Chemical composition and energy value of milk of imported and home-bred Montbéliarde cows
Journal Title: Journal of Animal Science, Biology and Bioeconomy - Year 2017, Vol 35, Issue 1
Abstract
The aim of the study was to analyse the influence of selected factors on the level of milk performance traits of imported and home-bred Montbéliarde cows. The data being the basis for the scientific description consisted of 13,788 records of test-day milking, and milk yield and chemical composition in 1,178 lactations. Yield per lactation was analysed according to the origin of the cows, distinguishing two groups, i.e. imported (brought from France as heifers in their 7th–8th month of pregnancy) and home-bred (born and reared in Poland), however, the averages for milk production traits in milking trials were analysed taking into account the origin of cows, and age during the first calving, calving season and subsequent lactation. It was found that the content of fat and lactose in milk decreased with the subsequent lactation. In home-bred cows also protein content and fat/protein ratio declined in subsequent lactations. Imported Montbéliarde cows ex-ceeded the home-bred in fat and dry matter content in milk in all age ranges during the first calv-ing. Moreover, they produced milk with higher protein content but it concerned only those whose first calvings were dated no later than 1,038 days old. Milk of imported cows (regardless of the level of analysed factors) characterized by a higher energy value than milk of home-bred cows.
Authors and Affiliations
Ewa Januś, Piotr Stanek
Keywords
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- EP ID EP200841
- DOI 10.24326/jasbb.2017.1.4
- Views 93
- Downloads 0
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