Effects of dietary supplementation of Jerusalem artichoke (Helianthus tuberosus L.) on performance of weaning pigs and manure ammonia nitrogen concentration

บทคัดย่อ

One hundred ninety-two weaning pigs equal sex , 21 d of age were fed diets containing 0, 1, 2 or 3%raw Jerusalem artichoke (JA) tubers for 5 weeks. Feed intake, total weight gain and average daily gain (ADG) werenot significant affected by diets but showed trend increasing in ADG and decreased in feed in take. Feed efficiencywas significantly (P<0.05) affected by the addition of JA to the diets. The weaning pigs fed the diets containing JAhad significantly (P<0.05) decreased ammonia nitrogen in their manure; pigs receiving the 3% JA diets had thelowest ammonia nitrogen for all periods of testing (1,2,3 and overall1-3wk periods). Addition of 3% JA in theweaning diet is benificial in increasing weight gain and reduced ammonia nitrogen or odour of manure.