Effects of selenium diets on growth, accumulation and antioxidant response in juvenile carp.
An 8-week feeding trial was undertaken with Cyprinus carpio to determine the effects of two commercial Se diets (HSe 1.0 mg kg⁻¹ and LSe 0.25 mg kg⁻¹) on growth, accumulation and antioxidant response in juveniles at time 0, 30 and 60 days. HSe carp had higher mean weight (W) values than LSe group at 60 days and the Fulton condition factor (K) indicated good fish health for both diet groups. Among the investigated HSe tissues, kidney and liver were mainly involved in Se accumulation, whereas the Se level in muscle indicated a very low Se contamination risk for human health. Selenium accumulation levels in HSe tissues followed this order: kidney>liver>muscle. Although growth was not impaired, biochemical antioxidant indicators in liver and kidney evidenced an oxidative stress condition in HSe juveniles. Furthermore, selenium supplementation levels, higher than the one employed in this study, might worsen the antioxidant status of carp.
Elia
Antonia Concetta
AC
Ecotoxicology Laboratory, Department of Cellular and Environmental Biology, University of Perugia, Perugia, Italy.
Prearo
Marino
M
Pacini
Nicole
N
Dörr
Ambrosius Josef Martin
AJ
Abete
Maria Cesarina
MC
D000704:Analysis of Variance; D000818:Animals; D000975:Antioxidants / Q000378:metabolism*; D001835:Body Weight; D002347:Carps / Q000254:growth & development* / Q000378:metabolism*; D019587:Dietary Supplements; D007668:Kidney / Q000378:metabolism; D008099:Liver / Q000378:metabolism; D018482:Muscle, Skeletal / Q000378:metabolism; D018384:Oxidative Stress / Q000187:drug effects; D012643:Selenium / Q000493:pharmacokinetics* / Q000494:pharmacology*; D013997:Time Factors
D000975:Antioxidants; D012643:Selenium