摘要
本试验先后进行2次试验研究饲粮棉籽粕水平对不同生长阶段肉鸭屠宰性能的影响,并进一步根据屠宰性能探讨肉鸭饲粮棉籽粕的适宜水平。试验1、2均采用单因素试验设计,试验1饲粮棉籽粕水平分别为0、8.28%、16.56%、24.83%、33.11%；试验2饲粮棉籽粕水平分别为0、5.83%、11.60%、17.50%、23.30%。试验1肉鸭1～21日龄采食试验饲粮,22～35日龄采食无棉籽粕的玉米-豆粕型饲粮；试验2肉鸭1～14日龄采食无棉籽粕饲粮,15～35日龄采食试验饲粮。35日龄时每个试验的每个重复屠宰1只肉鸭测定其屠宰性能。结果表明：1）在试验1中,随饲粮棉籽粕水平的增加,肉鸭半净膛率与全净膛率线性增加（ P＜0.05）,16.56%棉籽粕组肉鸭腹脂重和腹脂率显著低于其他各组（ P＜0.05）。2）在试验2中,随饲粮棉籽粕水平的增加,饲粮棉籽粕水平线性或二次影响肉鸭活体重、半净膛重、全净膛重和胸肌重（ P＜0.05）,二次影响肉鸭的屠体重（ P＜0.05）,23.30%棉籽粕组肉鸭活体重、半净膛重、全净膛重、胸肌重及胸肌率显著低于其他各组（P＜0.05）。3）基于不同的屠宰指标肉鸭饲粮棉籽粕适宜水平为7.51%～14.78%。以上结果提示,在以可消化氨基酸平衡模式配制饲粮时,1～21日龄肉鸭采食棉籽粕高达33.11%饲粮,22～35日龄采食玉米-豆粕型饲粮对35日龄屠宰性能无显著影响；结合35日龄屠宰性能来考虑,15～35日龄肉鸭饲粮棉籽粕水平不宜超过14.78%。
This paper included two experiments which were conducted to investigate the effects of dietary cot-tonseed meal （ CSM） level on slaughter performance of meat ducks during different growth phases, and to ex-plore the optimal dietary CSM level based on slaughter performance. Experiments 1 and 2 were all used the sin-gle factor experimental design. The dietary CSM levels in experiment 1 were 0, 8.28%, 16.56%, 24.83% and 33.11%, respectively; the dietary CSM levels in experiment 2 were 0, 5. 83%, 11. 60%, 17. 50% and 23.30%, respectively. In experiment 1, ducks fed test diets during 1 to 21 days of age, and then fed corn-soy-bean meal diets without CSM during 22 to 35 days of age. In experiment 2, ducks fed a normal diet without CSM during 1 to 14 days of age, and then fed test diets during 15 to 35 days of age. At 35 days of age, one duck per replicate was slaughtered in each experiment to determine the slaughter performance. The results showed as follows： 1） in experiment 1, the eviscerated with giblet yield and eviscerated yield of ducks in-creased in a linear manner with the increasing of dietary CSM level （P〈0.05）, but the abdominal fat weight and abdominal fat yield of ducks in 16.56% CSM group were significant lower than those in other groups （ P〈0.05） . 2） In experiment 2, dietary CSM level had linearly and quadratic effects on the live weight, eviscerated with giblet weight, eviscerated weight and breast meat weight of ducks with the increasing of dietary CSM level （ P〈0.05） , and had a quadratic effect on the carcass weight （ P〈0.05） . The live weight, eviscerated with gib-let weight, eviscerated weight, breast meat weight and breast meat yield of ducks in 23.30% CSM group were significant lower than those in other groups （ P〈0. 05 ） . 3 ） The optimal dietary CSM level was 7. 51% to 14.78% of ducks based on different slaughter indexes. These results suggest that meat ducks aged from 1 to 21 days fed the diet containing 33.11% CSM which formulated based on digestible
出处
《动物营养学报》
CAS
CSCD
北大核心
2015年第2期391-399,共9页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
肉鸭现代化产业链关键技术研究集成与示范项目(2014NZ0030)
四川省科创饲料产业院项目
四川农业大学211双支计划
关键词
棉籽粕
肉鸭
胸肌率
屠宰性能
cottonseed meal
meat duck
breast meat yield
slaughter performance
