A method for predicting the stress sensitivity of pigs at an early age

Abstract

The degree of stress sensitivity in crossbred pigs (Yorkshire * Landrace) was established using the “crisis-weaning” method in terms of industrial technology. In assessing the stress sensitivity of piglets during the period of the so-called “crisis-weaning”, which lasts 10-14 days, a number of biological features were used, which served as the basis for the formation of experimental groups. One part of the piglets painlessly transfers the critical period of weaning from the mother, not more than the net does not reduce the average daily weight gain. The other part, on the contrary, reacts with a decrease in the growth energy, while the third part takes an intermediate position. Stress-resistant animals react weaker to technological stimuli and show higher rates of productivity both in fattening and in reproductive qualities. By early maturity, they surpass their stress-sensitive peers by 9.2%, and by average daily growth by 5.1%. According to reproductive qualities, stress-resistant sows surpass stress-sensitive ones by multiplicity by 5.4%, by weight of one pig per 2 months by 1.8%, by preservation - by 7.3%.