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Energy Value of Sweet Potato Chips for Young Swine

The Pig Research Institute, Taiwan, P.O. Box 23 Chunan, Miaoli, Taiwan, Republic of China

Abstract

A comparative slaughter experiment was conducted to determine the energy values of sweet potato chips for young pigs. Sweet potato chips fed in addition to the basal diet significantly increased daily gain and improved the feed to gain ratio. The apparent digestibility coefficients (ADC) for dry matter and energy remained constant, but the ADC for nitrogen decreased with the addition of sweet potato chips. Digestible energy decreased significantly, while metabolizable energy and net energy remained constant with the addition of sweet potato chips. The average energy values for sweet potato chips, in kilocalories per gram of dry matter, were: gross energy, 4.024;digestible energy, 3.497; metabolizable energy, 3.377, nitrogen-corrected metabolizable energy, 3.332, and net energy, 2.020. Comparison of the net energy values of corn and sweet potato chips showed that the net energy of sweet potato chips is about 78.8% that of corn.