泛酸对种母鸡繁殖性能的影响

选用２４００羽艾维菌父母代种母鸡分４组，饲喂不同水平的泛酸饲料，添加量分别为０，５０，１００，１５０ｍｇ·ｋｇ－１日粮，在夏季进行为期６０ｄ的饲养试验，研究炎热季节泛酸对种母鸡生产性能和繁殖性能的影响。结果表明，高剂时泛酸提高种母鸡的产蛋量（Ｐ＜００１）、蛋重（Ｐ＜００５）和采食量（Ｐ＜００５）泛酸具有改进蛋品质的作用，提高浓蛋白高度、哈夫单位（Ｐ＜００１），促进蛋黄的合成（Ｐ＜００５），降低蛋黄中胆固醇含量（Ｐ＜００１），增加蛋壳的厚度和强度（Ｐ＜００５）；泛酸提高种蛋的受精率和孵化率（Ｐ＜００５），对降低胚胎后期死亡率有明显的作用。

STUDY ON THE EFFECTS OF PANTOTHENIC ACID ON REPRODUCTIVE PERFORMANCE OF BREEDING HENS

The experiment was conducted with Avain breeding hen to determine the effects of dietary supplemental pantothenic acid on the reproductive performance for 60 d in summer 240 hens were divided into four groups, were fed diets containing 0, 50, 100 and 150 mg·kg -1 of added pantothenic acid respectively The result were as follows: High dose pantothenic acid could increased egg production (P<0 01), egg weight (P<0 05) and feed intake (P<0 05), and reduced egg breakage and abnormality (P<0 05) Pantothenic acid could improved the egg quality ,significantly increased Haugh value (P<0 01),shell thickness and shell strength (P<0 05).Pantothenic acid aoso decreased total cholesterol in egg yolk(P<0 01)but increased egg from weight (P<0 05).The fertility and hatchability were significantly increased eggs from for hens fed supplemental pantothenic acid(P<0 01).Addition of panothenic acid to diets had significantly effects on reducing the firststage and poststage embryonic mortality (P<0 01)