SERUM OESTRADIOL LEVEL DURING MATING AND ITS EFFECT ON CONCEPTION RATE IN THE ALPACA

• Autores: Díaz C., Arturo, Huamán U., Héctor, Camacho S., José, Ampuero B., Antonio, Quispe M., Daniel, Huanca L., Wilfredo
• Formato: artículo
• Fecha de Publicación: 2011
• Institución: Universidad Nacional Mayor de San Marcos
• Repositorio: Revistas - Universidad Nacional Mayor de San Marcos
• Lenguaje: español
• OAI Identifier: oai:ojs.csi.unmsm:article/330
• Enlace del recurso: https://revistasinvestigacion.unmsm.edu.pe/index.php/veterinaria/article/view/330
• Nivel de acceso: acceso abierto
• Materia: Alpaca; estradiol; concepción; radioinmunoensayo; alpaca; oestradiol; conception; radioimmunoassay

The aim of the study was to determine the serum oestradiol level in adult alpacas during the first post-partum mating and its effect on conception rate. It was selected 85 non-lactating female adult alpacas without calf at foot. Sexual receptive females were mated with a male of proven fertility. Blood samples were collected at mating and the level of oestradiol in serum was determined by radioimmunoassay. Conception was determined by ultrasound at 25-27 days of mating. Oestradiol values were distributed in two groups: A (<0.5 pg/mL) and B (>0.5 pg/mL), where the mean was 0.78 ± 0.39 pg/mL. Conception rate in alpacas with low oestradiol level at time of mating was 52.5% and in alpacas with high level was 66.7% without significant difference. Results indicate the lack of influence of oestradiol levels on conception rate.