RT info:eu-repo/semantics/bookPart
T1 Evolución de un programa de inseminación en la raza Assaf en la provincia de León
A1 Álvarez García, Mercedes
A1 Martínez Pastor, Felipe
A1 Paz Cabello, Paulino de
A1 Gomes Alves, Susana Cláudia
A1 López Urueña, Elena
A1 Pérez, J. J.
A1 Aparicio, Nicomedes
A1 Nicolás, M.
A1 Mata Campuzano, María
A1 Anel Rodríguez, Luis
A2 Biologia Celular
K1 Veterinaria
K1 Sheep
K1 Cervical insemination
K1 Semen
K1 Ram
K1 León (Provincia)
AB The Assaf breed has mostly been allocated in Castilla y León, particularly inthe province of León. In 1998, a selection and genetic improvement programme was initiatedfor milk production in 38 flocks. Training of rams for semen collection using an artificialvagina reached a success rate of 74%, and the percentage of valid ejaculates has reached90%. Fertility results of artificial insemination (lambing rates) have fluctuated between 35% y40% since the programme was started. We found that fertility drops in ewes older than 4years, and that it improved about 10% in the breeding season.
PB Asociación Interprofesional para el Desarrollo Agrario
SN 978-84-613-2311-1
YR 2019
FD 2019-05-13
LK http://hdl.handle.net/10612/10734
UL http://hdl.handle.net/10612/10734
NO XXXIX Jornadas de Estudio. XIII Jornadas sobre Producción Animal. T. II
NO P. 675-677
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 03-may-2024