产蛋高峰期蛋鸡亚健康评价指标体系的构建.

[Objectives] Peak laying period is a critical period of layer breeding. The construction of a sub-health evaluation index system for laying hens during peak laying period is not only conducive to accurately evaluating the health of flocks and carrying out accurate feeding and management adjustments according to the health status of the flocks, and it can also provide reference indicators and scientific basis for non-destructive monitoring of the health status of laying hens during the peak laying period. [Methods] Based on the research on laying hen farms, data collection and expert meetings, this paper initially constructed a set of evaluation indexes for sub-health of laying hens during peak laying period from four aspects, namely, health status, behavioural performance, production performance, environment and flock information of hens, and used the expert consultation method to screen the indexes to establish the evaluation index system, and determined the indexes' weights through the hierarchical analysis method. [Results] A total of 14 experts were invited for consultation, and the effective recovery of the expert consultation questionnaire was 100%, the expert authority coefficient was 0.875, and the Kendall's coordination coefficient was 0.386, which indicated that the experts' motivation, authority, and coordination of their opinions were all better, and the final established evaluation index system included 4 first-level and 27 second-level indicators. The weights of the four first-level indicators, namely, health status, behavioural performance, production performance and henhouse environment, were 0.254, 0.245, 0.253 and 0.248, respectively. [Conclusions] This study constructed the evaluation index system of sub-health of laying hens during the peak laying period, with better reliability of expert consultation and more comprehensive coverage of evaluation indexes. [ABSTRACT FROM AUTHOR]