Bovine neosporosis is a parasitic disease of major concern in cattle industry worldwide. Although abortion is the more frequent clinical presentation, sporadic congenital clinical bovine neosporosis has been scarcely reported in newborn calves. Neospora caninum encephalomyelitis was diagnosed in two of 314 newborn calves submitted for necropsy and laboratory analysis between 2000 and 2014. The ...

The present study was conducted to evaluate the effects of physical form of starter and alfalfa hay (AH) provision on growth performance, ruminal fermentation, and blood metabolites of Holstein dairy calves. Forty-four 3d-old Holstein dairy calves with a mean starting BW of 39.9 ± 1.1 kg were used in a 2 × 2 factorial arrangement. The factors were dietary forage level (0 or 150 g kg-1</sup...

BACKGROUND Thoracic ultrasonography (TUS) is a specific and relatively sensitive method to diagnose bronchopneumonia (BP) in dairy calves. Unfortunately, as it requires specific training and equipment, veterinarians typically base their diagnosis on thoracic auscultation (AUSC), which is rapid and easy to perform. HYPOTHESIS/OBJECTIVES We hypothesized that the use of TUS, in addition to AUSC,...

Gastroenteritis is one of the leading causes of morbidity and mortality among young and newborn animals and is often caused by multiple intestinal infections, with rotavirus and bovine coronavirus (BCoV) being the main viral causes in cattle. Given that BCoV is better studied than equine coronaviruses and given the possibility of interspecies transmission of these viruses, this research was des...

forty neonate calves were used in this study. the animals were divided into two treatment (n = 20) andcontrol (n = 20) groups. in the treatment group, oral iron as ferrous sulphate was supplemented to each calf atthe dose of 150 mg/day for 28 days, from the birthday. blood sampling was taken from jugular veinimmediately after birth and on days 7, 14, 21 and 28 after birth. significant differenc...

The key sector that ensures the country’s food security is a comprehensive enhancement of livestock raising, including animal husbandry. intensification dairy production leads to increased metabolic stress in animals. Under such conditions, any technological failure can result disorder metabolism cows and development diseases, ketosis (acetonemia). Ketone bodies calf’s body produce an intoxicat...

• Metaphylactic antimicrobial treatment of weaned dairy calves immediately prior to movement from individual to group housing offers an opportunity to prevent bovine respiratory disease (BRD) in these high-risk animals. • The efficacy of DRAXXIN ® metaphylaxis in high-risk dairy calves was evaluated in 6 controlled research trials conducted in different regions of the US. • A single metaphylact...

BACKGROUND The diagnostic tools for bovine respiratory disease diagnosis include clinical inspection, thoracic auscultation, and ultrasonography. HYPOTHESIS Thoracic auscultation and clinical examination have limitations in the detection of lung consolidation in dairy calves. ANIMALS Prospective cohort of 106 preweaned calves from 13 different dairy herds (10 with a history of active bovine...

BACKGROUND Neonatal diarrhea accounts for more than 50% of total deaths in dairy calves. Few population-based studies of cattle have investigated how the microbiota is impacted during diarrhea. OBJECTIVES To characterize the fecal microbiota and predict the functional potential of the microbial communities in healthy and diarrheic calves. METHODS Fifteen diarrheic calves between the ages of...