Mammary gland inflammation (mastitis) continues to be the most frequent and expensive disease of dairy cows (Zaragoza et al., 2011). It negatively influences the economic effectiveness of farms and the hygienic quality of milk (Bradley, 2002). More than 135 different microorganisms have been found as etiological agents of mastitis (Watts, 1988; Bradley, 2002). In addition to bacterial agents, s...

Background: Sub-clinical mastitis is an inflammation of mammary glands which is a big economic damage. Treatment of this disease isn’t recommended due to antibiotic residue in milk. Objective: In this study, clinical efficacy of - Zataria multiflora Boiss essential oil (ZMBeo) in treatment of sub-clinical mastitis was evaluated and other expedients were prepared. Methods: Thirty Holsteins cow...

The aim of this study was to verify the existence of a nitric oxide (NO) cycle in goat milk and to study how changes in it affect milk composition during subclinical mastitis. Fifteen lactating dairy goats in which one udder-half was free from bacterial infection and the contra-lateral one was naturally infected with various species of coagulase-negative staphylococci were used. In comparison t...

Refining the recommended approach to mastitis control in dairy herds is a continual process. Recently developed concepts and practices are described. INTRODUCTION Even though great technological advances have been made, mastitis continues a major economic issue for dairy producers. Thus, researchers and dairy advisors continue to refine the National Mastitis Council (NMC) recommended mastitis c...

Background and Aim Mastitis is one of the most vital noteworthy monetary risks to dairy ranchers and affects reproductive performance in dairy cattle. However, subclinical mastitis (SCM) negatively affects milk quality and quantity and associated with economic losses as clinical mastitis. It is recognizable only by additional testing. Somatic cell count (SCC) is currently used worldwide for the...

A variety of diagnostic tests are routinely used to evaluate milk quality on dairy farms. Tests such as bulk milk bacterial counts, bulk tank somatic cell count and tests for adulterants such as water, sediment or antibiotics are routinely used by regulatory agencies. Other tests such as individual cow somatic cell count values, Staphylococcus aureus milk antibody tests, the California Mastitis...

A retrospective study using analysis of plasma copper and zinc, and erythrocyte glutathione peroxidase from 2 080 dairy and beef cow herds was conducted to evaluate the relationship between trace-element status and production, reproduction and health in cows and their calves. Classification of the herd status as deficient, marginal, low-adequate or high-adequate was based on the lower tercile o...

The objectives of this study were to determine the effects of parity on milk production, body condition change, periparturient health, and culling in Korean dairy herds. The data utilized included; milk yield, body condition score, cow parity, calving condition, periparturient disorders, culling, and reproductive status, which were recorded from 1290 calvings in eight dairy herds. The mean milk...