An eighteen-week feeding trial was conducted to investigate the effect of feeding graded levels of
Wild Sunflower Forage Meal (WSFM) in isoproteinous diets on the growth and reproductive characteristics of
Anak 2000 broiler cocks at puberty. Two hundred and forty day-old broiler cock chicks were randomly allocated
to six dietary treatment groups of five replicates each, to make forty chicks per group. They were fed rations
containing WSFM at 0 (control), 10, 15, 20, 25 and 30% inclusion levels in a complete randomized design
experiment. The morphometric characteristics of the genitalia were studied from eight cocks per treatmental group
slaughtered at the pubertal age of 18 weeks. Live and carcass weights were significantly reduced by WSFM
inclusion levels above 10% in the ration. Dressing percentage, relative gizzard and heart weights were
independent of WSFM inclusion in the diets whereas relative liver weight was observed to show a significant
(p<0.05) decrease. The inclusion of WSFM had a significant (p<0.05) depressing effect on testes parenchyma
weight, testes width and volume. There were significant correlations of live weight and testes weight with testes
width, length and parenchyma weight as well as tunica albuginae weight, while the correlation of testes density
with other morphometric characteristics studied was low, negative and non-significant. It was concluded that
not greater than 10% WSFM could be included in the prepubertal broiler ration to substitute maize without any
adverse effect on growth and body weight. However, the male reproductive organ characteristics could be
negatively affected even at this inclusion level hence WSFM is not recommended on a poultry breeding station.