Data/hora: 24/04/2024 22:26:55

Biblioteca(s): 	Embrapa Caprinos e Ovinos.	
Data corrente: 	19/09/2018	
Data da última atualização: 	19/09/2018	
Autoria: 	FINDLAY, J. K.; DOUGHTON, B. W.; RUSSELL, D. L.	
Título: 	Peripheral concentrations of immunoreactive inhibin during pregnancy and parturition in the ewe.	
Ano de publicação: 	1991	
Fonte/Imprenta: 	Reproduction, Fertility and Development, v. 3, n. 5, p. 543-549, 1991.	
Idioma: 	Inglês	
Conteúdo: 	Abstract: The aim of this study was to measure the peripheral concentrations of immunoreactive inhibin (ir-inhibin) and progesterone (P) during pregnancy and parturition in the ewe and to relate the concentrations of ir-inhibin to P and to the number and sex of the fetuses. P increased across pregnancy with higher levels in ewes with 2 fetuses (n = 5) than in those with 1 fetus (n = 6), and concentrations falling before birth. ir-Inhibin concentrations were relatively stable during the first 40 days of pregnancy for example (Day 20, 34.7 +/- 2.9 pmol L-1; mean +/- s.e.m., n = 11). After Day 40, inhibin fell in all ewes to reach less than or equal to 2.5 pmol L-1 after Day 80 (mean on Day 103, 6.3 +/- 1.2 pmol L-1), and remained low until 2 days before parturition when concentrations rose sharply, peaking at or around the day of birth in all ewes (21.5 +/- 2.1 pmol L-1). Thereafter, ir-inhibin fell and remained low or undetectable for up to 10 days in the six ewes still being sampled. ir-Inhibin concentrations in ewes carrying one (n = 6), two (n = 5) or three fetuses (n = 1) did not differ at any stage of pregnancy examined. The sex of the fetus did not appear to influence the peripheral concentrations of ir-inhibin in the ewe.	
Palavras-Chave: 	Sex Factors.	
Thesaurus Nal: 	Ewes; Inhibin; Obstetric labor; Pregnancy; Progesterone; Radioimmunoassays; Sheep.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Caprinos e Ovinos (CNPC)	
Exemplares: 	CNPC - (37802-1) - ADD - AP - PP -  -  -  - DIS