The intensity of growth of young cattle at the inclusion of pro- and prebiotic preparations

The purpose of research was studying the effi- ciency of application of probiotic "Olin" and prebi- otic "Vetelact" when growing calves colostrum and milk periods. The objectives of the study were to establish the impact of these drugs on the growth of animals, to determine economic efficiency of pro- and prebiotic in the production conditions of LLC "Maslovo" (Oryol Region). The object of the study was young growth of colostrum and milky periods of black-and-white breed. For carrying out the ex- periment three groups of calves having 6 heads in each period of growing on the principle of analogs were formed. In accordance with the dosages rec- ommended by manufacturers, the calves of 1-st experimental group received probiotic "Olin", 2-nd - prebiotic "Vetelact". Mechanical lever scales were used to determine the weight of animals. The re- sults of calves growing of colostrum and milk peri- ods showed that at the end of the experiment theweight of animals of 1-st and 2-nd groups sur- passed control by 3...