Report on the Agricultural Experiment Stations, 1952 Page: 80
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80 REPORT ON EXPERIMENT STATIUNS, 1952
a mixture of corn, wheat, and oats. The cost of the milo at local prices
was $1.50 less per 100 pounds than the cost of the mixed grain. The
hens whose scratch feed consisted of milo alone produced just as many
eggs as the birds fed the more expensive cereal mixture. Since both
groups consumed approximately 50 pounds of scratch feed per bird
per year the saving with the milo-fed group amounted to 75 cents per
bird per year. For the 1,000,000 laying hens in New Mexico, this
saving to the State's poultry industry would amount to a total of
Source of calcium in eggshells
Radioactive tracer experiments with small animals at the Florida
station have resulted in new and important findings. Chickens, given
large doses of calcium 45 and phosphorus 32, proved to be much more
resistant to the effects of radiation than other species. An egg laid 15
minutes after the feeding of calcium 45 was extremely high in radiation,
showing that the calcium in the eggshell is chiefly derived from
the immediate daily diet. The radioactive calcium and phosphorus
were excreted from the body cells principally into the duodenum. Reabsorption
of calcium occurred, however, throughout the intestinal
tract, especially in the lower ileum. Chickens also reabsorb calcium
from the cloaca, differing in this particular from rats and rabbits.
Amino-acid requirements of growing chicks
Using an original forced-feeding technique, the Illinois station has
determined the requirements of growing chicks for certain essential
amino acids. Ten and 15-day old male crossbred chicks fed a ration
with a minimum protein content of 20 percent needed the following
levels of the five critical amino acids in order to make an average
daily gain of 8 percent: Arginine-1 percent of ration, lysine-0.8
percent, methionine without cystine-0.65 percent, methionine with
0.5 percent cystine-0.35 percent, and tryptophan--0.2 percent.
A ration supplemented with methionine significantly increased the
efficiency of feed utilization by chicks both in batteries and on littercovered
floors, and improved the growth rate as well, in tests made at
.the Storrs station (Connecticut). It is estimated that this improvement
in efficieny of food utilization and growth rate could result in
a saving of about $4 per ton of feed in a high-energy corn-soya ration
supplemented with methionine.
Molasses and sugar in hen and chick rations
Wood sugar molasses can be used to advantage as a feedstuff for
laying hens, the Oregon station reports. When fed to hens in the
amount of 7.5 percent of the ration to replace an equal amount of
cereal grain, the wood sugar molasses increased egg production and
hatchability. Hens ate the molasses readily and their condition compared
favorably in every way with hens not fed molasses. Although
an initial mild diarrhea was noted in hens given molasses, it was
overcome with no apparent ill effects. A higher level of molasses, 15
percent, however, caused egg production to decrease, and the droppings
to become heavy and sticky.
Low-grade sugar, also known as third-strike sugar, is potentially
available in great quantity in Hawaii since it constitutes approximately
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United States. Office of Experiment Stations. Report on the Agricultural Experiment Stations, 1952, book, January 1953; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc5990/m1/82/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.