Influence of genetic and paratypical factors on lamb’s resistance

S Ch Kazanchev,M.G Tleinsheva,R.Z Abdulkhalikov,A.M Unazhokov,O.O Getokov,S Knyazev,O Panfilova,O Loretts,M Tsoy,V Kukhar

doi:10.1051/e3sconf/202125408022

S Ch Kazanchev, M.G Tleinsheva + Show 8 more

Open Access

https://doi.org/10.1051/e3sconf/202125408022

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Abstract

The article studies the influence of the frequency and time of consumption of colostrum on the immunobiological reactivity of lambs obtained from mothers of the same age, selected according to the principle of analogues. It has been established that first lambers (9–16 months) with intensive rearing and abundant feeding have an average level of resistance of the organism and its indicators are characterized by stability. The offspring obtained from these first lambers (experimental group) in terms of the level of immune parameters are not inferior to their peers obtained from the ewes of the control group. Lambs from first lambers in terms of lysozyme activity of blood serum, immunoglobulin content are superior to their peers from older ewes (the difference is not statistically significant, P> 0.05). At the same time, young animals regardless of the age of their mothers have the same vitality. The lambs' mortality from birth to wean in the experimental and control groups was approximately the same - 7.2 and 8.0%, respectively.

Highlights

The productivity of sheep in many farms in different zones of the country has significantly increased as a result of a systematic improvement in the breed qualities of animals, feeding and housing conditions
One of the reasons for this lies in the fact that a number of large enterprises have not created conditions for keeping highly productive animals. They are forced to adapt to external conditions, which is associated with a decrease in the resistance of young animals to diseases [3-5]
The task is to reduce the loss of young animals in the initial period of rearing by improving breeding work [3-5]

Summary

Introduction

The productivity of sheep in many farms in different zones of the country has significantly increased as a result of a systematic improvement in the breed qualities of animals, feeding and housing conditions. One of the reasons for this lies in the fact that a number of large enterprises have not created conditions for keeping highly productive animals. They are forced to adapt to external conditions, which is associated with a decrease in the resistance of young animals to diseases [3-5]. It should be noted that with expanded reproduction in the herd the proportion of ewes increased significantly. It is necessary to develop a technology for keeping first lambers and their lambs, which significantly increases the safety of young animals and the level of their natural resistance. We determined the indices of natural resistance of young animals depending on the age of mothers, the frequency of feeding with colostrum and the duration of lambing, as well as immunobiological indicators depending on the origin of the lambs

Material and research methods

Research results and their discussion

Findings

Conclusion