DYNAMICS OF SOME FUNCTIONAL PARAMETERS OF THE UDDER IN DAIRY SHEEP AT FIRST LACTATION

J. Peeva, I. Dimitrov, M. Djorbineva

Abstract: The aim of the study was to determine the dynamics of some functional parameters of the udder during separate years in the sheep of the Bulgarian dairy synthetic population at their first lactation. In the study were included sheep reared in the Agricultural Institute, Stara Zagora as follows: 41 lactating in 1990, and 46 for each of the years 1995, 1998 and 2002. Ewes were split by the analogous method between the years on date of lambing in the interval of 20 days, and on the number of lambs born. The following functional characteristics were recorded: milk yield from basic milking (ml), milk from machine stripping milking (ml), milk from hand stripping (ml). The time for secretion of the different portions of milk were also recorded. The time functional characteristics were measured by a chronometer and the quantity of milk yield by an individual milk meter (Vimer 1). It was found that the ewes at their first lactation obtain proper functional characteristics for machine milking. The tendency for a decrease in the amount of the secondary milk yield (machine and hand) in the years led to a simplification of the milking technology. It is considered as a good proposition for elimination of the hand secondary milking and for facilitation and simplification of the technology and organization of the
machine milling.

Keywords: dairy sheep; functional parameters; udder

Date published: 2018-03-09