Effects of hypervitaminosis of vitamin B3 on silkworm biology.
J Biosci
;
2004 Dec; 29(4): 417-22
Article
in English
| IMSEAR
| ID: sea-110652
ABSTRACT
A high-dose of vitamin B(3) in silkworm diet interrupts larval feeding and normal growth. High mortality of larvae occurs during molting and they cannot complete this process normally. Also the larvae exhibit nicotinamide hypervitaminosis symptoms such as immobility, dyspepsia, darkening of the skin, inability to excrete normally, exerting brownish fluid from anus and swelling of rectal muscles. Maximum larval weights in 1, 2 and 3 g/l treatments were 2.9, 1.6 and 1.2 g respectively, while maximum larval weight in the control was 5.6 g. Larval stage compared to control had increased 18, 26 and 31 days respectively. The concentration increase of uric acid in haemolymph demonstrates the hyperuricemia, while other measured biochemical compounds show significant decrease; sodium and potassium did not change significantly.
Full text:
Available
Index:
IMSEAR (South-East Asia)
Main subject:
Phosphorus
/
Potassium
/
Bombyx
/
Sodium
/
Hemolymph
/
Calcium
/
Niacinamide
/
Plant Leaves
/
Morus
/
Feeding Behavior
Type of study:
Prognostic study
Language:
English
Journal:
J Biosci
Year:
2004
Type:
Article
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