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Silva S JC, Correa L GA, Mayorga M OL, Duran C EN, Portilla P D, Diaz T FA, Granja-Salcedo YT, Valencia E DM. Effect of marker dosage frequency and spot fecal sampling frequency in the prediction accuracy of fecal output using chromic oxide and titanium dioxide in grazing BON steers. Trop Anim Health Prod 2021; 53:448. [PMID: 34533661 DOI: 10.1007/s11250-021-02902-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 09/10/2021] [Indexed: 11/24/2022]
Abstract
This study aimed to evaluate the effect of two marker dosage frequencies and two spot fecal sampling frequencies on the variability of fecal output estimation and fecal recovery rate in grazing Blanco Orejinegro (BON) steers with chromium (Cr) or titanium (Ti) as external markers. Four steers (230.5 ± 14.4 kg BW) were used in a 4 × 4 Latin square design in a split-plot arrangement with two markers: Cr or Ti, two marker dosage frequencies: 10.0 g Cr2O3 or TiO2/steer once daily (DF1) or 5.0 g Cr2O3 or TiO2/steer twice daily (DF2), and two fecal sampling frequencies: spot sampling once daily (SF1) or spot sampling twice daily (SF2). Steers were equipped with fecal collection bags to evaluate the actual fecal output (FOR). Fecal marker concentration (FMC) was affected by marker dosage frequency × fecal sampling frequency interaction (P = 0.032): SF1DF1 allowed higher FMC (2.26 g/kg DM) than SF2DF1 (1.95 g/kg DM). Chromium marker allowed higher estimated fecal output (FOe) values when compared to FOR (P < 0.001). Both Ti mean and SD bias (+ 0.074 ± 0.160 kg) were lower than Cr mean and SD bias (+ 0.312 ± 0.272 kg). The Ti fecal output prediction showed lower both RSR (0.586 vs 1.401) and MSPE (0.029 vs 0.167) than Cr prediction. The titanium external marker allowed fecal output estimation with more accuracy in grazing beef cattle trials. A protocol including a once-daily marker dosage associated with a once-daily fecal sampling is plausible, allowing good fecal recovery rates and accurate fecal output estimation.
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Affiliation(s)
- Juan Camilo Silva S
- Programa de Medicina Veterinaria Y Zootecnia, Facultad de Medicina Veterinaria Y Ciencias Afines, Corporación Universitaria del Huila - CORHUILA, Neiva, Colombia
| | - Guillermo Antonio Correa L
- Departamento de Ingeniería Agronómica, Facultad de Ciencias Agrarias, Universidad Nacional de Colombia, Medellín, Antioquia, Colombia
| | - Olga Lucía Mayorga M
- Centro de Investigación Tibaitatá, Corporación Colombiana de Investigación Agropecuaria - Agrosavia, Km. 14, vía Mosquera - Bogotá, Mosquera, Cundinamarca, Colombia
| | - Erika Natalia Duran C
- Centro de Investigación Tibaitatá, Corporación Colombiana de Investigación Agropecuaria - Agrosavia, Km. 14, vía Mosquera - Bogotá, Mosquera, Cundinamarca, Colombia
| | - Danilo Portilla P
- Centro de Investigación El Nus, Corporación Colombiana de Investigación Agropecuaria - Agrosavia, Autopista Medellín - Cisneros - Puerto Berrio, San Roque, Antioquia, Colombia
| | - Felipe Andrés Diaz T
- Centro de Investigación El Nus, Corporación Colombiana de Investigación Agropecuaria - Agrosavia, Autopista Medellín - Cisneros - Puerto Berrio, San Roque, Antioquia, Colombia
| | - Yury Tatiana Granja-Salcedo
- Centro de Investigación El Nus, Corporación Colombiana de Investigación Agropecuaria - Agrosavia, Autopista Medellín - Cisneros - Puerto Berrio, San Roque, Antioquia, Colombia
| | - Diana Marcela Valencia E
- Centro de Investigación El Nus, Corporación Colombiana de Investigación Agropecuaria - Agrosavia, Autopista Medellín - Cisneros - Puerto Berrio, San Roque, Antioquia, Colombia.
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Jackson AE. In this issue - November 2018: Anaesthesia standards of care · Novel technique for patella luxation · High blood lead in captive Tasmanian devils · Baseline biochemical parameters in eastern water dragons · controlled-release devices for chromium and zinc in alpacas · Magnetic resonance vs radiographic imaging in equine navicular bone partition · Shunt morphology and surgical management in dogs. Aust Vet J 2019; 96:411-412. [PMID: 30370592 DOI: 10.1111/avj.12763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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