Data/hora: 09/06/2024 10:40:31

Provedor de dados: | Research in Agricultural & Applied Economics (AgEcon Searh)
País: | United States
Título: | Benefits of net feed intake in a large commercial feedlot
Autores: | Herd,   Robert M.; Arthur,   Paul F.; Dibley,   K.; Mula,   D.; Snelgar,   T.; Thompson,   J.
Data: | 2012-02-21
Ano: | 2011
Palavras-chave: | Net feed intake; Steers; Feedlot; Efficiency; Farm Management; Livestock Production/Industries.
Resumo: | This experiment investigated the benefits of feeding steers bred from parents known to be of high genetic merit for feed efficiency (HE; midparent net feed intake-estimated breeding value (NFI-EBV) ≤-0.3kg/day), medium efficiency (ME: midparent NFI-EBV &gt;-0.3 to 0.14 kg/day), or low efficiency (LE; midparent NFI-EBV ≥0.16kg/day). The steers were evaluated over a 251-day feeding period in a large commercial feedlot. Genetic superiority in NFI had a favourable impact on the commercial performance of Angus steers by reducing feed consumed with no adverse effect on final turnoff weight. Each HE steer consumed on average 2.60t of feed compared to 2.87t by the ME and LE steers, with no compromise in weight gain. The HE steers gained less subcutaneous ribfat during the feedlot period but marbling scores were not influenced by NFI, and dressing percentage was higher in the HE steers. The feed efficiency benefit was sustained for 251 days and showed that genetic improvement of feed efficiency will reduce feed costs in a large commercial feedlot.
Tipo: | Article
Idioma: | Inglês

Identificador:

1449-5937

http://purl.umn.edu/120913

Relação: | AFBM Journal&gt;Volume 08, Number 1, 2011
Formato: | 3