In article the economic and biological assessment of cultivation of a red steppe cow in conditions texnogeneza is given.
Cattle breeding in conditions texnogeneza
Native Red steppe breed of cattle – is a genetic reserve of immunity to adverse conditions of the environment.
Today sharply there is a question of ensuring ecological safety of cattle-breeding production for dietary and baby food, especially in residential suburbs of industrial centers. And to go in for animal husbandry where the farm is located in close proximity to consumers and the processing enterprises, most favourably. But in such places the risk of pollution of production various toksikant is high.
It is known that the dairy efficiency of cattle is higher, the meat is lower. It is caused by unequal course of physiological processes in an organism of animals, type of their constitution, features of an exchange. Cows of different breeds under equal conditions of feeding and the contents differ on efficiency and composition of milk.
Scientists-selectors already determined consistent pattern of distinctions in indicators of a power exchange at different breeds of cattle. It is noted, a narpimer, high ability of Red steppe breed to adapt for various climatic conditions that is connected with need of preservation of an osmotic homeostasis. This breed native therefore it limited evaporation from a surface of skin and respiratory ways at some temperature increase of a body. Such thermoregulation is promoted also by a color.
Adaptedness of cows of this breed to climate of the semi-desert is especially appreciable during the pasturable period. At a pasture they eat the big range of herbs that allows them to do without green top dressing, thus in their milk more optimum ratio of mineral substances, protein and fat is formed. Milk of cows of Red steppe breed carry to the first group of heat stability that is a necessary condition for its processing. This indicator at it is higher, than at black and motley cattle.
The raised contents in diets of cows of iron (3 maximum concentration limits) and nickel (4 maximum concentration limits) in different stepenivliyaet on their localization in production depending on their pedigree accessory. More susceptible there were cows and bull-calves of black and motley and red and motley breeds, and steadier – Red steppe, the content of metals in their production was the smallest.
The face of bull-calves carried out at the end of the stall period showed that on a chemical composition, technological properties of meat and results of its organoleptic assessment production received from Red steppe breed has the best indicators, in it the smallest content of the metals exceeding maximum concentration limit (nickel and iron) is noted.
The economic and biological assessment in the carried-out experiences showed that in the conditions of technogenic loading Red steppe breed surpasses black and motley and red and motley in natural resistance, reproductive ability, quantity of lactations, quality of milk and dairy products, but concedes on nadoyu. Red steppe animals appeared steadier against influence of heavy metals therefore from the ecological and technological points of view these animals are more suitable for production of milk and meat in the conditions of technogenic loading.
On magazine materials Animal husbandry of Russia.