Abstract
Abstract. Effectiveness of the methods applied to control mastitis is low. Therefore, indices are sought which could improve cow immunity to udder pathogens. The aim of the study was to determine the relationship between the polymorphism of blood leukocyte acid phosphatase (AcP), BLV infection, the somatic cell counts and the milk composition in the first trimester of lactation. Studies were performed on a population of 65 Black-and-White cows, aged 3–6 years, from a leukemia-dominated herd. Enzootic bovine leukemia was diagnosed with ELISA and PCR tests. The following analyses were performed: the contents of total protein, lactose, dry matter, somatic cell count in milk as well as microbiological analyses. The obtained results indicate the occurrence of an association between a natural BLV-infection and mammary gland secretion disturbances in cows, whereas the relationship with the acid phosphatase polymorphism is not explicit. The obtained results encourage the continuation of studies into the role of blood leukocytes AcP in the pathogenesis of mastitis.
Highlights
The somatic cell count (SCC) in milk indicates the health state of a mammary gland and the inflammation development in an udder is accompanied by an increase in SCC (AMIN et al, 2002)
Four electrophoretic forms of acid phosphatase (AcP) occurring in six phenotype combinations were recorded in Black-and-White cattle (KACZMARCZYK, 1986), only one of them exhibits a genetically determined polymorphism (KACZMARCZYK and WALAWSKI, 1992)
While analyzing blood leukocyte acid phosphatase polymorphism, the AB phenotype was found in 49 cows (75.4%), while the A phenotype was found in 16 cows (24.6%)
Summary
The somatic cell count (SCC) in milk indicates the health state of a mammary gland and the inflammation development in an udder is accompanied by an increase in SCC (AMIN et al, 2002). Four electrophoretic forms of AcP occurring in six phenotype combinations were recorded in Black-and-White cattle (KACZMARCZYK, 1986), only one of them exhibits a genetically determined polymorphism (KACZMARCZYK and WALAWSKI, 1992). This indicates the possibility of AcP participation in the immunity processes occurring in a body Disturbances of these immunological functions may favor pathogenic infections and disease development. The presence of the electrophoretic forms of acid phosphatase originating from blood leukocytes in milk from cows with mastitis as well as scarcely researched associations with secretion disturbances in naturally BLV-infected cows encouraged the undertaking of these studies. The aim of the study was to determine the relationship between the blood leukocyte acid phosphatase polymorphism, BLV infection, the somatic cell counts and the milk composition in the first trimester of lactation
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
