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Online Journal of Veterinary Research©
Volume 25 (3): 245-251, 2021.
Effect of parity, lactation and breed on colostrum and milk lactoferrin and immunoglobulin A levels in ewes.
Zahraa Hussien AL-Moosawi1, Majida Abdulkhaliq Alqayim2
1,2 Department of Physiology, College of Veterinary Medicine, University of Baghdad, Iraq.
AL-Moosawi ZH, AL-Qayim MA, Effect of parity, lactation and breed on milk lactoferrin and immunoglobulin A levels in ewes, Onl J Vet Res., 25 (3): 245-251, 2021. Lactoferrin and immunoglobulins in milk can affect offspring immunity, health, growth, performance and intestinal microbiota. We determined lactoferrin and immunoglobulin A by ELISA in milk of 20 Awassi and 20 karakul late pregnancy ewes for 60 days of lactation and partus. In Awasi ewes, mean lactoferrin in colostrum was 27.26 and milk 13.79μg/ml at 30 days and 12.28μg/ml at 60 days whereas in Karakul ewes were 15.54, 12.09 and 10.58 μg/ml, respectively (P < 0.05). Lactoferrin in colostrum was higher than milk declinining 48-54 % in Awassi and 18-31% in karakul ewes by 60 days. Increased parity was associated with reduced lactoferrin in colostrum in both breeds. We found no differences in milk immunoglobulin A levels in colostrum but in milk by days 30 and 60 declined 32-40% in Awassi ewes but only 18 to 24% in Karakul ewes (P < 0.05). We found positive correlation between milk lactoferrin and immunoglobulin A in Awassi R2=0.958, and Karakul ewes R2=0.924.
KEYWORDS: Lactofferin, sIgA, Colostrum, Milk, Awassi, Karakul ewes.