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Revista Colombiana de Ciencias Pecuarias
versão impressa ISSN 0120-0690versão On-line ISSN 2256-2958
Resumo
RAMOS-SANTOS, Fabiana et al. The proportion of fine particles in pelleted diets does not affect the performance of slow-growing broiler chickens. Rev Colom Cienc Pecua [online]. 2021, vol.34, n.2, pp.84-94. Epub 21-Jun-2022. ISSN 0120-0690. https://doi.org/10.17533/udea.rccp.v34n2a01.
Background:
The slow-growing chicken strains have particular nutritional and digestive needs, so they may digest pelleted feeds differently compared to commercial strains.
Objective:
To evaluate performance, digestibility, serum biochemical profile, digestive morphometry, carcass and cut yields of slow-growing broiler chickens fed pelleted feed with different concentrations of fine particles.
Methods:
A total of 180 slow-growing broiler chicks (Isa Label strain) aged one day were used. The animals were distributed in a completely randomized design with a 2 x 3 factorial scheme (Sex: male or female; Proportion of fine particles: 0, 50, or 100%), with six repetitions of five birds/cage. The birds received water and feed ad libitum during the 28-day experimental period.
Results:
The proportion of fine particles did not affect the metabolic, digestive or productive variables evaluated. Males showed better overall performance, while females produced better thigh and liver yields.
Conclusion:
The proportion of fine particles in pelleted feeds did not affect productive or metabolic parameters. Thus, improving pellet quality for slow-growing broilers during the initial rearing phase may not be justified.
Palavras-chave : alternative production; broiler chickens; digestibility; digestive development; feed fines; Isa Label; pelleted feed; performance; pellet quality; poultry; serum biochemistry.