New Zealand Journal of Agricultural Research abstracts
Utilisation of growing-finishing pig diets containing high levels of solvent or
expeller oil extracted canola meal
T. S. BRAND
Elsenburg Agricultural Research Centre
Private Bag X1
Elsenburg 7607, South Africa
D. A. BRANDT
C. W. CRUYWAGEN
Department of Animal Science
University of Stellenbosch
Private Bag X1
Matieland 7602, South Africa
Abstract Canola meal (CM) from the solvent and expeller oil
extraction processes was used as replacement for fishmeal in grower-finishing
pig diets in two separate experiments. Diets were formulated on an iso-nutrient
basis (approximately 13.6 MJ kg-1 DE, 160g kg-1 CP,
9.0 g kg-1 lysine, 6.5 g kg-1 methionine and
cystine, 6.5 g kg-1 threonine, 2.0 g kg-1 tryptophan on
DM basis) to contain 0 g kg-1, 80 g kg-1, 160 g
kg-1, and 240 g kg-1 CM in the first (solvent process)
and 0 g kg-1, 97 g kg-1, 195 g kg-1, and 292 g
kg-1 CM in the second (expeller process) case. In Experiment 1, 13
pigs per diet were individually housed and fed ad libitum from 25.4 kg
to 84.4 kg liveweight, whereafter pigs were slaughtered and carcass
characteristics determined. In Experiment 2, randomly selected groups of 4 pigs
(16 per diet) were fed ad libitum from 21.6 kg to 88.4 kg liveweight,
whereafter pigs were slaughtered and carcass characteristics measured. The
inclusion of CM in the diets at levels of up to 24% in Experiment 1 and 29.2%
in Experiment 2 had no significant effect on dry matter intake (DMI), feed
conversion ratio (FCR), or liveweight gain. In Experiment 1, P2 backfat
thickness was significantly lower and percentage of meat in the carcass was
significantly higher in the 24% CM diet group. In Experiment 2, dressing
percentage was significantly lower in the 29.2% CM diet group. It was concluded
that canola meal from recently released cultivars may be included at higher
than conventional proposed levels (12-18%) in grower-finisher pig diets without
any detrimental effect on growth performance and minor effects on carcass
characteristics.
Keywords canola oilcake meal; inclusion rates; pigs;
production
New Zealand Journal of Agricultural Research, 2001, Vol. 44: 31-35
0028-8233/01/4401-0031 $7.00/0 (c) The Royal Society of New Zealand
2001
PDF file of entire paper: medium quality (353K); (scanned from paper original: notes about this process)
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