Milk productivity of daughters of red bulls taking into account housing techniques

Research was carried out in the stud farm for the breeding of cows of the Red Steppe Breed “Azovskoe” ZAO, located in the Azovo District of the Omsk Region. Groups were formed among coetaneous daughters of bulls of red breeds, which were kept following different housing techniques under identical nutrition conditions considered to be typical of this type of farm. Materials regarding the milk productivity (milk yield, fat content, protein content) of the daughters of red bulls of different breeds are presented. The maximal milk productivity of full-grown cows in case of tie-up housing amounted to 6,488.47 kg, in case of yard housing it amounted to 6,261.86 kg. In conversion to milk fats, during lactation an amount between 241.9 kg and 279.0 kg was obtained. The factual housing method is impactful and results in a significant increase in productivity only if this is made possible by a series of needed complementary factors. These include the aim of animal breeding, the available feed reserve, the available surface and the construction features of the used premises...