Efficiency of tissue biostimulant application in growing heifers

Abstract

The materials of research on the effectiveness of tissue biostimulant application in the technology of breeding replacement heifers are presented. The experiment was conducted in the conditions of the Altai Territory on four groups of heifers of the Priobsky type of the Black-and-White breed with a live weight of 51.3 ± 1.48 kg at the age of 1 month. Each group had ten heads. The experiment lasted for 18 months. Animals of the control group were injected subcutaneously with physiological solution every month: from the 1st to the 5th month – at a dose of 3.0 ml/head, from the 6th to the 11th month – 6 ml/head, from the 12th to the 15th month – 12.0 ml/head and from the 16th to the 18th month – 15.0 ml/head. Injections of tissue biostimulant were given to the heifers of the experimental groups according to the following schemes: in the 1st experimental group – from the 1st to the 5th month – at a dose of 2.0 ml/head, from the 6th to the 11th month – 4 ml/head, from the 12th to the 15th month – 8.0 ml/head and from the 16th to the 18th month – 10.0 ml/head; in the 2nd experimental group – from the 1st to the 5th month – at a dose of 3.0 ml/head, from the 6th to the 11th month – 6 ml/head, from the 12th to the 15th month – 12.0 ml/head and from the 16th to the 18th month – 15.0 ml/head; in the 3rd experimental group – from 1st to 5th month – at a dose of 4.0 ml/head, from the 6th to the 11th month – 8.0 ml/head, from the 12th to the 15th month – 16.0 ml/head, from the 16th to the 18th month – 20.0 ml/head. Biostimulant is made of slaughter house tankage and by-products of the antler deer. The scheme of its application, used in the 2nd experimental group of animals, was the most effective and contributed to the increase in body weight in repair heifers up to 14% (p ˂ 0.001), average daily gain – up to 33% (p < 0.001), absolute gain – up to 23% (p ˂ 0.001) and relative gain – up to 2% (p < 0.05).