International Journal of Poultry Science
1682-8356
1994-7992
Asian Network for Scientific Information
10.3923/ijps.2007.302.307
Tufarelli
V.
Dario
M.
Laudadio
V.
4
2007
6
4
The effect of xylanase enzyme supplementation and
particle-size in wheat (Triticum durum)-based diets was studied in
guinea broilers from 29 to 91 days of age. Weekly body weight, gain, feed
consumption and Feed Conversion Ratio (FCR) were determined. Was formed 4
groups, each fed: diet A (ground wheat with enzyme); diet B (ground wheat
without enzyme); diet C (ground wheat passed through 3 mm sieve, pelleted
and after crumbled with enzyme): diet D (crumbled wheat without enzyme).
The highest body weights values were recorded by guinea fowls fed diet C.
Birds fed diet B have shown low mean values of body weight. Subjects fed
diet C were obtained values of mean body weight different (p<0.05)
respect to subjects fed both unsupplemented diets. Between two diets
containing xylanase, even if prepared with different method, weren`t
recorded differences (p<0.05), even if subjects fed crumbled diets show
an increase of body weight in comparison to subjects that received ground
diets. Body weight gain of guinea broilers fed diet A and diet B were
recorded high values, with differences (p<0.05) in birds fed
supplemented diets. These differences weren`t observed between birds fed
diets B and D. Feed consumption showed that birds fed diets A and B
consume an higher amount of feed (p>0.05) compared to the diets C and
D, regardless the supplementation of xylanase. Within every typology of
diet (ground versus crumbled) aren`t recorded differences (p<0.05) for
the presence or not of enzyme, even if between crumbled diets,
supplementation however has reduced feed consumptions. FCR of every diets
shown`t differences (p<0.05) among them, with values in guinea broilers
fed supplemented diets similar to data recorded in birds fed
unsupplemented diets. The supplementation of xylanase in a crumbled
wheat-based diet improved the growth performance of guinea fowl broilers.]]>