Research Results - (PDF, 101 mb) - USAID

weights, lambs born, lamb birth weights, lamb
weaning weights, lambs raised, and lambing
intet v3! as been measured since November,
198. Th',.is study was designed to continue
throagh three lambings and ended in August,
190. With this information feeding systems
that are biologically and economically effective
could be developed,
Project Progress and Achievements
Bogor
a. Publication of nutrient requirements of
Indonesian sheep and goats
The nutrient requirement tables were
compiled utilizing data generated from experiments
supported by the SR-CRSP and with
other data generated in Indonesia. The manuscript
was reviewed by scientists in the United
States andJ their comments incorporated. The
publish.Ad tables are now used in Indonesia. A
more formal publication is planned for wider
distribution throughout Southeast Asia.
b. Summarizing chemical composition of
locally important feeds for small ruminants
The composition of the feedstuffs utilized
in all of the nutrition feeding studies are
now part of the computerized data bank which
is maintained at BPT. With the development of
the small ruminant network, these data will now
be available to many countries.
c. Publication of small ruminant feeding
recommendations for village smallholders
Techpacks on feeding have been developed
and are available to farmers. Technical
information files were also developed for several
ieedstuffs. These continually updated files
are important to scientists, extension personnel,
and in same cases, to advanced farmers. This
system allows updating as more information is
available and is an excellent data resource.
d. Testing technologies developed using onfarm
evaluations
The nutrition staff was very active in the
on-farm evaluations that continued in 1989-90.
These visits and continued observations are
important to increase the awareness of scientists
to the practical problems that farmers face and
to help test new technologies. The
multidisciplinary approach improves communication
between scientists and develops more
unified programs.
Sei Putih
a. Supplementation of local (Sumatra thin-tail)
and F1 St. Croix crossbred ewes grazing native
pasture under rubber trees
An experiment was conducted to study
the effect of feed supplementation during the
last six weeks of pregnancy, lactation, and
mating on the reproductive performance of
ewes and growth rates of lambs. A flock of
Sumatran thin-tail (SIT) and F1 (St. Croix x STn)
ewes was divided into two similar groups: a
control group (C), grazing under rubber plantations
alone, and a supplemented group (S),
which received concentrate in addition to
grazing. The concentrate was made of rice bran
(44.3%), cassava meal (31.4%), molasses (20.7%),
fish meal (1.4%), urea (1%), and limestone
(1.1%). After 21 months, the supplemented
ewes were heavier postpartum (STI', 22.2 kg; F1,
28.0 kg) than the control ewes (SfT, 21.0 kg; F1,
25.7 kg) and gave birth to more lambs (S,100; C,
85). Birth and weaning weights and litter size
were not significantly affected by treatment, but
lambing interval was reduced with supplementation.
Productivity per year was significantly
higher in the supplemented ewes, both per head
and per unit weight of ewe. Mortality of lambs
was 17.6% for the control group and 14.2% for
the supplemented group. This system of
supplementation improved the performance of
ewes, but did not result in economic gains.
b. Introduction of forage species and their
establishment in new rubberplantations
Four local grasses, seven introduced
grasses, nine legumes, and one forb were estab­
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