This study was conducted to assess the effect of the coccidiostat halo
fuginone (Stenorol) on growth, feed consumption, and survival of Chuka
r partridge. Halofuginone was fed to three replicates (14 chicks per r
eplicate) of chukar chicks from 2 to 7 d of age at levels of 0, 1.5 3.
0, 6.0, and 12 ppm. Mortality from 2 to 7 d was 0, a, a, II, and 21 bi
rds, respectively, by treatment. Seven-day body weight showed a signif
icant Linear decrease with increasing halofuginone level (P < 0.01). O
n the 7th d, replicates receiving 6.0 and 12.0 ppm halofuginone were t
ransferred to unmedicated feed for the remainder of the test due to ex
cessive mortality. The other groups were continued until 6 wk of age.
At 6 wk, chicks fed 6 or 12 ppm halofuginone from 2 to 7 d and then un
medicated feed did not differ in body weight from those fed the unmedi
cated control diet. A significant difference in mortality was not obse
rved among the other three treatment groups to 6 wk of age. A linear d
epression in 3-, 4-, 5-, and 6-wk body weight with increasing halofugi
none level was observed within the first three treatment levels (P < 0
.05). It was concluded that 1.5 ppm halofuginone depressed growth of y
oung chukars and that 6 ppm resulted in increased mortality.