Title:	Estimation of nitrogen and phosphorus excretion in different broiler chicken strains and sexes.
Authors:	DOURADO, L. R. B. SILVA, M. da C. M. da GAIO, P. de C. SOUSA, I. S. CARVALHO, F. L. de A. AZEVEDO, D. M. M. R. NASCIMENTO, D. C. N. do BIAGIOTTI, D. MARCADO, S. M. PIMENTA, J. L. L. de A.
Affiliation:	LEILANE ROCHA BARROS DOURADO, UNIVERSIDADE FEDERAL DO PIAUÍ; MELINA DA CONCEIÇÃO MACÊDO DA SILVA, UNIVERSIDADE FEDERAL DO PIAUÍ; PEDRO DE CARVALHO GAIO, UNIVERSIDADE ESTADUAL DE SÃO PAULO; IARA SILVA SOUSA, UNIVERSIDADE FEDERAL DO PIAUÍ; FRANCISCA LUANA DE ARAÚJO CARVALHO, UNIVERSIDADE FEDERAL DO PIAUÍ; DANIELLE MARIA MACHADO RIBEIRO AZEVEDO, CPAMN; DÁPHINNE CARDOSO NAGIB DO NASCIMENTO, UNIVERSIDADE FEDERAL DO MARANHÃO; DANIEL BIAGIOTTI, UNIVERSIDADE FEDERAL DO PIAUÍ; SIMARA MARCIA MARCADO, UNIVERSIDADE ESTADUAL DE MARINGÁ; JOSÉ LUIZ LEONARDO DE ARAÚJO PIMENTA, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO.
Date Issued:	2026
Citation:	Poultry, v. 5, p. 22, Mar. 2026.
Description:	Broiler production efficiency depends on the capacity of different strains to utilize nutrients and minimize environmental losses. This study aimed to quantify the excretion and digestibility of dry matter, nitrogen, and phosphorus in Cobb 500, Ross 308, and Hubbard Flex strains at different ages under Southwest Piauí conditions. A total of 300 broilers of both sexes were distributed in a 3 × 2 factorial design (3 strains × 2 sexes) with five replicates, totaling 30 experimental units. The six-week trial included adaptation periods, excreta collection, and feed intake control each week. Dry matter, nitrogen, and phosphorus were analyzed in diets and excreta to calculate intake, excretion, and retention coefficients (DMR, NR, PR). Interactions between sex and strain were observed after 25 days for some variables. Males excreted 10.21% more phosphorus than females, and strain effects were mainly observed for phosphorus excretion, with Hubbard exhibiting lower excretion in the 32–35-day phase, Cobb presenting the highest, and Ross demonstrating intermediate excretion. Variations between sexes were observed within strains across ages. These results demonstrate that nutrient utilization is influenced by both strain and sex, highlighting the need for tailored nutritional strategies to improve feed efficiency and reduce environmental impact in broiler production.
Thesagro:	Frango de Corte Linhagem Excreção Nitrogênio Fósforo Matéria Seca Consumo Alimentar Ração Crescimento
NAL Thesaurus:	Broiler chickens Excretion Nitrogen Phosphorus Nutrient retention Dry matter intake Nitrogen balance Feed intake Growth and development
DOI:	https://doi.org/10.3390/poultry5020022
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPAMN)