نتایج جستجو برای: piaractus brachypomus
تعداد نتایج: 392 فیلتر نتایج به سال:
ویتامین ث از مواد مغذی مهم در تغذیه آبزیان بوده و در بالا بردن مقاومت آبزی در برابر عوامل استرس زا و افزایش رشد آن ها اهمیت زیادی دارد. تأثیر افزودن مقادیر متفاوت ویتامینثبه شکل ال اسکوربیل-2- پلی فسفات در جیره غذایی به مدت 10 هفته بر رشد، بازماندگی و برخی شاخص های خونی پاکوی قرمز Piaractus brachypomus بررسی شد. تعداد 240 قطعه بچه ماهی با میانگین وزن اولیه 0/22±3/51 گر...
Present study aims to determine suitable dose of inulin in Piaractus brachypomus fry diet and its effect on growth, survival and some hematologic indices in this species. In this research, one basic diet as control and three experimental diets including three levels of 1, 2 and 3% inulin each with three replicates were considered. Fish with mean initial weight of 2.31±0.14g were fed with experi...
The physiological responses of juvenile tambaqui (Colossoma macropomum) fed commercial feed supplemented with different concentrations of camu camu (Myrciaria dubia) were evaluated. The design was completely randomized, with treatments arranged in a factorial design with three proportions of camu camu (15%, 30% and 45%) and a control treatment (100% commercial diet), with four replicates per tr...
The morphological characteristics of the ventricular myocardium and of coronary vascularization were studied in three freshwater teleost species, Piaractus mesopotamicus, Colossoma macropomum and Clarias gariepinus (African catfish), by correlating their ventricular shapes and swimming habits. In Piaractus mesopotamicus and Colossoma macropomum, species with highly active swimming habits, the c...
The spermatogenesis of Piaractus mesopotamicus was investigated under light and transmission electron microscopy. The specimens were captured from their natural environment (Rio Miranda and Rio Aquidauana, Pantanal Matogrossense, Brazil) during April and September. The results were compared with the spermatogenic data of specimens under captivity condition. In both conditions, P. mesopotamicus ...
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