Szukana fraza: [Opis = "The aim of the study was to determine whether PIT\-1\/HinfI, GHRH\/BsuRI, GH\/AluI, IGF\-1\/Eco105I gene polymorphism influances the value of milk traits. The analyzes were as follows\: mean daily yield, percentage of fat, protein, lactose, dry matter and urea content and number of somatic cells. The above characteristics were analyzed according to the following factors\: lactation order and maintenance system"]

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