DIFFERENT COLOR DIMINUTIVE PIGS' GAIN IN SUCKING AND AFTER WEAN PERIODS

The aim of the present research is associated with designing the methods to identify the animals with high resistance to after wean stress. In the research diminutive pigs were used which were produced in the Institute of Cytology and Genetics under Siberian Division of Russian Academy of Sciences. The relationship of piglets color to their daily weight gain was examined in a sucking period and over the first month after weaning. The relationship was revealed between the color and piglets’ resistance to the stress caused by their weaning from the mother. In the sucking period, the advantage was owned by the piglets of wild type color - agouti: their average daily gain truly exceeded the average daily gain of those from both the group integrated with the piglets of black and black-and-white color and that of white colored piglets. In the after wean period, ranks change: maximal average daily live weight gain belongs to the white colored animals, the agouti animals show live weight decreased; the black and black-and-white animals occupy an intermediary position. Thus, out of the three phenotypes examined for color, it was the white color piglets which could not only compensate the after wean live weight loss, but also begin to gain the weight further. In conclusion, it may be suggested that there exist the genes which provide resistance to psychoemotional stress and are related to the genes responsible for color.

миниатюрные свиньи, стрессируемость, стрессоустойчивость, послеотъёмный стресс, стресс на отсадку, стресс и окраска, diminutive pigs, susceptibility to stress, stress resistance, after wean stress, placing apart stress, stress and coloring

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