Data/hora: 30/05/2024 11:16:16

Biblioteca(s): | Embrapa Pecuária Sudeste.
Data corrente: | 17/08/2015
Data da última atualização: | 20/03/2023
Autoria: | GUSMAO, M. R.; ALVES, T. C.; LEMES, A. P.; BETTIOL, G. M.; PEDROSO, A. de F.; BARIONI JUNIOR, W.; OLIVEIRA, P. P. A.; GREGO, C. R.
Afiliação: | MARCOS RAFAEL GUSMAO, CPPSE; TERESA CRISTINA ALVES, CPPSE; AMANDA P. LEMES, UNESP/FCAV, JABOTICABAL, SP.; GIOVANA MARANHAO BETTIOL, CPPSE; ANDRE DE FARIA PEDROSO, CPPSE; WALDOMIRO BARIONI JUNIOR, CPPSE; PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE; CELIA REGINA GREGO, Embrapa Satellite Monitoring.
Título: | Sodium fluorescein as an internal tracer on the location of bovine urine patches in pastures.
Ano de publicação: | 2015
Fonte/Imprenta: | Grass and Forage Science, v. 71, p. 305-314, apr. 2015.
DOI: | 10.1111/gfs.12182
Idioma: | Inglês
Conteúdo: | Sodium fluorescein (SF) was evaluated and validated as an internal marker in cattle for the location of urine patches in pastures. Three trials were carried out aiming at the following: evaluating the effect of dilution and volume of application on SF fluorescence on the environment; testing dosages and duration of excretion of SF administered orally to cattle; and validating the methodology for SF use on the location of cattle urine patches in pastures. The marker was tested in beef cattle kept on pastures under three grazing systems: degraded pasture under extensive management (De), intensively managed dryland pasture with high stocking rate (Id) and intensively managed irrigated pasture with high stocking rate (Ii). Besides the localization of urination sites, the number of urinations/animal/d and the area covered by urine were also determined. The residue of SF remained fluorescent in the pasture foliage up to 34 h after urination events, allowing the location of urine patches by a black-light flashlight. There was no difference between grazing systems in the number of urine patches/animal/d during the rainy and dry seasons. The average number of urine patches was approximately 11/animal/d. As expected, the estimated volume and area covered by urine varied according to the stocking density. The chosen SF dose (50 mg kg?1 LW) did not adversely affect the animals when administered once daily during 2 d. However, the same SF dose administered during four consecutive days caused urinary disorder in the animal. The distribution of urine patches was spatially dependent on specific characteristics of the paddock.
Palavras-Chave: | Animal behaviour; Excreta patch; Internal tracer; Localization of urine.
Thesaurus Nal: | beef cattle; livestock.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Pecuária Sudeste (CPPSE)
Exemplares: | CPPSE - (23038-1) - UPC - AP - DD - PROCI-2015.00027 - GUS - 2015.00027 - DIS