Effect of tmeperature of wet feeding on the feeding behavior and growth of piglest

摘要

The present study examined the effect of temperature of wet feed on the feeding behavior, growth and digestibilities of piglest fed under the natural temperature condition. Three hogs and 6 female piglets (crossbred: Dekalve) were used. The feeds with different temperatures (15 deg C, 20 deg C and 25 deg C) were prepared, of which ratio of water to feed was 2:1. The piglets were devided into three groups equally. They were penned individually and the feed, which was equivalent to 6-8 percent of body weight per day, was provided twice a day. Growth test was carried out from 35 days old to 75 days old, and the feeding behavior was observed for 5 days at the following mean body weight: 10kg, 20kg and 30kg. Digestibility was determined with the indicator method of Cr_2O_3 from 28th to 32nd day of the experiment. Environmental temperature changed in the range of 17 to 25 deg C, and the mean temperature was 21.6 deg C. Body weight gain and feed intake amount of 15 deg C treatment group tended to be higher than the other 2 groups. Feed efficiencies of 15 deg C and 20 deg C treatment group showed the significantly higher values than that of 25 deg C treatment group. Feed intake time and feed intake amount/min. showed short time and high level, respectively, in 15 deg C and 20 deg C treatment groups at each growth stage. digestibility was not affected by feed temperature.