PRODUCTIVITY CHARACTERISTICS OF EWES BY SYNTHETIC POPULATION BULGARIAN MILK

Margarit Iliev

Abstract: In order to productivity characteristic in sheep by Synthetic population Bulgarian dairy herd at the Institute of Agriculture - Karnobat study was done on animals born in the period 2001-2005. 358 animals were controlled. According to the origin of the animals were divided into three groups: with blood of the East-Friesian breed to 20%; from 20.1 until 50% and above 50 %. The traits milk yild for lactation period, lactation length in days, wool productivity of 2.5 and 3.5 years, wool yield and clean wool of 2.5 and 3.5 years were studied. It was found that milk production and duration of lactation in ewes with blood of the East-Friesian breed over 20% are shown higher than that those of sheep with blood of the East-Friesian breed below 20%. Animals with blood of the East-Friesian breed of over 20% of milk yield more than 210 l, with the first and second lactation and their represent is 67% and 64% of the total number of ewes, that is good base for selection. Study of the sheep herd wool productivity meet the specifications of the breed, but is not found significant differences between groups of animals (other than blood of the East-Friesian breed).

Keywords: groups with blood of East-Friesian breed; lactation length in days; milk production; Synthetic population milk ewes; wool productivity

Date published: 2023-03-01