Stress resistance and indicators of productive longevity in cows of different breeds

Stress-free keeping of cattle is the basis for rational and effective animal breeding at high-tech dairy complexes. The research was carried out in the Tyumen region on cows of black-and-white and Simmental breeds in the conditions of robotic milking. It was found that Simmental cows were less stress-resistant when using intensive technologies for milk production, as there were more cows with a low type of stress resistance (33.9%) in the group. The use period of black-and-white cows was longer than that of Simmentals by 0.4 lactation (p