<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The aim of this study was to evaluate the occurrence of mastitis and its impact on the reproductive parameters in a herd of 180 dairy cows. Based on the herd records 127 cows of Slovak spotted cattle and their crosses with red Holstein were selected for study between 1—2 months after calving. The examination of the health status of the mammary glands consisted of: the clinical examination of the udder, the California mastitis test (CMT) supplemented by the collection of mixed milk samples, and the laboratory examination of bacterial pathogens causing the mastitis. In addition to the mam­mary investigation, reproduction indicators such as the length of the insemination interval, the service period, the intercalving period and the insemination index were also analyzed. The results of this study indicated: a high incidence of mastitis (41.6 %), especially latent (21.2 %), subclinical (15.7 %) and clinical (4.7 %) forms were most common in the herd. The most frequently isolated bacteria from the infected milk samples were: coagulase negative staphylococci (54.1 %), <italic>S. aureus</italic> (16.9 %), <italic>Streptococcus</italic> spp. (15.0 %), <italic>A. viridans</italic> (7.5 %) and <italic>Ent. faecalis</italic> (6.4 %). According to the available literature, the optimum values of the intercalving period were 365—400 days, the insemination interval 55—80 days, the insemination index 1.2—2 and the service period 60—110 days. In comparison, our results showed increased, unsatisfactory reproductive values in the group of dairy cows with clinical mastitis. While in healthy cows as well as in groups of cows with latent and subclinical mastitis, all of the reproductive indicators were within the optimal levels.</p></abstract>

The aim of this study was to evaluate the occurrence of mastitis and its impact on the reproductive parameters in a herd of 180 dairy cows. Based on the herd records 127 cows of Slovak spotted cattle and their crosses with red Holstein were selected for study between 1—2 months after calving. The examination of the health status of the mammary glands consisted of: the clinical examination of the udder, the California mastitis test (CMT) supplemented by the collection of mixed milk samples, and the laboratory examination of bacterial pathogens causing the mastitis. In addition to the mam­mary investigation, reproduction indicators such as the length of the insemination interval, the service period, the intercalving period and the insemination index were also analyzed. The results of this study indicated: a high incidence of mastitis (41.6 %), especially latent (21.2 %), subclinical (15.7 %) and clinical (4.7 %) forms were most common in the herd. The most frequently isolated bacteria from the infected milk samples were: coagulase negative staphylococci (54.1 %), S. aureus (16.9 %), Streptococcus spp. (15.0 %), A. viridans (7.5 %) and Ent. faecalis (6.4 %). According to the available literature, the optimum values of the intercalving period were 365—400 days, the insemination interval 55—80 days, the insemination index 1.2—2 and the service period 60—110 days. In comparison, our results showed increased, unsatisfactory reproductive values in the group of dairy cows with clinical mastitis. While in healthy cows as well as in groups of cows with latent and subclinical mastitis, all of the reproductive indicators were within the optimal levels.

The Impact of Mastitis on Reproductive Parameters of Dairy Cows

University of Veterinary Medicine and Pharmacy

Department of Anatomy, Histology and Physiology

Department of Pharmacology, Faculty of Medicine

Department of Animal Husbandry and Animal Hygiene

University of Veterinary and Pharmaceutical Sciences Brno

Folia Veterinaria

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"The Impact of Mastitis on Reproductive Parameters of Dairy Cows"}

The aim of this study was to evaluate the occurrence of mastitis and its impact on the reproductive parameters in a herd of 180 dairy cows. Based on the herd...

The Impact of Mastitis on Reproductive Parameters of Dairy Cows

Published Online: Sep 28, 2019

Page range: 72 - 78

Received: Jun 29, 2019

Accepted: Sep 02, 2019

DOI: https://doi.org/10.2478/fv-2019-0030

Keywords
dairy cows, intercalving period, mastitis, pathogens, service period

© 2019 F. Zigo et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The Impact of Mastitis on Reproductive Parameters of Dairy Cows

Published Online: Sep 28, 2019

Page range: 72 - 78

Received: Jun 29, 2019

Accepted: Sep 02, 2019

DOI: https://doi.org/10.2478/fv-2019-0030

Keywordsdairy cows, intercalving period, mastitis, pathogens, service period

© 2019 F. Zigo et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
dairy cows, intercalving period, mastitis, pathogens, service period