摘要
文章旨在研究木薯完全替代玉米对肉鸭生长性能、胴体性状及血清生化指标的影响。试验将480只平均初始体重为(55.08±0.17)g的1日龄商品肉鸭随机分为4组,每组5个重复,每个重复24只。T1组肉鸭在试验全期饲喂玉米型日粮,T2组肉鸭在1~21 d饲喂玉米型日粮,22~42 d饲喂木薯型日粮,T3组肉鸭在1~21 d饲喂木薯型日粮,22~42 d饲喂玉米型日粮,T4组在试验全期饲喂木薯型日粮。结果:T2组42 d肉鸭的体重及22~42 d和1~42 d平均日增重显著高于T1和T3组(P<0.05),而T3和T4组肉鸭1~42 d平均日采食量显著高于T1组(P<0.05)。T2组22~42 d肉鸭的料重比较T3组显著降低7.8%(P<0.05),1~42 d肉鸭料重比较T1组显著降低6.70%(P<0.05)。T2组肉鸭的胸肌占比较T3和T4组分别显著提高20.44%和23.05%(P<0.05),同时T1组肉鸭腹脂占比较T2和T4组分别显著提高20%和18.18%(P<0.05)。T1组肉鸭血清甘油三酯浓度较T2组显著提高22.51%(P<0.05),同时T1组肉鸭血清胆固醇浓度较T2和T4组分别显著提高24.07%和21.31%(P<0.05)。结论:在本试验条件下,生长后期用木薯完全替代玉米可以改善肉鸭的日增重和饲料效率,降低腹脂沉积。
The experiment was conducted to investigate the effects of dietary cassava completely replacing maize on growth performance,carcass traits and serum biochemical indices of meat ducks.A total of 4801 d commercial ducks with an average initial body weight of(55.08±0.17)g were randomly divided into 4 groups with 5 replicates per group and 24 ducks per replicate.Ducks in group T1 were fed corn-type diet during the whole experiment period,ducks in group T2 were fed corn-type diet during 1~21 d,cassava diet during 22~42 d,ducks in group T3 were fed cassava-type diet during 1~21 d,corn diet during 22~42 d,and ducks in group T4 were fed cassava diet during the whole experiment period.RESULTS:Body weight and average daily gain during 22~42 days and 1~42 days in T2 group were significantly higher than those in T1 and T3 groups(P<0.05),while average daily feed intake during 1~42 days in T3 and T4 groups was significantly higher than that in T1 group(P<0.05).The feed/gain of meat ducks in T2 group during 22~42 days was significantly decreased by 7.8%0(P<0.05),and the feed/gain of meat ducks in T1 group during 1~42 days was significantly decreased by 6.70%(P<0.05).The breast muscle content in groups T3 and T4 was significantly increased by 20.44%and 23.05%(P<0.05),respectively,and the abdominal fat content in group T1 was significantly increased by 20%and 18.18%(P<0.05),respectively,compared with that in groups T2 and T4.Compared with T2 group,the serum triglyceride concentration of meat ducks in T1 group was significantly increased by 22.51%(P<0.05),while the serum cholesterol concentration of meat ducks in T1 group was significantly increased by 24.07%and 21.31%(P<0.05)compared with T2 and T4 groups,respectively.Conclusions:under the condition of this experiment,the replacement of maize with cassava can improve the daily gain and feed efficiency of meat ducks,and reduce abdominal fat deposition.
作者
张红霞
李燕
ZHANG Hongxia;LI Yan(Nanyang Vocational College of Agricultural,Nanyang,Henan Province 473003,China)
出处
《中国饲料》
北大核心
2021年第10期38-41,共4页
China Feed
关键词
木薯
肉鸭
生长性能
胴体性状
血清生化
cassava
duck
growth performance
carcass traits
serum biochemistry
