New Zealand Journal of Agricultural Research abstracts
The effect of feed enzyme supplementation on the performance of meat-chickens
fed enzyme-responsive barley- and wheat/maize-based diets
R. D. KING
P. J. MOUGHAN
Monogastric Research Centre
Department of Animal Science
Massey University
Private Bag 11222
Palmerston North, New Zealand
Abstract The effect of a commercial feed enzyme complex on
the performance of meat-chickens fed barley- and wheat/maize-based pelleted
diets was investigated using a variety of barley whose true metabolisable
energy (TME) was found to be responsive to enzyme addition and a feed grade
wheat and maize. Bioassays for TME of three varieties of barley and of wheat
and maize, showed Fleet barley to be responsive to enzyme addition at 100 ppm
(P < 0.01) and 200 ppm (P < 0.05). The
liveweight, liveweight gain, and feed conversion ratio of meat-chickens
receiving Fleet barley-based diets supplemented with an enzyme complex
(Roxazyme G) at either 0, 100, or 150 ppm or a wheat/maize-based dietary
control with no enzyme inclusion (W/M), was significantly improved by enzyme
addition.
Enzyme supplementation at 100 and 150 ppm of a W/M-based control diet had no
significant effect on the performance of meat-chickens grown to 39 days.
Use of feed enzymes may permit greater use of barley in meat-chicken diets and
is a strategy capable of conferring performance-enhancing effects in
appropriate circumstances.
Keywords Feed enzymes; barley; meat-chicken performance; true
metabolisable energy
New Zealand Journal of Agricultural Research, 1998, Vol. 41: 395-403
0028-8233/98/4103-0395 $7.00/0 (c) The Royal Society of New Zealand
1998
PDF file of entire paper: medium quality (710K); (scanned from paper original: notes about this process)
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