Experiment Station Record, Volume 92, January-June, 1945 Page: 252
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252 EXPERIMENT STATION RECORD [Vol. 92
The nutritive value of the protein of a few South African soybean meals,
S. J. MYBURGH (Onderstepoort Jour. Vet. Sci. and Anim. Indus., 19 (1944), No.
1-2, pp. 161-168).-Following methods described by Mitchell (E. S. R., 51, p.
407), the biological value of raw soybean meal was found to average 49.6 - 3.092,
which was considerably lower than the biological value of 63.3 1.354 found for
heated soybean meal. Heating also raised its digestibility from 67 to 71 percent.
The net percentage of nitrogen utilization of the heated product was 54.5 as compared
with only 39.7 for the raw product. The biological value of another cooked
but not baked meal was 55.1 - 1.945, with digestibility 62 percent. The better
palatability and higher protein efficiency indicates that it is advisable to use heated
meals. Each test, with the three types of soybean meal, respectively, was conducted
with six male rats.
Commercial feeding stuffs, 1943-44, E. R. TOBEY (Maine Sta. Off. Insp. 192
(1944), pp. 46).-The guaranteed and found analyses of 318 samples of feeds
officially examined in connection with the Maine Feeding Stuffs Law, with definitions
(E. S. R., 91, p. 60).
Station initiates new investigations in sheep breeding and management,
R. H. WALKER (Farm and Home Sci. [Utah Sta.], 5 (1944), No. 3, pp. 6-7, illus.
3).-These investigations are briefly outlined.
Sheep production in Alberta, J. E. BOWSTEAD and J. P. SACKVILLE (Alberta
Univ., Col. Agr. Bul. 19, 4. rev. (1944), pp. 80, illus. 26).-A revision of the
publication previously noted (E. S. R., 61, p. 259).
Some observations on plant versus animal protein supplements for young
pigs, B. W. FAIRBANKS, J. L. KRIDER, and D. CATRON. (Univ. Ill.). (North Amer.
Vet., 25 (1944), No. 6, pp. 351-355).-During the first 13 weeks of an experiment
in which pigs confined in dry lot received 11.5 percent of protein, 31 percent died.
There were symptoms of anorexia, dermatitis, emaciation, rough hair coat, wobbly
gait, and some incoordination. When plant proteins only were fed, there was a
death loss during this period of 75 percent. When synthetic thiamine, riboflavin,
niacin, pantothenic acid, pyridoxine, and choline were fed in excess of the pigs'
requirements, the death loss with the vegetable protein group was reduced to 50
percent. With like supplements to the animal protein ration, the death loss was
eliminated. The growth rate with the animal protein was greatly increased, and
with the plant protein group it was equal to that produced with the unsupplemented
animal proteins. However, the occurrence of dermatitis and some goose-stepping
indicated that the ration with the six synthetic vitamins was not nutritionally complete.
Supplementing the basal ration with 6 percent dried corn distillers' solubles
produced more rapid growth and reduced death losses, but severe incidences of goosestepping
were encountered, particularly in the animal protein lot. Evidently the
dried corn distillers' solubles was not so effective in correcting the nutritional deficiencies
of the basal rations as the six synthetic vitamins, but the corn distillers'
solubles contained growth factors that were deficient in the basal ration. The growth
rates were increased and the death losses decreased for pigs on the basal rations
by the inclusion of 10 percent alfalfa meal, so that the gains were practically
equivalent to the gains on the basal ration with the six synthetic vitamins. When
pigs had access to rye pasture during the preweaning period, evidently certain needed
factors were stored, enabling the pigs to grow and gain economically during the
postweaning period in dry lot, even on a ration not satisfactory for pigs fed continuously
in dry lot.
The thiamine requirement of pigs as related to the fat content of the diet,
N. R. ELLIS and L. L. MADSEN. (U. S. D. A.) (Jour. Nutr., 27 (1944), No.
3, pp. 253-262, illus. 2).-Additional work was conducted to establish the relationship
of thiamine intake of the pig (E. S. R., 84, p. 800) to that of dietary fat with
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U.S. Department of Agriculture. Agricultural Research Administration. Office of Experiment Stations. Experiment Station Record, Volume 92, January-June, 1945, book, 1947; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc5064/m1/265/: accessed March 29, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.