Oestrus synchronization and fertility in heifers treated with prostaglandin F2alpha.
Tijdschr Diergeneeskd
; 100(14): 758-62, 1975 Jul 15.
Article
em En
| MEDLINE
| ID: mdl-1172303
ABSTRACT
Oestrus was synchronized with prostaglandin F2alpha in Tham salt buffer (25 mg. and 12.5 mg.) injected intramuscularly on two consecutive days in 41 Dutch Friesian heifers. Thirty-five animals (85,3%) showed heat within 2-5 days of the start of treatment. Degree of synchronization was low if PGF 2alpha was injected before D5. Conception rate was low (31,4%) in the synchronized oestrus, but was normal (58%) at the post-synchronized oestrus. Based on observation for oestrus and rectal palpation of ovaries at 8 hourly intervals, oestrus occurred over a period of 62,1 +/- 3,0 hours and ovulation occurred 29,8 +/- 1,4 hours after the onset of oestrus. The average time from first treatment to ovulation was 93,0 +/- 18,8 hours. The length of the synchronized oestrus was significantly longer (P less than 0,05) than the pretreatment oestrus.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Prostaglandinas F
/
Sincronização do Estro
/
Fertilidade
Limite:
Animals
/
Pregnancy
Idioma:
En
Revista:
Tijdschr Diergeneeskd
Ano de publicação:
1975
Tipo de documento:
Article