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Asian-Australas J Anim Sci > Volume 14(12); 2001 > Article
Swine Nutrition and Feed Technology
Asian-Australasian Journal of Animal Sciences 2001;14(12): 1724-1727.
DOI: https://doi.org/10.5713/ajas.2001.1724    Published online December 1, 2001.
Influence of Maize Cob Inclusion Level in Pig Diets on Growth Performance and Carcass Traits of Mukota x Large White F1 Crossbred Male Pigs
M. Chimonyo, A. T. Kanengoni, K. Dzama
Abstract
A trial was conducted to evaluate the growth performance and carcass characteristics of LW Mukota F1 crosses when fed diets containing graded levels of maize cob meal. Sixteen LW Mukota F1 crossbred pigs of approximately 4.5 months of age, were randomly allocated to four diets that contained 0, 100, 200 and 300 g maize cobs/kg, which corresponded to 276.4, 360.3, 402.9 and 523.5 g NDF/kg, respectively. The pigs were fed ad libitum for 14 weeks. The diets were formulated to contain similar levels of energy (ca. 9MJ ME/kg) and protein (ca.160 g CP/kg). Average daily feed intake (ADFI), daily gain (ADG) and feed conversion ratio (FCR) were monitored for 14 weeks. At slaughter, the cold dressed weight (CDM) and backfat thickness (BFT) were determined. There was no significant linear relationship (p>0.05) between level of cob inclusion and ADFI. The ADG decreased as level of maize cobs increased (p<0.001). The pigs that were on 300 g cobs/kg had the highest FCR (p<0.05) as compared to pigs on the other three diets. No differences (p>0.05) were observed in the CDM between pigs that were fed diets that had 0 and 100 g maize cobs/kg. In addition, pigs on 100 and 200 g cobs/kg diets had the same CDM (p>0.05). The diet that contained 300 g cobs/kg gave the lowest (p< 0.001) CDM. Both BFT parameters showed a decrease (p<0.05) as level of maize cobs increased. An increase in CDM was associated with an increase in BFT (p<0.001), with the correlation coefficient between K7.5 and CDM being 0.84 (p<0.001). It can, therefore, be concluded that crossbred pigs perform well on diets containing up to 200 g/kg maize cobs.
Keywords: Maize Cobs; LW Mukota Crosses; Growth Performance; Carcass Traits


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