PMID- 7877935 OWN - NLM STAT- MEDLINE DCOM- 19950403 LR - 20200313 IS - 0032-5791 (Print) IS - 0032-5791 (Linking) VI - 73 IP - 12 DP - 1994 Dec TI - Carcass composition and yield of 1991 vs 1957 broilers when fed "typical" 1957 and 1991 broiler diets. PG - 1795-804 AB - Whole carcass yield and the yield of parts (i.e., wings, saddle and legs, Pectoralis major, Pectoralis minor, breast skin, rack, abdominal fat pad, heart, and lungs), as well as whole carcass analysis for fat, moisture, and ash, were measured in the 1957 Athens-Canadian Randombred Control (ACRBC) and in the 1991 Arbor Acres (AA) feather-sexable strain, when fed "typical" 1957 and 1991 diets. Using the average of both sexes, the carcass weights of the 1991 birds on the 1991 diets were 4.4, 3.9, and 3.5 times heavier than those from the 1957 ACRBC on the 1957 diet at 43, 71, and 84 d of age, respectively. Birds fed the 1991 diets had significantly heavier carcass weights than those fed the 1957 diets. Hot carcass yield of the AA broiler (mean of both sexes) was approximately 6 to 7% higher at the same age than for the ACRBC. Water uptake in the carcass (following a 60-min immersion in ice water) was approximately 2 to 2.5% higher in the ACRBC than in the AA broiler. Yield of saddle and legs as a percentage of live BW was about 4% higher in the AA than in the ACRBC. Dietary regimen did not affect the yield of saddle and legs. Males had 2 to 3% more saddle and legs than the females. The yield of total breast meat for the AA was approximately 3% higher (mean = 16.9%) than for the ACRBC over both sexes and all ages. Breast yield on the 1991 diets was approximately 1.2% higher for the AA than for the ACRBC. Females had slightly higher breast yield (1%) than males. The AA broiler had consistently heavier fat pads and higher percentage carcass fat at the same age and on the same diet than did the ACRBC. The percentage carcass fat was significantly higher on the 1991 vs the 1957 diet and in females vs males. The male-female difference in percentage carcass fat increased with age. Heart and lung size as a percentage of live BW were lower in the AA than in the ACRBC. FAU - Havenstein, G B AU - Havenstein GB AD - Department of Poultry Science, North Carolina State University, Raleigh 27695-7608. FAU - Ferket, P R AU - Ferket PR FAU - Scheideler, S E AU - Scheideler SE FAU - Rives, D V AU - Rives DV LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PL - England TA - Poult Sci JT - Poultry science JID - 0401150 SB - IM MH - *Animal Feed MH - *Animal Nutritional Physiological Phenomena MH - Animals MH - Body Composition/*genetics MH - Breeding/*methods MH - Chickens/*physiology MH - Female MH - Male EDAT- 1994/12/01 00:00 MHDA- 1994/12/01 00:01 CRDT- 1994/12/01 00:00 PHST- 1994/12/01 00:00 [pubmed] PHST- 1994/12/01 00:01 [medline] PHST- 1994/12/01 00:00 [entrez] AID - S0032-5791(19)52125-3 [pii] AID - 10.3382/ps.0731795 [doi] PST - ppublish SO - Poult Sci. 1994 Dec;73(12):1795-804. doi: 10.3382/ps.0731795.