Evaluating a pre-weaning ceftiofur (Naxcel~(R)) three-injection program and its effects on post-weaning mortality of 5 - 25 kg pigs

摘要

A trial was conducted using pigs flowing from a 4000 head sow unit into a single site, multiple room, all-in-all-out nursery to evaluate a pre-weaning ceftiofur three-injection program for reducing post-weaning mortality in the nursery. Control group1 (6293 pigs) and 2 (4514 pigs) followed normal sow farm management procedures without the addition of ceftiofur. Pigs in the treatment group received 3 injections, at 1, 7 and 18 days of age at a concentration of 8 mg/ml. The estimated weights at injection were 1.7, 3.3, and 5.0 kg respectively at the targeted dose of 4.85 mg/kg. Accordingly, the volume of injection at each of the three ages was 1 ml at day one, 2 ml at day seven, and 3 ml at weaning. Thus, pigs in the treatment group received a totalof 48 mg of ceftiofur prior to weaning. Post-weaning mortality was recorded and analyzed by nursery room. Medication/vaccination administration was documented, as well as environmental effects noted. There was no statistically significant difference (P>0.05) when the treatment group is compared to the combined control groups. However, there is a statistically significant difference (P<0.01) when the groups are compared individually. Furthermore, during and after the treatment, a downward trend in post-weaning mortality was noted.