INFLUENCE OF MORPHOFUNCTIONAL PARAMETERS OF MARES OF NOVOOLEXANDRIVSKII DRAFT ON THEIR MILK PRODUCTIVITY

The research is devoted to determining the relationship of milk productivity of mares of the Novoolexandrivskii Draft with their morph functional indicators: torso and udder measurements. in two independent experiments (in two different farms), the indicator of milk productivity of mares of the Novoolexandrivskii Draft was studied depending on morph functional indicators – torso and udder measurements. the highest level of milk productivity was established in large-type mares by height at the Withers (150 cm) and chest circumference (190 cm). At the same time, minor correlations were established between the indicator of milk productivity and height at the withers (r=0.112) and oblique trunk length (r=0.109). In the second experiment, milk productivity was most correlated with chest circumference (r=0.280), metacarpal circumference (r=0.245), and trunk circumference (r=0.232). Body measurements of the studied mares are quite closely related: height at the withers × circumference of the body (r=0.811), circumference of the body × circumference of the metacarpus (r=0.573), chest circumference × circumference of the metacarpus (r=0.559), height at the withers × circumference of the metacarpus (r=0.520). By determining the development indicators of foals from Mares of various types, it was established that both foals and mares obtained from large-type mares prevailed over peers obtained from small-type mares by live weight in the development periods from birth to 18 months of age. It was found that large-type mares are also characterized by higher indicators of udder girth and length, while small-type mares predominated in udder depth. Positive correlation coefficients of the average bond strength were found between the milk productivity of mares and udder circumference (r=0.370) and udder length (r=0.301), with udder depth the bond is weak and negative (r=-0.113). A fairly strong relationship was found between udder measurements: girth × length (r=0.665), length × depth (r=0.570), girth × depth (r=0.361). The udder girth index significantly and positively correlated with the indicators of body structure indices: format (r=0.654), massiveness (r=0.514), Bony (r=0.391). The udder length index is positively and significantly correlated with the bony index (r=0.486) and format index (r=0.323).