Blood status of high-productive lactating cows during milk yield increase depending on the housing scheme

Abstract

The authors studied the effect of the tethered and loose housing of highly productive lactating cows during the period of milking on the status of their blood. In recent years, loose housing of dairy cattle, as well as robotic milking of cows, has been increasingly introduced in our country. All this requires a more objective assessment from a zootechnical point of view. It is known from scientific sources that the feeding, maintenance, and technology of milking animals have a powerful effect upon blood indicators, the productivity and quality of cows' milk. This served as a more objective approach to the assessment of biochemical blood parameters of highly productive cows during the period of feeding, depending on their housing scheme. It has been ascertained that blood status of high-yielding cows with a tethered content is somewhat higher as compared with the loose-housing, which indicates a more complete normalized feeding of animals on a leash. It should be noted that with a tethered housing, unlike a loose-housing, each cow receives its normalized and balanced diet for all nutrients, mineral and biologically active substances, which positively affects the milk production and blood biochemical parameters, and hence the health of the cows during the period of milk yield increase.