Abstract
The aim of this study was to estimate the influence of diet supplementation containing essential oils from Origanum vulgare (Lamiaceae) and Citrus spp. (Citraceae) on the economic effect of producing lambs for slaughter. The study material was a group of 222 ewes and 276 lambs of polish lowland sheep. Based on the coproscopic examination carried out at the beginning of the experiment, the flock of sheep was divided into three experimental groups that were uniform in terms of genetic background and age. Animals were kept under the same housing conditions. Differentiation factor was the addition of OILIS SD (Neovia), which contained composition of essential oils from Origanum vulgare (Lamiaceae) and Citrus spp. (Citraceae). During the experiment all born lambs were given to periodic weighing at birth, on the 28th, 56th, 70th and 100th day of life. Based on the body weights obtained the economic value of reared lambs has been estimated, taking into account belonging to particular experimental groups of observed animals. The obtained values were used to calculate the percentage of the difference in value of lambs between the groups and the control group. As a result of the study, has been found beneficial effect of the supplementation lambs diet formulation containing oils from Origanum vulgare (Lamiaceae) and Citrus spp. (Citraceae) on their growth, which also translated into economic value of production. The value of these lambs was higher from 7.83% to 45.17% depending on the age of lambs. Use of the test preparation in antiparasitic prevention may be an opportunity for breeders and producers to increase the economic efficiency of the production of lambs for slaughter.
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