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Использование антигена из личинок Hypoderma bovis для диагностики гиподерматоза крупного рогатого скота методом ИФА
2009
Stepanova, E.A. | Yakubovskij, M.V. | Trus, I.A. | Myastsova, T.Ya. | Stepanov, S.N., National Academy of Sciences. Scientific and Practical Center of Animal Breding (Belarus). The S.N. Vyshelesskij Inst. of Experimental Veterinary Medicine
Data on development of an antigen on the basis of larvae of warble flies grubs (Hypodenna bovis) for diagnostic of spontaneous cattle hypodermosis by means of the indirect fluorescent (IFA) test and with application of blood serum and milk samples realized in the conditions of the Republic of Belarus were presented. Specificity and sensitivity of experimental sample of antigen for revealing of spontaneously infestated with larvae of warble flies with IFA test at hypodermotosis has made about 100%.
Show more [+] Less [-]Изучение особенностей продуктивных и воспроизводительных качеств коров дойного стада черно-пестрой породы в условиях ЗАО Липовцы
2009
Kovalevskaya, T.Ya. | Zayats, O.V. | Kurtina, V.N., Vitebsk State Academy of Veterinary Medicine (Belarus)
Investigation of peculiar features of productive and reproductive qualities (milk producing ability; reproductive qualities; live weight at different ages) of milking cows of white-and-black breed was realized in the conditions of CJSC Lipovtsy of Vitebsk region of the Republic of Belarus. On the basis of obtained results there was calculated the selective differential of milk yield and butter-fat yielding capacity which were increased by means of maternal and father's cattle; genetic progress through selection in reliance on generation and target standard for the analyzed herd, as well as the minimal requirements to first-calf heifer productivity.Research results showed that average milk yield in the analyzed herd was 5204 kg with average butterfat percentage 3,59%; for first-calf heifers – 4838 kg with butter-fat yield of 3,47%. Productivity of first-calf heifers and cows was higher than the standard valuation requirements to milk yield on 1350-1588 kg
Show more [+] Less [-]Роль физиологически активных гуминовых веществ в минеральном обмене при коррекции оксидативного стресса
2009
Kvetkovskaya, A.V. | Golushko, O.G. | Nadarinskaya, M.A. | Zayats, V.N., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus) | Naumova, G.V., The National Academy of Sciences, Minsk (Belarus). Institute for Nature Management
The given research results of feeding highly productive cows with new forage supplement of humic-melanoidine nature during the milking period show stable mineral metabolism, correction of their redundant supply within the diet, perfection of digestion and transition into milk as well as minimizing consequences of metabolism intensification. Reception new forage supplement promoted improvement of mastering by an animals organism of necessary iron during the given physiological period, to restriction of mastering of the microelements equal to the category of heavy metals
Show more [+] Less [-]Влияние некоторых факторов на рост молочной продуктивности коров
2009
Bekish, R.V. | Bekish, E.I. | Ostrovets, L.M., Vitebsk State Academy of Veterinary Medicine (Belarus)
Factors which increased milk productivity (age and continuance of service period) were studied in the conditions of an educational establishment of the Republic of Belarus by an example of cows of black-and-white breed. Dynamics of growth of milk productivity in course of 8 research years was presented. Analysis of interrelation between cow productivity and cow age was given. Mathematical calculation of relations between cow productivity indexes (milk yield, fat content, butter fat) and service period duration was given. Research results showed that increasing of an average term of economic use of cows and decreasing of duration of service period up to 90 days made it possible to increase dairy effiiemcy and herd reproduction, as well as obtain higher economic efficiency
Show more [+] Less [-]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
Show more [+] Less [-]Особенности миграции токсикантов в трофической цепи лактирующих коров
2009
Rukol, S.A., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
Solution for ecological purity of livestock products that is presented in our research is monitoring of the polluted by heavy metals and radionuclide areas exploration on the aspect of antioxidants content in soils, forages, livestock products and determination of ratio of toxic matters transition into milk
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