8～11周龄东兰乌鸡适宜代谢能和粗蛋白水平研究
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摘要
为了研究饲粮代谢能和粗蛋白水平对8～11周龄东兰乌鸡生产性能、营养物质表观消化率和血清生化指标的影响,试验选取810只8周龄东兰乌鸡并随机分成9个处理组,每个处理设3个重复,每个重复30只鸡,进行营养代谢试验。饲粮设置3个代谢能水平(11. 39 MJ/kg、11. 97 MJ/kg、12. 55 MJ/kg)、3个粗蛋白水平(15%、17%、19%),共9种饲粮,每组试验鸡随机分配一种饲粮,试验为期4周。结果表明:饲粮代谢能和蛋白质水平对8～11周龄东兰乌鸡平均日采食量影响不显著(P>0. 05),对平均日增重、料重比、代谢能表观消化率、粗蛋白表观消化率、尿酸含量、总蛋白含量和白蛋白含量影响明显。综合试验结果:以平均日增重和血清尿酸含量为指标,8～11周龄东兰乌鸡适宜代谢能和粗蛋白水平分别为11. 97 MJ/kg和17%;以料重比和营养物质表观消化率为指标,8～11周龄东兰乌鸡适宜代谢能和粗蛋白水平分别为12. 55 MJ/kg和19%。
To investigate the effects of dietary metabolizable energy( ME) and crude protein( CP) levels on growth performance,nutrition apparent metabolic rate and biochemical parameter of Donglan black-bone chicken aged from 8 to 11 weeks,810 Donglan black-bone chickens were selected and randomly allocated into 9 groups with 3 replication per group and 30 chickens per replication. Meanwhile,the experiment was designed with 2 factors,included 3 ME levels( 11. 39、11. 97 and 12. 55 MJ/kg) and 3 CP levels( 15%、17% and 19%) with a total of 9 kinds of diets. Then chickens in each experimental group were fed with one kind of diet in different ME and CP levels for 4 weeks. The results shows that the interaction of dietary ME level and CP level had no significant influence on ADFI( P> 0. 05),but had significant influence on ADG,F/G,ME apparent metabolic rate,CP apparent metabolic rate,UA,TP and ALB. In conclusion,based on the growth performance and UA,the appropriate dietary ME and CP additional levels for Donglan black-bone chicken was 11. 97 MJ/kg and 17%. Furthermore,measured with F/G and nutrition apparent metabolic rate,the appropriate dietary ME and CP levels was 12. 55 MJ/kg and 19% respectively.
To investigate the effects of dietary metabolizable energy( ME) and crude protein( CP) levels on growth performance,nutrition apparent metabolic rate and biochemical parameter of Donglan black-bone chicken aged from 8 to 11 weeks,810 Donglan black-bone chickens were selected and randomly allocated into 9 groups with 3 replication per group and 30 chickens per replication. Meanwhile,the experiment was designed with 2 factors,included 3 ME levels( 11. 39、11. 97 and 12. 55 MJ/kg) and 3 CP levels( 15%、17% and 19%) with a total of 9 kinds of diets. Then chickens in each experimental group were fed with one kind of diet in different ME and CP levels for 4 weeks. The results shows that the interaction of dietary ME level and CP level had no significant influence on ADFI( P> 0. 05),but had significant influence on ADG,F/G,ME apparent metabolic rate,CP apparent metabolic rate,UA,TP and ALB. In conclusion,based on the growth performance and UA,the appropriate dietary ME and CP additional levels for Donglan black-bone chicken was 11. 97 MJ/kg and 17%. Furthermore,measured with F/G and nutrition apparent metabolic rate,the appropriate dietary ME and CP levels was 12. 55 MJ/kg and 19% respectively.
引文
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[6]石天虹,阎佩佩,张桂芝,等.饲粮能量蛋白水平对7~8周龄肉仔鸡生产性能和屠宰性能指标的影响[J].饲料工业,2012,33(6):10-14.
[7]陈玉芹,赵成法,杨秀娟,等.武定鸡日粮适宜代谢能和粗蛋白质水平的研究[J].中国家禽,2016,38(1):25-31.
[8]吕铭翰,丁雪梅,白世平,等.1~28日龄二郎山山地鸡饲粮适宜的代谢能和粗蛋白水平研究[J].动物营养学报,2014,26(9):2530-2541.
[2]陈祥林,吴梦琴,宁淑芳,等.7~12周龄古典型岑溪三黄鸡营养需要量研究[J].广西农业科学,2006,37(5):589-591.
[3]瞿明仁,晏向华,龚国春,等.8~13周龄泰和乌骨鸡日粮中最适蛋白质水平的研究[J].江西饲料,1999(5):3-5.
[4]郭立宏,周景明.不同蛋白质水平日粮对肉仔鸡生长性能的影响[J].黑龙江畜牧兽医,2017(04下):76-77.
[5]康湘涛,田亚东,竹亚东.5~8周龄固始鸡能量和蛋白质需要量的研究[J].中国畜牧杂志,2002,38(5):3-6.
[6]石天虹,阎佩佩,张桂芝,等.饲粮能量蛋白水平对7~8周龄肉仔鸡生产性能和屠宰性能指标的影响[J].饲料工业,2012,33(6):10-14.
[7]陈玉芹,赵成法,杨秀娟,等.武定鸡日粮适宜代谢能和粗蛋白质水平的研究[J].中国家禽,2016,38(1):25-31.
[8]吕铭翰,丁雪梅,白世平,等.1~28日龄二郎山山地鸡饲粮适宜的代谢能和粗蛋白水平研究[J].动物营养学报,2014,26(9):2530-2541.