Data/hora: 12/06/2024 07:39:12

Biblioteca(s): | Embrapa Gado de Corte.
Data corrente: | 06/12/2023
Data da última atualização: | 07/12/2023
Autoria: | SILVA, M. G. P. DA; NEVES, A. P.; MONTAGNER, D. B.; ÍTAVO, L. C. V.; BONIN, M. DE N.; MARSON, B.; GOMES, R. da C.
Afiliação: | MANOEL GUSTAVO PARANHOS DA SILVA, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL; ANDREI PEREIRA NEVES, SERVIÇO NACIONAL DE APRENDIZAGEM RURAL; DENISE BAPTAGLIN MONTAGNER, CNPGC; LUÍS CARLOS VINHAS ÍTAVO, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL; MÁRCIO DE NADAI BONIN, COMÉRCIO DE NUTRIÇÃO ANIMAL; BRUNO MARSON, COMÉRCIO DE NUTRIÇÃO ANIMAL; RODRIGO DA COSTA GOMES, CNPGC.
Título: | Powder and agglomerated free-choice minerals for grazing cattle: animal responses and chemical and physical alterations of the mineral mixture.
Ano de publicação: | 2023
Fonte/Imprenta: | Archives of Animal Nutrition, 2023.
DOI: | https://doi.org/10.1080/1745039X.2023.2281809
Idioma: | Inglês
Notas: | Published online: 26 Nov 2023.
Conteúdo: | ABSTRACT - The aim was to evaluate the animal response and the chemical and physical changes of free-choice mineral mixtures fed to grazing cattle. Growing beef cattle were fed either powder (POW) or agglomerated (AGL) mineral mixtures in three different experiments (Exp.), carried out in pastures of Brachiaria grass. In Exp. 1 and 2, the mineral mixtures were disposed in unsheltered troughs (POWun vs. AGLun), being delivered once (D0, Exp.1) or twice (D0 and D8, Exp. 2), throughout 14-day periods. In Exp. 3, POWun and AGLun were additionally compared to POW in sheltered troughs (POWshe), and the mineral mixtures were disposed in D0, throughout 21-day periods. Non-consumed supplement was removed and sampled on D14 (Exp. 1 and 2) or D21 (Exp. 3). Evaluations included average daily body weight gain (ADG), daily disappearance of the supplement (DSD), penetration force of the supplement mass, faecal chemical composition and serum levels of Ca, P and Mg. In Exp. 1, no effects were observed on ADG and faecal mineral concentrations, however, changes in mineral concentrations and a 40% reduction in Na concentration in the supplement were observed, compared to the initial concentration. AGLun had a lower penetration force. In Exp. 2, there were no effects on DSD and faecal mineral concentrations. POWun showed a smaller reduction in Na content compared to AGLun, and AGLun showed lower penetration force. In Exp. 3, the treatments did not affect ADG, but there was a trend towards higher DSD and serum phosphorus (P) concentration for AGLun (p = 0.08). Higher faecal Na concentration was observed for AGLun and higher Na concentration occurred in nonconsumed mixture of POWshe. Mineral supplements offered in uncovered troughs showed altered chemical and physical characteristics, with possible effects on supplement intake. However, the general changes are unlikely to alter animal performance.
Thesagro: | Gado; Ganho de Peso; Mineralização; Mistura Mineral; Nutriente Mineral; Suplemento Mineral.
Thesaurus Nal: | Cattle; Mineralization; Pastures; Vitamin-mineral supplements; Weight gain.
Categoria do assunto: | --
Registro original: | Embrapa Gado de Corte (CNPGC)
Exemplares: | CNPGC - (17944-1) - UPC - AP - DD -  -  -  - DIS