梯度饲喂茭白鞘叶对生长獭兔体重、采食量和消化率的影响

Effects of Feeding Sheathing Leaf of Zizania Latifolia on Body Weight,Feed Intake and Digestibility of Growing Rex Rabbit

通过梯度饲喂茭白鞘叶对生长獭兔体重、采食量和饲料营养物质消化率的影响,为獭兔合理利用茭白鞘叶提供依据。50日龄生长獭兔按照体重和性别分成4组,分别饲喂含0、10%、30%、50%茭白鞘叶的日粮（粗饲料总量为50%,不足部分由花生秧粉补足）,测定试验30 d6、0 d獭兔体重、采食量和饲料营养物质消化率。结果显示：添加茭白鞘叶对生长獭兔体重、饲料中粗蛋白、粗纤维和粗灰分的消化率有显著影响,其中以添加10%茭白鞘叶组的体重最大,试验第30 d添加10%茭白鞘叶组饲料粗纤维和粗灰分的消化率显著提高,第60 d饲料粗蛋白和粗灰分的消化率略有下降;试验兔第30 d和60 d的日采食量、前期（1~30 d）和后期（31~60 d）累计采食量没有统计差异;性别和性别×组别交互效应对体重、采食量和饲料养分消化率影响不显著。结果提示,茭白鞘叶可以作为獭兔粗饲料,其中以10%~30%茭白鞘叶与豆科饲料混合饲喂具有较高的增重、消化率和饲养效果。

To provide evidence for growing Rex Rabbit utilizing sheathing leaf of zizania latifolia（SLZL） rationally,the index of body weight,feed intake and digestibility of diet nutrient were measured by feeding different proportions of SLZL for Rex Rabbit.At the age of 50 d,Rex Rabbit were divided into four groups according to body weight and sex,and fed experimental diet including 0,10%,30% and 50% SLZL（Total roughage concentration was 50%,and the shortage was supplemented by peanut straw in the experimental diets）.The index of body weight,feed intake and digestibility of diet nutrient were determined at 30 d and 60 d after the feeding experiment.The results showed that SLZL significantly affected body weight and digestibility of crude protein,crude fiber and crude ash.Body weight of Rex Rabbit feeding 10% SLZL was the best among experimental groups,the digestibility of crude fiber and crude ash increased significantly after 30 d experiment,and the digestibility of crude protein and crude ash decreased slightly after 60d experiment.Daily feed intake at 30 d and 60 d after experiment,accumulative feed intake from 1d to 30 d and 31 d to 60 d were no significant differences among groups.Effects of sex and sex×group on body weight and nutrient digestibility were not significant.As a result,SLZL could be used as Rex Rabbit roughage,and feeding 10%~30% SLZL with legume feedstuffs might obtain better body gain,nutrient digestibility and feeding effects.