As a result of the studies, it was found that from birth to 6 months of age calves reared in individual hutches up to 60 days of age grew more intensively compared to reared up to 30 and 45 days of age. Their live weight was by 3.3% (P<0.05) higher compared to their herd mates’ kept in hutches up to 30 days of age; the average daily increase in live weight was by 4.0% (P<0.05) higher, and the relative growth rate – by 3.0 p. p. in young animals kept in individual hutches up to 45 days of age, by 1.6%, 2.7% 2.0 p. p, respectively. The safety of calves in all experimental groups was 100%.
As a result of the conducted research, it was found that the technological equipment for primary milk processing significantly affected physical and chemical parameters of milk. Namely, in terms of somatic cells, higher-quality milk was obtained from a group of cows at MTF “Unibox”, where a pre-cooler and the second stage of milk purification were used, and in cows at MTF “Westphalia” this indicator was approaching the maximum permissible value for the "extra" variety (300 thousand/cm3). The indicator of bacterial contamination of milk at MTF “Unibox” was 9.4% lower compared to MTF “Westphalia”, due to the use of a fine milk filter.
The article presents the results of research aimed at studying the effect of technological equipment for the production and primary processing of milk on its physical and chemical parameters. In terms of bacterial contamination, better milk was obtained from a group of cows at Сommercial dairy farm (CDF) No. 7, where fine filter was used. The milk corresponded to the “Extra” grade. When cows were milked in the milking parlor at CDF No. 7, this indicator was 11.0 thousand CFU/cm3 lower (at P<0.05) compared to CDF No. 5. As a result, 74.5% of milk produced at CDF No. 5 and 84.1% of milk produced at CDF No. 7 was sold as the “Extra” grade.
Introduction into the daily milking procedure of the hygienic product “ItalmasVP - I 2500”, based on an iodine-polymer complex, which has a disinfecting and regenerating-healing effect for the treatment of the udder teats after milking,allows to reduce the level of bacterial contamination of the udder and improve the quality of milk by reducing bacterial contamination of milk and decreasing the number of somatic cells. “ItalmasVP - I 2500” has a high prophylactic efficacy for the incidence of mastitis in cows and ensures a longer hygienic protection of the cow’s udder teats.
The use of “protected” fats in feeding cows provides the animals with the necessary amount of energy. One of the most guaranteed sources of energy in diets and feed mixtures of cows are rapeseed products. The article presents research materials, the purpose of which was to establish the effect of a complex energy feed based on dry protected fat as part of rations for dairy cows during the period of increasing the milk yield on milk productivity and hematological parameters. Studies showed that the inclusion of energy feed based on dry protected fat in the diet of experimental animals in the amount of 3% by weight of the compound feed contributed to an increase in milk productivity by 8.1% and had a positive effect on hematological parameters.
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