title: Effects of substituting yellow corn for sorghum in geese diets on magret and foie gras quality.
abstract: The aim of this trial was to study the effects of substitution of yellow corn with sorghum during the growing-finishing (G period), overfeeding (O period), or both periods on magret and foie gras quality in geese. In total, 260 ganders were divided into 4 groups (65 birds in each) differing in the cereal (yellow corn or sorghum) included in the diet given during the G and the O periods, using a 2 × 2 factorial arrangement of treatments. The groups differed in the nature of the cereal in the diet offered to birds between 44 and 104 d of age (G period: a diet containing 500 g of sorghum/kg (SS and SC groups) or a diet containing 500 g of yellow corn/kg (CS and CC groups). The groups differed also in the diet offered to birds between 105 and 120 d of age (O period): 967 g of yellow corn/kg (SC and CC groups) or 965 g of sorghum/kg (SS and CS groups). At the end of the O period, the birds were slaughtered after 10 h of fasting to measure foie gras and breast muscle weight, color, and chemical composition. The mortality in the SC group was higher (P < 0.05) than in the other 3 groups (14.29 vs. 3.58%, average of the 3 groups). After overfeeding, birds fed with sorghum had foie gras that were heavier 984 vs. 885 g, in CS+SS vs. CC+SC groups, respectively; P < 0.001) and less yellow (18.03 vs. 23.97 for b*, in CS+SS vs. CC+SC groups, respectively, P < 0.001) than birds fed with corn. The substitution of yellow corn with sorghum during the G and O periods (SS group) increased the weight of the foie gras, but altered its color to a paler yellow. In contrast, a substitution during the G period only (SC group) resulted in increased mortality during the O period.
authors: Université de Toulouse INPT ENSAT, UMR 1289 Tissus Animaux, Nutrition, Digestion, Ecosystème et Métabolisme, F-31326 Castanet-Tolosan Cedex, France.
authors: J
authors: J
authors: Arroyo
authors: A
authors: A
authors: Auvergne
authors: J P
authors: JP
authors: Dubois
authors: F
authors: F
authors: Lavigne
authors: M
authors: M
authors: Bijja
authors: C
authors: C
authors: Bannelier
authors: H
authors: H
authors: Manse
authors: L
authors: L
authors: Fortun-Lamothe
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000822:Animal Husbandry / Q000379:methods*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D005602:France; D005777:Geese / Q000254:growth & development* / Q000378:metabolism*; D008099:Liver / Q000254:growth & development; D008297:Male; D008460:Meat / Q000592:standards*; D010369:Pectoralis Muscles / Q000254:growth & development; D012867:Skin / Q000254:growth & development; D045868:Sorghum; D003313:Zea mays