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Оптимизация минерально-витаминного питания стельных высокопродуктивных коров в сухостойный период при летнем кормлении
2010
Sakhanchuk, A.I. | Kallaur, M.G. | Nevar, A.A. | Dargel, T.B. | Burakevich, T.A., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
In the conditions of the Republic of Belarus there was realized a comparative estimation of efficiency of the increased level of phosphorus, calcium, copper, zinc, cobalt, iodine and vitamins A and D in comparison with regulations of the All-Union Academy of Agricultural Sciences of the Soviet Union (1985) and the Russian Academy of Agricultural Sciences (2003) for pregnant cows in a dry period at summer feeding. Also, there was studied the digestibility of nutritive substances of forages in cow diets, as well as the evaluation of their after-effect on revelation of dairy productivity indexes in the subsequent two months of lactation, biochemical blood indexes and payment of forage byproducts. As a result of application of moderately increasing levels of macro- and trace elements, vitamin D, and phosphorus in particular on 10,0% in comparison with 15,0% and existing level in rations of pregnant cows there was stated a slight decreasing of pregnancy duration of animals on 0,10 day. Also, there was marked an increasing of milk yield of milk with 4% fat content on 1,64% and 4,48%, the growth and development of calves in the prophylactic period on 4,18 and 4,61%,; and the was an improvement of organic substance digestibility on 1,52 and 1,78%. Besides, there was revealed more moderate number of leukocytes and content of crude protein.
Показать больше [+] Меньше [-]Влияние различных уровней глюкозинолатов на продуктивные качества кур
2010
Suchkova, I.V., Vitebsk State Academy of Veterinary Medicine (Belarus)
In the conditions of the Republic of Belarus there were studied the influence of different levels of glucosinolates of rape (Brassica napus) seeds on metabolic processes and productive qualities of lying hens for the determination of an optimal dose of administration into their diets of ground rape seeds of the national Belarusian selection in spite of extraction cakes of other crops. Research results showed that addition into mixed fodder of 8-13% of rape seeds increase in their share in a lying hen diets caused the decreasing of the basic zootechnical indexes and did not render essential influence on production quality. However, introduction 6% rapeseeds into diets of lying hens of commercial stock instead of oil-seed meal of other crops did not render essential negative influence on productive indexes and production quality. Feeding of 6% of rapeseeds in spite of oil-seed meal of other crops in course of ten months of technological use of poultry caused the increasing of total yield of eggs on 2,9%, egg production - on 1,8%, average weight of eggs - on 1,7%. Also, it made it possible to reduce the daily consumption of forage on 2,6%, forage expenditures per 10 eggs - on 5,5% and per kilogram of egg weight - on 5,8%. The obtained results assume the possibility of inclusion into lying hens diets of 6% milled rapeseeds of national selection with a level of glucosinolates up to 44,7 mkmol/g.
Показать больше [+] Меньше [-]Химические консерванты серии кормоплюс при заготовке злакового силоса
2010
Tsaj, V.P. | Akulich, V.I., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
In the conditions of the Republic of Belarus there was studied the efficiency of application of forage chemical preservatives Kormoplyus-1, Kormoplyus-2, and Kormoplyus-3 for grass fodder conservation. The analyzed preservatives contained acetous acid, urotropine and sodium acetate (only in Kormoplus-2). In course of the study there were established experimental batches with the studied sreservative; there was determined a chemical composition of prepared forages; in physiological and scientifical and economic experiment there was analyzed the feeding efficiency of cereal ensilage. Research results showed that application of preservatives Kormoplyus-1 and Kormoplyus-2 2 for preparation of cereal ensilage made it possible to receive a high quality ensilage and to increase the dry matter safety on 4,2-8,7% and protein on 12-9,4% on comparison with storage without preservatives. Also, it made it possible to increase the digestibility of dry matter in cattle diets respectively on 5.5% and3.7%; organic substance - on 5.5% and 4.0%; fibre - on 16,5% and 15,0%, and also to increase nitrogen deposition on 17,4 and 20,8%. Feeding with forages preserved with Kormoplyus-1 and 2 did not render negative influence on a health state and biochemical indices of animal blood.
Показать больше [+] Меньше [-]Оценка эффективности хелатных форм микроэлементов как фактора улучшения производственных показателей у супоросных свиноматок и их потомства
2009
Kovalyonok, Yu.K. | Nikolaenko, S.A., Vitebsk State Academy of Veterinary Medicine (Belarus)
Evaluation of efficiency of chelate forms of trace elements in rations of pregnant sows as a factor of improvement of their production indices and quality of obtained litter. It was determined that introduction into pregnant sows rations of chelate forms of zinc and iron starting from the 84th day of pregnancy and till farrowing led to authentic increasing of milk yield, weight of a litter at birth and at weaning periods, to increasing of live weight of obtained litter, and also proved to be a form of hypothrophics prevention in piglets.
Показать больше [+] Меньше [-]Оптимизация энергопротеинового отношения в рационах высокопродуктивных коров в период раздоя
2009
Goryachev, I.I., Vitebsk State Academy of Veterinary Medicine (Belarus)
The recipe of mixed fodder is developed for cows with a 6-8 thousand kg yield of milk for a lactation during the period yield of milk, different the raised maintenance of a crude protein (18%) that allows to increase a yield of milk of animals by 6,6% (22,5 kg instead of 21,1 kg of 4% milk a day) to reduce the expense of forages on production unit to 6,4% (0,73 fodder units against 0,78 fodder units per 1 kg of milk). At the expense of additional production economic benefit makes 104,4 thousand rbl. counting on 1 head
Показать больше [+] Меньше [-]Физиологическое состояние и продуктивность бычков в зависимости от качественного состава протеина в рационе
2009
Kovalevskaya, Yu.Yu. | Gurin, V.K. | Kot, A.N. | Kozinets, A.I. | Shorets, R.D., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
It is determined that diets with protein digestibility of 61-66% in organism of a calve activate fermentative processes in rumen, increase digestibility of nutrients at 3,8-10,1% that allows to obtain the average weigh gains of 1036-1075 g, that is at 4,2-8,1% higher than that of control group at forage spends of 6,79-7,04 forage units
Показать больше [+] Меньше [-]Молочная продуктивность, распределение и использование энергии первотелками в период раздоя
2009
Kurepin, A.A., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
Results of the scientifically-economic experience lead in farm Zarechje (Smolevichskij district of the Minsk area) have shown, that perfect metabolizable energy concentration in dry matter of a diet at milking period for first-calve cows is 11,7 MJ/kg. It allows to increase natural milk productivity at 8,24% (27,4 against 25,4 kg) and 4%-milk outcome – at 8,93% as well as effective usage of metabolizable energy for production up to 4,9% (P less than 0,01) and minimum of production warmth loses
Показать больше [+] Меньше [-]Эффективность скармливания жмыха и шрота из рапса нового сорта Явар в рационах телят
2009
Sapsaleva, T.L. | Radchikova, G.N. | Pilyuk, S.N., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
Rape-cake containing 1,4-1,9% of glycozinolates and 27-30 mMol of erucic acid per 1 kg of dry matter may be implemented in mixed feed KP-1 for calves in amounts of 15% on mass. Feeding animals with mixed feeds KP-1 with rape-cake allows to get the average daily weight gains of 848-865 g at forage spends of 2,49-2,52 forage units per 1 kg of weight gain
Показать больше [+] Меньше [-]Эффективность применения заменителей цельного молока при выращивании телят
2009
Sakhanchuk, A.I. | Kallaur, M.G. | Kirikovich, S.A. | Dargel, T.B. | Kurepin, A.A., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
As a result of the conducted researches it was determined that replacement of milk in diets for suckling calves with whole milk substitute Komnilakt-50/2101 allows to significantly reduce the price and increase profitability of pedigree heifers growing that corresponds demands of the standard of classification for young cattle of 3 months of age on live weight of 90-105 kg at planned live weight of cows of 500-600 kg
Показать больше [+] Меньше [-]Естественные защитные силы гусей при включении в рацион коэнзима В12 в весенне-летний период
2009
Skobelev, V.V., Vitebsk State Academy of Veterinary Medicine (Belarus)
In given article natural resistance of geese during the spring-and-summer period is considered at inclusion in a diet coenzyme B12. Namely, dynamics bactericidal, lysozyme activity of blood of geese, dynamics of phagocytosis activity, the general fiber in blood whey, dynamics of fiber gamma-globuline fraction and reliability of distinction between groups is resulted
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