Ouart M D, Harms R H, Wilson H R
Poult Sci. 1987 Mar;66(3):467-70. doi: 10.3382/ps.0660467.
An experiment was conducted using commercial egg-type hens to investigate their response to various levels of niacin supplementation of diets. Layer performance, hen nervousness, fertility, and hatchability were observed. No significant differences were found among dietary treatments for hen-day egg production, feed conversion, hen nervousness, mortality, fertility, or hatchability. Birds receiving wheat-soy diets consumed significantly (P less than .05) more feed and laid smaller eggs with higher specific gravity than hens fed corn-soy diets.
进行了一项实验,使用商品蛋鸡来研究它们对日粮中不同烟酸添加水平的反应。观察了蛋鸡的生产性能、母鸡神经质、受精率和孵化率。在日粮处理之间,蛋鸡日产蛋量、饲料转化率、母鸡神经质、死亡率、受精率或孵化率均未发现显著差异。与饲喂玉米-大豆日粮的母鸡相比,采食小麦-大豆日粮的鸡采食的饲料显著更多(P小于0.05),产蛋更小但蛋的比重更高。