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Revista Computadorizada de Producción Porcina Volúmen 7 Número 3 (2000) The analysis of variance showed no significant (P>0.10) effect of period in any of the evaluated indices. In consequence, the analysis of variance was conducted by the conventional procedures (Steel and Torrie 1980). Digestibility indices. Total tract digestibility values of diets formulated to contain a high proportion of Jerusalem artichokes determined a significant (P
Revista Computadorizada de Producción Porcina Volúmen 7 Número 3 (2000) These results cannot indicate that probably a substantial amount of energy disappearing from the pig’s gastrointestinal tract could be in form of end-products of bacterial activity when the animals were given Jerusalem artichokes, due to the fact that fructose polymers in the tubers can not be hydrolyzed by mammal enzymes (Graham and Amman 1986). Therefore, it is possible that differences in net energy from both diets should be substantially different. Nevertheless, the design of the current experiment could not support this hypothesis. N balance. The same general trend found in the energy balance was observed in retention of N (table 4) by pigs. N retention, expressed as the percentage of dietary N was significantly lower (P
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