title: Effect of supplementation on the feed intake and performance of confined and scavenging crossbred growing chickens in Burkina Faso.
abstract: An experiment was conducted to evaluate the performance of crossbred growing chickens (Rhode Island Red x indigenous Burkina Faso hens) from 6 to 17 weeks of age, under five feeding/management regimes: (1) CMx(+), confined and given a mixed feed containing cracked maize and cowpea and a vitamin-mineral premix ad libitum; (2) CS(+), confined and offered ad libitum a choice of cracked maize and cowpea with the premix; (3) ScS(+), scavenging from 09:00 to 16:00 with the diet in treatment (2) available from 16:00 to 09:00; (4) ScS(-), treatment (3) but without the premix; and (5) ScO, scavenging only, with no supplements provided. Daily dry matter (DM) intake was highest for CS(+) (43.5 g), and lowest for CMx(+) (33.6 g) (p < 0.05), with intermediate intakes for ScS(+) and Sc(-) of 36.7 g and 36.2 g, respectively. The ratios of intakes of cowpea to maize were 50:50, 21:79, 27:73 and 22:78 for CMx(+), CS(+), ScS(+) and ScS(-), respectively (p < 0.05). Dietary concentrations of crude protein (CP) were 15.7%, 11.5%, 12.3% and 11.6% of DM for CMx(+), CS(+), ScS(+) and ScS(-), respectively. Average daily gains (ADG) were 8.15 g, 5.24 g, 6.03 g, 5.36 g and 4.45 g for CMx(+), CS(+), ScS(+), ScS(-) and ScO, respectively, and were significantly higher for CMx(+) (p < 0.05). Feed conversion ratio was highest for CS(+) and lowest for CMx(+). ADG of the males (6.44 g) was significantly (p < 0.05) higher than that of the females (5.86 g). Breast and thigh muscle weights were highest for ScS(+) (p < 0.05).
authors.affiliation: Centre National de la Recherche Scientifique et Technologique, P.O. Box 7047 Ouagadougou, Burkina-Faso.
authors.forename: S
authors.initials: S
authors.lastname: Pousga
authors.forename: H
authors.initials: H
authors.lastname: Boly
authors.forename: J E
authors.initials: JE
authors.lastname: Lindberg
authors.forename: B
authors.initials: B
authors.lastname: Ogle
mesh_terms: D000821:Animal Feed; D000822:Animal Husbandry / Q000379:methods*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002050:Burkina Faso; D002645:Chickens / Q000254:growth & development*; D003433:Crosses, Genetic; D004044:Dietary Proteins / Q000008:administration & dosage*; D019587:Dietary Supplements; D004435:Eating; D002149:Energy Intake / Q000502:physiology*; D005260:Female; D008297:Male; D011897:Random Allocation; D012737:Sex Factors; D015430:Weight Gain
chemical_list: D004044:Dietary Proteins