Results 181 to 190 of about 2,677 (220)

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
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Radioimmunoassay of the anabolic agent zeranol. V. Residues of zeranol in the edible tissues, urine, faeces and bile of steers treated with Ralgro

Journal of Veterinary Pharmacology and Therapeutics, 1986
Dixon, S.N., Russell, K.L., Hekzman, RJ. & Mallinson, C.B. Radioimmunoassay of the anabolic agent zeranol. V. Residues of zeranol in the edible tissues, urine, faeces and bile of steers treated with Ralgro. J. vet. Pharmacol. Therap. 9, 353–358.Two trials were conducted on steers implanted with zeranol (Ralgro) to determine the edible tissue ...
S N, Dixon, K L, Russell, R J, Heitzman, C B, Mallinson   +3 more
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A note on the response to sequential implantation with zeranol

Animal Science, 1982
ABSTRACTTwo farm trials were made to investigate the response to a second implant with the anabolic agent zeranol. Seventy cattle were implanted at the start of the growing period, at 10 to 12 months of age, the remaining 49 cattle being left as controls.
B. G. Lowman, N. A. Scott, S. A. Mackison   +2 more
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Sexual Development in Beef Bulls Following Zeranol Implants

Journal of Animal Science, 1985
Two trials were conducted to study the effect of zeranol implants on growth and sexual development of bull calves. Trial 1 compared the effects of implanting with 72 mg of zeranol at 48 d of age (branding), at 215 d of age, or at both times with nonimplanted control bulls.
R B, Staigmiller, R M, Brownson, R J, Kartchner, J H, Williams   +3 more
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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
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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
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Zeranol: doping offence or mycotoxin? A case‐related study

Drug Testing and Analysis, 2011
Zeranol ((7R,11S)‐7,15,17‐trihydroxy‐11‐methyl‐12‐oxabicyclo[12.4.0]octadeca‐1(14),15,17‐trien‐13‐one, also referred to as 7α‐zearalanol, Ralone®, Frideron®, Ralgro®, etc.) is a semi‐synthetic estrogenic veterinary drug with growth‐promoting properties.
Mario, Thevis, Gregor, Fusshöller, Wilhelm, Schänzer   +2 more
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Preparation and properties of monoclonal antibodies to the anabolic agent zeranol

Journal of Veterinary Pharmacology and Therapeutics, 1984
Monoclonal antibodies have been produced using two haptens, zeranol‐7‐hemisuccinate coupled to bovine serum albumin and zeranol‐16‐carboxypropyl ether coupled to human serum albumin. An assessment of cross‐reactivity demonstrated that the monoclonal antibody raised against the 7‐hemisuccinate derivative reacted with zeranol (100%), talernol (12 ...
A P, Carter, S N, Dixon, M H, Bew
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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

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
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