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Influence of lactation stage on selected blood parameters and biological value of cow milk during pasture season in organic system of production. The disproportion between the cow's genetically determined ability to produce milk and the limits to improving the energy value of feed may be the cause of the metabolic stress of animals kept at organic farms. Negative energy balance has a major impact...
Skład mleka zależy głównie od sposobu żywienia i utrzymania zwierząt, odmiennego w systemie ekologicznym i konwencjonalnym. Mleko ekologiczne zawiera więcej korzystnych białek niż mleko konwencjonalne, takich jak: α-laktoalbumina, β-laktoglobulina i laktoferyna. Mleko od krów wypasanych lub karmionych świeżą paszą, bogatą w różne gatunkowo rośliny, ma znacznie wyższy stosunek nienasyconych (PUFA)...
The aim of this study was to determine genetic effect of cow breed and feeding season on content of bioactive whey protein of cow's milk. In the selected biodynamic dairy farm, cows of two different breeds, i.e. Brown Swiss (BS) and Holstein-Friesian black and white (HF) were kept under the same environment conditions. The samples of milk were collected twice (in summer and winter) from 30 cows (in...
Myocyte enhancer factor 2D (MEF2D), a product of the MEF2D gene, belongs to the myocyte enhancer factor 2 (MEF2) protein family which is involved in vertebrate skeletal muscle development and differentiation during myogenesis. The aim of the present study was to search for polymorphisms in the bovine MEF2D gene and to analyze their effect on MEF2D mRNA and on protein expression levels in the longissimus dorsi...
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