Comparison of different antimicrobial sequences on nursery pig performance and economic return
MU Steidinger, MD Tokach, D Dau, SS Dritz, JM DeRouchey, RD Goodband, and JL Nelssen. 2009. Swine Day, Kansas State University. 122-131.
06-Apr-2010 (16 years 1 months 30 days ago)It is accepted that that the inclusion of antibiotics in nursery pig diets improves pig growth performance. The greatest response is normally through an increase in feed intake, which increases daily gain. Although the benefit of including feed-grade antibiotics in the nursery stage is well documented, limited data are available comparing various antibiotic regimens for nursery pigs. Therefore, the purpose of the present trial was to validate the response to antibiotics observed in our earlier study and to compare the growth and economic response of some different antibiotic regimens that are commonly used in the commercial swine industry.
A total of 1,008 weanling pigs (5.44 kg and 19 d of age) were used in a 42-d experiment to compare different antibiotic regimens on growth performance and economic return. From d 0 to 11 and d 11 to 21, pigs were fed diets containing no antibiotic, a combination of Tiamulin at 35 g/ton and chlortetracycline at 400 g/ton, or Tilmicosin (363 g/ton from d 0 to 11 and 181 g/ton from d 11 to 21). From d 21 to 42, pigs previously fed Tiamulin or Tilmicosin were fed diets containing no medication, Tiamulin, or a combination of Carbadox at 25 g/ton and oxytetracycline at 400 g per ton.
Adding Tiamulin or Tilmicosin to the diet from d 0 to 11 and d 11 to 21 improved (P < 0.01) ADG, ADFI, F/G, and income over feed cost (IOFC). There were no differences (P > 0.21) in ADG or ADFI between pigs fed Tiamulin and pigs fed Tilmicosin; however, pigs fed Tiamulin tended to have better (P < 0.09) F/G from d 0 to 21. Feed cost was also lower (P < 0.01) and IOFC was greater (P < 0.03) from d 0 to 21 for pigs fed Tiamulin than for pigs fed Tilmicosin. Adding Tiamulin or Carbadox to the diet from d 21 to 42 increased (P < 0.05) ADG, ADFI, and IOFC compared with feeding no antibiotic, but there were no differences (P > 0.17) in pig performance or IOFC between pigs fed Tiamulin and Carbadox. For the overall trial, adding antibiotics to the diet during any phase improved (P < 0.05) ADG, ADFI, F/G, and IOFC.
It is concluded that adding antibiotics to the nursery diet improved pig performance and economical return on this commercial farm.
A total of 1,008 weanling pigs (5.44 kg and 19 d of age) were used in a 42-d experiment to compare different antibiotic regimens on growth performance and economic return. From d 0 to 11 and d 11 to 21, pigs were fed diets containing no antibiotic, a combination of Tiamulin at 35 g/ton and chlortetracycline at 400 g/ton, or Tilmicosin (363 g/ton from d 0 to 11 and 181 g/ton from d 11 to 21). From d 21 to 42, pigs previously fed Tiamulin or Tilmicosin were fed diets containing no medication, Tiamulin, or a combination of Carbadox at 25 g/ton and oxytetracycline at 400 g per ton.
Adding Tiamulin or Tilmicosin to the diet from d 0 to 11 and d 11 to 21 improved (P < 0.01) ADG, ADFI, F/G, and income over feed cost (IOFC). There were no differences (P > 0.21) in ADG or ADFI between pigs fed Tiamulin and pigs fed Tilmicosin; however, pigs fed Tiamulin tended to have better (P < 0.09) F/G from d 0 to 21. Feed cost was also lower (P < 0.01) and IOFC was greater (P < 0.03) from d 0 to 21 for pigs fed Tiamulin than for pigs fed Tilmicosin. Adding Tiamulin or Carbadox to the diet from d 21 to 42 increased (P < 0.05) ADG, ADFI, and IOFC compared with feeding no antibiotic, but there were no differences (P > 0.17) in pig performance or IOFC between pigs fed Tiamulin and Carbadox. For the overall trial, adding antibiotics to the diet during any phase improved (P < 0.05) ADG, ADFI, F/G, and IOFC.
It is concluded that adding antibiotics to the nursery diet improved pig performance and economical return on this commercial farm.