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Weight of internal organs and carcase yield of early food restricted broilers

Susbilla, J.P., Frankel, T.L., Parkinson, G., Gow, C.B.
British poultry science 1994 v.35 no.5 pp. 677-685
broiler chickens, feed intake, restricted feeding, digestive tract, weight, feed conversion, compensatory growth, animal organs, lipid content, abdominal fat
1. Effects of food restriction on growth rate and relative growth rates of supply organs giver, heart, lungs and kidneys, digestive tract) and demand organs (breast, back, thighs, abdominal fat) of broiler chickens were studied. 2. Birds were restricted in intake to 50% (group FI 50) or 75% (group FI 75) of ad libitum from 5 to 11 d of age; all birds were fed ad libitum from 12 to 39 d of age. 3. Relative growth rates from 12 to 39 d of age of group FI 50 were higher (P < 0 05) than group FI 75 and control group. 4. No significant differences in food conversion ratio, carcass fat and abdominal fat between groups were observed. 5. At 12 d of age, relative weight of the empty digestive tract of group FI 50 was higher (P < 0.05) than that of the control group and group FI 75. 6. The increased weight of the empty digestive tract may have contributed to the ability of the chickens to achieve compensatory growth after the restriction period.