APPROACH REGARDING SOME CONFORMATION AND MILK PRODUCTION TRAITS IN ROMANIAN SIMMENTAL CATTLE FORM HARGHITA AREA INCLUDED IN THE OFFICIAL CONTROLL

Abstract

Analysis of performance data regarding the conformation traits (withers height, body weight, thoracic perimeter), including the traits that concur to milk production (total milk production per normal lactation, fat percent, total fat amount from milk), in mothers-cattle of bulls, candidate mothers-cattle of bulls and active population of Romanian Spotted Simmental breed from Harghita region, allow us to ascertain the followings: The body weight of mothers-cattle of bulls, candidate mothers-cattle for bulls and also of those from the active population of Harghita region, prove the existence of a valuable genetic material with a high superiority of 30 kg of the mothers-cattle of bulls related the candidate mothers-cattle of bulls and of 50 kg related the active population; all of these emphasize the stringency of the selection performed. Analyzing the waistline of the three populations, it was possible to ascertain that the mothers-cattle of bulls values over class those of the candidate mothers-cattle of bulls and of the active population with 1 cm, respectively 4,1 cm. This difference indicates the researchers concern for raising the waistline in the Romanian Spotted Simmental breed from Harghita region. The thoracic perimeter values were adjacent those of the mothers-cattle of bulls and of the candidate mothers-cattle of bulls (200,00±3,70 cm respectively 199,30±1,24 cm and 185,70±0,61 cm in the active population). The values of circa 7000 kg milk realized in normal lactation of the mothers-cattle of bulls and candidate mothers-cattle of bulls, are showing a very good intensity of the selection, proved by the selection difference registered between the active population and the above two categories. These high milk productions registered for the mothers-cattle of bulls and candidate mothers-cattle of bulls are indicating a high productivity potential. The 250 kg of total milk fat achieved are showing a high potential of the Romanian Spotted Simmental breed as additive variation arrearage that can be used in selection for this trait. 233 The fat percent of milk registered in the three populations indicate their in-framing between the normal limits specific for the Romanian Spotted Simmental breed.

Keywords

• romanian spotted simmental breed
• increased production performances
• selection effect
• additive variation