The control of biological activity of PMFSG in superovulated embryo donors cows

Authors

  • Rafael Herrera Alvarez Instituto de Zootecnia, Divisão Técnica Básica e Auxiliar, Seção de Reprodução e Inseminação Artificial, Nova Odessa, SP
  • Terezinha Aparecida Martins Gomes de Castro Instituto de Zootecnia, Divisão Técnica Básica e Auxiliar, Seção de Reprodução e Inseminação Artificial, Nova Odessa, SP
  • Glaucia Maria Bovi Ambrosano Instituto de Zootecnia, Divisão Técnica Básica e Auxiliar, Seção de Estatística e Técnica Experimental, Nova Odessa, SP

Keywords:

PSMG, anti-PSMG, superovulation, embryo, dairy cow

Abstract

Thirty four Friesian cows located in two properties were superovulated between 8 and 12 days after the oestrus by injecting 2500 UI of PMSG (Pregnant Mare Seruni Gonadotrophin) (n = 21) or 32 mg FSH-P (Folicle Stimulant Hormone Pitintary) (n = 13) in decreasing doses. Fourty eight hours later a luteolitic injection of cloprostenol was given. The cows were inseminated by artificial insemination (AI) at the begining and at the end of the oestrus. At the time of the first AI, ten cows treated with PMSG were given 2 ml anti-PMSG ovine antiserum. The ovarian response was evaluated day 7 (day Ø = AI) by counting the number of corpora lutea, follicles and the number and quality of the embryos collected nonsurgically. It was not observed significant difference in the number of corpora lutea, follicles and in the number of embryos, but the percentage of transferable embryos was similar for the anti-PMSG (68,9%) and FSH-P (81.5%) treatments, both greater (P<0.05) than the treatment without the anti-PMSG (24,6).

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Published

2014-01-15

Issue

Section

ANIMAL REPRODUCTION

How to Cite

The control of biological activity of PMFSG in superovulated embryo donors cows. (2014). Bulletin of Animal Husbandry, 46(2), 241-247. http://bia.iz.sp.gov.br/index.php/bia/article/view/764

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