Results 21 to 30 of about 1,071 (166)

Structural Basis of Sequential Enantioselective Epoxidation by a Flavin-Dependent Monooxygenase in Lasalocid A Biosynthesis. [PDF]

Angew Chem Int Ed Engl
Lsd18 is a flavin‐dependent monooxygenase from Streptomyces lasalocidi that performs two enantioselective epoxidations during lasalocid A biosynthesis. X‐ray crystal structures of Lsd18 bound to a substrate and product analogue illuminate how this enzyme performs multiple epoxidations on the same substrate molecule and how it controls stereoselectivity.
Wang Q, Deng Y, Viera D, Liu X, Liu N, Hu Y, Hu X, Wei H, Zhou Q, Lan T, He W, Chen X, Kim CY.   +12 more
europepmc   +3 more sources

Experimental determination of comparative sensitivity of eimeria to chemotherapeutic preparations and phytobiotics [PDF]

BIO Web of Conferences, 2022
The sensitivity of the organism of broiler chickens artificially infested with a mixture of three types of eimeria to anti-eimeria drugs used in the Belgorod region was determined.
Yakovleva Inessa
doaj   +1 more source

Safety and efficacy of a feed additive consisting of <i>Bacillus velezensis</i>NRRL B-67647, <i>Bacillus pumilus</i>NRRL B-67648 and <i>Bacillus licheniformis</i>NRRL B-67649 (Microsaf®) for chickens for fattening, other poultry for fattening and ornamental birds (S.I. Lesaffre). [PDF]

EFSA J
Abstract Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of Microsaf® when used as a feed additive for chickens for fattening, other poultry for fattening and ornamental birds.
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Villa RE, Azimonti G, Bonos E, Christensen H, Durjava M, Dusemund B, Gehring R, Glandorf B, Kouba M, López-Alonso M, Marcon F, Nebbia C, Pechová A, Prieto-Maradona M, Röhe I, Theodoridou K, Mayo B, Anguita M, Cionci NB, Brozzi R, Innocenti ML, Ortuño J, Valeri P, García-Cazorla Y.   +24 more
europepmc   +2 more sources

Copper(II), a Peculiar Metal Ion for Complexation With Monensin A Ionophore. [PDF]

Chemistry
Copper(II) forms three chiral and EPR‐active complexes with monensinate A in methanol. Beside the bis [CuL2] and mono [CuL]+ species, the new dinuclear construct [Cu2L]3+ exhibits an [ML]+‐type and a metal salt‐type copper(II) centers weakly bound to each other through counter ion(s) and thus, being magnetically independent.
Kis ML, Hajdu B, Jakusch T, Kele Z, Dorkov P, Kukeva R, Pantcheva I, Gyurcsik B.   +7 more
europepmc   +2 more sources

EFFECT OF LASALOCID SUPPLEMENTATION ON SOME METABOLIC AND ENDOCRINE PARAMETERS IN TURKEY POULTS. [PDF]

Assiut Veterinary Medical Journal, 2006
SUMMARY Lasalocid, a carboxylic ionophore antibiotic, is used frequently in poultry feeds as a coccidiostat, however the present study centered on its role as growth promoter and in steroidogenesis.
F.A.R. SAWIRESS, M.Z. ATTIA, SOHAIR Y. SALEH   +2 more
doaj   +1 more source

INFLUENCE OF DIETARY LASALOCID ON SOME SERUM CHARACTERSTICS AS WELL AS SEMEN QUALITY AND FREEZABILITY IN ADULT BARKI RAMS [PDF]

Assiut Veterinary Medical Journal, 1997
To study the effect of dietary lasalocid on serum insulin, cholesterol, Ca, P, Mg, Zn and Cu as well as semen quality and freezability, a number of six mature Barki rams (about 26 months of age and 46.5kg) were used during the periods of pretreatment ...
M. A. HEGAZY, MARY G. ABDEL MALK, MAHA S. ZIADA   +2 more
doaj   +1 more source

Lasalocid Toxicosis in Neonatal Calves [PDF]

Journal of Veterinary Diagnostic Investigation, 1998
1. Asakawa Y, Toyota M, Ishida T: 1988, Biotransformation of 1,4cineole, a monoterpene ether. Xenobiotica 18:1129–1134. 2. Carson CF, Riley TV: 1993, Antimicrobial activity of the essential oil of Melaleuca alternifolia. Lett Appl Microbiol 16:49–55. 3.
J E, Benson, S M, Ensley, T L, Carson, P G, Halbur, B H, Janke, W J, Quinn   +5 more
openaire   +2 more sources

The co‐administration effects of florfenicol and lasalocid on performance, biochemical and pathological parameters of muscle, heart, liver, kidney and sciatic nerve in broiler chickens

Veterinary Medicine and Science, 2022
The study aimed to examine the effect of simultaneous application of florfenicol and lasalocid on the performance and vital organ function of chickens. For this, 300 chicks were divided into four groups. Group one to three received florfenicol, lasalocid
Majid Gholami‐Ahangaran, Maryam Karimi‐Dehkordi, Abdolrasul Namjoo, Hasan Shojaei, Asiye Ahmadi‐Dastgerdi   +4 more
doaj   +1 more source

Lasalocid awareness and sampling in Scotland [PDF]

International Journal of Environmental Health Research, 2010
Lasalocid is an ionophore antibiotic extensively used as a coccidiostat in poultry production. Lasalocid should not be fed to egg-laying hens as it accumulates in the eggs, and residues have often been found in eggs. Other ionophores are toxic to humans, but the exact level of lasalocid toxicity to humans has not been established. Approximately 250 egg
Wong, R.Y.P., Roxburgh, J.W.
openaire   +4 more sources

INFLUENCE OF DIETARY MONENSIN AND LASALOCID ON AGE AND WEIGHT OF BARKI RAM AND EWE-LAMBS AT PUBERTY ( [PDF]

Assiut Veterinary Medical Journal, 1997
A number of 18 male and 15 female weaned Barki lambs were used in two experiments to evaluate the comparative effect of dietary monensin or lasalocid on growth rate, rumen fermentation pattern, feed efficiency as well as age and weight at puberty.
M.A. HEGAZY, A.N. ELIAS
doaj   +1 more source