新型精液保护剂对种鸡精液质量的影响

种公鸡携带病原体传递给后代的问题由来已久,作为垂直传播的一个途径其危害不容小视,可致雏鸡死亡率高、后代生长不良、疫病代代相传、生产力低下,甚至给环境保护、可持续发展带来挑战。试验对新研发的一种精液保护剂进行了评价。1通过两种稀释比例、经过4个不同时间点,检测了新型精液保护剂对大肠杆菌、金黄色葡萄球菌、绿脓杆菌的杀灭率,结果表明,新型精液保护剂对三种细菌的杀灭率分别达到99.99%、99.99%和100.00%;2对加入新型精液保护剂后的种鸡精液在不同时间点进行精子活力测定,结果各时间点的精子活力均明显高于空白试验组。综合表明,该新型精液保护剂不但可杀灭精液中的病原体,而且可以提高精子活力。

大午金凤种鸡精液稀释输精效果研究

选择大午金凤种母鸡1000只,分为对照组和实验组,每组500只,实验组使用稀释液1倍量稀释后的精液输精,对照组使用原精液输精,分别收集种蛋并入孵,连续孵化8批,记录种蛋受精率、孵化率、死胎率、毛蛋率等。分析比较结果表明,实验组种蛋受精率、孵化率均显著低于对照组,毛蛋率、死胎率均显著高于对照组。说明稀释后的精液输精效果不佳,虽然精液稀释能降低公鸡的饲养数量,相应降低一些成本,但相比而言,因精液稀释导致的种蛋受精率、孵化率显著降低、毛蛋率显著增加的损失非常大,这个损失足以弥补多饲养公鸡而提高的成本。

Effects of Magnetic Field on the Quality of Chicken Semen Stored at Low Temperature

[ Objective] The study aimed to explore the effects of magnetic treatment on the quality of chicken semen stored at low temperature. [ Method] 5 ml fresh chicken semen was divided into five groups equally, each of which was diluted at the volume ratio 1：4. With the group without magnetic treatment as the control, the other four groups were magnetized for 6, 12, 24 and 48 min in the self-made magnetizer, respectively. Subsequently, all the five groups were stored at 2 -4 ℃, and the sperm motility, survival time, survival index and deformity rate were observed regularly. [ Result] Comparing with the control group, the magnetic groups showed higher sperm motilities and effective survival indices as well as lower deformity rates. The effective survival index of the group magnetized for 24 min was the highest and increased by 7.75% in con- trast to the control. [ Conclusion] Magnetic treatment can effectively enhance the quality of chicken semen stored at low temperature.