Gorgan University of Agricultural Sciences and Natural Resources

Preliminary evaluation of dietary pomegranate (Punica granatum) peel powder effects on systemic immunity, antioxidant status, and reproductive performance in goldfish (Carassius auratus)

Abstract Background Pomegranate peel powder (PPP) is a polyphenol-rich by-product with antioxidant and immunomodulatory properties. Although PPP has been shown to improve growth in goldfish ( Carassius auratus ), its effects on immunity, antioxidant status, and reproductive perfo...

Claws, consequences and coexistence: Local community attitudes toward large carnivores in mountain landscapes

Abstract Human attitudes toward large carnivores are shaped by multiple interrelated socio-psychological factors, yet conservation interventions often focus on reducing material impacts while paying less attention to underlying attitude drivers. We investigated attitudes towards...

Effects of ammonium to nitrate ratio on vase life and stem strength of gerbera cut flowers

The postharvest quality of gerbera cut flowers a major floricultural commodity is largely limited by stem bending and abbreviated vase life. Although nitrogen form is a critical preharvest variable, the optimum ammonium‑to‑nitrate (NH₄⁺/NO₃⁻) ratio for extending postharvest longe...

Shelf-life extension of refrigerated rainbow trout fillets using chitosan/gelatin bilayer film enriched with ZnO nanoparticles and tea polyphenols

Abstract This study aimed to evaluate the effect of a chitosan–gelatin film incorporated with zinc oxide nanoparticles (ZnO NPs) and tea polyphenols (TPs) on the bacterial count, physicochemical properties, and sensory attributes of rainbow trout during refrigerated storage. To a...

Purple sulfur bacteria convert aquaculture waste into antioxidant-rich single-cell protein through biofloc technology

Global aquaculture confronts twin sustainability imperatives: dwindling fishmeal supplies due to overfishing and the annual generation of over 20 million tonnes of processing by-products. Addressing these interconnected challenges, we developed an integrated bio-valorization stra...