细化搜索
结果 1-6 的 6
[Water uptake in swine farms] | Consumo de agua en las explotaciones porcinas
Quiles, A. E-mail:quiles@um.es | Hevia, M.L.(Universidad de Murcia (España). Facultad de Veterinaria)
[Factors affecting the water consumption in poultry farming] | Factores que afectan al consumo de agua en la producción avícola
2001
Barragán, J.I.
Factores que afectan al consumo de agua en la produccion avicola.
2001
Barragan J.I.
[Which are the limits of nutrition in digestive safety?. Interest of the acidification in the drinking water] | ¿Cuáles son los límites de la nutrición en seguridad digestiva?. Interés de la acidificación en el agua de bebida
2002
Romero López, M.A.
Divergent selection for water consumption in Japanese quail. Genetic determinism of the trait and response to selection | Selección divergente por consumo de agua en la codorniz japonesa. Determinación genética del carácter y respuesta a la selección 全文
2009
Ragab, M., Universidad Politécnica de Valencia (España). Inst. de Ciencia y Tecnología Animal | Peiró, R., Universidad Politécnica de Valencia (España). Inst. de Ciencia y Tecnología Animal | Saleh, K. | Younis, H. | Nogal, R. | Baselga, M., Universidad Politécnica de Valencia (España). Inst. de Ciencia y Tecnología Animal
An experiment of two generations of divergent selection for water consumption, including a control line, has been carried out in Japanese quails in a farm placed in the delta of the Nile. The selected proportion was p=0.5 in both lines, high and low. The recorded traits were: body weight at 6 weeks (BW), individual egg weight (EW) and water consumption (WC), feed consumption (FC), the ratio between both (WC:FC), total egg mass produced (EM) and conversion index of feed to egg mass (IC) during a period of 30 days started at the seven week of age. Bivariate analysis of WC and each one of the other traits were performed to estimate heritabilities, genetic and residual correlations. High heritabilities (0.72-0.66) have been obtained for BW and EW, intermediate for IC (0.21) and intermediate-high for the other traits (0.30 to 0.46). The genetic correlations between WC and the other traits were always higher than 0.67 and the residual correlations lower than 0.21, excepting for WC: FC that was 0.9. The direct and correlated responses in the high line were always significant, important and favourable, in agreement with the estimated genetic parameters (between 4.6 and 16% of the trait means). An asymmetric response was showed for WC, FC and WC: FC.
显示更多 [+] 显示较少 [-]Cuales son los limites de la nutricion en seguridad digestiva?. Interes de la acidificacion en el agua de bebida.
2002
Romero Lopez M.A.
