不同光照周期对蛋鸡高峰期血液生化指标的影响

Effect of Different Photoperiods on Blood Biochemical Parameters of Hens

选用20周龄海兰褐商品蛋鸡320只,随机分为8组,每组4个重复,每个重复10只鸡。试验处理采用渐增和骤增2种光增方式和4种光照周期,光周期设11L∶13D,13L∶11D,15L∶9D,17L∶7D 4个水平。结果表明,不同光增方式及光照时间对鸡体一些生化参数、代谢反应有一定影响,试验Ⅳ组血浆总蛋白、球蛋白含量和碱性磷酸酶活性最高。试验Ⅵ组,血钙、血磷含量最高(P<0.05)。同一光照时间,骤增光照处理组的血糖浓度低于缓增光照处理组,光照时间长,血糖浓度高。试验Ⅷ组谷丙转氨酶的活性、尿素氮含量最高。

The objective of this research was to study the different photoperiod on blood biochemical parameters of hens. At the age of 20 week, 320 Hyline （Brown） commercial hens were randomly assigned to 8 groups, with four replications per group, 10 chickens in each replication. Photoperiods, which have four levels 11L： 13 D, 13 L ： 11 D, 15L： 9D, 17L：7D, according two methods abruptly increscent and slowly increscent achieved. The results showed as follows： different lighting increments had some effects on biochemical parameters, metabolize in surge period. Group Ⅳ had higher protein, globulin and ALP than other groups. Group Ⅵ had higher calcium, phosphorus in blood than other groups （P 〈 0.05）. The same lighting period, different lighting increment, abruptly increment had higher blood sugar than slowly increment groups, with the longer photoperiod , the higher content of blood sugar. GPT and urea nitrogen in group Ⅷ were higher than other groups. In a word, 13L： liD photoperiod with slowly increscent would be better in the production of hens.