Porcine luteinising hormone given at oestrus onset by intramuscular route does not advance ovulation in gilts

Ciência Rural

Moroni, Julia Linck²  Fontana, Diogo Luiz²  Sbardella, Pedro Ernesto²  Bernardi, Mari Lourdes¹  Bortolozzo, Fernando Pandolfo²  Ulguim, Rafael da Rosa²  Wentz, Ivo²  Pommerehn, Luiza² 

[1] UFRGS, Porto Alegre, Brazil;Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil

关键词: ovulation induction;    swine reproduction;    reproductive biotechniques;   

DOI  :  10.1590/0103-8478cr20141759

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

This study aimed to evaluate the use of porcine luteinising hormone (pLH) given at oestrus onset in gilts to synchronise ovulation. A total of 120 gilts (40/treatment) were assigned in three treatments: control - application of placebo by intramuscular (i.m.) route at oestrus onset; pLH2.5 - application of 2.5mg of pLH by i.m. route at oestrus onset; pLH5 - application of 5mg of pLH by i.m. route at oestrus onset. On average, the interval onset of oestrus to ovulation did not differ (P>0.05) among treatments (control - 28.7±1.6h; pLH2.5 - 28.2±1.6h; pLH5 - 27.5±1.6h). The frequency distribution of gilts ovulated in different moments after oestrus detection was not affected (P>0.05) by the treatment. In conclusion, the use of 2.5mg or 5mg of pLH given at oestrus onset in gilts by i.m. route does not advance and synchronises the interval onset of oestrus to ovulation.

【 授权许可】

Unknown