effects of the addition of a marigold extract to diets fed to channel catfish (ictalurus punctatus) on growth parameters
نویسندگان
چکیده
the expansion of aquaculture in the last 10 years has made it an important source of protein worldwide. however, increased production, and the culture intensification it carries, results in higher risk of infectious disease due to poor water quality and high stocking densities. disease has several negative effects on fish, which include reduced feed efficiency, impaired growth and death, representing a direct loss of investment in feed, labour and other inputs.
منابع مشابه
Short Communication:Effects of the addition of a marigold extract to diets fed to channel catfish (Ictalurus punctatus) on growth parameters
متن کامل
Short Communication:Effects of the addition of a marigold extract to diets fed to channel catfish (Ictalurus punctatus) on growth parameters
متن کامل
Channel Catfish Ictalurus punctatus
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A study was conducted to examine the effect of dietary levels of distiller’s dried grains with solubles (DDGS) on growth, body composition, hematology, immune response, and resistance of channel catfish, Ictalurus punctatus, to Edwardsiella ictaluri challenge. Five diets containing 0, 10, 20, 30, and 40% DDGS with supplemental lysine (Diets 1–5) as partial replacements of a combination of soybe...
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Thyroid (TH) and growth (GH) hormones, and insulin-like growth factor I (IGF-I) are anabolic regulators in fish and responsive to nutrient intake. A study was conducted to determine if previously reported growth effects of dietary arginine (ARG) in channel catfish were related to the activation of endocrine axes. In a first experiment, catfish were fed incremental levels of ARG (0.5 - 4% of die...
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chapter i provides an overview of structural linguistics and touches upon the saussurean dichotomies with the final goal of exploring their relevance to the stylistic studies of literature. to provide evidence for the singificance of the study, chapter ii deals with the controversial issue of linguistics and literature, and presents opposing views which, at the same time, have been central to t...
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عنوان ژورنال:
iranian j. of fisheries scienceناشر: agricultural research,education and extension organization
ISSN
دوره 14
شماره 3 2015
کلمات کلیدی
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