E. I. GOLDSMITH, J. MOOR-JANKOWSKI AND J. DAVIS 
1051 
During the fiscal year 9/1/70-8/31/71, the 
technical support received by LEMSIP investi- 
gators doubled as determined by the increase in 
the number of w^eekly average research proce- 
dures requiring assistance from our technical 
force (from 42 to 80 a v^eek — Figure 4) . This 
increase demonstrates in large part the 
increased sharing of animals among investiga- 
tors, whereas the size and turnover of the LEM- 
SIP animal colony has remained relatively sta- 
ble (Figure 5). This dramatic increase in v^ork 
performed upon an animal colony of constant 
size can be further interpreted as a reflection of 
increasing productivity. Efforts to encourage 
animal sharing had previously been successful 
to the extent that each animal was being used 
for an average of 3.9 programs per year in 1969 
and 1970. Hov^^ever, with the need to minimize 
expenses created by recent contraction of re- 
search budgets, we have seen an even more dra- 
matic rise in utilization to a present level of 6.5 
programs per animal per year (Figure 6) . 
LEMSIP PROGRAMS 
PRODUCTIVITY 
130— 
lao— 
I lO— 
loro 
so— 
BO— 
•70— 
BO— 
SO- 
SO— 
1J7O 19^1 ^ 
I9BS I9BE IBB7 IBSB I9B9 |^70 
PROGRAMS 
Figure 4. — Laboratory for Experimental Medicine & 
Surgery in Primates (LEMSIP). 
ISO- 
ISO— 
I 10— 
lOD— 
SO- 
ao— 
70— 
BO- 
SO— 
ao— 
SO- 
SO- 
10 — 
COLONY SIZE 
AIMIMAI. UTILIZATION 
(RESEARCH PROTOCOLS/ANIMAL/VEAR) 
70, 
'100 
1J70 iB^i ^ 
ISB5 I9BB I9B7 I9BB I9BS isf70 1971 
PRODUCTIVITY 
Figure 5. — Laboratory for Experimental Medicine and 
Surgery in Primates (LEMSIP). 
The concept of conservation of animals for 
ecologic as well as economic reasons is carefully 
regarded. Therefore, animals are rarely if ever 
destroyed except for compelling reasons when 
scientific information is to be gained by autopsy 
examination. Otherwise, when a particular 
study is completed, the animal is reassigned to 
another investigator and/or program, thus im- 
plementing our concept of sequential as well as 
simultaneous utilization. 
Figure 7 outlines an example of compatible 
multiple utilization of an experimental prepara- 
tion when care is taken in planning and execu- 
tion of the protocol to be sure that many inves- 
tigators benefit. This multiple participation is 
actively pursued by staff and Utilization Com- 
mittee members who, knowing of LEMSIP pro- 
grams are able to attract, advise, and assist 
other investigators in the fulfillment of their 
projects. When this concept was first instituted, 
