INFLUENCE OF NATURAL IMMUNOMODULATORS ON PROTEIN FRACTIONS AND CORTISOL CONTENT IN RABBIT BLOOD UNDER STRESS

S. S. Grabovskyi, O. S. Grabovska

Abstract


The results of determination of protein fractions, cortisol content in blood of rabbits, which further added to the feed of natural origin biologically active substances are presented in the article. As an antistressors and immunomodulators in pre-slaughter period are using of spleen extract biologically active substances were obtained with ultrasound application. The purpose of research — determination of changes of protein fractions, cortisol content in rabbits blood before slaughter and their correction of natural origin biologically active substances (spleen extract).

Object and research methods. The experiment was conducted on 15 rabbits with standard diet. Three groups of rabbits five month of age (5 rabbits each) was formed for research. The spleen extract were using as an biologically active substances to the feed rabbits in pre-slaughter period (five days before slaughter). The extracts were applied to feed by aerosol method (70 °alcohol solution of spleen extract volume of 1.4 ml per rabbit) (group I). The rabbits (group II) received to the feed in the same way of 70 °alcohol solution in the same volume. The control group rabbits received the standard feed in the same volume. The feed eating by rabbits was exercised daily. The rabbits ate food completely. The rabbits slaughter was carried out in the morning. The blood plasma protein fractions separation was carried out by horizontal electrophoresis in polyacrylamide gel (PAAG).

Mathematical treatment of the research results worked statistically using the software package Statistica 6.0 and Microsoft Excel for Windows XP. Probability differences was assessed by Student t-test and results considered likely at P ≤ 0.05.

Results and discussion. We measured the ratio of blood plasma protein fractions of rabbits, which in addition to the feed fed of natural origin biologically active substances. As a result of research was found that aerosol introduction of the spleen extract to the rabbits feed increases the Prealbumin concentration in rabbits blood plasma of two experimental groups twice (P ≤ 0.05) and 2.8 times (P ≤ 0.01) compared to the control.

Cortisol level in rabbits (which further added to the feed of spleen extract (I research group) blood plasma was reliable lower by 40 % (Р<0.05) compared to control, that may to indicate decreasing of stress before slaughter. On the rabbits feeding final stage is necessary to consider a pre-slaughter stress and to apply of natural origin biologically active substances. The results which obtained can to use in researches of stress hormones, such as cortisol, on farm animals for organism resistance increasing, correction and avoid their pre-slaughter stress and improve product quality.


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DOI: http://dx.doi.org/10.15421/2015021

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