Details

Autor(en) / Beteiligte

• Sabella Acedo, T
• Goulard, R
• Nunes de Gouvea, V
• de Souza Floriano Machado de Vasconcellos, G
• Roberto Leme, P
• Saran Netto, A
• da Luz e Silva, S

Titel

PSXIV-24 Effect of essential oils and exogenous enzyme on adaptation period of cattle fed different roughage sources

Ist Teil von

• Journal of animal science, 2018-12, Vol.96 (suppl_3), p.441-442

Ort / Verlag

US: Oxford University Press

Erscheinungsjahr

2018

Link zum Volltext

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• Abstract Eighty eight Nellore bulls (358 ± 38.5kg Body weight - 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) during feedlot adaptation period. Animals were adapted to the diets during 19-d, starting with 20% of physically effective NDF, gradually decreased to 10%. Final diets contained 0.3% urea, 4% mineral and vitamin mixture, 5.5% soybean meal, corn grain (70.7 and 78.2% for CS and SB diets, respectively) and 19.5% of CS or 12% of SB. BW, dry matter intake (DMI), average daily gain (ADG) and feed efficiency (G:F) were evaluated. Data were analyzed using the Mixed procedure of SAS considering roughage source, feed additives and interaction as fixed and block as random effects. There was an interaction between roughage sources and feed additives for DMI (P=0.0323) and G:F (P=0.0335). Animals fed CRINA-Rumistar and CS had higher DMI than those fed SB (10.7 vs. 6.7 kg PPP=0.0884), when compared to SB. Higher final BW (384.4 vs 369.4 kg; P=0.0057) and ADG (1.215 vs 0.656 kg/d; P=0.0005) was observed in animals fed CRINA-Rumistar than those fed MON. CRINA-Rumistar is an effective substitute of the MON, regardless of roughage source, during adaptation period.