Abstract
It is clear from the results of our research at the Livestock and Equestrian Training Center that at the age of 6 months, the live weight of zebu ? Simmental hybrids in males was 193.4 kg, while in females it was 171.5 kg. If these indicators are compared with the standard indicators of the Simmental genus, it could be seen that the heterosis in zebu ? Simmental hybrids was more than 20%. In the trisexual hybrids (zebu ? Simmental ? Holstein), the average live weight of males at the age of 6 months was 210.8 kg, and 187.6 kg of females. This means that the live mass indexes of the trisexual hybrids resulted in a heterosis force of 25% of the standard live mass index of the Simmental genus. Revealed the high biological and agricultural characteristics of trisexual hybrids are clearly felt to be superior to other hybrids and crossbreds, due to the period from birth, growth and development characteristics.
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