title: Ham and belly processing characteristics of immunological castrated barrows (Improvest) fed ractopamine hydrochloride (Paylean).
abstract: Effects of sex class (physically castrated, PC or immunologically castrated, IC) and diet (0 or 5mg/kg ractopamine hydrochloride, RAC) on characteristics of ham and bellies were determined from pigs slaughtered in three groups with similar ending live weights. One carcass per pen per marketing group (n=8) was selected to evaluate further processing characteristics. Data were analyzed as a 2×2 factorial design with a split plot in time and fixed effects of sex, diet, marketing group, and their interactions. IC fresh bellies were thinner (P<0.01) and softer (P<0.01) than PC bellies. IC hams and bellies were leaner (P<0.05) than those from PC pigs. RAC feeding did not affect (P>0.05) fresh ham or belly characteristics but decreased (P<0.01) fat in cured PC bellies. Marketing group affected (P<0.05) fresh quality, processing characteristics, and composition of hams and bellies. Immunological castration and RAC produced leaner finished products but did not alter processing yield of hams or bacon.
authors.affiliation: Department of Animal Science, University of Illinois, Urbana, IL 61801, United States.
authors.forename: B K
authors.initials: BK
authors.lastname: Lowe
authors.affiliation: Department of Animal Science, University of Illinois, Urbana, IL 61801, United States.
authors.forename: M F
authors.initials: MF
authors.lastname: Overholt
authors.affiliation: Department of Animal Science, University of Missouri, Columbia, MO 65211, United States.
authors.forename: G D
authors.initials: GD
authors.lastname: Gerlemann
authors.affiliation: Elanco Animal Health, Greenfield, IN 46140, United States.
authors.forename: S N
authors.initials: SN
authors.lastname: Carr
authors.affiliation: Elanco Animal Health, Greenfield, IN 46140, United States.
authors.forename: P J
authors.initials: PJ
authors.lastname: Rincker
authors.affiliation: Zoetis, Kalamazoo, MI 49007, United States.
authors.forename: A L
authors.initials: AL
authors.lastname: Schroeder
authors.affiliation: Choice Genetics USA, West Des Moines, IA, United States.
authors.forename: D B
authors.initials: DB
authors.lastname: Petry
authors.affiliation: Department of Animal Science, University of Illinois, Urbana, IL 61801, United States.
authors.forename: F K
authors.initials: FK
authors.lastname: McKeith
authors.affiliation: Department of Animal Science, University of Missouri, Columbia, MO 65211, United States.
authors.forename: G L
authors.initials: GL
authors.lastname: Allee
authors.affiliation: Department of Animal Science, University of Illinois, Urbana, IL 61801, United States. Electronic address: adilger2@illinois.edu.
authors.forename: A C
authors.initials: AC
authors.lastname: Dilger
mesh_terms: D050154:Adiposity / Q000187:drug effects; D000284:Administration, Oral; D000818:Animals; D001835:Body Weight; D055598:Chemical Phenomena; D003269:Contraception, Immunologic / Q000009:adverse effects / Q000662:veterinary*; D003296:Cooking; D003433:Crosses, Genetic; D018752:Diet, Fat-Restricted; D004041:Dietary Fats / Q000032:analysis; D005511:Food Handling; D063427:Food Quality; D006133:Growth Substances / Q000008:administration & dosage / Q000009:adverse effects*; D007087:Illinois; D008297:Male; D008460:Meat / Q000032:analysis* / Q000592:standards; D008461:Meat Products / Q000032:analysis* / Q000592:standards; D055595:Mechanical Phenomena; D024510:Muscle Development / Q000187:drug effects; D009919:Orchiectomy / Q000662:veterinary; D010627:Phenethylamines / Q000008:administration & dosage / Q000009:adverse effects; D034421:Sus scrofa
chemical_list: D004041:Dietary Fats; D006133:Growth Substances; D010627:Phenethylamines; C060897:ractopamine
keywords: Further processing; Immunological castration; Paylean; Ractopamine