Results 181 to 190 of about 2,614 (204)

Effect of Zeranol on Sexual Development of Crossbred Bulls

Journal of Animal Science, 1989
Three groups of 1/2 Simmental X 1/4 Brahman X 1/4 Hereford bull calves were used during two different years to study effects of zeranol on sexual development. At 154 d of age, half the calves were implanted with 36 mg zeranol and half, not implanted, served as controls.
R W, Godfrey, R D, Randel, F M, Rouquette   +2 more
openaire   +2 more sources

Effects of zeranol on protein turnover in L6 myotubes

Domestic Animal Endocrinology, 1987
Protein synthesis and degradation were measured in cultures of L6 myotubes to determine the direct anabolic activity of zeranol on muscle. Zeranol, dexamethasone, insulin and zeranol-dexamethasone combination, at various concentrations from 10(-8) to 10(-6) M, were added to cultures at either 18 hr prior to or at the beginning of a 6 hr synthesis or ...
R A, Roeder, J M, Gunn
openaire   +2 more sources

Radioimmunoassay of the anabolic agent zeranol I. Preparation and properties of a specific antibody to zeranol

Journal of Veterinary Pharmacology and Therapeutics, 1980
A highly specific antibody has been raised in sheep to an antigen prepared by coupling zeranol hemisuccinate to bovine serum albumin. An assay procedure is described and has been used to measure the cross‐reactivity of the antiserum, and evaluate the sensitivity of the assay method.
openaire   +1 more source

Prevalence of zeranol, taleranol andFusariumspp. toxins in urine: implications for the control of zeranol abuse in the European Union

Food Additives and Contaminants, 2004
There is currently little information concerning the prevalence of zeranol and taleranol in animal urine following metabolism of the naturally occurring Fusarium spp. toxins. An epidemiological study is described which involves four European Union control laboratories in which 8008 urine samples were screened for the presence of zeranol using a time ...
Launay, FM, Ribeiro, L, Alves, P, Vozikis, V, Tsitsamis, S, Alfredsson, G, Sterk, SS, Blokland, M, Iitia, A, Lovgren, T, Tuomola, M, Gordon, A, Kennedy, DG   +12 more
openaire   +3 more sources

Possible Naturally Occurring Zeranol in Bovine Bile in Northern Ireland

Journal of Veterinary Medicine, Series B, 1995
SummaryZeranol and two Fusarium toxins, α‐zearalenol and ß‐zearalenol, were confirmed by gaschromatography/mass spectrometry (GC/MS) in bovine bile samples referred to this laboratory for analysis. No evidence of zeranol abuse was found on‐farm. Given the recent suggestion that zeranol might arise from the metabolism of these Fusarium toxins, and the ...
Kennedy, Diarmuid, McEvoy, Joanne, Blanchflower, W.J., Hewitt, Margaret, Cannavan, A., McCaughey, Derek, Elliott, Christopher   +6 more
openaire   +2 more sources

Determination of zeranol and β-zearalanol in calf urine by immunoaffinity extraction and gas chromatography—mass spectrometry after repeated administration of zeranol

Journal of Chromatography B: Biomedical Sciences and Applications, 1991
A method for the determination of zeranol and its metabolite beta-zearalanol in bovine urine is described. It has been applied to samples from calves given multiple subcutaneous doses of zeranol. Samples were extracted with immunoaffinity columns containing antibodies raised against zeranol and were analysed by gas chromatography-mass spectrometry. The
BAGNATI R., PALEOLOGO ORIUNDI M., RUSSO V., DANESE M., BERTI, FEDERICO, FANELLI R.   +5 more
openaire   +3 more sources

Measurement of zeranol in plasma from three blood vessels in steers implanted with zeranol.

Journal of animal science, 1993
Zeranol (Z) is a widely used growth promotant; however, plasma Z profiles in cattle implanted with Z have not been characterized. This study was conducted to determine bovine plasma Z profiles. In Exp. 1, four steers (BW = 284.8 +/- 5.6 kg) were implanted with 108 mg of Z (Ralgro).
A E, Pusateri, D C, Kenison
openaire   +1 more source

Zeranol in Anirnal Production

1995
Zeranol, canlı ağırlık artışıüzerine etkili olan ve et veya karkas kalitesini olumsuz yönde etkilemeksizinyemleri hayvansal proteine dönüştürmede etkinliği bulunan bir anabolik ajandır.Bu makalede, zeranolun kimyasal yapısı, metabolizması, anabolik etkisi, kullanılışı,yan etkileri, kalıntı sorunu ve kalıntı tespit metotları özetlenmiştir.
DAĞOĞLU, Gürdal, AKSOY, Abdurrahman
openaire   +1 more source

Growth and Reproductive Traits in Beef Heifers Implanted with Zeranol

Journal of Animal Science, 1983
Weaned replacement heifers were implanted with zeranol at 8 and 11 mo of age in two trials to evaluate growth and reproductive traits. Approximately 100 beef heifers were used in each trial, and the heifers were divided into categories of heavier than average (H) and lighter than average (L) weaning weight.
R B, Staigmiller, R A, Bellows, R E, Short   +2 more
openaire   +2 more sources

Metabolism and disposition of [3H]zeranol implanted in the pig

Journal of Agricultural and Food Chemistry, 1992
International ...
Bories, G., Sutra, J.F., Tulliez, Jacques   +2 more
openaire   +2 more sources