The differences in subclinical mastitis prevalence and effect on milk production due to cows’ breed and breeding region

Abstract

The purpose of this study was to look into how the breed (Holstein or Simmental) and breeding region (Central, Eastern, and Mediterranean) influence the occurrence of subclinical mastitis and its impact on milk production. In order to do this, the study examined 3,953,637 test-day records of Holstein cows and 4,922,751 test-day records of Simmental cows. The daily lactose content was utilized to diagnose subclinical mastitis. The study’s findings showed that subclinical mastitis rates varied significantly depending on the breed and breeding location. The Eastern region’s Holstein cows were the least common. On the test-day, when subclinical mastitis was found in all regions and breeds, the lowest daily milk output was also noted. Subsequent milk records, however, revealed an increase in milk output that differed according to breed and breeding location. The Holstein cows from the Eastern region showed the largest overall increase in milk production. According to these results, healing potential differs greatly depending on the breed and breeding area. Eastern region farms raised Holstein cows, who had the lowest rate of mastitis-related problems and the best likelihood of recuperating and reaching their genetic output potential. As a result, this study implies that dairy cows that are reared at the large, specialized dairy farms that are common in the Eastern region recover more quickly.