Estimation of different pig genotypes by usage rate of metabolizable energy and essential aminoacids of feeds

• Published in: Зоотехническая наука Беларуси : сборник научных трудов Vol. 46; pp. 157 - 165
• Main Author: Roshchin, V.A., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
• Format: Journal Article
• Language: Russian
• Published: 2011
• Subjects: ACIDE AMINA; ALIMENT COMPOSA© POUR ANIMAUX; ALIMENT POUR ANIMAUX; AMINO ACIDS; AMINOAICIDOS; ANIMAL FATS; APTITUD CAIRNICA; APTITUDE POUR LA VIANDE; BA©LARUS; BELARUS; CERDO; COMPOUND FEEDS; CORPS GRAS ANIMAL; ENERGY VALUE; ENGORDE; ENGRAISSEMENT; FATTENING; FEEDS; GA©NOTYPE; GENOTIPOS; GENOTYPES; GRASAS ANIMALES; http://www.fao.org/aos/agrovoc#c_10613; http://www.fao.org/aos/agrovoc#c_1796; http://www.fao.org/aos/agrovoc#c_2817; http://www.fao.org/aos/agrovoc#c_2843; http://www.fao.org/aos/agrovoc#c_3225; http://www.fao.org/aos/agrovoc#c_32877; http://www.fao.org/aos/agrovoc#c_33237; http://www.fao.org/aos/agrovoc#c_342; http://www.fao.org/aos/agrovoc#c_428; http://www.fao.org/aos/agrovoc#c_7555; MEAT PERFORMANCE; PIENSOS; PIENSOS COMPUESTOS; PORCIN; SWINE; VALEUR A©NERGETIQUE; VALOR ENERGA©TICO
• ISSN: 0134-9732

In the conditions of the Republic of Belarus there was evaluated bred in the Republic genotypes of wsine according to the level of usage of metabolizable energy and nonreplaceable amino acids. The main biological peculiarity of separate breeds of pigs and their crosses proved to be a different level of usage of nutrients of mixed fodders for meat production. The most effectively there were used nutrients used in mixed feeds (metabolizable energy, crude protein and lysine) for synthesis of muscle tissues by two- and three-breed crosses - respectively, 86,1 MJ, 1229 g, 64.9 g and 85,9 MJ, 1226 g, 64.7 g. Among the purebred animals the greatest nutrients transformation into product was noticed with in gilts of Belarusian meat breed – 88,3 MJ of metabolizable energy, 1262 g of crude protein, 66,6 g of lysine counted per 1 kg of muscle tissue gain. Pigs of different genotypes (Belarusian black-motley, Landrace and Large white breeds) on nutrients intake of feeds took middle position among the above mentioned genotypes. So efficiency of feeds usage in the frameworks of one separate genetic population is greatly variable that should be taken into account when managing selection work with this group of animals.