College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China; Institute of Animal Husbandry and Veterinary Medicine, Anhui Academy of Agricultural Science, Hefei, Anhui 230031, China.
College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui 230036, China.
Poult Sci. 2020 Dec;99(12):6715-6722. doi: 10.1016/j.psj.2020.09.025. Epub 2020 Sep 18.
This study examined the effects of plastic antipecking devices (PAD) on the production performance, upper beak length, behavior, and plumage condition of a local Chinese chicken breed. Three hundred sixty 63-d-old Wannan chickens with intact beaks were randomly allocated into 3 groups. Birds were fitted with the PAD at 63 d (PAD63d) and at 77 d of age (PAD77d). Control birds were not fitted with PAD. The results showed that there were no significant effects of PAD on the BW, carcass traits, and meat quality (P > 0.05). The mortality in the PAD63d and PAD77d groups was lower than that in the control group. Compared with those in the PAD77d and control groups, the feed conversion ratio (FCR) from 63 to 112 d of age was lower in the PAD63d group. The ADFI of birds from 63 to 112 d of age was lowest in birds in the PAD63d group, intermediate in birds in the PAD77d group, and highest in control birds (P < 0.05). Birds in the PAD63d and PAD77d groups showed a lower frequency of walking and running, a higher frequency of sleeping, and higher plumage scores of the back and tail than those of control birds (P < 0.05). Birds' daily walking steps in the PAD77d group decreased compared with that of birds in the control group (P < 0.05). The upper beak length at 91 d and 112 d of age was longest in birds in the PAD63d group and shortest in control birds (P < 0.05). Overall, PAD appeared to be effective at reducing mortality, FCR, overall activity, and plumage damage and increasing the upper beak length.
本研究探讨了塑料防啄装置（PAD）对中国地方鸡种生产性能、上喙长度、行为和羽毛状况的影响。将 360 只 63 日龄、上喙完整的皖南鸡随机分为 3 组。在 63 日龄（PAD63d）和 77 日龄（PAD77d）时给雏鸡戴上 PAD，对照组雏鸡不戴 PAD。结果表明，PAD 对 BW、屠体性状和肉质（P>0.05）没有显著影响。PAD63d 和 PAD77d 组的死亡率低于对照组。与 PAD77d 组和对照组相比，PAD63d 组从 63 日龄到 112 日龄的饲料转化率（FCR）较低。从 63 日龄到 112 日龄，PAD63d 组鸡的 ADFI 最低，PAD77d 组鸡的 ADFI 居中，对照组鸡的 ADFI 最高（P<0.05）。PAD63d 组和 PAD77d 组鸡的行走和奔跑频率较低，睡眠频率较高，背部和尾部羽毛评分较高（P<0.05）。与对照组相比，PAD77d 组鸡的每日行走步数减少（P<0.05）。91 日龄和 112 日龄时，PAD63d 组鸡的上喙长度最长，对照组鸡的上喙长度最短（P<0.05）。总体而言，PAD 可有效降低死亡率、FCR、总活动量和羽毛损伤，增加上喙长度。
