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Objective: To determine seasonal anestrus in relation to the season of the year, feeding type, breed, and social environment variables of sheep production systems in Singuilucan, Hidalgo, Mexico.
Design/Methodology/Approach: Based on n=41 semi-structured surveys applied to the producers of the study area, a logistic regression analysis was carried out to determine the influence of the study variables on the seasonal anestrus of sheep production systems.
Results: Thirty-nine production units with seasonal anestrus periods were identified. Seasonal anestrus was influenced by the season of the year, feeding type, breed, and social environment variables (P<0.05). The anestrus periods were influenced (P<0.05) by spring (season of the year), range and shed system with concentrate feeding (feeding type), wool sheep (breeds), and the presence or absence of rams in the flock (social environment).
Study Limitations/Implications: Determining which variables influence seasonal anestrus will help to develop sheep reproductive programs.
Findings/Conclusions: Wool sheep have a seasonal anestrus in spring. The season of the year, feeding type, breed, and social environment variables influenced the seasonal anestrus of sheep production systems in Singuilucan, Hidalgo, Mexico.