Authors:
S. Yu. KHARLAP, lecturer,
O. G. LORETS, doctor of biological sciences, professor,
O. V. GORELIK, doctor of agricultural sciences, professor,
URAL STATE AGRARIAN UNIVERSITY (42 K. Liebknechta Str., 620075, Ekaterinburg)
Abstract. In the conditions of industrial production egg crosses with the high genetically caused productivity and big term of productive use are used. Rearing young chickens for such poultry farms has great practical value. The starting period in development of young growth is fundamental in further productivity of laying hens both of parental and productive flocks and it is often underestimated in practice. It is established that the indicator of live weight at young growth at 5 weeks age has highly reliable interrelation with the subsequent productivity of laying hens, stability of egg-laying, safety of livestock. The results of researches on indicators of growth provided in the table allow to say that self-produced four-linear chickens for repair of industrial flock grew better and more intensively. On the 40th day they had live weight higher by 85 g, or 19,4 % than their peers, the two-linear chickens from Germany subjected to the transport stress in the first days of life. At the rate of efficiency of rearing young chicks it is established that the cost of one chicken at the age of the beginning of egg-laying constitutes at two-linear hybrids 4426,82 rub., and at four-linear – 151,68 rub., or 29 times more. It is because of the cost of the 1-day old chickens delivered from Germany and because of their low safety due to the impact of transport stress in the first days of life which is imposed on process of adaptation of a chicken in the environment. Thus, the conclusion is that transition to the domestic reproduction of parent flock of laying hens is necessary.
Keywords: flock, herd, industrial, hybrid bird, cross, gain efficiency.
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