Abstract #M327

# M327
The effects of fatty acid supplementation and provision of a dry teat on disease in veal calves.
Larissa L. Deikun*1,2, Greg Habing1, James D. Quigley2, Kathryn L. Proudfoot1, 1The Ohio State University, Columbus, OH, 2Provimi, Brookville, OH.

Veal calves are at a high risk of disease early in life. Research is needed to determine interventions that reduce disease. The aim of this study was to determine the effects of fatty acid supplementation (NeoTec5g, Provimi) and the provision of a dry teat on bovine respiratory disease (BRD), navel inflammation, and diarrhea. A total of 240 Holstein bull calves from 2 cohorts were randomly assigned to 4 treatments using a 2 × 2 factorial design (n = 60/treatment): control, NeoTec5g, NeoTec5g+Teat, and Teat upon arrival to a commercial veal facility (d 0). Calves were housed in individual pens from 0 to 9 wk and then paired by treatment at wk 9. Milk replacer (MR) was fed twice daily using a proprietary step-up program. NeoTec5g was added to MR at a feeding rate of 0.5g/kg of BW/hd/day for NeoTec5g groups. Calf starter was offered to all calves from d 1. Serum IgG was determined using radial immunodiffusion assays on d 1; 33% of the calves had failure of passive transfer (<10 mg of IgG/mL.) Health exams were conducted twice weekly for 6 wk to diagnose BRD (UC Davis scoring system: 0 = total score for all clinical signs <5, 1 = total score ≥5), navel inflammation (0 = no or mild inflammation, 1 = moderate or severe inflammation) and diarrhea (0 = normal feces, 1 = loose or watery feces). Health data were analyzed using logistic regression (PROC GENMOD in SAS) using calf as the experimental unit; the model included IgG, disease at arrival, cohort, NeoTec5g, Teat, and NeoTec5g × Teat. Data are reported as odds ratios (OR). There was no effect of NeoTec5g (OR = 1.0; P = 0.86), Teat (OR = 1.1; P = 0.57) nor their interaction (P = 0.48) on the odds of BRD. There was no effect of NeoTec5g (OR = 1.3; P = 0.18), Teat (OR = 1.2; P = 0.33) nor their interaction (P = 0.64) on the odds of diarrhea. There was no effect of NeoTec5g (OR = 0.4; P = 0.14) or Teat (OR = 1.2; P = 0.63) on the odds of navel inflammation. There was a tendency for a NeoTec5g × Teat interaction for navel inflammation (P = 0.09). We saw no effect of our interventions on calf health. More research is needed to determine the effect of other factors, such as milk allowance and ventilation, on disease in veal calves.

Key Words: bovine respiratory disease (BRD), diarrhea, inflammation