Citas bibligráficas
Díaz, A., (2010). Nivel sérico de estradiol a la monta y su influencia sobre la tasa de concepción en alpacas [Tesis, Universidad Nacional Mayor de San Marcos]. https://hdl.handle.net/20.500.12672/737
Díaz, A., Nivel sérico de estradiol a la monta y su influencia sobre la tasa de concepción en alpacas [Tesis]. PE: Universidad Nacional Mayor de San Marcos; 2010. https://hdl.handle.net/20.500.12672/737
@misc{renati/477493,
title = "Nivel sérico de estradiol a la monta y su influencia sobre la tasa de concepción en alpacas",
author = "Díaz Carhuatocto, Arturo Alexander",
publisher = "Universidad Nacional Mayor de San Marcos",
year = "2010"
}
--- The objective of this study was to determine the serum oestradiol level in female adult alpacas during the first mating post-partum and its influence on the conception rate. For this purpose 85 non-pregnant and non-lactating female adult alpacas were used. Animals were mated with male adults and of proved fertility. Previously to mating, females were also evaluated by sexual receptivity to the male. Blood samples were taken by jugular venipunction to obtain serum. The samples were centrifuged by 10 minutes at 3000 rpm and serum was maintained in freezing to -20ºC, until their analysis. Subsequently, we did ultrasound evaluations to establish the conception rate on days 25-27 after mating. Pregnancy rate was determined by ultrasonography with a ALOKA SSD500 and probe of 7.5 MHz and defined as the presence of an embryonic vesicle and embryo in itself. The oestradiol determination was carried out by means of the radioimmunoassay technique (RIA) for human. The mean of oestradiol concentration was 0.78 ± 0.39 pg/ml. The values were divided in two groups according to its oestradiol level: group A (basal oestradiol level less than 0.5 pg/ml) and group B (oestradiol level > 0,5 pg/ml). The obtained results shown that majority of samples had very low, basal or undetectable concentration of oestradiol in alpacas. Oestradiol level was not affected by the categorization in pregnant and non-pregnant animals. The females pregnant presented values of oestradiol concentration (0,85 ± 0.59 pg/ml) higher than females non-pregnant (0,68 ± 0.47 pg/ml), but this difference was not statistically significant (p > 0.05).
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