Concentration of colostrum immunoglobulins in foremilk of sheep in dependence on the state of the fetoplacental complex

  • I. O. Ostroverkhova Kharkiv State Zooveterinary Academy, Kharkiv, Ukraine
Keywords: fetoplacental complex, immunoglobulins in colostrum, colostrum cotyledons, chorionic, colostrometry, sheep, placenta, lambs

Abstract

Sheep breeding occupies an important place in livestock breeding as an animal husbandry industry. Wool (main products), meat, high-quality fur raw materials, milk are obtained from sheep. The tasks assigned to the industry should be resolved by increasing the number of sheep livestock, increasing their productivity, improving the viability of newborns. During pregnancy, placenta is the organ - intermediator between the mother and the fetus. The provisional organ mentioned above plays a very important role in the triad system of mother-placenta-fetus - it provides the developing organism with everything that the organism needs. In the next postnatal period, the mammary gland plays a mediator role between the mother and the newborn, providing the necessary substances for last one. Immunoglobulins penetrate from the blood or are formed in the mammary gland. If the first portions of colostrum are consumed no later than two hours after birth, the lambs have a duration of colostral immunity in 3–4 weeks, and active protection (production of own antibodies) appears only on 6–7 weeks. Therefore, providing young animals with colostrum with a high content of immunoglobulins during the first hours of life provides long-lasting intense immunity. Feto-placental insufficiency is one of the leading causes of high risk of pregnancy and parturition, a significant level of perinatal losses, marked abnormalities in the development of newborns. With that, the effect of the morpho-functional state of the fetoplacental complex on physiological processes in the mammary gland, and at the same time the concentration of colostral immunoglobulins, remains insufficiently studied, especially in sheep field. The purpose of the work - analyze the effect of the state of the fetoplacental complex on the physiological processes in the mammary gland, namely, the concentration of colostral immunoglobulins of sheep.The work is done in the laboratories of Chair of Veterinary Reproductology and the Training and Production Center for Animal Husbandry and Plant growing of the Kharkiv State Zooveterinary Academy. As a test for the determination of fetoplacental insufficiency, studies of the cellular composition of the vaginal smear of pregnant species were used, which reflects the relationship between the secretion of sex hormones and the cytological picture of the vaginal smear.The quality of colostrum was defined by the method of colostrometry. The area of the villous chorion was defined as the sum of the areas of all cotyledons. The area of each cotyledon was defined by the πr2 formula. After the experiment we can see that the total area of the villous chorion in the control group was 13,9% less than in the study group, and the placenta mass by 28,17%, the weight of the newborns by 48,3%, the immunoglobulin content in the colostrum by 30,15%. At the same time, the number of cotyledons are not significantly differs in both groups.Thus, the dependence of concentrations of immunoglobulins in colostrum from the state of the fetoplacental complex is set. So, sheep with a violation in the fetoplacental system have significantly reduced concentration of immunoglobulins.

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Author Biography

I. O. Ostroverkhova, Kharkiv State Zooveterinary Academy, Kharkiv, Ukraine
аспірант

References

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How to Cite
Ostroverkhova, I. (1). Concentration of colostrum immunoglobulins in foremilk of sheep in dependence on the state of the fetoplacental complex. Theoretical and Applied Veterinary Medicine, 5(2), 19-21. Retrieved from https://bulletin-biosafety.com/index.php/journal/article/view/105