SciELO - Scientific Electronic Library Online

 
vol.31 número2Efecto del nivel y tipo de concentrado sobre el comportamiento productivo de vacas lecheras en pastoreo primaveral1Modificación del epitelio de revestimiento del útero y desarrollo trofoblástico a los 21, 23, 28 y 36 días de la gestación en la vaca índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


Archivos de medicina veterinaria

versión impresa ISSN 0301-732X

Resumen

IBARRA, D. et al. Comparison of differents pen serving capacity tests in adult rams. Arch. med. vet. [online]. 1999, vol.31, n.2, pp.189-196. ISSN 0301-732X.  http://dx.doi.org/10.4067/S0301-732X1999000200005.

Parity rates need to be increased and one way to do this by improving the fertility of rams which in high percentages, are not apt for reproduction. For this, reproductive aptitude tests before service, which include serving capacity (SC) evaluation through a practical and trustworthy pen test should be carried out. This study was carried out to compare different SC pen tests. In experiment 1, done in December, Kilgour, Laborde and Blockey's test measured similar SC (p < 0.05). Nevertheless, in experiment 2 done in February, Laborde and Blockey's tests evaluated SC differently (p 0.05). Differences may be explained as a consequence of reproductive seasonality in rams. In both experiments, the tests estimated SC similarly whether they were done at 20 or 40minutes (p < 0.05). This allows to shorten the evaluation time for tests. This is supported in both experiments by the high correlation between reaction time to first service and total number of services (r = -0.59 y r = -0.56; p < 0.01). These results allow to think that Laborde's test may be a valid alternative of pen test of SC in adult rams in December as a complement to the classical reproductive fitness test

Palabras clave : ram; mating.

        · resumen en Español     · texto en Español

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons