Fecha/hora: 11/06/2024 03:50:10

Biblioteca(s): | INIA La Estanzuela.
Tipo de la producción científica: | Artículos en Revistas Indexadas Internacionales
Circulación/Nivel: | B - 1
Fecha corriente: | 21/02/2014
Fecha de la última actualización: | 08/10/2019
Autoria: | BANCHERO, G.; PEREZ CLARIGET, R; BENCINI, R.; LINDSAY,D.; MILTON, J.; MARTIN, G.
Afiliación: | GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; RAQUEL PEREZ CLARIGET, Animal and Forage Sciences Department, Faculty of Agriculture, Avda. E. Garzón 780, 12900, Montevideo, Uruguay.; ROBERTA BENCINI, School of Animal Biology, The University of Western Australia, Crawley 6907, Australia.; DAVID LINDSAY, School of Animal Biology, The University of Western Australia, Crawley 6907, Australia.; JOHN MILTON, School of Animal Biology, The University of Western Australia, Crawley 6907, Australia.; GRAEME MARTIN, School of Animal Biology, The University of Western Australia, Crawley 6907, Australia.
Título: | Endocrine and metabolic factors involved in the effect of nutrition on the production of colostrum in female sheep. (Conference Paper).
Año de publicación: | 2006
Fuente/Imprenta: | Reproduction Nutrition Development, July 2006, Volume 46, Issue 4, Pages 447-460.
DOI: | 10.1051/rnd:2006024
Idioma: | Inglés

Contenido:

Abstract-
We investigated the physiological relationship between diet during pregnancy and colostrum production in ewes to test the hypothesis that for ewes that are in low body condition, with low fat reserves, the food supply will be the main source of energy for colostrum synthesis. To this end, we measured the amount of colostrum accumulated by ewes under two levels of nutrition. We also measured the circulating concentrations of metabolites and hormones associated with lactogenesis (beta-hydroxybutyrate, glucose, progesterone, prolactin, cortisol, growth hormone, leptin, insulin and insulin-like growth factor-I) Ewes were either under-fed at 70 (n = 15) or well-fed at 110% (n = 10) of their daily metabolisable energy requirement during the last two months of pregnancy. Colostrum accumulation up to parturition was 168 +/-48 g for under-fed ewes and 451 +/-103 g for well-fed ewes. After birth, under-fed ewes produced less colostrum than well-fed ewes but the difference was no longer significant. The level of nutrition also influenced the plasma concentrations of hormones and metabolites related to lactogenesis. Progesterone concentrations decreased before lambing in all animals but in under-fed ewes the fall appeared to be too small to initiate the onset of colostrum production. Beta-hydroxybutyrate concentrations were higher in under-fed than in well-fed ewes, suggesting that the under-fed ewes were mobilising more adipose tissue but they still did not meet their ME requirements for colostrum production. We concluded that, in underfed ewes, there are insufficient nutrients for adequate lactation and the hormone regime is inappropriate for good udder development and colostrum synthesis.

Palabras-Clave: | CALOSTRO EN OVEJA; GLUCOSE; GROWTH HORMONE; HYDROXYBUTYRATE; LACTOGENESIS; PROGESTERONE; PROLACTIN; UDDER DEVELOPMENT.
Thesagro: | OVEJA.
Categoría del tema: | L51 Fisiología Animal - Nutrición

URL:

http://www.ainfo.inia.uy/digital/bitstream/item/13449/1/Reprod.-Nutr.-Dev.-46-2006-447460-Banchero.pdf
https://rnd.edpsciences.org/articles/rnd/pdf/2006/05/r6411.pdf

Registro original: | INIA La Estanzuela (LE)
Ejemplares: | LE - (44110-1) - PXI - AP - DD - PP/Reprod Nutr Dev. /2006 -  - 87 - DIS