title: Effects of pantothenic acid on growth performance and carcass characteristics of growing-finishing pigs fed diets with or without ractopamine hydrochloride.
abstract: Two experiments evaluated effects of added pantothenic acid on performance of growing-finishing pigs. In Exp. 1, 156 pigs (PIC, initial BW = 25.7 kg) were used in a 3 x 2 x 2 factorial to evaluate the effects of added pantothenic acid (PA; 0, 22.5, or 45 ppm), ractopamine.HCl (RAC; 0 or 10 mg/kg), and sex on growth performance and carcass traits. Pigs were fed increasing PA from 25.7 to 123.6 kg (d 0 to 98) and RAC for the last 28 d before slaughter. Increasing the amount of added PA had no effect (P > 0.40) on ADG, ADFI, or G:F from d 0 to 70. A PA x sex interaction (P < 0.03) was observed for ADG and G:F from d 71 to 98. Increasing the amount of added PA increased ADG and G:F in gilts, but not in barrows. Increasing the amount of added PA had no effect (P > 0.38) on carcass traits. Added RAC increased (P < 0.01) ADG and G:F for d 71 to 98 and d 0 to 98 and increased (P < 0.01) LM area and percentage lean. In Exp. 2, 1,080 pigs (PIC, initial BW = 40.4 kg, final BW = 123.6 kg) were used to determine the effects of increasing PA on growth performance and carcass characteristics of growing-finishing pigs reared in a commercial finishing facility. Pigs were fed 0, 22.5, 45.0, or 90 mg/kg of added PA. Increasing the amount of added PA had no effect (P > 0.45) on ADG, ADFI, or G:F, and no differences were observed (P > 0.07) for carcass traits. In summary, adding dietary PA to diets during the growing-finishing phase did not provide any advantages in growth performance or carcass composition of growing-finishing pigs. Furthermore, it appears that the pantothenic acid in corn and soybean meal may be sufficient to meet the requirements of 25- to 120-kg pigs.
authors.affiliation: Department of Animal Sciences and Industry, Kansas State University, Manhattan 66506-0201, USA.
authors.forename: C N
authors.initials: CN
authors.lastname: Groesbeck
authors.forename: R D
authors.initials: RD
authors.lastname: Goodband
authors.forename: M D
authors.initials: MD
authors.lastname: Tokach
authors.forename: S S
authors.initials: SS
authors.lastname: Dritz
authors.forename: J L
authors.initials: JL
authors.lastname: Nelssen
authors.forename: J M
authors.initials: JM
authors.lastname: DeRouchey
mesh_terms: D000318:Adrenergic beta-Agonists / Q000494:pharmacology*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001823:Body Composition / Q000187:drug effects; D019587:Dietary Supplements; D004305:Dose-Response Relationship, Drug; D004435:Eating / Q000187:drug effects; D005260:Female; D008297:Male; D009751:Nutritional Requirements; D010205:Pantothenic Acid / Q000494:pharmacology*; D010627:Phenethylamines / Q000494:pharmacology*; D012737:Sex Factors; D013552:Swine / Q000254:growth & development*; D014803:Vitamin B Complex / Q000494:pharmacology*; D015430:Weight Gain / Q000187:drug effects*
chemical_list: D000318:Adrenergic beta-Agonists; D010627:Phenethylamines; D014803:Vitamin B Complex; D010205:Pantothenic Acid; C060897:ractopamine