Scrotal circunferenc, body weight, puberty and seminal characteristics in 1/2 Brahman x 1/4 Brown Swiss x 1/4 native crossbred young bulls

Ninoska Madrid Bury, Eduardo Noguera, Ines Rincón, Sunny Zambrano, Nestor García, Raul Canillo, Rilma Rincón

Resumen


Scrotal circumference (SC), body weight (BW), age of puberty (P) and seminal characteristics were investigated in 19 1/2 Brahman x 1/4 Brown Swiss x 1/4 native crossbred young bulls. All bulls were evaluated at monthly intervals from 8 through 24 months of age. P, BW, and SC were 16.2Ó1.39 mo, 218.5Ó30.3 Kg and 23.5Ó 1.93 cm respectively. As age and BW increased SC increased (P < .01). The incidence of sperm abnormalities decreased (P < .01) as SC increased. The SC was correlated positively with age)(r= .92; P < .01), BW (r= .94; P <. 01) ejaculated volume (r=.55; (r=.69; P <. 0.1), sperm concentration (r=.54; P <. 01), progressive motility (r= .69; P <. 01) and % normal sperm (r= -.65; P <. 01) and negatively with % abnormal sperm (r= .65; P < .01).


Palabras clave


crossbred bulls; puberty; testicular development

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Universidad del Zulia /Venezuela/Revista de facultad de agronomía/ agrorevistaluz@gmail.com  /ISSN: 0378-7818

 

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