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Changes in cow’s milk composition and physical properties during the uninterrupted milking process. The chemical composition of milk determines the nutritional value and technological properties of milk and dairy products. Many studies have been performed on the chemical composition of milk, including fatty acid and protein profile, however a limited number of investigations have determined the changes...
The research was carried out on 38 Kołuda ewes. Two trial milkings were done in June 2013 – the first in the 9th week of lactation, in the final suckling period, and the second in the 11th week of lactation, 14 days after weaning of lambs was complete. Thirty-eight ewes were chosen and randomly assigned to two groups, each consisting of 6 ewes rearing single lambs, 10 with twins and 3 with triplets...
The population of Polish Red (PR) cattle systematically decreases because of its low milk production. However, there are farmers, who are interested in keeping PR cows in the suckling system. The aim of the study was to evaluate different forms of milk and beef production (combination of factors e.g.fattening bulls, heifers raising, milk or beef production) characterizing farm production from the...
Due to the functions that estrogens play in the regulation of reproduction, development of mammary gland, growth and differentiation of cells, estrogen receptors and their genes are considered candidates for molecular markers of production and functional traits in farm animals. In this study,using the SSCP and DNA sequencing, we found a novel single nucleotide polymorphism (SNP) in the coding region...
Attending animals of only one sex, depending on the chosen type of production, would considerably increase its effectivity. The problem of sex determination is an element of crucial importance in biotechniques of unconventional reproduction. In the case of cattle it gained importance with the development of breeding programmes based on multiple ovulation and embryo transfer (MOET). The control of...
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