Comparative characteristics of reproductive qualities of dogs of service breeds

Presents the results of the study of the influence of genetic and paratypical factors on the reproductive performance of dogs of service breeds German, Belgian (raspberry) and Eastern European shepherd. The study revealed some interbreed differences in the manifestation of reproductive qualities in the considered groups of dogs. Minimal duration of pregnancy and multiple pregnancies are characterized by a large dog breed Belgian shepherd (Malinois). Dogs of this breed also show a high maternal quality and 100% safety of the litter in high fertility 9.4 puppy in the litter. Revealed a significant difference in large litter depending on breed affiliation: the smallest live weight of puppies at birth was in the bitches of the Belgian shepherd. The dependence of the gender distribution of puppies in the litter on the season of puppies, as well as a decrease in the safety of puppies by 6.3% in the summer-autumn period of puppies. The established state of variability of the average mass of puppies at birth suggests the possibility of breeding on this basis among the studied breeds of dogs.