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Results for “Feedstuffs”

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13 recordsLinked to original sources
USGS1968

Dietary factors and hepatoma in rainbow trout (Salmo gairdneri). I. Aflatoxins in vegetable protein feedstuffs

Aflatoxins (toxic metabolites of the mold Aspergillus flavus ) were present in a commercial trout ration causing hepatoma in rainbow trout. Cottonseed meal and solvent extracts of cottonseed meal and of rations containing cottonseed meal and peanut meal were found by chemical assay and confirmed by duckling assay to contain aflatoxins. Diets containing these materials and a purified test diet to which aflatoxins had been added produced microscopic tumors in 6 months and gross lesions of hepatocarcinoma in 9 months. Similar diets without aflatoxin were negative.

Journal of the National Cancer Institute↗
USGS1943

Germinated seed versus ungerminated seed in diet of adult bobwhite quail

In connection with studies being conducted on the biological value of various feedstuffs, both wild and domestic, in the diet of captivity-reared adult Bobwhite quail, two tests were run in 1940 to determine if quail preferred germinated seed to ungerminated seed, and if germination might enhance the feeding value of seed in a maintenance diet.

Poultry Science↗
USGS1939

Save the Great Lakes fisheries!

During the winters of 1939-40 and 1940-41, two experiments involving 456 bobwhite quail, were conducted at the Patuxent Research Refuge, Bowie, Maryland, to determine the palatability and comparative feeding value of 20 common wild quail-foods when offered as a part of a maintenance diet....2. Mortality was low on all diets, the highest occurring on that containing a mixture of bayberry and wax myrtle fruits. On all diets the birds showed increases in weight during the early winter. These gains were better maintained by birds on the wild foods than those on control diets composed entirely of cultivated feedstuffs.....3. There were statistically significant differences between the quantities of the various diets eaten.....4. For palatability and acceptability, seeds of common ragweed (Ambrosia artemisiifolia) and of shrub lespedeza (Lespedeza bicolor) were the preferred wild foods.....5. It is concluded that pen-reared bobwhite quail can be maintained successfully through winters in the vicinity of Washington, D. C., on diets containing 50 per cent of any one of the wild foods listed and 50 per cent of a high-caloric commercial seed mixture with yellow corn as the principal cereal.....6. The results of these 'cafeteria' studies, although interesting and indicative of the preferences of quail in confinement, do not necessarily represent selections that might be. made by bobwhites in the wild.

Outdoor American↗