Abstract
An experiment was conducted to evaluate the performance of crossbred growing chickens (Rhode Island Red × 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).
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Abbreviations
- AA:
-
amino acids
- ADG:
-
average daily gain
- ASH:
-
total ash
- CF:
-
crude fibre
- CP:
-
crude protein
- DM:
-
dry matter
- EE:
-
ether extract
- FCR:
-
feed conversion ratio
- FCS:
-
feed costs/kg weight gain
- LSM:
-
least-squares mean
- ME:
-
metabolizable energy
- NFE:
-
nitrogen-free extract
- OM:
-
organic matter
- TME:
-
true metabolizable energy
- SFR:
-
scavenging feed resources
- USD:
-
US dollar
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Pousga, S., Boly, H., Lindberg, J.E. et al. Effect of supplementation on the feed intake and performance of confined and scavenging crossbred growing chickens in Burkina Faso. Trop Anim Health Prod 38, 323–331 (2006). https://doi.org/10.1007/s11250-006-4395-3
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DOI: https://doi.org/10.1007/s11250-006-4395-3