摘要
孵化器开启风门时间对孵化质量的影响试验使用28周龄农大3号父母代种鸡的种蛋共33600枚,放入两台相同的孵化器中各16800枚进行孵化。一台5d正常开启风门,一台10d开启风门,中间测定孵化箱内的CO2浓度。测定延期开风门对受精率、死精率、受精蛋孵化率、入孵蛋孵化率、健雏率、死胎率的影响。试验结果表明,种蛋孵化过程中10d开启风门,受精蛋孵化率和入孵蛋孵化率提高,差异极显著(P<0.01),健雏率上升,差异显著(P<0.05),受精率和早期死胚率无明显差异。
Thirty-three thousand and six hundred hatching eggs of twenty-eight age of weeks Nongda Ⅲ breeding birds were put into two same incubators to incubate,each of them had16800eggs.One incubator normally opened the air throttle on the fifth day,another opened the air throttle on the tenth day.Determined the effect of delaying the opening time of incubator’s air throttle on fertility rate,early dead embryo rate,hatchability of fertile eggs,hatchability of hatching eggs,rate of healthy chick and stillborn rate.The result shows that during the incubation,delaying the opening time of incubator’s air throttle increased hatchability of fertile eggs and hatchability of hatching eggs and stillborn rate significantly(P<0.01),also increased the rate of heahthy chick significantly(P<0.05),but the fertility rate and early dead embryo rate did not show any obvious difference.
出处
《山东家禽》
2003年第10期10-12,共3页
Shandong Poultry
