Long-term breeding of pigs aimed to increase productivity and amount of meat. Research the influence of stress resistance and steadiness of neural processes on the qualitative and quantitative characteristics of boars sperm efficiency of various breeds.
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Vinnytsia national agrarian university THE INFLUENCE OF STRESS RESISTANCE AND STRESS SENSITIVE OF BOARS ON THE LEVEL OF CONDITIONED REFLEX ACTIVITIES AND SPERM EFFICIENCY Zotko M.O., candidate of biological science, associate professor Formulation of the problem Nowadays we revive and build hog-breeding industrial complexes, but only 40-60% of genetic potential productivity of animals is being realized in conditions of intensive technology [1]. The industrial technology of hog-breeding runs contrary to the physiological characteristics of the organism, established over a long evolution. That’s why the problem of various stresses influence on the animals is rather actual for hogbreeding. The long-term breeding of pigs aimed to increase productivity and amount of meat had a negative impact on their adaptive properties to various stressors [1]. It was proved that purposeful breeding and early accustoming of boars to phantom facilitates obtaining sperm at the age of 4-5 months and allows evaluating their semen; it also allows conducting a complex assessment of the boars-sires development and performance at the age of 6 months [3]. stress resistance boar sperm Material and methods of research The aim of the work was to research the influence of stress resistance and steadiness of neural processes on the qualitative and quantitative characteristics of boars sperm efficiency of various breeds. The research was conducted under the conditions of industrial complex, we took boar-sires of such breeds as Large White, Poltava beef, Landrace and Duroc got from the parents of class elite and elite-record. The stress resistance and stress sensitive of boars was determined by halothane method; the boars were of the age of 45-50 and 60 days. The 7-8 months boars were trained to copulate with stuffed animals. Sperm was taken once a week, and its volume was determined, activity and concentration of spermatozoa in 1 ml. were also researched. While the first conditioned reflexes of getting sperm were observed we also researched the animals behavior. Experimental and digital material was treated by variational statistics. The difference is veritable at *Р
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