Ultrasound has relatively low use in the veterinary practice of cattle, especially diagnosis respiratory diseases. There is little information on imaging patterns and occurrence these diseases calves from dystocic parturition, ability to diagnose subclinical The correct clinical aims support efficient growth expression genetic potential for replacer calves. Eighteen Holstein calves, five which ...

The decline of dairy cattle fertility worldwide remains a major concern, with conception rates to first service commonly below 40%. The length and severity of negative energy balance postpartum are unfavorably correlated with fertility, suggesting that the length and severity of negative energy balance and fertility are linked via several hormones or metabolites. These compounds therefore have ...

To evaluate the effect of adding calcium salt of soybean oil on the performance and growth of suckling calves, 18 Holstein calves, after the birth with weight average 3.94 ± 42.43 kg were randomized into three groups. The experimental allotments including: 1) the starter without calcium salt of soybean oil (control), 2) starter with 0.3% calcium salt of soybean oil and 3) starter containing 0.5...

Abstract Introduction Early vaccination of cattle with an inactivated commercial bacterial vaccine against bovine respiratory disease has been reported to increase antibody production and can alleviate the disease. However, its dosage little investigated in young Holstein calves. This study addresses need establish guide values for these animals. Material Methods Healthy calves received Histoph...

The post-operative effects of three formulations of topical anaesthetic and a cornual nerve block on the sensitivity of scoop dehorning wounds in calves were compared in two trials. In Trial 1, 21 female Holstein dairy calves aged 8 to 24 weeks were randomly allocated to two groups: (1) scoop dehorning with a post-operative application of a novel topical anaesthetic powder (DTAP, n = 10); and (...

The objective of this study was to compare the effects of rearing calves outdoors, with and without all-weather calf jackets, with calves reared indoors on calf immunity and animal performance. In February 1999, male Holstein calves (mean (s.e.) weight 55 (1.90) kg) were randomly assigned to one of three treatments (n=30 per treatment): 1) outdoors with jacket, (J; mean age 19 (s.e. 2.0) days);...

OBJECTIVE To describe plasma pharmacokinetic parameters and tissue elimination of flunixin in veal calves. ANIMALS 20 unweaned Holstein calves between 3 and 6 weeks old. PROCEDURES Each calf received flunixin (2.2 mg/kg, IV, q 24 h) for 3 days. Blood samples were collected from all calves before the first dose and at predetermined times after the first and last doses. Beginning 24 hours after i...

Negative emotional states in humans are associated with a negative (pessimistic) response bias towards ambiguous cues in judgement tasks. Every mammalian young is eventually weaned; this period of increasing nutritional and social independence from the dam is associated with a pronounced behavioural response, especially when weaning is abrupt as commonly occurs in farm animals. The aim of the c...