Effects of Corn Cob-based Diets on the Levels of Nutritionally Related Blood Metabolites and Onset of Puberty in Mukota and Landrace×Mukota Gilts

  • Mashatise, E. (Department of Animal Science, University of Zimbabwe) ;
  • Hamudikuwanda, H. (Department of Animal Science, University of Zimbabwe) ;
  • Dzama, K. (Department of Paraclinical Veterinary Studies, University of Zimbabwe) ;
  • Chimonyo, M. (Department of Paraclinical Veterinary Studies, University of Zimbabwe) ;
  • Kanengoni, A. (Department of Paraclinical Veterinary Studies, University of Zimbabwe)
  • Received : 2004.09.22
  • Accepted : 2005.06.18
  • Published : 2005.10.01


The objective of this study was to determine the levels of nutritionally related blood metabolites, age and body weight at puberty in gilts fed on corn cob-based diet in Mukota and Landrace${\times}$Mukota crossbred gilts. Ten gilts of each of Mukota and crossbred genotypes were fed two diets for 14 weeks in a 2${\times}$2 (breed${\times}$diet) factorial treatment arrangement. A corn-cob based diet, designed to contain 2,304 kcal ME/kg, and a standard pig grower diet, were used. The corn cob constituted 20 percent of the total ration. Fortnightly, bodyweights and feed conversion ratios (FCR) were recorded. Blood samples were collected to determine blood glucose, urea and creatinine levels. The average daily bodyweight gain (ADG) in the Mukota was lower (p<0.05) than in the crossbred gilts. Crossbred gilts fed on the corn cob-based diet had lower (p<0.05) urea values from eight weeks from the start of the experiment (p<0.05) compared to Mukota gilts fed the same diet. There were no differences in blood glucose and creatinine concentrations between diets and genotypes. The lack of differences in the nutritionally-related blood metabolites suggest that corn cobs could be incorporated at 20 percent inclusion without compromising blood metabolite concentrations and age at puberty of the Mukota and Landrace${\times}$Mukota gilts.


Mukota;Landrace${\times}$Mukota;Blood Metabolites;Puberty;Corn Cobs


Supported by : University of Zimbabwe


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