Perfection of mineral and vitamin nutrition of pregnant high-productive cows in dry-stall period during winter feeding | Оптимизация минерально-витаминного питания стельных высокопродуктивных коров в сухостойный период при зимнем кормлении
2010
Sakhanchuk, A.I. | Kallaur, M.G. | Dedkovskij, V.A. | Buchenko, V.P. | Romanovich, Zh.V., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
In the conditions of the Republic of Belarus there was realized comparative evaluation of the efficiency of slightly increased content of phosphorus, calcium, sodium, copper, zinc, cobalt, iodine and vitamins A and D in comparison with the standards which were set in 1985 by the All-Union Academy of Agricultural Sciences named after V.I.Lenin (VASKHNIL) and in 2003 by the Russian Academy of Agricultural Sciences for dry pregnant cow in winter period, digestibility and intake of nutrients of pregnant high-productive cows, as well as their aftereffect on milk productivity in the following two months of lactation, biochemical blood indexes. As a result of administration of moderately increased levels of trace elements and vitamins, in particular phosphorous on 10,0% in comparison with 15% and standard level in the ratios, there was marked a slight decreasing of pregnancy period duration on 1,29 and 2,14 days. Also, there was increasing of corrected milk yield of 4% fat status on 3,15 and 0,85%; improvement of growth and development of calves in prophylactorium period on 3,93 b 4,52%, digestibility of organic matter - on 1,43% and 1,67%.
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