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The avian family Anatidae, commonly called waterfowl, comprise the ducks, geese, and swans. The International Ornithological Committee (IOC) recognizes these 174 Anatidae species distributed among 53 genera, 32 of which have only one species. Eight species on the list are extinct; they are marked (E). [1]
Example of a label showing the amount of niacin (Vitamin B3), and specifying to be niacinamide in the ingredient section.. The United States Government adopted the terms niacin and niacinamide in 1942 as alternate names for nicotinic acid and nicotinamide, respectively, and encouraged their use in nontechnical contexts to avoid the public’s confusing them with the nearly unrelated (and toxic ...
Niacin deficiency is a consequence of a diet low in both niacin and the amino acid tryptophan, a precursor for the vitamin. Low plasma tryptophan is a non-specific indicator, meaning it can have other causes. The signs and symptoms of niacin deficiency start to revert within days of oral supplementation with large amounts of the vitamin. [23] [24]
Micronutrient deficiency is defined as the sustained insufficient supply of vitamins and minerals needed for growth and development, as well as to maintain optimal health. Since some of these compounds are considered essentials (we need to obtain them from the diet), micronutrient deficiencies are often the result of an inadequate intake.
This is the largest of the steamer duck species. It is a massively built waterfowl at 3.5–7 kg (7.7–15.4 lb) and 65–84 cm (26–33 in) in length, with the males noticeably larger than the females. [2] Males weigh an average of 5.34 kg (11.8 lb) while females weigh around 4.2 kg (9.3 lb) on average. [3]
The report calls for stepped-up conservation efforts to help the hundreds of species in decline. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ...
The resulting name niacin was derived from nicotinic acid + vitamin. [111] [83] Carpenter found in 1951, that niacin in corn is biologically unavailable, and can be released only in very alkaline lime water of pH 11. This explains why a Latin-American culture that used alkali-treated cornmeal to make tortilla was not at risk for niacin ...
The chicks of birds in many families, such as the waterfowl, waders, and gamebirds, are usually nidifugous. The opposite of nidifugous organisms are nidicolous ( / n aɪ ˈ d ɪ k ə l ə s / ny- DIK -ə-ləs ; from Latin nidus "nest" and -colus "inhabiting") organisms; a nidicolous organism is one which stays at its birthplace for a long time ...