To determine the prevalence of Giardia genotypes in pre-weaned dairy calves, fecal samples were collected from a minimum of 18, 1-7-week-old dairy calves per farm on two farms each in the states of Vermont, New York, Pennsylvania, Maryland, Virginia, North Carolina, and Florida. Samples cleaned of fecal debris and concentrated using CsCl density gradient centrifugation were stained and examined...

Mycoplasma bovis is an important cause of pneumonia, otitis media and arthritis in young dairy calves, and there is a critical need for improved preventative strategies for this pathogen. We conducted a randomized, placebo-controlled, double-blinded field trial to determine the efficacy of a commercial M. bovis vaccine for the prevention of M. bovis-associated disease in calves. Calves (n=373) ...

background and objectives: dairy cattle have been implicated as principal reservoir of verotoxin-producing escherichia coli (vtec), with undercooked ground beef and raw milk being the major vehicles of food borne outbreaks. vtec has been implicated as an etiological agent of individual cases and outbreaks in developed countries. this study was designed to determine the prevalence of vetec in di...

Background Comprehensive hematology and biochemistry RIs are currently lacking in the literature for young dairy calves based on sample sizes more than 120. Young at a relatively high risk of poor health welfare outcomes. They have morbidity mortality first 2 weeks life, many transported fasted during this time. For example, non-replacement Australia New Zealand usually 5-12 days old when to ab...

Professional heifer growers and dairy producers are faced with the challenge of raising healthy calves, while still paying close attention to rearing costs and profit. Factors that may be considered in selecting a liquid feeding program may include the number of calves fed, economics and cash flow, nutritional characteristics, calf performance targets, resource availability (e.g. consistent sup...

Over the last 25 yr, extensive research has been conducted on the biology, nutrition, and management of dairy cows during the transition from gestation to lactation. The focus of this research has been to minimize the occurrence of health problems around parturition and to maximize subsequent milk production. Very little attention has been paid to potential effects of different nutritional prog...

in this study, the effect of chamomile extract on the ability of neonatal calves to absorb immunoglobulin g (igg) was evaluated. an ethanolic extract of chamomile was obtained with the concentration of 111 mg/ml. calves were randomly divided into four groups, each receiving one of four chamomile treatments; 1: low dose (lc; 5.5 mg/kg body weight; 2: moderate dose (mc; 11 mg/kg); 3: high dose (h...