| Registro completo |
| Provedor de dados: |
Arq. Bras. Med. Vet. Zootec.
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| País: |
Brazil
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| Título: |
Bovine semen thermoresistance tests and their correlation with pregnancy rates after fixed-time artificial insemination
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| Autores: |
Talini,R.
Kozicki,L.E.
Gaievski,F.R.
Polo,G.
Lima,L.G.F.
Santiago,J.
Segui,M.S.
Weiss,R.R.
Galan,T.G.B.
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| Data: |
2019-12-01
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| Ano: |
2019
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| Palavras-chave: |
Sperm motility
Casa
Pregnancy rate
Beef cows
Semen thermoresistance test
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| Resumo: |
ABSTRACT The objective of the study was to determine whether or not there is a correlation between thermoresistance tests (TT) after semen thawing and pregnancy rate (PR) after fixed-time artificial insemination (FTAI). Four different TT were performed on ten samples used for AI; a rapid test (RTT) (30min / 46°C) and three slow tests (STT): STT1 (60min/38°C), STT2 (180min/38°C), and STT3 (300min/38°C). Two hundred and fifteen multiparous crossbred cows were submitted to FTAI under the following protocol: on day zero (d0) the animals received a P4 device +EB; on d7 PGF2α; on d8 P4 was removed and eCG+EC were administered; IATF was performed on d10. Three gestational diagnoses (G D) were performed on d40, d70 and d120. The mean sperm motility (%) in RTT and STTs were 19.84±6.13, 28.55±10.48, 17.62±5.87 and 8.63±3.46, respectively, and TP in the three DG 61.86%, 57.67%, and 55.81%, respectively. Through Person test a significant negative correlation (P< 0.05) was found between STT2 and PR at 60 days (r= -0.644) and between STT3 and all TPs (r= -0.774, -0.752, 0.748). It was concluded that TT parameters are not able to determine correlation between semen quality and TP.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000602085
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| Editor: |
Universidade Federal de Minas Gerais, Escola de Veterinária
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| Relação: |
10.1590/1678-4162-10994
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| Formato: |
text/html
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| Fonte: |
Arquivo Brasileiro de Medicina Veterinária e Zootecnia v.71 n.6 2019
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| Direitos: |
info:eu-repo/semantics/openAccess
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