Indicators of productivity and quality of eggs of egg chicken cross in the RUE 'Poultry Breeding Plant Belarus' | Показатели продуктивности и качества яиц яичных кроссов кур в РУП 'Племптицезавод 'Белорусский'
2011
Makhnach, V.S. | Sviridova, S.N. | Dmitrieva, T.V., The Experimental Scientific Station of Poultry Breeding, Zaslavl (Belarus)
In course of the research there was studied the indices of egg productivity and quality of final hybrids of crossbreeds Belarus autosex, Belarus brown, Highsex white, Highsex brown. The research was realized in the conditions of the Republic of Belarus in the Republican unitary enterprise 'Tribal Poultry Plant 'Belorusskij' in 2009-2010. As a result of realized research there was revealed that egg-laying capacity of the best white domestic hybrid Belarus autosex made 263-285.5 eggs on an initial layer and 275.4-303.1 eggs - on an average layer. Egg-laying capacity of the import crossbreed Highsex white accordingly was equal 249.5-279.1 on an initial layer and 282.0-306.2 eggs - on an average layer. Egg-laying capacity of the brown crossbreeds was above and made: crossbreed Belarus brown – 305.9 eggs on initial and 316.1 eggs - on an average layer; crossbreed Highsex brown – 284.9 eggs on an initial layer and 327.6 eggs - on an average layer. Crossbreeds of hens of the Belarus selection were characterized by higher viability. Hybrids of crossbreeds Belarus brown and Highsex brown had chicken deaths indicator at level of 1.0-1.5%. The weight of eggs in 30 weeks at layers Belarus autosex made 56.48-58.37 g, at the age of 52 weeks – 60.5-62.34 g, at layers of crossbreed Highsex white the weight of eggs in 30 weeks was equal to 58.37 g, at the age of 52 weeks – 61.58 g. Crossbreeds of hens Belarus brown and Highsex brown had higher weight of eggs, accordingly the equal: at the age of 30 weeks – 59.28-60.0 g, at the age of 52 weeks – 62.2-62.1. Morphological research of eggs has shown that eggs of hens of crossbreed Belarus autosex had higher the absolute and percentage content of egg yolk in comparison with eggs of other crossbreeds.
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