日粮代谢能和粗纤维水平对雏鹅屠宰性能的影响

Effects of Dietary Metabolizable Energy and Crude Fiber Levels on the Slaughter Performance of Young Geese

为了探究雏鹅生长过程中饲粮的适宜代谢能和粗纤维水平,试验选取1日龄270只雏鹅,分为9个试验组,设置低(10.8 MJ/kg)、中(11.8 MJ/kg)、高(12.8 MJ/kg)3个代谢能水平以及低(3.5%)、中(5.5%)、高(7.5%)3个粗纤维水平,研究不同代谢能和粗纤维水平对1~28日龄雏鹅屠宰性能的影响。结果表明,代谢能水平11.8 MJ/kg、粗纤维含量3.5%的Ⅳ组雏鹅宰前活重、屠体重、胸肌重、胸肌率均最高;代谢能水平10.8 MJ/kg、粗纤维含量3.5%的Ⅰ组全净膛重、腿肌重、腹脂重和全净膛率最高;Ⅱ组屠宰率和半净膛率最高。以上结果表明,在育雏期饲喂中代谢能、低粗纤维水平的日粮可以提高雏鹅部分屠宰性能。

In order to study the appropriate dietary metabolizable energy and crude fiber level during the growth process of young geese,270 one-day-old young geese were selected and divided into 9 experimental groups.Three metabolizable energy levels[low(10.8 MJ/kg),medium(11.8 MJ/kg)and high(12.8 MJ/kg)]and three crude fiber levels[low(3.5%),medium(5.5%)and high(7.5%)]were designed to study the effects of different metabolizable energy and crude fiber levels on the slaughter performance of 1-28 day-old young geese.The results showed that the live weight before slaughter,carcass weight,breast muscle weight,breast muscle percentage were the highest in groupⅣwith the metabolizable energy of 11.8 MJ/kg and crude fiber content of 3.5%.The eviscerated weight,leg muscle weight,abdominal fat weight and eviscerated rate were the highest in groupⅠwith the metabolizable energy of 10.8 MJ/kg and crude fiber content of 3.5%.The slaughter rate and half eviscerated rate were the highest in groupⅡ.The above results showed that feeding the diet with medium metabolizable energy level and low crude fiber content could increase some slaughter performance of young geese during the brooding period.