Growth response to dietary additions of bacillus subtilis from weaning to 230 pounds

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dc.contributor.author Swanson, J.A.
dc.contributor.author Hancock, Joe D.
dc.date.accessioned 2010-04-15T21:46:52Z
dc.date.available 2010-04-15T21:46:52Z
dc.date.issued 2010-04-15T21:46:52Z
dc.identifier.uri http://hdl.handle.net/2097/3630
dc.description.abstract Two hundred fifty-five pigs, weaned at 4 wk of age, were used in an experiment to compare the efficacy of Bacillus subtilis and antibiotics as growth promoters for swine from nursery to finishing. Treatments were a nonmedicated control; B. subtilis added at 5 x 105, 1 X 106, or 5 x 106 CFU/g feed; or antibiotics (50 g/ton carbadox during the nursery phase and 100 g/ton chlortetracycline in the growing and finishing phases). Average daily gain and average daily feed intake were greater for pigs fed antibiotics in the nursery and grower phases than for pigs fed diets containing no medication or diets containing B. subtilis. Feed to gain ratio was not affected by the addition of B. subtilis or antibiotics. In the finishing phase, feeding B. subtilis and antibiotic did not affect avg daily gain, avg daily feed intake, or feed to gain ratio. From weaning to market weight, avg daily gain and avg daily feed intake were greater for pigs fed antibiotics than pigs fed the other treatments. Our results indicate that at the levels used in this experiment, feeding B. subtilis is not as effective as feeding antibiotics to improve performance of nursery and growing pigs. Neither B. subtilis nor chlortetracycline affected the performance of finishing pigs. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Swine day, 1989 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 90-163-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 581 en_US
dc.subject Swine en_US
dc.subject Pig en_US
dc.subject Bacillus subtilis en_US
dc.subject Antibiotics en_US
dc.subject Growth performance en_US
dc.title Growth response to dietary additions of bacillus subtilis from weaning to 230 pounds en_US
dc.type Conference paper en_US
dc.date.published 1989 en_US
dc.citation.epage 117 en_US
dc.citation.spage 114 en_US
dc.description.conference Swine Day, Manhattan, KS, November 16, 1989 en_US
dc.contributor.authoreid jhancock en_US

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