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Biblioteca(s): | INIA Tacuarembó.
Fecha corriente: | 09/01/2015
Fecha de la última actualización: | 13/05/2020
Autoria: | DE BARBIERI, I.; HEGARY, R.S.; LI, L.; ODDY, V.H.
Afiliación: | LUIS IGNACIO DE BARBIERI ETCHEBERRY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ROGER STEPHEN HEGARTY, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia; L. LI, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia; VICTOR H. ODDY, Beef Industry Centre, Department of Primary Industries NSW, Armidale, NSW 2351, Australia.
Título: | Association of wool growth with gut metabolism and anatomy in sheep.
Año de publicación: | 2015
Fuente/Imprenta: | Livestock Science, Volume 173, March 2015, Pages 38-47. DOI: https://doi.org/10.1016/j.livsci.2014.12.018
DOI: | 10.1016/j.livsci.2014.12.018
Idioma: | Inglés

Notas:

Article history: Received 28March 2014; Received in revised form 10December2014; Accepted 23 December 2014. Acknowledgments: The authors thank Evelyn Osborne, Jose Velazco, Alistair Donaldson, Carolina Silveira, Mark Barnett, Reg Woodgate, Gary Cluley, Leanne Lisle, Jennie Hegarty, Koen Luijben,
Fay Haynes, Miranda Pen, Neil Baillie, Gary Taylor, Sue Mortimer and Graeme Bremner for their technical support. Ignacio De Barbieri was supported by National Institute for Agricultural Research (INIA Uruguay).

Contenido: | The hypothesis tested by this study was that sheep with divergent estimated breeding values (EBV) for fleece weight differ in gut metabolism and anatomy; regardless of the level of intake. Adult Merino wethers with contrasting EBVs for fleece weight were fed at two levels of intake in two 7-week periods in a crossover design, where wool growth, gut metabolism and anatomy of the sheep were evaluated. Regardless of the level of intake, wool genotype affected wool growth (P<0.05); however, rumen metabolism and gut anatomy did not differ between wool genotypes (P>0.05). Increases in the level of intake increased the supply of nutrients to the animal and the measured end-products of the process (wool production, live weight, methane) independent of wool genotype. The results obtained in this study indicate that differences in gut fermentation and anatomy are not a major cause of differences in wool production among sheep of different estimated genetic merit for fleece weight when fed restricted intakes.
Palabras-Clave: | COMPUTED TOMOGRAPHY; METHANE; MICROBIAL PROTEIN; RUMEN VOLUME; WOOL GENOTYPE.
Thesagro: | ANATOMIA; LANA; OVEJA; RUMEN.
Categoría del tema: | L01 Ganadería
Registro original: | INIA Tacuarembó (TBO)
Ejemplares: | TBO - (100372-1) - PXI - AP - PP - PP/LIVESTOCK SCIENCE/2015 -  -  - DIS