The effects of spray-dried animal plasma in milk replacer without or with the addition of additives containing fructooligosaccharides and spray-dried serum on health, growth, and intake of Holstein calves was measured in two 56-d experiments. In experiment 1, 120 calves were fed milk replacer containing 0 or 20% of crude protein as spray-dried bovine plasma for 42 d and 30 to 60 g/d of additive...

Thirty-eight one day old female Holstein Friesian calves were raised on artificial rearing system. We are used in completely randomized design to evaluate the effects of using milk replacer on body growth and its economic feasibility. The results revealed that the pre-weaning weight gain, pre-weaning growth rate, weaning weight, post weaning growth rate and weight at final week (week twenty) of...

Holstein bull calves (n = 48) were purchased from local sale barns at 3 to 7 d of age and were assigned randomly to a 2 x 2 factorial arrangement of lasalocid in milk replacer (0 or 80 mg/kg) and in calf starter (3 or 44 mg/kg of dry matter). On d 10 after arrival, calves were orally dosed with 100,000 Eimeria oocysts. Intakes of calf starter and milk replacer, body weight (BW), BW gain, excret...

This study was aimed to compare two different milk replacers (MR 22-18 (protein-fat), and MR 21-17 (Protein fat, LACALF)) instead of whole on calf growth performance, blood parameters, economy. 42 Holstein calves born between November 2021 May 2022 an intensive dairy farm in the Mediterranean area were employed for this purpose. The distributed control (whole milk), replacer 22-18, groups, with...

Holstein bull calves (n = 120) were fed milk replacers containing 0, 10, or 20% of the formulation (0, 22, or 44% of crude protein) as spray-dried whole egg powder in a 56-d feeding trial. Milk replacer was medicated with oxytetracycline and neomycin and was fed from d 1 to 42 of the study in a phase-fed program. All experimental milk replacers were supplemented with B vitamins, except biotin. ...

The potential for antibiotic residues in calves from consuming milk containing penicillin G or amoxicillin was investigated. Six calves were fed milk replacer, 6% body weight twice daily, containing 0.293, 2.92, or 5.85 microg of penicillin/ml (ppm) G or 0.25, 1.0, or 2.0 microg of amoxicillin/ml for three consecutive feedings. Urine and blood samples were collected after each feeding. Serum an...

Male Holstein (15) and female crossbred (15) calves, weaned from milk replacer at the end of experimental week 8, were fattened on a maize silage and concentrate diet (MSC). As a control 14 male Holstein calves were conventionally fattened on milk replacer only. The control calves reached the target slaughter weight of about 135 kg after 24.5 weeks and the MSC males after 28 weeks. The female M...