Current state and prospects of development of the Ayrshire breed of the Vologda region

Abstract

The article presents the dynamics of livestock and productive performance of populations of cattle of dairy breeds of the North-West zone of the Russian Federation, including the Vologda region. Set to reduce the number of cows in the increase of their efficiency in almost all regions. Revealed the superiority of the productive performance of cows of the Ayrshire breed on the average values of dairy cattle breeding farms of the Vologda oblast for the year 2016. With the aim of increasing the efficiency of the modern generation breeding of Ayrshire cattle in Vologda region is developed by the control system selection process, aimed at improving the productive and exterior traits of animals, including analysis of the breeding situation, the definition of evidence-based options selection and selection (figure 1). Cows of the 1st calving (100 days of lactation) with the value of the polyfactorial index (model СI₇) ≥ 172. Selection of bulls-producers to carry out taking into account the coefficient of linearity from 37.5 to 62.5%., by belonging to the prospective genealogical lines and branches of the Ayrshire breed with a selective differential Sd ≥ 113 kg. Selection of parental pairs is carried out on the basis of the best combinations of the linearity of the mother and mother of the father of the Ayrshire breed with Sd > + 158 kg of mil. For cows with a milk yield of up to 9000 kg of milk, to fasten the bulls to the milk yield of mothers 8000-9000 kg of milk, on cows with a productivity of 9000 kg of milk - Bulls, with milking of mothers> 10000 kg.