Refine search
Results 1-4 of 4
Динамика живой массы и массы осевого скелета цыплят-бройлеров кроссв Кобб-500 и Росс-308 в постнатальном онтогенезе
2009
Selmanovich, L.A., Vitebsk State Academy of Veterinary Medicine (Belarus)
Development of axial skeleton bones of meat type broiler chickens of Kobb-500 and Ross-308 crosses at the postnatal ontogenesis period was investigated in the conditions of the Republic of Belarus. In course of studies there were used broilers of 5 age groups (1 day old, 20 days old, 30 days old and 40 days old) which were selected in accordance with analogous principle with 10 heads per each group. Research results showed that live weight gain as well as axial skeleton weight gain of both crosses chickens increased wavily. The highest growth intensity of body weight and axial skeleton weight was stated at broiler chickens of Kobb-500 cross at the last age period. The opposite way, there was noted the increasing of axial skeleton growth for broiler chickens of Ross-308 cross at the age of 20 days. At the further age periods till the end of fattening-off there was stated the slowing of axial skeleton and body weight. In the period of 1 to 10 days there was stated an intensive growth of cervical spine of spinal column of broiler chickens of both crosses. High intensity of absolute weight growth of cervical spine of spinal column for Kobb-500 cross chickens was stated at the age period 30-40 days; for Ross-308 cross chickens - at the age 10-20 days
Show more [+] Less [-]Современные аспекты применения биологических стимуляторов на основе торфа
2009
Zayats, V.N. | Nadarinskaya, M.A. | Golushko, O.G. | Kvetkovskaya, A.V., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus) | Naumova, G.V. | Makarova, N.L., The National Academy of Sciences, Minsk (Belarus). Institute for Nature Management
Determination of the positive aspects of application of a feed additive on the basis of sodium humate and malt sprouts fortified with oaky extract in diets of high-productive cows in dry period was realized in the conditions of the Republic of Belarus. Cows of black-and-white breed with average body weight 600 kg and milk-yield 6000-7000 kg were used in the experiment. Cows of experimental groups in addition to their main diet were fed with the resolved additive in doses 10-20 ml/100kg of live weight. Formula of humic additive with draft name Ehkolin-3 was developed on the basis of Ehkolin additive. Ehkolin additive in its composition contained the following compounds: organic substances; mineral substances; humic substances; melanoids; reducing agents; phenolic compounds; organic acids, and total nitrogen. Research results showed that application of the analyzed additive promoted the increasing enzyme activity in blood serum. Body weight of new born calves in experimental groups was higher than in control group. Symptoms of diseases of the digestive tract disappeared in 4-5 days in the experimental calves. Cows of the experimental groups had good colostral milk with density 1056 kg/mE3 and 55% of immunoglobulins. Impregnation capacity of in one experimental group was 50% after the first insemination, and only 33,3% and 20% in the control and the second experimental group, respectively
Show more [+] Less [-]Рост и развитие молодняка крупного рогатого скота черно-пестрой породы
2009
Zayats, O.V. | Kovalevskaya, T.A. | Shajtanova, O.V., Vitebsk State Academy of Veterinary Medicine (Belarus)
In course of realized in the conditions of the Republic of Belarus evaluation of growing intensity and level of meat productivity depending on cattle sex there was conducted the scientific and economic experiment by an example of two groups of white-and-black bull-calves and heifer calves. In the first growing period the animals of experimental groups were fed with milk substitute. At the stage of completion of growing and fattening the bulls and heifers of experimental groups obtained ration containing haylage, plus 2 kg of flattened grains and 2 kg mixed fodders. Results of linear and weight indexes analysis showed that in changes of exterior of bulls and heifers of black-and-white breed there was noted a certain regularities in their growth and development. The most intensive growth and development of analyzed young cattle was stated at age from 6 till 12 months. At the same time, bulls exceeded heifers according to the main exterior indexes. According to the visual evaluation of bulls and heifers there were determined the differences in constitutional type
Show more [+] Less [-]Применение квантовой энергии для стимуляции иммунобиологической реактивности, роста и развития новорожденных телят
2009
Trofimov, A.F. | Timoshenko, V.N. | Muzyka, A.A. | Pechenova, M.A., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
It is established, that application of laser radiation of low intensity of infra-red area of a spectrum together with a constant magnetic field (an exposition 180 seconds) promotes correction of immunity of an organism of newborn calves that leads to increase in intensity of growth, and decrease in disease of young growth
Show more [+] Less [-]