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| Bitto,Immanuel I; Egbunike,Gabriel N. |
| The effects of season on the morphometric characteristics of the reproductive organs of the pubertal West African Dwarf buck in its native humid tropical environment were investigated. All morphometric characteristics as well as the derivations from both testicular and epididymal morphometry were unaffected by season (p<0.05). There were however, highly significant correlations (p<0.05, p<0.01, p<0.001) between body weight and testicular as well as epididymal morphometry. The results also showed that both testicular and epididymal morphometric characteristics in the pubertal buck are highly predictable from body weight and as such lend ground for the early selection of good sires from records of their growth rate. The non effect of season on... |
| Tipo: Journal article |
Palavras-chave: Season; Pubertal buck; Testicular morphometry; Humid tropics. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000500020 |
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| Vergara Aguirre, María del Rosario. |
| Se tipificaron los productores de ganado bovino para carne de 6 comunidades del Municipio de Zihuateutla, ubicado en la Sierra Norte del Estado de Puebla. Se obtuvo una muestra de 91 productores fijando una confiabilidad del 95% y precisión del 5% de la media en la variable de referencia. Se aplicó un cuestionario semi-estructurado con 78 variables a las que se les realizó estadística descriptiva, seleccionando aquellas que podían contribuir al análisis multivariado. Para ello, se descartaron variables con coeficientes de variación menor a 50% y, de las correlacionadas, se dejó la de mayor explicación. Las variables edad, integrantes de familia, superficie total, área agrícola, área de praderas, escolaridad y personas laborando en la unidad de producción,... |
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Palavras-chave: Ganadería extensiva; Trópico húmedo; Sistemas ganaderos; Desarrollo y Gestión de Sistemas Ganaderos; Maestría Tecnológica; Extensive grazing system; Humid tropics; Livestock systems. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1812 |
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