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Revista de Medicina Veterinaria
Article . 2015 . Peer-reviewed
License: CC BY NC ND
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Revista de Medicina Veterinaria
Article
License: CC BY NC ND
Data sources: UnpayWall
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Estadio de madurez sexual en toros de la raza nelore

Authors: Ramírez López, Camilo José; Rugeles Pinto, Clara Cecilia; Castaño Villadiego, Faider Alberto; Gómez León, Víctor Enrique; Miranda Neto, Tamires; Guimarães, José Domingo;

Estadio de madurez sexual en toros de la raza nelore

Abstract

La presente investigación se planteó con el objetivo de determinar el estado de madurez sexual de toros jóvenes de la raza nelore y su relación con el perímetro escrotal y las características seminales. Se estudiaron 1985 animales con edades comprendidas entre los 19 y los 23 meses de edad, alimentados con pasturas tropicales (Brachiaria brizantha, Brachiaria decumbes y Panicum maximun) y evaluados a través de examen andrológico. Se valoraron las características físicas del eyaculado, la morfología espermática y el perímetro escrotal (PE). Tras el examen andrológico, los animales se clasificaron como aptos para la reproducción (clase andrológica 1); aptos para la reproducción en régimen de monta natural (clase 2); no aptos para la reproducción temporalmente (clase 3) y descartados (clase 5). Para comparar las medias encontradas entre las clases andrológicas se utilizaron dos pruebas: la de Tukey, con probabilidad del 5 % de error, y la de correlaciones simples de Pearson, para verificar las relaciones entre las características estudiadas. Se encontró que el 84,5 % de los toros son sexualmente maduros. El 39,75 % de los animales aptos para la reproducción presentó un PE mayor a 34 cm, y solo el 0,71 % de la población estudiada exhibió una circunferencia escrotal inferior a 28 cm. Se registraron correlaciones altas favorables entre PE y las características físicas del semen. Se concluye que el PE es una excelente característica para evaluar y seleccionar toros jóvenes de la raza nelore.

Keywords

evaluación andrológica, andrological evaluation, precocity, sêmen, semen, scrotal circumference, avaliação andrológica, precocidade, perímetro escrotal, precocidad

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
Green
gold