Fecha/hora: 13/06/2024 09:38:13

Biblioteca(s): | INIA La Estanzuela; INIA Treinta y Tres.
Fecha corriente: | 12/09/2014
Fecha de la última actualización: | 17/09/2019
Autoria: | SPHOR, L.; BANCHERO, G.; CORREA, G.; OSORIO, M.T.M.; QUINTANS, G.
Afiliación: | BANCHERO HUNZIKER, GEORGGET, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; QUINTANS ILARIA, GRACIELA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay.
Título: | Early prepartum shearing increases milk production of wool sheep and the weight of the lambs at birth and weaning.
Año de publicación: | 2011
Fuente/Imprenta: | Small Ruminant Research, v. 99,  p. 44-47, 2011.
ISSN: | 0921-4488
DOI: | 10.1016/j.smallrumres.2011.03.007.
Idioma: | Inglés
Notas: | Article history: received 6 November 2010; received in revised form 18 February 2011; accepted 3 March 2011; available online 13 April 2011.

Contenido:

Abstract:
The use of mid prepartum shearing has been described as a possible tool to increase the weight of the lambs at birth and at weaning. The effect of prepartum shearing (53 days of gestation) on production and chemical composition of milk, weight of the lambs at birth and weaning and growth rate were evaluated in this trial. Twenty Polwarth ewes were inseminated with rams of the same breed in May (autumn), 2009. All ewes bore singletons and were maintained together under cultivated grazing conditions, during the experimental period. The ewes were allocated to two treatments groups, based on expected day of parturition, body weight and BCS of the dams. Ten ewes were shorn at 53 days of gestation (S53) and 10 ewes were kept unshorn during gestation (US). Milking of the ewes was recorded 7 days after parturition, and this was repeated weekly for 15 weeks. Milk production of the S53 ewes was 22.2% higher (P < 0.05), when compared to US control ewes –
with no change in the milk composition. At lambing, the lambs born to the S53 ewes were 1.41 kg (P < 0.05), and at weaning 4.5 kg heavier (P < 0.05), than lambs born to US ewes. In conclusion, it can be said that the higher weaning weight of the S53 lambs was the result of both a higher birth weight and an increased growth rate up to weaning in part, due to an improved milk production of the ewes.

Palabras-Clave: | BIRTH WEIGHT; CHEMICAL COMPOSITION; COMPOSICIÓN DE LA LECHE; ESQUILA PREPARTO TEMPRANA; MILK PRODUCTION; PESO AL DESTETE; PESO AL NACER; SECRECIÓN DE LECHE; SEGUIMIENTO DE LA PREÑEZ EN OVEJA; SEGUIMIENTO POSPARTO EN OVEJA; SHEARING; SUPERVIVENCIA DE CORDEROS.
Thesagro: | COMPOSICION QUIMICA; CORDEROS; OVEJAS; OVINOS; PRODUCCION DE LECHE; PRODUCCIÓN OVINA.
Categoría del tema: | L53 Fisiología Animal - Reproducción
Registro original: | INIA La Estanzuela (LE)
Ejemplares: | TT - (32727-1) - PXI - AP - PP - PP/Quintans/Arb/2011/2 -  -  - DIS