2018, № 75UDC: 637.054:005.22
Study of the fat to protein ratio in the milk of highly productive Holstein cows in different phases of lactationData are cited that the decline of maintenance of fat in milk serves as the indicator of acidosis due to the too high content of difficult to digest fiber and lack of structural fiber in the diet. It is established that increase of fat content in milk more than by more than 4% at the beginning of lactation testifies to enhanceable mobilization of organism of animal to compensate the lack of energy that serves as the indicator of subclinical ketosis. The albumen content in milk below 3,0% testifies to the insufficient providing of animal with energy. Between albumen content in milk and fatness of animal there is a reverse interrelation. With the increase of albumen content in milk by more than 3,8%, milk production and live weight of the animal decreases. It is established that content of fat and albumen in milk of Holstein cows, possessing high genetic potential, is the indicator of their health. Insufficient balance of the diet contributes to metabolic disorders in animals in the form of ketosis, which in turn affects the loss of milk. On the basis of the milk analysis of the studied groups of animals values of the ratio of fat to protein were calculated, which indicate that after passing the peak of lactation indicators of animal health come back to normal. During this period, the number of animals at risk of ketosis and acidosis is approximately the same. The increased content of concentrated feed in the diet, under high yields, indicates that the diet does not adequately meet the needs of highly productive livestock. When selecting individual average milk samples and calculating the ratio of fat to protein, timely adjustment of diets is possible, allowing elimination of deficiencies in the balancing of diets.
Keywords: Holstein breed, milch cows are suckling fat, suckling albumen, feed ration, cellulose
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