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vol.24 número3EVALUACIÓN DE LA COMPETITIVIDAD DEL KIWI NEOZELANDÉS Y CHILENO EN EL MERCADO DE EE.UU. ENTRE LOS AÑOS 1994-2004EFECTO DE LA DENSIDAD DE POBLACIÓN Y LA FERTILIZACIÓN SOBRE LAS CARACTERÍSTICAS DE LOS FRUTOS DE ALGODÓN (GOSSYPIUM HIRSUTUM L.) índice de autoresíndice de assuntospesquisa de artigos
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Idesia (Arica)

versão On-line ISSN 0718-3429

Resumo

ALEMAN, D; ALFARO, M  e  HURTADO, E. EFFECT OF SEMEN TEMPERATURE ON THE REPRODUCTIVE ANSWER OF SOWS. Idesia [online]. 2006, vol.24, n.3, pp.33-37. ISSN 0718-3429.  http://dx.doi.org/10.4067/S0718-34292006000300005.

With the purpose of evaluating the effect of semen temperatures on the reproductive answer of nuliparous, primiparous and multiparous sows, there were used 91 Yorkshire and Landrace half-breed sows, in a commercial farm located in Sabaneta, Monagas state, Venezuela. The treatments were distributed in a factorial arrangement (3x2) on a complete random design. The factors identified were the following: categories of parturition (nuliparous, primiparous and multiparous) and semen temperatures (37 °C and 16-18 °C). The dependent variables were farrowing rate (FR), number of piglets born alive (NPBA) and number of total born piglets (NTBP). The data were analyzed through variance analysis by the method of the minimum squares, with a lineal model of fixed effects, for an unequal number of observations. It was observed an effect (P<0.05) semen tempera-ture and interaction categories of parturition x semen temperature on the farrowing rate. The average values found were 79.13% for 37 °C and 55.42% for 16-18 °C, while the largest average (85.57%) in interactions occurred in nuliparous sows inseminations with semen at 37 °C. The NPBA and NTBP did not present difference (P>0.05) in factors of study. In conclusion, interaction categories of parturition x semen temperature affect reproductive answer (farrowing rate).

Palavras-chave : Sows; IA; semen temperature; reproductive answer.

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