Economically useful features of Obroshyne geese with white plumage

Abstract

Goal. To study the dynamics of weight and linear growth, egg production, incubation qualities, and physical characteristics of goose eggs of the newly formed Obroshyne white breed group of geese. Methods. Zootechnical, physiological, biochemical, statistical, purebred linear breeding. Control over the growth and development of young animals was carried out until 21 weeks of age. Live weight of geese of both sexes was determined by weighing at daily, 4-, 9-, 12- and 21-weeks of age on SF400 scales with an accuracy of 0.01 g. The exterior of young geese in the above age periods was studied by measuring chest circumference, torso length, keel, shin and mold, as well as indices of the structure of the bird’s body according to conventional methods. They determined the total mass of feather raw materials and the mass fraction of individual components — down and feather (mature, immature), clogging. Incubation qualities of eggs were determined by their fertilization, the number of deaths and hatching of goslings. Physical parameters of eggs (30 pcs.) were evaluated by their weight, length, width, shape index, strength and thickness of the shell according to conventional methods. The obtained research results were statistically processed according to the G. Lakin method (1990) using Microsoft Excel software. Results. The dynamics of weight and linear growth, egg-laying, incubation qualities and physical parameters of goose eggs of the newly formed Obroshyne white breed group of geese were studied. Indicators of productivity of Obroshine white geese of the OB4 line (I group) made: laying — 39,5 pieces for a head; egg weight — 154.1 g; fertility — 84.6%; hatching — 71.9%; the live weight of geese at 9 weeks of age: males — 4380 g, females — 3810 g, survival — 91.8%. Obroshyne white geese of the OB6 line (group II) were characterized by correspondingly higher productivity indicators: laying — by 1.7%, fertilization — by 0.9, hatching of goslings — by 4.4, live weight of geese at 9 weeks of age: males — by 11.10, females by 2.88, survival — by 2.0% with a higher egg weight by 4.3%. Conclusions. Ontogenetic regularities of geese growth were studied: live weight, body measurements of geese of different sexes, as well as egg-laying, incubation qualities and physical parameters of eggs of geese of Obroshyne white breed group of geese. It was found that all birds were well adapted to the natural conditions of the Western region, as well as selected for productive grounds, they had higher rates of fattening and reproductive capacity by 8–11%.