产肉性能及养殖效益,1000 mg/kg微生态制剂能取得最佳料重比和经济效益,1500 mg/kg微生态制剂能取得最佳产肉性能,由此可知,添加1000 mg/kg微生态制剂为最佳添加水平。

Effects of Dietary Probiotics Supplementation on Growth Performance of Cherry Valley Duck

The objective of this study was to investigate the effects of dietary probiotics supplementation on growth performance and to ascertain the best additional level.A total of 750 one-day-old Cherry valley ducks were randomly allotted into 5 groups(the experimental groupⅠ,Ⅱ,Ⅲ,Ⅳ and the control group Ⅴ)with 3 replicates of 50 ducks each.Each group was fed the basal diet supplemented with 500,1000,1500,2000 and 0 mg/kg probiotics to 42 days of age,respectively.At the end of 14,28 and 42 days of age,average body weight and feed to gain ration were calculated.Ducks fed diets supplemented with 1000 and 1500 mg/kg probiotics had significant higher(P<0.05)growth performance than those fed with the control group;diets supplemented with 1000 mg/kg probiotics had the best material meat rate;diets supplemented with 500 mg/kg probiotics was not significant than the control group;diets supplemented with 2000 mg/kg had higher(P>0.05)growth performance than those fed with 500 mg/kg and the control group.Dietary probiotics supplementation could increase body weight,reduce material meat rate,then improve its growth performance,meat performance and economic efficiency,diets supplemented with 1000 mg/kg probiotics could get the best material meat rate and economic efficiency;diets supplemented with 1500 mg/kg probiotics could obtain the best meat performance;diets supplemented with 1000 mg/kg probiotics was the best additional level.