Monitoring udder health and milk hygiene on-farm using quick screening methods

Nakov, Dimitar and Trajchev, Metodija (2018) Monitoring udder health and milk hygiene on-farm using quick screening methods. Journal of Agriculture and Plant Sciences, 16 (2). pp. 57-63. ISSN 2545-4455

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Abstract

In this paper the use of on-farm screening methods for monitoring udder health and milk quality are
discussed. Special attention was given to the evaluation of the usefulness of California mastitis test (CMT) as
quick field screening test for detection of udder quarters with an intra-mammary infections caused by major
mastitis pathogens. Application of CMT in dairy herd health management in period of early lactation is illustrated
through the two years cross sectional study that was carried out to screening the quarter milk samples with
abnormal milk secretion (AMS) and using of microbiological culture for detection of inframammary infections
(IMI). The quarter milk samples were obtained in two periods of early lactation: the period from calving until
21st day in lactation and period from 22nd to 42nd day in lactation. The quarter level prevalence of AMS and
IMI in the first 21 days in lactation was 5.33% and 4.03%, and up to the 42 days in lactation the prevalence
of AMS and IMI was 5.45% and 4.38%, respectively. The prevalence of AMS and IMI from udder quarters that
show a positive reaction on CMT in the first 21 days in lactation was 56.96 and 55.42; and 55.42 and 44.58 in
the period from 22nd to 42nd day in lactation, respectively. The results indicated that positive CMT reaction
in early lactation may be a good indicator for IMI; there was a significant association between the frequency
of isolation of major pathogens and the CMT score in milk samples obtained in the period of early lactation
(Pearson’s χ2=240.031, df=9, P<0.001).

Item Type:	Article
Subjects:	Agricultural Sciences > Veterinary science
Divisions:	Faculty of Agriculture
Depositing User:	Dimitar Nakov
Date Deposited:	30 Jan 2023 09:50
Last Modified:	30 Jan 2023 19:59
URI:	https://eprints.ugd.edu.mk/id/eprint/30966

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