Genetic selection programs for dairy cattle in many countries are reviewed, breeding goals are compared, and the degree of uniformity that exists and is required for international genetic programs for health traits is discussed. The most prevalent health disorders in dairy cattle are mastitis, infertility, lameness, milk fever, ketosis, metritis, and displaced abomasums. The manifestation of th...

Self-sucking or sucking other animals in the herd, which has an abnormal behavior disorder, and it is important problem dairy cattle farms. Surgical treatment mostly recommended as a for this disease, causes economic problems. In study, was carried out on self-sucking cows, aimed to investigate effects different surgical techniques modern individual family While of disorder farms been successfu...

A study was conducted to understand the descriptive and molecular epidemiology of antimicrobial-resistant gram-negative enteric bacteria in the feces of healthy lactating dairy cattle. Gram-negative enteric bacteria resistant to ampicillin, florfenicol, spectinomycin, and tetracycline were isolated from the feces of 35, 8, 5, and 42% of 213 lactating cattle on 74, 39, 9, 26, and 82% of 23 farms...

Twinning in cattle ranges from about 1% for beef breeds to about 4% for dairy breeds. The incidence of double births may have both positive and negative effects, which mainly depends on the purpose for which the cattle are raised. Because of freemartinism, as well as management problems connected e.g. with a greater risk of dystocia and retained placenta, it is an undesirable trait in dairy her...

SETTING This paper describes an outbreak of human and related bovine tuberculosis (TB) caused by Mycobacterium caprae in Croatia. A 13-year-old boy clinically presented enlargement of cervical lymph node with consecutive isolation of M. caprae. His 7-year-old sister, who had no clinical signs of disease, hyper-reacted to the purified protein derivative (PPD) test (>25 mm) and peribronchial infi...

A retrospective epidemiological case-control study was performed in Karachi, Pakistan, from January to April 2013. The owners of 217 dairy cattle and buffalo farms from six different locations in Karachi were interviewed. The aim of the study was to identify risk factors associated with the presence of haemorrhagic septicaemia (HS). Farms with a history of at least one instance of sudden death ...

the objective of this study was to determine the optimum replacement strategy using dynamic programming for dairy herds in fars province. a dairy cow is kept several lactations for milk production in the herd. after spending several lactations, milk production gradually begins to decline, while animal health problems rises simultaneously. so one of the most important management decisions of dai...

In a cross-sectional study, performed between October 2002 and April 2003 on 55 Danishdairy herds with 6161 predominantly Holstein Friesian cows the prevalence of 9 hoof lesionswas determined.All test day yields (TDY) of kg Energy Corrected Milk (ECM) in the lactation of diagnosiswere recorded. For the purpose of including hoof lesions in a decision support model anattempt w...