吡啶羧酸铬对重产蛋鸭生产性能的影响

Effect of Chromium Picolinate on the Reproductive Performance of Resuming Laying Ducks

选用停产后重新开产前的金定鸭90只,研究日粮中添加不同水平吡啶羧酸铬对重产蛋鸭生产性能的影响。日粮中添加铬水平分别为0、100、200、400、800μg/kg。试验期为6周。结果表明,日粮中添加吡啶羧酸铬200μg/kg和400μg/kg有促进重产蛋鸭早期开产的趋势,提高产蛋率、平均蛋重和蛋壳品质。重产蛋鸭日粮适宜铬水平为200～400μg/kg,过高或过低的铬水平均不能发挥重产蛋鸭的最佳地生产性能。

Jinding ducks,which resumed to lay eggs after stopping laying,were used to evaluate the effect of different dietary chromium picolinate levels on the laying performance. Diet was respectively supplemented with 0?100?200?400?800μg/kg chromium picolinate for 6 weeks.The results showed that chromium picolinate at 200～400μg/kg promoted resuming laying ducks to lay eggs earlier,enhanced egg productive ratio,mean egg weight and quality of egg shell.The results suggested that the appropriate chromium level is 200～400μg/kg,higher or lower chromium level couldn't develop the productivity of resuming laying ducks well.