MATERIALS AND METHODS, The study, conducted at the
Institute of Animal Husbandry, Araneta University,

Malabon, Rizal, Philippines from August 1966 to
January 1967, made use of three hundred fifty (350)
ten-month old Single Comb White leghorn layers and
ten (10) eight-month old Single Comb White Leghorn
roosters,

The fertility and hatchability of chicken eggs
were obtained, The average volume of semen collected,
the number of chicks hatched, and the number of chicks
dead in shell, and also the number of dead germs were
recorded,

DISCUSSION OF RESULTS. The average volume of semen
collected from the different roosters was 0,209 mil,
which is milky in consistency. 1t is evident that
the sperm count ranges from 30 to 60 million per eja=-
culation, A total of 24,883 eggs were set throughout
the study, The percentage fertility was satisfactory,
Out of the total number of eggs set, there were 22,056
that were fertile, It could be seen, therefore, that
the percentage fertility ranged from 82,69% to 95.64%
or with a mean of 89,31 ¥ 1,85%, The per cent infer=
tile ranged from 4,35 to 17,31% or with a mean of
10,68 ¥ 0,85%,

A total of 17,961 chicks hatched, The mean per-
centage hatchability was 81,42 ¥ 1,38%, the range
being from 66,85% to 90,07%, Likewise, the per cent
hatch ranged from 57,60% to 81,88% with a mean of
2:83 %1,52%,

With regard to the number of dead germs and dead
in shell, it was found out that the per cent dead
germs ranged from 1,24% to 11,95%, with a mean of
5,15 ¥ 2,05%, while the dead in shell ranged from
zeroto 42,27% or a mean of 17,52 ¥ 2,08%,

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