title: Growth performance and carcass quality of crossbreds pigs from two Pietrain sire lines fed isoproteic diets varying in energy concentration.
abstract: The effects of net energy (NE) content of isoproteic diets on growth performance and carcass and meat quality traits were studied in crossbreds from Landrace×Large White females and two Pietrain sire lines (PIC L62 vs. German Pietrain). Feed intake (FI) decreased (Lineal, P<0.001) and feed efficiency improved (Lineal, P<0.001) as the NE content of the diet increased. Crossbreds from PIC L62 had greater (P<0.001) FI and average daily gain (ADG) but were less efficient (P<0.01) than crossbreds from German Pietrain. German Pietrain crossbreds were leaner (P<0.001) and had higher shoulder yield (P<0.01) and less fat at m. Gluteus medius (P<0.001) than carcasses from PIC L62 crossbreds. In summary, an increase in the NE concentration of the diet improved feed efficiency but did not affect ADG. Crossbreeds from PIC L62 sires grew faster and had fatter carcasses than crossbreds from German Pietrain.
authors.affiliation: CEI Campus Moncloa, UCM-UPM, 28040, Madrid, Spain; Departamento de Producción Agraria, Universidad Politécnica de Madrid, 28040, Madrid, Spain.
authors.forename: L
authors.initials: L
authors.lastname: Cámara
authors.affiliation: Departamento de Producción Agraria, Universidad Politécnica de Madrid, 28040, Madrid, Spain.
authors.forename: J D
authors.initials: JD
authors.lastname: Berrocoso
authors.affiliation: Vall Companys Group, 25191 Lleida, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Coma
authors.affiliation: CEI Campus Moncloa, UCM-UPM, 28040, Madrid, Spain; Departamento de Producción Animal, Universidad Complutense de Madrid, 28040, Madrid, Spain.
authors.forename: C J
authors.initials: CJ
authors.lastname: López-Bote
authors.affiliation: CEI Campus Moncloa, UCM-UPM, 28040, Madrid, Spain; Departamento de Producción Agraria, Universidad Politécnica de Madrid, 28040, Madrid, Spain. Electronic address: gonzalo.gmateos@upm.es.
authors.forename: G G
authors.initials: GG
authors.lastname: Mateos
mesh_terms: D000273:Adipose Tissue / Q000378:metabolism*; D000821:Animal Feed; D000818:Animals; D001823:Body Composition; D001835:Body Weight; D001947:Breeding; D003433:Crosses, Genetic; D004032:Diet; D004041:Dietary Fats / Q000032:analysis; D004044:Dietary Proteins / Q000008:administration & dosage; D002149:Energy Intake; D005260:Female; D006801:Humans; D008297:Male; D008460:Meat / Q000032:analysis*; D018482:Muscle, Skeletal / Q000378:metabolism*; D013552:Swine
chemical_list: D004041:Dietary Fats; D004044:Dietary Proteins
keywords: Carcass fat; Energy efficiency; Pietrain sire line; Primal cut yield