xi.; ‘s l
\- .
- 26 Tlzir_ty-Fourth Amiuai Report
Poultry Breeding. Substantial progress has been made in
the breeding to combine exhibition qualities and egg produc-
tion in the same strain of fowls. During the past year, nunier-_
_ ous birds of excellent exhibition quality, that is, birds that
, would score above 92, have made trap-nest records above 150
eggs.
i , Metabolism in the Chicken. The continuation of an ex-
periment t·o determine the relative importance of lime as a part
1 of the ration for laying hens confirms former results, namely, g
i that egg production is dependent upon an ample lime supply
l and that this lime is equally as effective in the form of ground
l limestone as in oyster shell, and adds the new observation that
rock phosphate (triealcium phosphate) in this trial was not
used for making egg-shell, but for making bone. lt was also
found that hens which received no grit for eight months re-
tained enough in their gizzards to serve as a grinder.
Meat Scrap in the Laying Ration. The third year’s work
with YVhite WVyandottes to determine the most efficient and
economical percentage of meat scrap in the laying ration has
i been completed. The average production for the three years
is as follows:
Percentage of meat Average production
. scrap in mash per hen three years
` 5 100.9
{ io 125.6
  15 134.5
C 20 -141.6
T From the results of the three years’ work, it appears that
the mash mixture should contain at. least 20 per cent meat
i scrap to secure the maximum production without forcing the
birds.
The Feeding of Skim-Milk to Poultry. The first year’s
A work with \Vhite Vvyandottes to compare the feeding of sour
skim-milk with and without a. dry mash indicates that when
sour skim-milk is constantly before the birds, it is not neces-
sary to feed a dry mash.
I