Sex, hormone status, and growth rate influence dietary isotope fractionation in laboratory rats
Kim, Sora; Santollo, Jessica (2018), Sex, hormone status, and growth rate influence dietary isotope fractionation in laboratory rats, UC Merced, Dataset, https://doi.org/10.6071/M35379
Stable isotope analysis of rat tissues to determine effects of gonadectomization. Four groups - female, ovarectomized, male, and castrated male - were fed a constant diet for 30 days. Fat, muscle, liver, and kidney were sampled at the experiment's end while serum and blood were sampled at days 0, 1, and 30. We found that sex and removal of gonadal hormones are factors either individually or interactive for carbon and nitrogen stable isotope composition in serum and blood (at day 30) as well as stable nitrogen isotope composition of muscle and liver. Furthermore, the degree of fractionation in these tissues is related to growth rate.