论文部分内容阅读
试验旨在研究日粮添加胆汁酸对肉鸡生产性能、血液生化指标以及屠宰性能的影响。选取2 400只1日龄AA肉仔鸡,分为4个处理,每个处理6个重复,每个重复100只。处理1(公鸡)和处理2(母鸡)饲喂基础日粮,处理3(公鸡)和处理4(母鸡)饲喂添加500 g/t胆汁酸的日粮。在21和35日龄时统计生产性能。36日龄时,每个重复随机选取两只鸡静脉采血后屠宰,测定血清生化指标及屠宰性能。结果显示:饲养前期(1~21 d),日粮添加胆汁酸显著提高了公鸡和母鸡平均体重、平均体增重和欧洲效益指数(P<0.05),料肉比有降低趋势(P<0.1);饲养全期,公鸡生产性能极显著高于母鸡(P<0.01),日粮添加胆汁酸显著提高了肉鸡血液中总胆固醇的含量(P<0.05),显著提高了肉鸡的腿肌率(P<0.05),胸肌率也有升高的趋势(P<0.1),母鸡的腹脂率显著高于公鸡(P<0.05)。结果表明,胆汁酸能显著提高肉鸡前期生产性能,并且能改善肉鸡屠宰性能,对血液中脂肪代谢也有一定影响。
The aim of this study was to investigate the effects of dietary bile acid supplementation on performance, blood biochemical parameters and slaughter performance in broiler chickens. A total of 2,400 1-day-old AA broilers were selected and divided into 4 treatments, each dealing with 6 replicates, each with 100 replicates. Treatment 1 (rooster) and treatment 2 (hen) fed a basal diet, treated 3 (rooster) and treated 4 (hen) fed diets supplemented with 500 g / t bile acid. At 21 and 35 days of age statistical performance. At 36 days of age, two chickens were randomly selected from each vein for blood collection and slaughtering. Serum biochemical parameters and slaughter performance were determined. The results showed that dietary bile acid supplementation significantly increased the mean body weight, mean body weight gain and European Benefit Index (P <0.05), while the feed conversion ratio decreased (P < 0.1). During the whole feeding period, the performance of roosters was significantly higher than that of hens (P <0.01). The addition of bile acids significantly increased the content of total cholesterol in broiler blood (P <0.05) (P <0.05), the rate of breast muscle also increased (P <0.1), and the abdominal fat rate of hen was significantly higher than that of rooster (P <0.05). The results showed that bile acid can significantly improve the performance of pre-broiler meat, and can improve the slaughter performance of broiler, fat metabolism in the blood also have a certain impact.