发酵饲料对京红蛋鸡产蛋后期生产性能、血清参数及脂代谢的影响

【目的】 研究饲粮中添加发酵饲料对京红蛋鸡产蛋后期生产性能、蛋品质、血清参数及脂代谢的影响。【方法】 选取480只54周龄的京红蛋鸡随机分为2组(对照组和试验组),每组4个重复,每个重复60只蛋鸡,对照组饲喂基础饲粮,试验组在基础饲粮的基础上添加30 g/kg发酵饲料。试验预试期为10 d,正试期为56 d。【结果】 (1)在生产性能方面,与对照组相比,试验组产蛋率显著升高4.56%(P<0.05)。(2)在蛋品质方面,与对照组相比,试验组的蛋壳强度极显著提高了17.18%(P<0.01);蛋黄比例极显著提高了7.48%(P<0.01);蛋白比例极显著降低了3.69%(P<0.01);蛋黄胆固醇含量极显著降低了24.90%(P<0.01)。(3)在血清生化指标和繁殖激素方面,试验组血清钙离子含量显著升高了11.99%(P<0.05);促卵泡素和促黄体素分别显著升高了24.55%(P<0.05)和12.88%(P<0.05)。(4)血清和肝脏总胆固醇含量分别显著降低18.86%(P<0.05)和18.54%(P<0.05),肝脏高密度脂蛋白极显著升高17.69%(P<0.01)。其余指标差异均不显著(P>0.05)。【结论】 在饲粮中添加30 g/kg的发酵饲料,对京红蛋鸡产蛋后期的生产性能以及蛋品质具有一定的改善作用。

Effects of Fermented Feed on Production Performance,Serum Parameters and Lipid Metabolism of Jinghong Laying Hens during the Late Laying Period

【Objective】 To evaluate the effects of fermented feed on the production performance, egg quality, serum parameters and lipid metabolism of Jinghong laying hens during the late laying period. 【Method】 A total of 480, 54-weeks-old, healthy Jinghong laying hens were randomly divided into 2 groups with 4 replications and 60 laying hens per replication. The laying hens in the control group were fed the basal diet. And the trial groups were fed the same basal diet with 30 g/kg fermented feed. The pre-experimental period lasted for 10 days and the experimental period lasted for 56 days. 【Result】 The results showed that : Compared with that of the control group, (1) on the production performance the egg production rate of the trial group was significantly increased by 4.56% (P<0.05). (2) On the egg quality, the eggshell strength of the trial group was extremely significantly increased by 17.18% (P<0.01). The proportion of egg yolk was extremely significantly increased by 7.48% (P<0.01). The protein ratio was extremely significantly decreased by 3.69% (P<0.01). The cholesterol content of egg yolk was extremely significantly decreased by 24.90% (P<0.01). 3) On the serum biochemical indicators and reproductive hormones, the serum calcium content of the trial group significantly increased by 11.99% (P<0.05); Follicle stimulating hormone and luteinizing hormone were significantly increased by 24.55% (P<0.05) and 12.88% (P<0.05), respectively. 4) In serum and liver, the total cholesterol content was significantly decreased by 18.86% (P<0.05) and 18.54% (P<0.05), respectively. And the high-density lipoprotein was extremely significantly increased by 17.69% (P<0.01) in the liver. The other indicators were not significantly different (P>0.05). 【Conclusion】 In conclusion, under the conditions of this experiment, the addition of 30 g/kg of fermented feed to the diet has a certain improvement effect on the production performance and egg quality of Jinghong laying hens during the late laying period.