摘要
采用4因素3水平正交试验设计,研究了维生素A对蛋鸡育雏、育成、产蛋、孵化各阶段性能的影响规律。结果:6周末胫骨Ca和P、新城疫抗体效价随日粮VA水平的提高显著增加(P<0.01)。日粮VA水平对其它指标的影响不显著(P>0.05)。
The experiment was conducted to study the effects of dietary VA on egg breed chicken by orthogonal design with four factors at three levels.Results indicated that:at6weeks of age,tibial Ca and P,antibody titer against Newcastle disease virus increased with the in-creasing of dietary VA.Dietary VA had no significant effects on other indexs.
出处
《山东家禽》
2001年第6期3-5,共3页
Shandong Poultry
