不同营养水平对花凤鸡产蛋性能的影响

Effects of different levels of nutrients on laying production in Huafeng layer

选择27周龄花凤鸡1080只,随机分成6组,每组6个重复,每个重复60只,A、B、C三组分别饲喂15.5%、16.5%、17.3%三个蛋白质水平日粮,A'、B'、C'三组分别饲喂棉籽粕、菜籽粕等蛋白代替A、B、C组日粮中部分豆粕的日粮。6个不同营养水平试验进行产蛋高峰期花凤鸡的营养需要研究。结果表明:产蛋率、料蛋比、耗料量随营养水平的升高而增加,其中C′组显著高于其他各组(P<0.05)。不同营养水平对花凤鸡的蛋重、破软蛋率无显著影响(P>0.05)。综合分析,产蛋高峰期,花凤鸡的营养水平饲喂代谢能为11.26 MJ/kg、蛋白质水平为17.25%的C′组日粮为最佳。

One thousand and eighty 27-week old broilers were randomly divided into 6 treatments with 3 replicates, and each replicate had 60 broilers, to study nutritional requirement for laying peak.A, B, C group were fed with diets containing about 15.5 %,16.5 % ,17.3 % protein respectively,while A＇,B＇,C＂ group were fed with diets,which were cotton seed meal and rapeseed meal partly replacing soybean meal in A, B, C diet.The results showed as follows：diets with different nutrition levels significantly influenced the egg laying rate, feed/egg ration and feed consumption;Different nutrition level diets had no significant influence on egg weight,soft-shelled ration of broilers.Metabolizable energy （ME） 11.26 MJ/ kg and crude protein（CP）17.25 % in diets C＂ was the best diet for broilers in laying peak.