The aim of this study was to determine histopathological lesions and bacterial isolates in organs and tissues of clinically healthy gamitanas (Colossoma macropomum). Forty juveniles were collected from a fish farm in the region of Ucayali, Perú. Samples were collected from kidney, liver, spleen, stomach, gills and muscle for histopathological and bacteriological analysis. In the liver was found hydropic degeneration (39/40), in kidney, hydropic degeneration and tubular necrosis (40/40) with an increase of melanomacrophage centres in the periphery of the tubules, in stomach, hyaline degeneration (25/40), and in gills, infiltration of inflammatory cells in branchial filament (40/40), interlamellar epithelium hyperplasia (40/40) and hyperplasia in branchial filament (18/40). No lesions were found in the spleen. Myxosporean parasites were found in gills (2/40), kidney (40/40) and muscle (12...

El objetivo del presente estudio fue determinar lesiones histopatológicas y aislar agentes infecciosos en órganos y tejidos de gamitanas (Colossoma macropomum) aparentemente sanas. Se colectaron 40 especímenes juveniles en una piscigranja de la zona de Ucayali, Perú. Se tomaron muestras de hígado, bazo, riñón, estómago, branquias y músculo para análisis histopatológico y de los cinco primeros para análisis bacteriológico. En el hígado se encontró degeneración hidrópica (39/40), en el riñón se observó degeneración hidrópica y necrosis tubular (40/40), con incremento de centros melanomacrófagos en la periferia de los túbulos, en el estómago se observó degeneración hialina en las células de la mucosa (25/40), y en las branquias se observó infiltración de células inflamatorias en filamento branquial (40/40), hiperplasia del epitelio interlaminar (40/40) e hiper...

Introduction: Tarwi is an ancient leguminous plant that has been grown for many centuries in the Andean region. It has rich protein and fat contents, and since it has probiotic actions it may be used as a nutritional supplement in dairy products in Peru.Objective: To establish preliminary tests for the formulation and elaboration of a yogurt product using tarwi flour, aiming at the acceptability of such a product.Material and method: An experimental development study performed with Lupinus mutabilis Sweet for the development of a nutritional yogurt formulation incorporating Tarwi flour, and with nutritional, sensorial, and microbiological assessment.Results: Two mixtures incorporating different concentrations were elaborated (YSPT1; 70% powder milk + 30% tarwi flour), (YSPT2; 80% powder milk + 20% tarwi flour). Total solid contents in the mixtures were between 12 to 1...

Introduction: Tarwi is an ancient leguminous plant that has been grown for many centuries in the Andean region. It has rich protein and fat contents, and since it has probiotic actions it may be used as a nutritional supplement in dairy products in Peru.Objective: To establish preliminary tests for the formulation and elaboration of a yogurt product using tarwi flour, aiming at the acceptability of such a product.Material and method: An experimental development study performed with Lupinus mutabilis Sweet for the development of a nutritional yogurt formulation incorporating Tarwi flour, and with nutritional, sensorial, and microbiological assessment.Results: Two mixtures incorporating different concentrations were elaborated (YSPT1; 70% powder milk + 30% tarwi flour), (YSPT2; 80% powder milk + 20% tarwi flour). Total solid contents in the mixtures were between 12 to 1...