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0221U102262,
0116U002306
,
To estimate the fundamental principles of influence of different levels of amino acids and micro element chelates in the foods on the main features of agricultural animal productivity
Mikhalchenko Stepan A,
29-01-2021
Institute of animal science
The object of study - dairy cows, essential amino acids, chelated complexes of trace elements, protected protein. The purpose of the work is to determine the need and optimal levels of essential amino acids and negligent complexes of micronutrients in feed and to establish the effectiveness of their use in feeding high-yielding cows. The optimal doses of lysine in the range from 5 to 15% in the diets of cows with a productivity of 5-6 thousand kg of milk. This contributed to an increase in average daily milk yield by 1.7-2.3 kg or 8.9-12.0% with an increase in the conversion rate of protein to 30.5-31.2%. It is most economical to use a combination of 75% chelated and 25% salt forms of trace elements Copper, Manganese and Zinc to balance diets. The use of elevated levels of the essential amino acids methionine (by 14.2%) and lysine (by 24.3%) had a positive effect on milk productivity and milk quality, provided proper diet balancing. This allows to increase the hopes of natural milk by 11.1%, fat content in milk by 10.8%, protein - by 3.5%, biological conversion of protein into milk by 14.5%, and energy conversion - by 17.0% , reduce the cost of milk production. Feeding of the developed protein-mineral supplement increased the hopes of natural milk by 1.9-2.1 kg, fat content by 0.1%, milk base fat - by 2.8-3.2 kg, biological conversion of protein into milk by 7, 65-15.2%, and energy - by 10.54-15.61%. This allowed to receive an additional UAH 20.39-21.31. per head per day. A set of complete feeding rations for high-yielding cows was developed, which allowed to increase the level of protected protein in the first third of lactation by 6.87%, and in the second - by 5.83%. This helped to increase the average daily milk yield by 15.5% (4.22 liters) of natural milk per day, and by 21.2% (3.36 liters), respectively, and to increase the conversion of energy and protein rations into milk by 21.6-24, 6% and 20.9-22.4%.
Yeletska Larysa M
Vasilevsky Mykola V
Zolotarev Angriy P
Zolotaryova Svetlana A
Kosov Mykola O
Kravchenko Yuriy S
Petrenko Sergij V
Podobed Leonid I
Prusova Galina L
Rusko Natalia P
Saprykin Viacheslav O
Sedyuk Igor Ye
2021-01-29
Updated: 2025-12-07
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