INDICATORS OF MORPHOFUNCTIONAL STATUS OF NEWBORN CALVES DEPENDING ON COW-MOTHERS AGE

Abstract

The research aims to increase the morphofunctional status of newborn calves. The work was carried out in JSC «Niva» Stavropol region of the Samara region. From the number of Holstein heifers black-and-white breed was formed a group of animals in the amount of 40 heads. In newborn calves by animals of this group after the first, sec-ond and third calving, morphological and functional parameters were determined according to the following criteria: the state of skin; the time of standing posture; number of incisive teeth; sucking reflex and number of leukocytes and erythrocytes; distance from the tip of the tail to the Tuber calcanei; the length of the last rib to the frontal line of the shoulder joint. It was established that the age of cows-mothers (calving) affects the viability of calves. Calves born by cows after the second calving were inferior to calves of cows after the first and third calving in terms of skin cover, sucking reflex, standing posture, live weight and blood. The number of incisive teeth of calves born by cows after the third calving is 0.55 and 1.20 more than calves possess from heifers and cows after the second calving. The distance between the last rib and the frontal line of the shoulder joint shown by calves after the third calving is 2.03 and 0.71 cm, respectively, less than their peers demonstrated born by cows after the second and first calving. The distance between the tail and Tuber of calves born by cows after the second calving was 1.26 cm is greater than calves born by heifers showed, and 2.02 cm greater than calves born by cows after the second calving had. It is es-tablished that calves born by cows after the second calving are less viable because of their mothers prolonged lac-tation had been prior to their birth, and poor adaptation to the conditions of milk intensive production technology.