Trenbolone Acetate

​The androgenic anabolic steroid trenbolone acetate is licensed as a growth promoter for farm animals in the U.S. and several other countries. Even though it is used in several million beef cattle in the U.S., a risk assessment of its potential effects on fish and wildlife has yet to be conducted. It was recently demonstrated that this androgen was found in an active form in the environment and persists for long periods23 in some samples. In an 8-week study, cattle were treated with trenbolone acetate and liquid manure was collected and spread on fields after several months of storage.

During storage, the level of trenbolone decreased from 1700 to 1100 pg/g of the active 17 alpha-isomer, corresponding to a half-life of 267 days. In a study conducted using cattle feedlot effluent from Nebraska, we found a high level of androgenicity in the effluent (Figure 10.1), and our colleagues at the Universities of Nebraska and Florida found that wild fathead minnows (Pimephales promelas) displayed morphological (50% reduction in testis weight) and endocrine (abnormal Trenbolone acetate for sale /estradiol ratios)35 alterations compared to fish from a non-contaminated reference site. Trenbolone acetate for sale, At this time, we have not determined whether the androgenic activity in this sample arises from natural steroids or from trenbolone.