Attenuation by leptin of the effects of fasting on ovarian function in hens (Gallus domesticus).
Reproduction
; 126(6): 739-51, 2003 Dec.
Article
em En
| MEDLINE
| ID: mdl-14748693
ABSTRACT
Thirty-four-week-old laying hens received injections of recombinant chicken leptin to assess the role of leptin in avian ovarian function. In the first experiment, the hens (n=60) were divided into three groups (i). fed ad libitum; (ii). fasted; and (iii). fasted + leptin. Hens were fasted for 5 days and those treated with leptin received 250 microg leptin kg-1 body weight twice a day, i.p. In the second experiment, the hens (n=72) were divided into four groups (i). fed ad libitum; (ii). fasted; (iii). fasted + leptin given only during fasting (5 days); or (iv). fasted and leptin given during both fasting and 5 days of re-feeding (10 days). LH was measured in blood plasma, and progesterone and oestradiol were measured in blood plasma and the ovary by radioimmunoassay. Apoptosis was examined in the walls of the three largest yellow hierarchical follicles (F3-F1; F3
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ovário
/
Adaptação Fisiológica
/
Galinhas
/
Jejum
/
Leptina
Limite:
Animals
Idioma:
En
Revista:
Reproduction
Ano de publicação:
2003
Tipo de documento:
Article