Influence of nutrition to expose of genetic potency оf Holstein-Frisian dairy cows in conditions of North Macedonia
Keywords:
Holstein-Frisian cows, nutrition, genetic potency, production, chemical composition, milkAbstract
Research was carried out in order to establish the influence of nutrition to expose of genetic potency of the Holstein-Frisian cows. Two biggest farms in North Macedonia with the total number of 900 cows were analyzed. In 2017 year on the cattle farm MILKO HF from Prilep with capacity of 200 cows controlled 30 cows with average body weight 730.4 kg in different phases of lactation. The nutrition was compound with ration from fresh brewery by-product, lucerne hay, meadow hay and concentrate like a mixture. Production of milk in lactation period from 305 days is 7356.6 kg standard milk with average daily content of milk 24.12 kg with the following chemical composition of milk: average percent of milk fat is 3.86%; protein – 3.76%; lactose – 4.91% non-fat dry matter – 9.47% and total dry matter – 13.33%. In 2017 year on the cattle farm AD STOCARSTVO from Bogdanci with capacity of 700 cows controlled 30 cows with average body weight 552.3 kg in different phases of lactation. The nutrition was compound with ration from corn silage, lucerne hay, meadow hay, brewery by-product (dry), sugar beet by-product (dry) and concentrate like a mixture. Production of milk in lactation period from 305 days is 8997.5 kg standard milk with average daily content of milk 29.50 kg with the following chemical composition of milk: average percent of milk fat is 3.99%; protein – 3.11%; lactose – 4.04% non-fat dry matter – 8.39% and total dry matter – 12.38%. Getting results from the production of Holstein-Frisian cows in North Macedonia, at once to confirm her exception high production superiority for production of milk and they were adapted, acclimatized and accommodated in conditions of North Macedonia and farmers need to know the benefit her genetic and production potency solely through proper nutrition.
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