Vitamin a in Ling Cod Liver Oil

Nature ◽  
1939 ◽  
Vol 144 (3649) ◽  
pp. 634-634 ◽  
Author(s):  
L. B. PETT ◽  
MARIAN LIPKIND ◽  
G. A. LEPAGE
Keyword(s):  
Vitamin A ◽  
Cod Liver Oil ◽  
Ling Cod

THE NUTRITIVE VALUE OF MARINE PRODUCTS V. THE VITAMIN A CONTENT OF LING COD-LIVER OIL PRELIMINARY NOTE

1932 ◽  
Vol 7 (1) ◽  
pp. 405-412
Author(s):  
B. E. BAILEY
Keyword(s):  
Vitamin A ◽  
Nutritive Value ◽  
Pacific Coast ◽  
Cod Liver Oil ◽  
Preliminary Note ◽  
The Pacific ◽  
Marine Products ◽  
Ling Cod ◽  
Colorimetric Methods

The liver oil of the Pacific coast Ling cod has been examined for vitamin A by both biological and colorimetric methods. The oil is very rich in vitamin A, the least potent sample containing 20,000 rat units per gram.

VITAMIN A REQUIREMENTS OF GROWING CHICKS: I. PRELIMINARY STUDIES WITH "REFERENCE" COD LIVER OIL

1936 ◽  
Vol 14d (3) ◽  
pp. 21-24 ◽  
Author(s):  
Jacob Biely ◽  
William Chalmers
Keyword(s):  
Growth Factor ◽  
Vitamin A ◽  
Oral Administration ◽  
Vitamin A Deficiency ◽  
Normal Rate ◽  
Cod Liver Oil ◽  
Basal Ration

In experiments conducted to determine the requirements of chicks for vitamin A up to eight weeks of age, vitamin A was supplied, in addition to the basal ration, by oral administration of Reference Cod Liver Oil at the rate of 25, 50, 75 and 100 International units per day. It was found that chicks receiving 75 units of vitamin A per day grew at a normal rate and did not show any signs of vitamin A deficiency. The chicks that received the basal ration only, showed symptoms of avitaminosis A at three weeks of age, while the group receiving 25 international units per day at eight weeks clearly had not received a sufficient supply of the growth factor.

Comparative Value of Three Sources of Vitamins A and D for Fattening Pigs

1954 ◽  
Vol 1954 ◽  
pp. 45-47
Author(s):  
R. S. Barber ◽  
R. Braude ◽  
M. E. Coates ◽  
G. F. Harrison ◽  
K. G. Mitchell ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin A ◽  
Intramuscular Injection ◽  
Fish Meal ◽  
List Type ◽  
Cod Liver Oil ◽  
Commercial Preparation ◽  
Single Intramuscular Injection ◽  
Fattening Pigs

The efficacy of three sources of vitamins A and D supplements was tested in an experiment with fattening pigs involving the following four treatments :(1) Control—basal meal.(2) As control, but at one week of age the pigs had been given a single intramuscular injection of a commercial preparation, supplying 500,000 i.u. of vitamin A and 100,000 i.u. of vitamin D3.(3) Basal meal + 1 % cod-liver oil (containing 500 i.u./g. of vitamin A and 68 i.u./g. of vitamin 3), supplying 2,270 i.u. of vitamin A and 309 i.u. of vitamin D3 per lb. of diet.(4) Basal meal + synthetic vitamins A and D concentrate (containing 50,000 i.u./g. of vitamin A and 5,000 i.u./g. of vitamin D3), added to supply 2,250 i.u. of vitamin A and 300 i.u. of vitamin D3 per lb. of diet.The basal meal which was the standard fattening diet used at Shinfield consisted of: fine miller’s offal 50, barley meal 30, flaked maize 10, white fish meal 10, all parts by weight. It should be noted that the diet contained a precursor of vitamin A, and it was calculated that this would provide about one-third of the recommended allowance of vitamin A for fattening pigs.

The feeding of fresh and stored chick mashes containing cod-liver oil

1958 ◽  
Vol 50 (3) ◽  
pp. 340-343
Author(s):  
Alastair N. Worden
Keyword(s):  
Vitamin A ◽  
Cod Liver Oil ◽  
Food Conversion ◽  
Comparable Amount ◽  
Modern Methods ◽  
Powdered Form ◽  
Vitamin Preparation ◽  
Liver Vitamin ◽  
Young Chicks

1. Good quality cod-liver oil, produced by modern methods and containing anti-oxidants, is a highly satisfactory ingredient of the diet of young chicks whether fed fresh or stored as an ingredient of mixed mash for from 2½ to 3½ months before use at the recommended rate of 1 pint/cwt.2. Chicks so fed had slightly better food conversion ratios and a better appearance, and slightly lower liver vitamin A levels, than those birds receiving a comparable amount of vitamin A in powdered form.3. Chicks so fed had better food conversion ratios and appearance, a higher liveweight gain, and slightly higher liver vitamin A reserves than those receiving a powdered vitamin preparation at the recommended rate of use of 0·05 lb./cwt.4. It may be concluded that both this form of codliver oil and the powdered preparation are reliable sources of vitamin A as such.5. Chicks hatched in early December grew better and maintained their vitamin A reserves for longer than comparable chicks hatched in early March.

Lemon-Flavored Cod Liver Oil and a Multivitamin-Mineral Supplement for the Secondary Prevention of Otitis Media in Young Children: Pilot Research

2002 ◽  
Vol 111 (7) ◽  
pp. 642-652 ◽  
Author(s):  
Linda A. Linday ◽  
Richard D. Shindledecker ◽  
Jay N. Dolitsky ◽  
C. E. Pippenger
Keyword(s):  
Vitamin A ◽  
Secondary Prevention ◽  
Otitis Media ◽  
Blood Levels ◽  
Cod Liver Oil ◽  
Prevention Study ◽  
Mineral Supplement ◽  
Plasma Selenium ◽  
Tympanostomy Tubes ◽  
Secondary Prevention Study

We measured blood levels of fatty acids, vitamin A, and trace metals in children undergoing ambulatory surgery for placement of tympanostomy tubes and a comparison group having other ambulatory surgical procedures. We then performed a small, outpatient, secondary prevention study using nutritional supplements chosen on the basis of those blood levels. The study subjects had lower levels of red blood cell eicosapentaenoic acid (EPA) than did adult controls. Consistent with previous reports, the levels of vitamin A were ≤40 μg/dL for 69% of our subjects, and the plasma selenium levels for children were lower than published values for adults. We then studied one otitis media (OM) season; 8 children (0.8 to 4.4 years of age) received 1 teaspoon of lemon-flavored cod liver oil (containing both EPA and vitamin A) and 1 half-tablet of a selenium-containing children's chewable multivitamin-mineral tablet per day. During this OM season, study subjects received antibiotics for OM for 12.3% ± 13.4% (SD; p < .05) fewer days during supplementation than before supplementation. Larger, controlled trials are warranted to assess the utility of cod liver oil (of acceptable purity and taste) and a children's multivitamin-mineral preparation containing selenium, both for the prevention of OM and for the acceptance of delayed prescription of antibiotics for this disorder.

A Method of Enhancing the Vitamin A Value of Cod Liver Oil

1933 ◽  
Vol 30 (4) ◽  
pp. 516-519 ◽  
Author(s):  
E. R. Janes ◽  
H. F. Grover ◽  
E. J. Quinn
Keyword(s):  
Vitamin A ◽  
Cod Liver Oil ◽  
A Value
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