Reproductive characterization of the female Mexican turkey (Meleagris gallopavo L.)

Resumen

Objective: To describe the anatomy, morphology, physiology, and reproductive characteristics of female turkeys.

Design/methodology/approach: An analysis of the practical experiences of 10 years with Mexican native turkeys was conducted and complemented with scientific literature. We focused on reproductive aspects, anatomy, physiology and assisted reproduction.

Results: Information on the breeding of Mexican native turkeys is scarce, few families in rural areas are dedicated to raising this poultry. Therefore, empirical knowledge on their management is being lost. The female turkey begins oviposition at 6 months of age with a body weight between 2 and 4 kg. The structures that make up their reproductive system are the ovary, developing follicles, left oviduct, and cloaca. The reproductive activity is initiated by photo receptors located in the retina and pineal gland, triggering follicle stimulating and luteinizing hormones release. Egg formation lasts from 24 to 26 hours. During the first year, females lay between 36 to 54 eggs in clutches of 12 to 18 eggs and in the second year from 30 to 45 eggs. Chloequez is prolactin induced. As for assisted reproduction, artificial insemination techniques in female turkeys are uncommon.

Limitations on study/implications: Few rural families raise turkeys and since they lack economic resources, reproductive strategies are not used to improve their production.

Findings/conclusions: The anatomical, morphological, physiological and reproductive characteristics of the native female turkeys from Mexico were documented. In native turkeys, artificial insemination techniques are not of common use, but their implementation may be adequate to conserve genetic material from animals with outstanding characteristics.