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当前位置: 首页 > 文章 > 低粗蛋白质日粮对长天龄三黄肉鸡生产性能及养殖效益的影响 畜牧与饲料科学 2015,36 (2) 36-40
Position: Home > Articles > Effect of Low Crude Protein Diet on the Production Performance and Culture Benefit of Long Days Three-yellow Chicken Animal Husbandry and Feed Science 2015,36 (2) 36-40

低粗蛋白质日粮对长天龄三黄肉鸡生产性能及养殖效益的影响

作  者：
YU Nan-c
单  位：
Wens Poultry C
关键词：
chickens;fed;diet;age;experimental groups;experimental grou
摘  要：
为评价饲喂低粗蛋白质日粮对长天龄三黄肉鸡生产性能及养殖效益的影响,分别开展了试验场试验与养殖户试验。于试验场选取长天龄三黄肉鸡1 600只,随机分为4组(对照组、试验1组、试验2组和试验3组),每组2个重复,每个重复200只鸡。对照组和各试验组雏鸡阶段(1~35天龄)及成鸡阶段(76天龄~上市)均饲喂常规日粮,对照组中鸡阶段(36~75天龄)饲喂粗蛋白质含量为17%的日粮,试验1组、试验2组及试验3组中鸡阶段(36~75天龄)分别饲喂粗蛋白质含量为14%、12%及10%的低粗蛋白质日粮,各组日粮的可消化必需氨基酸含量一致。选取长天龄三黄肉鸡养殖户8家,随机分成4组(对照Ⅰ组、对照Ⅱ组、试验Ⅰ组和试验Ⅱ组),每组2家养殖户,每家存栏8 000只鸡。对照组和试验组雏鸡阶段(1~35天龄)及成鸡阶段(76天龄~上市)均饲喂常规日粮,对照组中鸡阶段(36~75天龄)饲喂粗蛋白质含量为17%的日粮,试验Ⅰ组和试验Ⅱ组中鸡阶段(36~75天龄)饲喂粗蛋白质含量为14%的低粗蛋白质日粮,各组日粮的可消化必需氨基酸含量一致。其中,对照Ⅰ组、试验Ⅰ组限量饲喂,对照Ⅱ组、试验Ⅱ组自由采食。试验场试验与养殖户试验开展过程中,每天统计耗料量,试验结束时分别计算并分析各组肉鸡的上市率、个体均重、料重比、次鸡率及只均利润等指标。试验场试验结果表明,各组肉鸡上市率、料重比及次鸡率差异均不显著(P>0.05);试验3组的个体均重显著低于对照组及其他试验组(P<0.05);试验1组只均利润显著高于对照组及其他试验组(P<0.05)。养殖户试验结果表明,试验Ⅰ组的次鸡率显著高于对照Ⅰ组和试验Ⅱ组(P<0.05)。结果提示,中鸡阶段饲喂粗蛋白质含量为14%的低水平粗蛋白质日粮,能够提高三黄肉鸡的只均利润,且以自由采食方式效果最佳。
译  名：
Effect of Low Crude Protein Diet on the Production Performance and Culture Benefit of Long Days Three-yellow Chicken
作  者：
YU Nan-cai;SU Zhi-jun;QIN Kai-tian;YAO Wu-qun;TAN Hui-ze;LIU Chuang;WEI Shi;YU Yong-jie;Wens Poultry Co.,Ltd. of Ren Village of Xinxing County of Guangdong Province,Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science;Guangdong Wens Food Group Co.,Ltd.,Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science;College of Animal Science,South China Agricultural University;
关键词：
three-yellow chicken;;low crude protein diet;;restricted feeding;;ad libitum feeding;;culture benefit
摘  要：
The field experiments were carried out in chicken farm and chicken raising households to evaluated the effect of low crude protein diet on the production performance and culture benefit of long days three-yellow chicken. A total of 1 600 threeyellow chicken were selected in a chicken farm and randomly divided into four groups(control, experimental group 1, 2 and 3).There were two replications for each groupand 200 chickens in each replication. The chicks(age of 1-35 d) and adult chickens(from age of 76 d to sale) of control and experimental groups fed with routine diet, the middle age chickens(age of 36-75 d) of control group fed with diet containing 17% crude protein and those of experimental group 1, 2 and 3 fed with low crude protein diet containing 14%, 12% and 10% crude protein, respectively. The digestible essential amino acid content of diet for each group was same. A total of eight chicken raising households were selected and randomly divided into four groups(control groupⅠandⅡ, experimental group Ⅰand Ⅱ). There were two chicken raising households in each group and 8 000 chickens in each chicken raising household. The chicks(age of 1-35 d) and adult chickens(from age of 76 d to sale) of control and experimental groups fed with routine diet, the middle age chickens(age of 36-75 d) of control groups fed with diet containing 17% crude protein and those of experimental groups fed with low crude protein diet containing 14% crude protein. The digestible essential amino acid content of diet for each group was same. The ingestion behavior type of controlⅠ group and experimental group Ⅰwere restricted feeding and controlⅡ group and experimental group Ⅱwere ad libitum feeding. During the two field experiments, the daily feed consumption for each group was recorded. In the end of the experiments, the sale rate, average individual weight, ratio of feed to gain, defective chickens rate and average individualbenefit of each group were calculated and statistically analyzed. The results of the chicken farm experiment showed that there were no significant differences in sale rate, ratio of feed to gain and defective chickens rate among the groups(P>0.05). However,the average individual weight of experimental group 3 was significantly lower than that of other experimental groups(P>0.05), and the average individual benefit of experimental group 1 was significantly higher than that of control group and other experimental groups. The results of the chicken farm experiment showed that the defective chickens rate of experimental group Ⅰ was significantly higher than that of controlⅠ group and experimental group Ⅱ. It was indicated that feeding with low crude protein diet containing 14% crude protein in middle age chickens could increase the average individual benefit of three-yellow chicken,and the ingestion behavior type of ad libitum feeding was preferred.

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