Results 171 to 180 of about 2,677 (220)
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Zeranol—A ‘nature-identical’ oestrogen?
Food and Chemical Toxicology, 1985The use of implants of zeranol (alpha-zearalanol), a widely-used anabolic growth promoter, in food animals results in very low residues of this compound in the edible tissues. In comparison, residues of myco-oestrogens--specifically the beta-resorcylic acid lactones (RALs) such as zearalenone and its metabolites--commonly found as contaminants of ...
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Response of Nigerian zebu cattle to Zeranol implants
Tropical Animal Health and Production, 1980The effect of Zeranol, an anabolic agent, on the weight gains of Nigerian zebu fattening bulls was investigated over a period of 16 weeks. Implanted Sokoto Gudali and White Fulani bulls showed average daily weight gains of 0.5 and 0.49 kg respectively as compared to 0.47 and 0.41 kg by non-implanted counterparts.
T U, Obi, M A, Daniyan, L O, Ngere
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Environmental Sampling and Analysis for Zeranol
American Industrial Hygiene Association Journal, 1987Due to concern over health effects associated with the use of zeranol, a sampling and analytical method to monitor zeranol in the work environment was developed. The collection strategy included air samples on FHLP filters, area samples on gauze pads, hand/dermal samples on gauze pads and bulk samples.
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Effect of zeranol on bull muscle fibre composition
Meat Science, 1986Two trials are reported in which bulls were implanted with zeranol and slaughtered at 18 months. There was no significant change in carcass weight due to zeranol in either trial. Samples of the longissimus dorsi (LD) and splenius (Sp) were cross-cryosectioned, stained for myofibrillar ATPase and examined by conventional light microscopy.
O A, Young, D M, Foote, J J, Bass
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Effects of zeranol upon bovine testicular function
Theriogenology, 1985Effects of zeranol upon testicular function in bulls were studied. In Experiment I, young bulls (104+/-1.7 days of age) were either implanted with 36 mg zeranol or served as controls with reimplantation on days 56 and 112 after first implant. After a 168-day treatment period, half the bulls were orchidectomized with the remaining bulls assigned to a ...
P E, Juniewicz, T H, Welsh, B H, Johnson
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Metabolism and disposition of [3H]zeranol implanted in the pig
Journal of Agricultural and Food Chemistry, 1992International ...
Bories, G. +2 more
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THE EFFECTS OF ZERANOL ON THE FEEDLOT PERFORMANCE OF BEEF BULLS
Canadian Journal of Animal Science, 1983Fifty-three cross-bred bulls, aged 5–7 mo, were divided at random into a nonimplanted control group of 26 bulls and a treatment group of 27 bulls, which were each implanted with 36 mg of zeranol on the 1st, 81st, and 155th day of the experiment. They were fed a high energy diet ad libitum for 168 days during which time liveweight and feed consumption ...
Makarechian, M. +3 more
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Studies on the genotoxicity of the anabolic drugs trenbolone and zeranol
Archives of Toxicology, 1986The androgen trenbolone, and the mycoestrogen zeranol, both anabolic drugs, were tested for their genotoxic potential. Test systems were the SOS-chromotest, the rec-assay and the V79 sister chromatid exchange test without and with metabolic activation using rat liver homogenates and primary rat hepatocytes.
M, Scheutwinkel, W, vd Hude, A, Basler
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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.
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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.
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Effects of zeranol on protein turnover in L6 myotubes
Domestic Animal Endocrinology, 1987Protein 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
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