| Abstrakt: |
An important factor for increasing the productive performance of dairy cattle is the adequate and balanced diets due to improving the quality of feeds enriched with the combined additives made of alternative sources, in particular, with the use of abundant forest resources. The practical experiment to study the effects of dietary intake of conifer meal on milk production and metabolic parameters in cows and to determine its optimal dosage was carried out at LLC Plemzavod Taezhny breeding enterprise, Sukhobuzimsky district, Krasnoyarsk region. In order to perform the experimental analogue study, three groups of five milk cows each were formed. The experiment lasted for 100 days. The animals in the control, first, and second groups were fed with the basal diet, the basal diet supplied with the conifer meal at a dose of 50 g/head/day, and the basal diet supplied with conifer meal at a dose of 100 g/head/day, respectively. The data were analyzed and processed according to the common methods. A positive effect of the conifer meal on milk production and technological parameters of cow milk was proven. The analysis of the produced data allowed us to determine the most effective dose of conifer meal, which comprised 50 g/head/day. It contributed to increasing the milk yield for 100 days of lactation, the milk fat content, the milk protein content, and the amount of basic fat milk by 15.6, 29.8, 17.1, and 29.4%, respectively, improving the technological milk parameters. [ABSTRACT FROM AUTHOR] |
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