Aspects Regarding Bull Cow Mothers and
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 cow mothers of bulls, candidate cow mothers of bulls and active population of Romanian Spotted Simmental breed from Harghita region, allow us to ascertain the followings: Analyzing the waist line trait in VMT we can conclude that it presents values between 140.40 cm and 142.00 cm, which are over welling the average value of Romanian spotted breed (136-138 cm Velea 2004). The thoracic perimeter as conformation and morphoproductive type indicator in the VMT effective has values between 199,4 cm and 208.4 cm. The cow mothers of bulls from Covasna county are in framed in the massive type for body weight, having average values between 509.40-762.60 cm. Analyzing total milk amount in VMT and CVMT from Covasna county, during the period 2004-2007, we claim that the average production in the Ist lactation in VMT is comprised between 6793 kg in 2005 and 7503.5 kg in 2004. This lactation presents easily higher values in CVMT, on the same generation. The performances differences from one generation to another one could be assigned to the realized effect of selection by using high value male reproducers, and also to the conditions of the growing technology. The same aspects are maintained for the IInd lactation, IIIrd lactation and over it.
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