Evolución de un programa de inseminación en la raza Assaf en la provincia de León

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Evolución de un programa de inseminación en la raza Assaf en la provincia de León

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Title: Evolución de un programa de inseminación en la raza Assaf en la provincia de León
Author: Álvarez García, Mercedes;Martínez Pastor, Felipe;Paz Cabello, Paulino de;Gomes Alves, Susana Cláudia;López Urueña, Elena;Pérez, J. J.;Aparicio, Nicomedes;Nicolás, M.;Mata Campuzano, María;Anel Rodríguez, Luis
xmlui.dri2xhtml.METS-1.0.item-contributor: Facultad de Ciencias Biologicas y Ambientales
xmlui.dri2xhtml.METS-1.0.item-area: Biologia Celular
Abstract: The Assaf breed has mostly been allocated in Castilla y León, particularly in the province of León. In 1998, a selection and genetic improvement programme was initiated for milk production in 38 flocks. Training of rams for semen collection using an artificial vagina reached a success rate of 74%, and the percentage of valid ejaculates has reached 90%. Fertility results of artificial insemination (lambing rates) have fluctuated between 35% y 40% since the programme was started. We found that fertility drops in ewes older than 4 years, and that it improved about 10% in the breeding season.
xmlui.dri2xhtml.METS-1.0.item-desfisica: P. 675-677
Publisher: Asociación Interprofesional para el Desarrollo Agrario
xmlui.dri2xhtml.METS-1.0.item-citation: XXXIX Jornadas de Estudio. XIII Jornadas sobre Producción Animal. T. II
xmlui.dri2xhtml.METS-1.0.item-isbn: 978-84-613-2311-1
xmlui.dri2xhtml.METS-1.0.item-dl: Z-1919-2009
URI: http://hdl.handle.net/10612/10734
Date: 2009
xmlui.dri2xhtml.METS-1.0.item-tipo: info:eu-repo/semantics/bookPart
Subject: Veterinaria
xmlui.dri2xhtml.METS-1.0.item-palclave: Sheep
Cervical insemination
Semen
Ram
León (Provincia)
xmlui.dri2xhtml.METS-1.0.item-accessRights: info:eu-repo/semantics/openAccess
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