Effect of short-term food deprivation and prolactin upon milk yield in the lactating rabbit
Por:
Mena F., Aguayo D., Martínez-Escalera G., Grosvenor C.E.
Publicada:
1 ene 1981
Resumen:
Lactating rabbits in early lactation were deprived of food but not water for 4 or 8 hr either before or after the daily suckling on day 11 or from the 4th-8th hr after the daily suckling on day 11; rabbits in late lactation similarly were deprived of food for 8 hr after the daily suckling on day 31. In each instance, food deprivation caused a significant reduction in the amount of milk secreted during the first 8 hr following the daily suckling, but had no effect upon that secreted during the subsequent 16 hr. Prolactin (1-6 mg/12 hr) for 48 hr before food withdrawal did not ameliorate the effect of food deprivation upon milk secretion in early lactation, but fully restored milk secretion to fed control levels in rabbits during late lactation. These data support the concept that food intake is a short-term influence upon milk secretion and suggest a reduced availability of PRL as a primary causal factor in the reduced milk secretion which is characteristic of late lactation in the rabbit. © 1981.
Filiaciones:
Mena F.:
Departamento de Fisiología, Instituto de Investigaciones Biomédicas Universidad Nacional Autónoma de México, Mexico City, Mexico
Aguayo D.:
Departamento de Fisiología, Instituto de Investigaciones Biomédicas Universidad Nacional Autónoma de México, Mexico City, Mexico
Martínez-Escalera G.:
Departamento de Fisiología, Instituto de Investigaciones Biomédicas Universidad Nacional Autónoma de México, Mexico City, Mexico
Grosvenor C.E.:
Departamento de Fisiología, Instituto de Investigaciones Biomédicas Universidad Nacional Autónoma de México, Mexico City, Mexico
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