Protein and energy metabolism in kid goats of different genotypes in Armenia

Hybridization between local and imported animals is used in the Republic of Armenia to increase the milk productivity in goats. In submountain conditions of Armenia the author studied the age dynamics of biochemical tests in the blood of local and crossbred F 1 goats, obtained from crossing with imported alpine goats, during their early postnatal ontogenesis. The pronounced changes in studied parameters were detected as during transition kid goats from milky feeding period to supplementary crude and mixed feed, as during the period of physiological reformation of organism (pubescence). The differences between local animals and the F 1 become more apparent at the pubertal period. The activity of blood enzymes in local kid goats was higher in crossbred goats, which, in turn, have an advantage on protein metabolism. To one year age, the difference between local and crossbred animals was practically minimal.