Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Mexique → Maestría → El fotoperiodo y su relación con la reproduccón del venado cola blanca (Odocoileus virginianus miquihuanensis) en el Altiplano Potosino

Colegio de Postgraduados (COLPOS) Consejo Nacional de Ciencia y Tecnología (CONACYT) 2011

El fotoperiodo y su relación con la reproduccón del venado cola blanca (Odocoileus virginianus miquihuanensis) en el Altiplano Potosino

Arenas Baéz, Pablo

Titre : El fotoperiodo y su relación con la reproduccón del venado cola blanca (Odocoileus virginianus miquihuanensis) en el Altiplano Potosino

PHOTOPERIOD AND ITS RELATIONSHIP WITH THE REPRODUCTION OF WHITE-TAILED DEER (Odocoileus virginianus miquihuanensis) IN THE SAN LUIS POTOSI PLATEAU

Auteur : Arenas Baéz, Pablo

Université de soutenance : Colegio de Postgraduados (COLPOS) Consejo Nacional de Ciencia y Tecnología (CONACYT)

Grade : Maestría en Ciencias, especialista en Ganadería 2011

Résumé
In Mexico, the white-tailed deer is the most important game species for its economic assessment, which has led to manipulate the reproduction of this species to ensure their conservation and sustainable use. For this reason, a research was conducted with the aim of defining the breeding season of white-tailed deer (O. v. miquihuanensis) in the San Luis Potosi Plateau, and to study deer semen quality, relationship of photoperiod with semen quality, and to construct a semen quality index. Three adult males deer were used, 3 ½, 4 ½ and 6 ½ years old. The collection of semen was performed monthly by electro-ejaculation, and evaluated based on mass motility (MM), individual motility (MI), sperm concentration (CON), percentage of live sperm (EV) and percentage of normal sperm (EN ). The results showed differences between months for the variables MM, MI, EV and IN, whereas the deer age showed significant differences only for the variable EN The quality index developed for qualifying semen was : . The breeding season of white-tailed deer in the Plateau of San Luis Potosi includes the months October, November, December and January, with semen quality indices of 83.96%, 87.93%, 82.61% and 80.08%, respectively. In general, the quality of semen during the breeding season defined was very good according to the established criteria. The breeding season started just as the daylight hours began to decrease below 12 h day-1 and ended just as the daylight hours began to increase over the 11 h day-1. Deer morphology changes were obtained for body weight, neck perimeter, testicle perimeter, and thoracic perimeter ; showing a maximum growth during the same period in what studied deer raised a better semen quality. In conclusion, white-tailed deer in the Highlands of San Luis Potosi had a well defined breeding season in relation to photoperiod.

Mots clés : Calidad de semen. Fotoperiodo. Reproducción. Venado cola blanca. Semen quality. Photoperiod. Reproduction. White-tailed deer. Ganadería

La Referencia

Page publiée le 19 mars 2015, mise à jour le 27 décembre 2019