• Breed and environmental factors of sows and their repeatabilities in central Mexico 

      JOSE CANDELARIO SEGURA CORREA; JOSE HERRERA CAMACHO; ROSA ELENA PEREZ SANCHEZ; ERNESTINA GUTIERREZ VAZQUEZ
      Background: reproductive traits influence lifetime productivity of sows. Objective: to determine the effects of year and season of farrowing, parity number, and breed, on litter size at birth, weaning to service interval ...