Effects of levan-type fructan on growth performance, nutrient digestibility, diarrhea scores, fecal shedding of total lactic acid bacteria and coliform bacteria, and fecal gas emission in weaning pigs.

BACKGROUNDThe use of antibiotics as growth promoters in feed has been fully or partially banned in several countries. The objective of this study was to evaluate effects of levan-type fructan on growth performance, nutrient digestibility, faecal shedding of lactic acid bacteria and coliform bacteria, diarrhoea scores, and faecal gas emission in weaning pigs. A total of 144 weaning pigs [(Yorkshire x Landrace)xDuroc] were randomly allocated to four diets: corn-soybean meal-based diets supplemented with 0, 0.1, 0.5, or 1.0g kg(-1) levan-type fructan during this 42-day experiment. RESULTSDuring days 0 to 21 and 0 to 42, average daily gain and average daily feed intake were linearly increased (P<0.01) with increasing dietary levan-type fructan inclusion. The apparent total tract digestibility of dry matter, crude protein, and gross energy were linearly increased (P<0.001) with increasing dietary levan-type fructan content. With increasing levels of levan-type fructan, faecal lactic acid bacteria counts were linearly increased (P=0.001). CONCLUSIONThe results indicate that dietary supplementation with increasing levan-type fructan enhanced growth performance, improved nutrient digestibility, and increased faecal lactic acid bacteria counts in weaning pigs linearly. (c) 2017 Society of Chemical Industry