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Dimensional relationship of selected broiler parts

Dimensional relationship of selected broiler parts

Poultry Science 64(2): 318-327

Studies were conducted to determine the dimensional relationships of breasts, drumsticks and thighs of 45-, 49-, 52- and 56-day-old male and female broilers from different genetic crosses. Weights and measurements were made and in some cases converted to ratios and percentages to facilitate comparisons. Part weight:length ratios were demonstrated to be accurate measures of changes. Older birds and males had larger ratios, indicating more weight/unit length. Genetic cross differences were statistically significant in some cases. Part weight:length ratios were correlated with part weight and prediction equations were calculated. Breast weight:length ratio was 6.66 + 0.54x, drumstick weight:length ratio = 1.92 + 0.064x and thigh weight:length ratio = 3.04 + 0.093x with correlation coefficients of 0.95, 0.95 and 0.96, respectively. Breasts were 1.7-fold as long as they were wide, no differences were found attributable to age or sex and a genetic cross difference was found only in study 3. Drumsticks were > 2-fold as long as they were wide. In studies 1 and 2, no difference in drumsticks was found attributable to age, sex or genetic cross, but in study 3, sex and genetic crosses produced differences. Thigh length:width ratios ranged from 0.82-1.45; and age, sex and genetic cross differences were found. No significant differences attributable to age, sex or genetic cross were found when part lengths were expressed as a percentage of keel length. Breast length was 136%, drum length was 115.5% and thigh length was 81.3% of keel length.

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Accession: 001336707

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DOI: 10.3382/ps.0640318

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