213 Feeding essential oils and α-amylase or its association with 25-hydroxy-vitamin-D3 improves productive performance by feedlot cattle. (30th November 2020)

• Record Type: Journal Article
• Authors: Niehues, Maria Betania; Perdigão, Alexandre; Valério de Carvalho, Victor V; Acedo, Tiago S; Vasconcellos, Guilherme S F M; Tamassia, Luis Fernando; Martins, Cyntia L; Millen, Danilo D; Arrigoni, Mário B
• Is Part Of: Journal of animal science. Volume 98(2020)Supplement 4
• Page Start: 160
• Page End: 161
• Publication Date: 2020-11-30
• Subjects: Feed additives -- finishing phase -- carcass yield -- vitamins; Livestock -- Periodicals; Livestock; Electronic journals; Periodicals; 636.005
• DOI: 10.1093/jas/skaa278.294
• Languages: English
• ISSNs: 0021-8812

Abstract

Abstract: Our objective was to evaluate the effects of associating feed additives on performance of finishing cattle when fed a high-concentrate diet for 105 days. Twenty-four Angus-Nellore crossbred bulls (iBW, 456 ± 10.04 kg; age, 18 mo) were randomly allocated to three treatments with eight replicates per treatment (animal as experimental unit). The treatments were: 1) Control (MON) - Sodium Monensin, 26 mg/kg DM; 2) Crina® RumistarTM (CR) - a blend of essential oils, 90 mg/kg DM + exogenous α-amylase, 560 mg/kg DM) and 3) CR + HyD® (25-hydroxy-vitamin-D3 at 1 mg/animal/d). The DM intake and animalsˈ weight variables were assessed individually, by using the Intergado® electronic system and the Bosch® Precision Livestock platform placed in the feedlot pen, respectively. Data were analyzed using the Mixed procedure of SAS and means comparison evaluated by Tukey test at P < 0.05. The initial BW was used as a covariate when significant. Feeding CR and CR+HyD increased DMI (13.18 and 12.82 kg vs. 10.77 kg P < 0.01) and tended to increase ADG (1.94, 1.92 vs. 1.68kg/d, P = 0.07) and final BW (654, 652 vs. 628 kg, P = 0.08) compared with MON. Likewise, animals fed CR and CR+HyD had greater carcass ADG (1.38, 1.41 vs. 1.14 kg/d, P < 0.01), and HCW (368.53 and 371.87 vs. 344.13 kg; P < 0.01) compared to MON. In addition, feeding CR+HyD increased the dressing percentage in 2.1 percent points compared with MON (57.4 vs. 55.3%; P < 0.03). The G:F and the biological efficiency were similar among treatments (P = 0.50). We conclude that including Crina® RumistarTM +HyD® can be used as a tool to increase carcass production by feedlot cattle.