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The study was conducted during the years 2005-2007. The experimental materials comprised 48 Holstein-Friesian primiparous cows purchased from Germany. The objective of the study was to determine relationships between the genetic variants of selected milk proteins and the yield and composition of milk produced over the first 305-day lactation and full lactation, and the reproductive traits of cows...
The aim of the study was to determine the performance of four Polish breeds of goats and to evaluate the impact of αs1 -casein genetic variants on milk, fat, protein yields and casein content. The investigations included a total of 598 goats of four breeds, i.e. white improved, colour improved, white non-improved and colour non-improved. Goat productivity was established in relation to milk yield,...
Genetyczne warianty białek mleka oznaczano u 129 krów pierwiastek, wycielonych w okresie jednego roku w stadzie utrzymywanym systemem alkierzowym. Próby mleka do badań pobierano ok. 20., 120. i 210. dnia laktacji. Oznaczano 22 wskaźniki określające wydajność mleczną, zawartość wybranych składników chemicznych oraz niektóre wskaźniki charakteryzujące przydatność technologiczną mleka. Metodą elektroforezy...
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