66 Effect of essential oil and exogenous enzyme on performance and carcass traits of finishing cattle fed different roughage sources
| Autor: | T Sabella Acedo, R Goulard, V Nunes de Gouvea, G de Souza Floriano Machado de Vasconcellos, P Roberto Leme, A Saran Netto, S da Luz e Silva |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Journal of Animal Science. 96:394-395 |
| ISSN: | 1525-3163 0021-8812 |
| Popis: | Eighty eight Nellore bulls (358 ± 38.5 kg BW) were used in a randomized block design with a 2 × 2 factorial arrangement to test two feed additives (MON - Sodium Monensin 26 mg/kg DM vs. CRINA-Rumistar - combination of blend of essential oils - 90 mg/kg DM + exogenous α-amylase - 560 mg/ kg DM; DSM Produtos Nutricionais Brasil S.A.) and two roughage sources (CS - corn silage vs SB - sugarcane bagasse). Animals were weighed after 14h of fasting (water and feed) and gradually adapted to the high grain diets, starting with 20% of physically effective NDF, gradually decreasing to 10% after 20-d. Final diets contained 0.3% of urea, 4% mineral and vitamin mixture, 5.5% of soybean meal, corn grain (70.7 and 78.2% for CG and SB diets, respectively) and 19.5% of CS or 12% of SB. Individual feed intake was recorded daily and carcass weight (CW), Longissimus muscle area (LMA) and backfat thickness (BFT) were measured after slaughter (day 104). Data were analyzed using the Mixed procedure of SAS considering roughage source, feed additives and interaction as fixed and block as random effects. No interaction between feed additives and roughage sources was observed. Animals fed CS had 9% higher ADG (P=0.0154), 20% higher DMI (P |
| Databáze: | OpenAIRE |
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