REVIEW OF IN VIVO-METHODS FOR QUANTITATIVE MEASUREMENT OF PROTEIN DEPOSITION RATE IN ANIMALS WITH EMPHASIZE ON SWINE

摘要

Most societal important breeding traits have an economic and a no economic value, and are sufficiently heritable for effective genetic selection. Genetic selection goals include the improvement of production traits, such as growth rate (g/day), meat percent (%), feed efficiency, and piglet production, because these traits are economically important. Because of their high relationship with the growth rate and feed efficiency, and the fact thatthey are inherently related with the animal health and welfare, the traits muscle leangain (g/day) and protein deposition rate (g/day) are useful measurements. Intensive pork production within large animal populations requires a special care to reduce the negative consequences of animal production on the environment. Growth models can beused to evaluate the nutrient content of the diets fed to minimize nutrient excretion. However, these models require the pigs' compositional growth to be parameterized (Schinckel and de Lange, 1996)The aim of this review is to compare different methods for in vivo quantitative estimation of protein deposition in pigs and other animals. The main criteria for the involving of in vivo methods for quantitative estimation of chemical body composition ar