Alternative raw materials unsuitable for human consumption might represent a great interest in animal nutrition. Freshwater bivalves represent an unexploited potential feed resource. The effects of freshwater mussel Sinanodonta woodiana meal on growth performance, histomorphology, and morphometric characteristics of the digestive system of rainbow trout ( Oncorhynchus mykiss ) were evaluated. A total of 540 rainbow trout juven...

Pelecitus tercostatus (Molin, 1860) (Onchocercidae, Dirofilariinae) was found in the leg of a Vinaceous-breasted Parrot Amazona vinacea (Aves, Psittaciformes) from Misiones, Argentina. The present report enlarges the host distribution of the species and represents the first record of any nematode in A. vinacea. The macroscopic lesions produced in the bird are also described.