The effect on the growth performance of pigs using only dried feed made from by-products of food processing
2008
Wang, Y.(Nihon Univ., Fujisawa, Kanagawa (Japan)) | Suzuki, M. | Fukuyama, Y. | Sayeki, M. | Niwa, Y. | Abe, A.
A feeding experiment was carried out to examine the difference in growth effects between formula feed and dried fermented feed that came from by-products of food processing. Dried fermented feed was made from 5 kinds of wastes which contained bread (40%: w/w fresh matter), cooked rice (30%), vegetables (15%), dried Tofu cake (10%) and fish residues (5%). Then the feed was mixed with supplementation of Bacillus spp. strain and dried for five hours at 80degC. All steps have been done by Chuohkanse Co. Ltd. (Atsugi, Japan). In the experiment, 28 WLD and 6LD pigs were fed in six pens. Each of these pens had five to six pigs. The pigs in the experiment were divided into two groups and were provided the two different feeds. The pigs had ready access to the feed and water. The weight of the pigs and the weight of any remaining feed were checked once a week. Also the water content, the levels of crude protein, crude fat, total fiber, amino acid and mineral content in the feed were monitored. After slaughtering, carcass measurements and analyses of the fatty acids composition were conducted. The results showed that the feed intake in the experimental group were significantly inferior (control 0.87kg/day, experiment 0.40kg/day) due to the inferior preference of the fermented feed, while the meat from the experimental groups was highly evaluated because of much fat content in the muscles. From a commercial viewpoint, the results indicate that fattening pigs using fermented feed from by-products of food processing may be a possibility because this feed is cheaper than formula feed.
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