Results 51 to 60 of about 2,024 (189)

In vitro effect of pH on resistance of ruminal bacteria to intracellular potassium depletion, and effect of pH and ionophores on ammonia and microbial protein production Efeito do pH in vitro sobre a resistência de bactérias do rúmen à perda de potássio intracelular e efeito do pH e de ionóforos sobre a produção de amônia e proteína microbiana

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2005
Ruminal fluid from steers fed on pasture was incubated with artificial media at pH 5.5 and 7.0 in two experiments. In the first, the effect of monensin level on resistance of ruminal bacteria to potassium depletion was evaluated; in the second, effects ...
W.M. Leopoldino, R.P. Lana, A.C. Borges, H.C. Mantovani, R.M.A. Teixeira, J.S. Oliveira, A.R. Jaremtchuk, E.C. Eifert, R.G.R. Martins   +8 more
doaj   +1 more source

Cylinder Plate Assay for Lasalocid Sodium

Journal of AOAC INTERNATIONAL, 1974
Abstract A microbiological assay method is described for the determination of the coccidiostat lasalocid sodium in premixes and finished poultry feeds. Premixes are extracted with absolute methanol and diluted to assay range with 25% methanol in the final dilution.
J M, Scheiner, W M, Cort, J, Chen
openaire   +2 more sources

P450 Enzyme LyoI Performs Hydro‐2,2′‐Bifuran Oxidation in the Polyether Ionophore Lysocellin

Angewandte Chemie, Volume 137, Issue 43, October 20, 2025.
In a study of the biosynthesis of the polyether ionophore lysocellin, the P450 enzyme LyoI was found to catalyze a rare oxidation of a hydro‐2,2′‐bifuran moiety to its hemiketal form. The oxidation was identified as the key for unlocking the bioactivity of lysocellin.
Michelle H. Rasmussen, Søren L. B. Møller, Esben B. Svenningsen, Thomas Tørring, Thomas B. Poulsen   +4 more
wiley   +2 more sources

Kineochelins—A New Group of Siderophores From an Antarctic Bacterium

Microbial Biotechnology, Volume 19, Issue 6, June 2026.
Genome‐guided analysis of an Antarctic Actinokineospora strain led to the discovery of kineochelins, a new group of siderophores involved in iron sequestration and microbial competition. Kineochelin production inhibits co‐occurring bacteria and clinically relevant yeasts, highlighting Antarctic microorganisms as promising sources of bioactive natural ...
Stanislava Kralova, Peter Spacek, Johannes Gafriller, Matej Bezdicek, Viktoria Medvedcova, Joana Séneca, Jay Osvatic, Ulrike Grienke, Thomas Rattei, Olga N. Sekurova, Sergey B. Zotchev, Martin Zehl, Alexander Loy   +12 more
wiley   +1 more source

Intoxicação por antibióticos ionóforos em animais Ionophore poisoning in animals

Pesquisa Veterinária Brasileira, 2009
O uso terapêutico de antibióticos ionóforos em medicina veterinária difundiu-se muito nos últimos anos, com conseqüente aumento no risco de intoxicação em animais.
Vivian Assunção Nogueira, Ticiana Nascimento França, Paulo Vargas Peixoto   +2 more
doaj   +1 more source

Suplementação de bovinos em pastagens de Coastcross (Cynodon dactylon (L.) Pers) no inverno Cattle supplementation on Coastcross pasture (Cynodon dactylon (L.) Pers) during the winter

Revista Brasileira de Zootecnia, 2004
O experimento foi realizado no município de Luiziana, noroeste do Estado do Paraná, no período de junho a outubro de 2000. Foram utilizados 24 novilhos inteiros, com nove meses de idade e peso inicial médio de 223 kg, pertencentes a dois grupos genéticos
Paulo Emílio Fernandes Prohmann, Antonio Ferriani Branco, Ulysses Cecato, Clóves Cabreira Jobim, Kátia Cylene Guimarães, Rosemeri Aparecida Ferreira   +5 more
doaj   +1 more source

Efeito dos ionóforos e do balanço eletrolítico da dieta sobre o desempenho e a incidência de discondroplasia tibial em frangos de corte na fase inicial Effect of ionophores and acid-base balance on performance and incidence of tibial dyschondroplasia in 21-d old broiler chicks

Revista Brasileira de Zootecnia, 2004
O objetivo do trabalho foi avaliar o efeito dos ionóforos e balanços eletrolíticos da dieta (BED) no desempenho e na incidência de discondroplasia tibial (DT) em frangos de corte de 1 a 21 dias de idade.
José Rodrigo Galli Franco, Alice Eiko Murakami, Márcia Izumi Sakamoto, Elias Nunes Martins, Ivan Moreira, Marli Aparecida dos Santos Pereira   +5 more
doaj   +1 more source

Effect of Lasalocid on the sexual development of beef heifers [PDF]

, 1984
Lasalocid (Bovatec®) improved daily gain of replacement heifers by .20 lb per day and reduced the time to first heat in heifers fed on a lower level of energy, but had no significant affect in the higher energy group.
Riley, Jack G., Jack G. Riley, Corah, L., L. Corah   +3 more
core   +1 more source

Heterocyclic‐Fused Squaramides: Anionophores With Antimicrobial Activity

ChemBioChem, Volume 27, Issue 5, 13 March 2026.
Supramolecular medicinal chemistry has allowed for the development of novel drugs for the treatment of cystic fibrosis, and in the fight against cancer. However, little has been done to develop these as antimicrobial agents. Here, we describe the development of novel chemical tools to further develop supramolecular methods to combat the global plight ...
Luke Edward Brennan, Chris Samuel Hawes, Kevin Kavanagh, Robert Brian Peter Elmes   +3 more
wiley   +1 more source

Avaliação de ionóforos pela técnica da perda do potássio celular e produção de gases in vitro Ionophores evaluation by intracellular potassium depletion and in vitro gas production

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2007
Dois estudos foram realizados com vacas lactantes utilizadas como unidade experimental e doadoras de líquido ruminal, sendo as populações de bactérias utilizadas para avaliar a ação de níveis crescentes de lasalocida e monensina na resistência à perda de
W.M. Leopoldino, R.P. Lana, E.C. Eifert, P.B. Arcuri, H.C. Mantovani, R.G.R. Martins   +5 more
doaj   +1 more source