作　　者： ; ; ; ; ; ; ;

机构地区： 广东海洋大学农学院

出　　处： 《河南农业科学》 2011年第12期153-156,共4页

摘　　要： 为研究不同蛋白和能量水平日粮对石岐杂鸡生产性能、屠宰性能及养分表观代谢率的影响,选取21日龄体质量相近、健康的石岐杂鸡120只,随机分为4组(每组3个重复,每个重复10只)进行试验饲喂玉米-豆粕型基础日粮,Ⅰ组、Ⅱ组、Ⅲ组和Ⅳ组能量和蛋白水平分别为12.09MJ/kg和18.07%、13.09MJ/kg和18.01%、12.09MJ/kg和20.08%、13.09MJ/kg和19.93%,试验期21d。结果表明:饲喂Ⅰ-Ⅳ组不同日粮,以试验Ⅳ组的日增体质量最高(22.44g)、料肉比最低(2.70),以试验Ⅰ组的采食量最高(63.33g),但Ⅰ-Ⅳ组的日增体质量、日采食量和料肉比的差异均不显著(P>0.05);Ⅳ组粗灰分、蛋白质、脂肪和钙的表观代谢率均为最高,但和其他3组差异不显著(P>0.05);Ⅱ组和Ⅳ组较Ⅰ组和Ⅲ组可显著提高屠体质量和腿肌质量(P<0.05);Ⅱ组和Ⅳ组较Ⅲ组可显著提高半净膛质量、全净膛质量和屠宰率(P<0.05)。综合分析,能量和蛋白水平为13.09MJ/kg、18.01%的日粮对22日龄以后肉鸡较适宜。 To study the effects of different levels of protein and energy of diets on the growth performance and apparent rate of nutrient metabolism of Shihchih broilers,a total of 120 three-week-old Shihchih broilers were randomly divided into four groups,each group with three repeats.Chicks were fed with corn-soybean meal based diets in which the level of protein and energy were 12.09MJ/kg（18.07%）,13.09MJ/kg（18.01%）,12.09MJ/kg（20.08%）,and 13.09MJ/kg（19.93%） for groupsⅠ,Ⅱ,Ⅲ and Ⅳ,respectively.The experiment lasted for 21 days.The results showed that the group Ⅳ had the highest level of average daily gain（ADG） and the lowest level of Feed/Gain（F/G） while the groupⅠhad the highest level of average daily feed intake（ADFI）.Different levels of protein and energy diets did not significantly affect ADG（P〉0.05）,ADFI（P〉0.05） and F/G（P〉0.05）.The apparent utilization rate of crude protein,crude fat and calcium in group Ⅳ were the highest than the other groups,but the differences were not significant.Moreover the differences were not significant among the other groups（P〈0.05）.The carcasses weight and leg muscles weight were significantly increased in groupⅡ and Ⅳ（P〈0.05）.The all net weight loaded,half net loaded weight and slaughter rate were significantly improved in groupⅡ and Ⅳ（P〈0.05）.According to the effects of diets on slaughtering performance and meat quality of Shihchih broilers,the nutrition level of group Ⅱwas the best.

关 键 词： 饲料 能量 蛋白 石岐杂鸡 生产性能 屠宰性能 表观代谢率

领　　域： [农业科学] [农业科学]