Performance and economic analysis oftwo beef cattle genetic groups fed different nutritional strategies.

• Autor(a) principal: SANTOS, Rowberta Teixeira dos
• Data de Publicação: 2020
• Outros Autores: OLIVEIRA, Lorena Martins, RODRIGUES, Matheus Silva, WANDER, Alcido Elenor, CARVALHO, Eduardo Rodrigues de
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRA
• Texto Completo: http://repositorio.ufra.edu.br/jspui/handle/123456789/1598
• topic: Bovinos de corte; Angus; Bovinos - Dietas balanceadas; Gado Nelore; Feedlot; Cost; Nellore

Genetic resources and well-balanced diets are relevant for improving the performance and profitability of beef cattle finished in feedlots. The objective of the present paper was to determine the performance and economic analysis of36 non-castrated males (18 Nellore and 18 F1 Angus × Nellore) fed diets containing either fixed or variable nutritional levels. Animals were fedad libitum once a day. Dry matter intake (DMI) was determined daily by the difference between feed offered and feed refused. Body weight (BW) was recorded every two weeks after a twelve-hour solid fasting. Data ofeconomic analysis (diet cost, feeding cost, average productivity, average cost, marginal productivity, marginal cost, total revenue, profit, and marginal revenue) were standardized in 14-day intervals likewise BW recording. The experimental design was completely randomized in a factorial scheme 2 × 2 × 2 (two genetic groups, two diets, and two housing types). F1 Angus × Nellore animals increased (p <0.05) DMI, BW, hot carcass weight, total revenue, and profit in comparison with Nellore animals. Conversely, Nellore had a lower (p <0.05) feeding cost and average cost compared with F1 Angus × Nellore. No response (p > 0.05) ofdiet (fixed or variable) was detected on performance and economic indicators; therefore the use of a variable diet is not recommended for beef cattle feeding. F1 Angus × Nellore may be indicated in feedlot finishing systems with a high supply of forage and dietary feeds, whereas Nellore may be recommended in feedlot finishing systems with certain limitations for forage and grain production.