Improve the accuracy of chicken leg disease assessment by combination of gait score and X-ray scan

文献类型： 外文期刊

第一作者： Zheng, J.

作者： Zheng, J.;Zhang, G.;Ding, J.;He, Z.;Li, Q.;Liu, R.;Wen, J.;Zhao, G.;Liu, D.

作者机构：

关键词： white feather broiler; gait score; X-ray; leg health; growth trait

期刊名称：JOURNAL OF APPLIED POULTRY RESEARCH （ 影响因子：1.9； 五年影响因子：1.8 ）

ISSN： 1056-6171

年卷期： 2023 年 32 卷 2 期

页码：

收录情况： SCI

摘要： With the overselection of broiler body weight (BW) and breast muscle weight (BMW), the incidence of leg disease has been gradually increasing, which has seriously affected the wel-fare and industrial economic development of broilers. In this study, we used gait score and X-ray to evaluate the leg health of fast large white-feather broiler chickens at the age of 6 to 7 wk. The combined use of the 2 methods improved the detection rate and accuracy of diagnos-ing chicken leg disease. Moreover, more than 70% of chickens with abnormal gait scores also appeared abnormal on X-ray. At the same time, the 40-day BW, 42-day BMW, 28-to 40-day body weight gain (BWG) and tibial bone strength (BS) of the abnormal broilers were signifi-cantly lower than those of normal chickens. The 28-to 40-day feed conversion rate (FCR) sig-nificantly increased relative to normal chickens (P < 0.05). The comprehensive application of this method would be more suitable for evaluating of commercial broiler leg diseases, and pro-viding a more complete set of in vitro evaluation criteria for broiler leg diseases.

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