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Straight-run vs. sex separate rearing for two broiler genetic lines Part 2: Economic analysis and processing
M J Da Costa1, G Colson1, T J Frost2
1University of Georgia, Athens 30606.
Poultry Science
|March 25, 2017
Summary
Sex-separated broiler rearing significantly boosts profitability and bird uniformity, especially for Ross 708 genetics. This method increases income and reduces variability, proving beneficial even with high feed costs.
Area of Science:
- Animal Science
- Poultry Production
- Agricultural Economics
Background:
- Traditional broiler rearing often mixes sexes (straight-run), potentially leading to performance variability.
- Genetic lines like Ross 308 and Ross 708 exhibit different growth characteristics.
- Optimizing broiler production involves managing factors like sex, genetics, diet, and market weight.
Purpose of the Study:
- To evaluate the economic and performance impacts of sex-separate versus straight-run broiler rearing.
- To compare these effects across two broiler genetic lines (Ross 308 and Ross 708).
- To assess the influence of rearing systems on bird uniformity and processing plant efficiency.
Main Methods:
- 1,344 broiler chicks (Ross 308 and Ross 708) were reared under sex-separate or straight-run conditions.
- Birds were subjected to three dietary phases (starter, grower, finisher) over 48 days.
- Performance metrics (body weight, feed intake) and carcass yield were evaluated; economic returns were modeled across various scenarios.
Main Results:
- Sex-separated rearing generated additional weekly income ranging from $48,824 to $330,300.
- Gains from sex separation were more pronounced in Ross 708 broilers and under high feed price conditions.
- Straight-run rearing resulted in 9.1–16.6% fewer birds meeting target marketing weights due to increased variability.
Conclusions:
- Sex separation enhances company profitability and bird uniformity, leading to potential processing plant benefits.
- The economic advantages of sex separation are significant and influenced by genetic line, market targets, and feed costs.
- Implementing sex-separate rearing is a strategic approach to optimize broiler production efficiency and financial returns.
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