title: Dietary micronized-dehulled white lupin (Lupinus albus L.) in meat-type guinea fowls and its influence on growth performance, carcass traits and meat lipid profile.
abstract: The present study aimed to evaluate the effects of dietary substitution of soybean meal (SBM) with micronized-dehulled white lupin (Lupinus albus L. cv. Multitalia) in guinea fowl broilers on their growth performance, carcass traits, and meat fatty acids composition. A total of 120 one-day-old guinea fowl females were randomly assigned to 2 treatments which were fed from hatch to 12 wk of age. Birds were fed 2 wheat middlings-based diets comprising of a control treatment which contained SBM (195 g/kg) and a test diet containing micronized-dehulled lupin (240 g/kg) as the main protein source. Replacing SBM with treated lupin had no adverse effect on growth traits, dressing percentage, or breast and thigh muscles relative to the weight of guinea fowls. A decrease (P < 0.05) of abdominal fat was found in guinea fowls fed lupin-diet. Breast muscle from birds fed lupin had higher lightness (L*) (P < 0.01) and redness (a*) (P < 0.05) scores and water-holding capacity (P < 0.05) than the SBM-control diet. Meat from guinea fowls fed lupin had less total lipids (P < 0.05) and cholesterol (P < 0.01), and higher concentrations of phospholipids (P < 0.01). Feeding treated lupin increased polyunsaturated fatty acid (PUFA) levels in breast meat and decreased saturated fatty acid (SFA) concentrations. Our findings suggest that replacing SBM as protein source with micronized-dehulled lupin in meat-type guinea fowl diet can improve carcass qualitative characteristics, enhancing also meat lipid profile with no effect on growth traits.
authors.affiliation: Veterinary Science and Animal Production Section, Department of Emergency and Organ Transplantation, University of Bari "Aldo Moro", 70010 Valenzano, Bari, Italy vincenzo.tufarelli@uniba.it.
authors.forename: V
authors.initials: V
authors.lastname: Tufarelli
authors.affiliation: Veterinary Science and Animal Production Section, Department of Emergency and Organ Transplantation, University of Bari "Aldo Moro", 70010 Valenzano, Bari, Italy.
authors.forename: R
authors.initials: R
authors.lastname: Demauro
authors.affiliation: Veterinary Science and Animal Production Section, Department of Emergency and Organ Transplantation, University of Bari "Aldo Moro", 70010 Valenzano, Bari, Italy.
authors.forename: V
authors.initials: V
authors.lastname: Laudadio
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000822:Animal Husbandry; D000824:Animal Nutritional Physiological Phenomena / Q000187:drug effects; D000818:Animals; D001823:Body Composition / Q000187:drug effects; D004032:Diet / Q000662:veterinary; D005260:Female; D046094:Galliformes / Q000254:growth & development / Q000502:physiology*; D050356:Lipid Metabolism / Q000187:drug effects*; D031297:Lupinus / Q000737:chemistry*; D008460:Meat / Q000032:analysis*; D011897:Random Allocation
keywords: carcass; growth; guinea fowl; meat quality; sweet lupin; technology