Report on the Agricultural Experiment Stations, 1953 Page: 54
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54 REPORT ON EXPERIMENT STATIONS, 1953
Illinois stations, dehydrated alfalfa contains one or more unidentified
factors which stimulate the growth of chicks. They appear to be
distinct from the liver or whey factors. At the Arizona station the
effect of these factors was enhanced by feeding the chicks a vitaminA-deficient
diet, previous to placing them on experiment. Brewer's
yeast and sardine meal contain factors which produce the same
growth stimulation. The amount of unidentified factors stored in
1- to 3-day-old chicks varied with the hatch. The amount of casein
in the diet did not affect significantly the growth-stimulating property
A factor that improves feather pigmentation, growth rate, feed
efficiency, and calcium deposition in the skeleton is supplied in large
quantities by soybean oil meal, and casein, according to the Tennessee
station, but is scarce in peanut meal, sesame meal, and meat scraps.
The Colorado station has found that the addition of liquid betaine
concentrate to a nutrient-complete, all-plant-protein diet will increase
the growth of chicks. At the Utah station, a combination of histamine
and an antibiotic increased the growth rate significantly more than the
Value of surfactants in doubt
About two years ago a report was published to the effect that certain
"surface active agents," including many commercial preparations
for home laundry and dishwashing use, have a stimulating effect on
growth rate when fed to chicks. In order to confirm this report, the
.Washington station added a number of detergents (surfactants) and
germicides at various levels to a chick basal diet. Either procaine
or diamine penicillin was used as a positive control to obtain comparative
effects of the supplements on growth. In all feeding trials,
penicillin alone produced a significant growth response. The detergents
and germicides either produced no significant growth response
or, in some cases when fed at high levels, depressed growth.
In the Illinois station's research with surfactants it was found that
when an all-plant diet, to which crystalline B12, niacin, choline,
riboflavin, and pantothenic acid had been added, was supplemented
with any one of a number of surface-active agents, chick growth was
not improved at 4 weeks. One of the surfactants (Ethomid C/15)
was fed for a period of 10 weeks without significantly improving
growth. The station concluded that no advantage resulted from adding
the surfactant to the diet containing vitamin B12 and aureomycin.
At the Maryland station, on the other hand, although no increased
growth responses were noticed for the first 5 weeks in chicks fed two
surfactants, growth had apparently been stimulated by the end of
the seventh and eighth weeks, to the same degree as by penicillin by
a combination of the two surfactants. Combinations of the surfaceacting
agents and penicillin, however, were no more effective than
either supplement fed singly.
New high efficiency ration for hens
As a result of 2 years of research by the Storrs station (Connecticut),
a high efficiency ration for laying hens has been developed.
Paralleling in importance the high efficiency broiler ration developed
at Storrs in 1947, the new laying ration produces more eggs and greater
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United States. Office of Experiment Stations. Report on the Agricultural Experiment Stations, 1953, book, 1953; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc5989/m1/56/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.