نتایج جستجو برای: food conversion ratiothe final production of vannamei
تعداد نتایج: 21267046 فیلتر نتایج به سال:
BACKGROUND Fungal polyketides include commercially important pharmaceuticals and food additives, e.g. the cholesterol-lowering statins and the red and orange monascus pigments. Presently, production relies on isolation of the compounds from the natural producers, and systems for heterologous production in easily fermentable and genetically engineerable organisms, such as Saccharomyces cerevisia...
In this paper the heterogeneous firms and trade literature is extended by integrating quality of inputs and outputs in a food and agricultural setting. Recently, Sexton (2013) has suggested that intermediate agricultural input quality is critical in food processing firms’ output quality and pricing decisions. The results presented in this paper indicate that intermediate agricultural input qual...
Renewable energy sources are developed worldwide, owing to high oil prices and in order to limit greenhouse gas emissions. The objective of this research was to study the feasibility of biodiesel production from mountain almond (Prunus Scoparia) oil using ultrasonic system and optimization of the process using Artificial Bees Colony (ABC) Algorithm. The results showed that by increasing the mol...
Introduction Animal husbandry and livestock raising as the most important agricultural sub-sector reduces poorest peoplechr('39')s vulnerability all over the world by providing them a "food safety network". In this regard, ranchers are facing key challenges such as low yields of cattle, lack and fragmentation of pasture, water shortage and need to irrigate pastures and meadows, competition for...
The white shrimp, Litopenaeus vannamei, a globally important cultured prawn species, is an ideal animal for studying the impairment caused by the effects of heavy metals that are often detected in coastal areas. In this study, L. vannamei was exposed to different concentrations of cadmium (Cd) and zinc (Zn) for up to 28 d. Histopathological alterations in the hepatopancreas were observed in L. ...
essential oil of rosmarinus officinallis was investigated on toxicity and physiological aspect of elm leaf beetle xanthogaleruca luteola mull. for 3rd instar larvae and adults in controlled condition (25 ± 2 °c; 14:10ld; 65% rh). lc50 were estimated 2.55 and 1.11 for 3rd instar larvae and adults respectively. the effect of lc50 dose on remaining insects were investigated on nutritional indices....
Despite the high potential to increase sustainability of food systems, wastes and byproducts occurring in the food supply chain are currently only partially valorised at different valueadded levels. First-generation valorisation strategies that aim at utilisation of complete material streams for production of animal feed, energy, compost and/or specific consumer applications are already widely ...
aquatic organisms are one of most important human food sources but they can accumulate heavy metals entered aquatic ecosystems in their tissues and organs same time and can be transferred through the food chain to higher food levels and in the most top into the human body. shrimps are of the main groups of sea foods; and because they are benthic species, they can absorb high concentrations of h...
there are two major theories of measurement in psychometrics: classical test theory (ctt) and item-response theory (irt). despite its widespread and long use, ctt has a number of shortcomings, which make it problematic to be used for practical and theoretical purposes. irt tries to solve these shortcomings, and provide better and more dependable answers. one of the applications of irt is the as...
The total haemocyte count (THC), differential haemocyte count (DHC), phenoloxidase activity, respiratory burst (release of superoxide anion), superoxide dismutase activity, phagocytic activity and clearance efficiency to the pathogen Vibrio alginolyticus were measured when the white shrimp Litopenaeus vannamei (9.4-11.3 g) were injected individually with sodium alginate at 10, 20 or 50 microg g...
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