COWS MILK PROTEIN CONSTITUTE VARYING IN LACTATION DAYS
Diana Ruska, Daina Jonkus
Pages: 127-134
Publié: 1 Jan 2013
Vues: 629
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Résumé: Cow’s milk is a complex fluid consisting of a lot number of components. The objective of this study was to evaluate a relation between milk urea and milk yield as well as milk constituents in different lactation phase. Milk yield and content of total protein, casein, urea was collected from the herd control data from September 2009 to November 2010. Milk content parameters for total 2740 milk samples were analysed in accredited milk quality laboratory. The statistical analyses were performed with the SPSS program package. Based on General linear model data it was establish that an influence from lactation day on variability of urea, protein, casein yield and milk yield was statistical believable (p<0.001). The highest milk yield was 30.7 kg in 30-59 lactation days and 30.6 mg dL-1 of urea level per control day in 200-299 lactation days. Highest protein and casein contents were 3.91% and 2.99% in over 300 lactation days.
Mots-clés : dairy cow, milk yield, protein, casein and urea yield
Citer cet article : Diana Ruska, Daina Jonkus. COWS MILK PROTEIN CONSTITUTE VARYING IN LACTATION DAYS. Journal of International Scientific Publications: Agriculture & Food 1, 127-134 (2013). https://www.scientific-publications.net/en/article/1002908/
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