Research Results - (PDF, 101 mb) - USAID

Research Results
Objectives
Indonesia
1. Development of high and low prolificacy
strains of the Javanese sheep.
2. To continue on-farm performance evaluation
of hair sheep and their crosses with local sheep
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3. To utilize data from work with Outreach
Pilot Project (OPP) to provide assistance for
farmers in breeding and management.
4. To continue support for training of Indonesian
scientific personnel.
Morocco
1. To continue on-farm performance evaluation
of D'Man and Sardi crosses.
2. Development of a new strain of sheep [50%
lYMan (D), 50% Sardi (S)], with emphasis on
extended breeding season, twinning and growth
rate.
3. To evaluate the cause-and-effect relationships
between various hormone levels and performance
traits in D'Man and Sardi breeds.
U.S.
To provide training opportunities in sheep
breeding research to students from host countries,
U.S., and other countries and to develop
information needed for and complementary to
the overseas research components (U.S.).
Problem Statement and Approach
(these are listed to correspond to the objectives)
Indonesia
1. Development of strains which will reliably
produce either twins and triplets at a high
proportion or almost exclusively singles and
twins is of interest to farmers with varying
levels of capital, feed supply, and management.
To accomplish this objective, 11 Cicadas rams,
mated to 30-40 local ewes each, were progeny
tested Ovatorteibinmasednthew
at the Sei Putih Station in North Sumatra.
Ovulation rate is being measured on the ewe
progeny at 10-12 months of age and will be used
as the main diagnostic tool to classify the rams
as F , IP+ or ++where l is the prolificacy gene.
rams have been returned to Cicadas where
proven 1P Fl and ++ individuals will be used in
the high and low lines, respectively.
2. For the evaluation of hair sheep, all available
pure St. Croix and three-quarterSt. Croix (from
St. Croix Xlocal sheep matings) sheep have been
included in a two-year trial designed to compare
reproduction and lamb production of the
respective genotypes and the local sheep, with
and without supplementation of the forage
available under rubber trees.
Supplementation is with feeds and at
levels determined by the nutrition project
participants. The goals are: (1)to determine,
before releasing the St. Croix and its crosses,
whether these animals could maintain acceptable
fertility and viability without supplementation
in this environment and (2)whether
supplementation would be economically feasible
(increase in meat production vs. supplemental
feed and labor costs). Data are being
collected on fertility, prolificacy, lamb and ewe
viability, lamb growth, adult sheep weights, and
health care required. Post-weaning growth of
lambs on different diets is also being measured
using surplus male lambs.
3. SR-CRSP participation was continued in
collection, summarization, and interpretation of
data from OPP and ORP farms.
4. Support for graduate studies continued for
Subandriyo at the University of Missouri, and
for Ismeth Inounu and Bambang Setiadi at IPB.
Morocco
1. Based on the excellent performance of DXS F,
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