CROSSING OF THE SIMMENTAL CATTLE WITH THE CHAROLAIS AND CHIANINA BREEDS. PART II. MILCH COW PRODUCTIVITY
Abstract
The lifelong productivity cows of the crossbreeding of Simmenta l females and Charolais and Chianina bulls are studied. It is set, that crossbreeding of Simmental and Charolais breeds do not brings to the increase of the productivity of cows. Cross animals have a decline of calf weaning weight and safety, and on the products got for period of exploitation, they for certain do not differ from pure Simmental breed. The results of th e Simmental and Chianina breeds cross are the substantial decline of the cow’s productivity. This cross variant worsens of first calving age on 4 months, reduces calf weaning weight and safety and lifelong of cows, increases a between calving period, amount of abortions and stillborn calf. Lifelong calf weaning weight of
Simmental-Chianina cross cows there is less than for Simmental cows in 1.8.
References
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Meyer K. Estimates of genetic parameters for mature weight of Australian beef cows and its relationship to early growth and skeletal measures / K. Meyer // Livestock Production Science. – 1995. – Vol. 44, Is. 2. – P. 125-137.
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