[Urinary steroids in calves following administration of anabolic compounds. Effect of total diet]. / Les stéroïdes urinaires chez le veau après administration d'anabolisant. Influence de la diète totale.

Levels of testosterone, trenbolone, 17 beta-estradiol (conjugated plus unconjugated) and creatinine were measured in urine of calves treated 55 days before with trenbolone and 17 beta-estradiol implants. The mean concentration of urinary creatinine and implant steroids was increased by a factor 3 after 1 day of total diet and 5 after 2 days, levels of individual calves exhibiting a great dispersion.

[Not Available]. / Un cas d'infecondite chez les faisans description - reproduction - etiologie.

In the year 1976, during the reproductive season, a severe problem occurred on a pheasant farm. Eggs were infertile and male pheasants developed an atrophy of the testes with a more or less complete aplasia of the seminiferous tissue. The outstanding feature was the severe lesions in the male genital organs and absence of changes in the female. Initial inquiries did not provide a satisfactory explanation for this observation but led us to suspect the toxic action of Zearalenone and its derivatives. Injecting sexually active male pheasants with dihydrogenated Zearalenone reproduced the lesions in the testes. It therefore seems reasonable to suggest that the problem seen in 1976 was caused by contamination of the feed with Zearalenone. Pheasants react to this compound in the same way as geese, turkeys and hens.