2024-03-29T07:06:11Zhttp://buleria.unileon.es/oai/requestoai:buleria.unileon.es:10612/107342020-12-10T09:05:43Zcom_10612_17col_10612_20
2019-05-12T23:52:37Z
urn:hdl:10612/10734
Evolución de un programa de inseminación en la raza Assaf en la provincia de León
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
Biologia Celular
Veterinaria
P. 675-677
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.
2019-05-12T23:52:37Z
2019-05-12T23:52:37Z
2019-05-13
info:eu-repo/semantics/bookPart
XXXIX Jornadas de Estudio. XIII Jornadas sobre Producción Animal. T. II
978-84-613-2311-1
http://hdl.handle.net/10612/10734
Z-1919-2009
info:eu-repo/semantics/openAccess
Asociación Interprofesional para el Desarrollo Agrario