Effects of controlled feeding with low-CP feed on the growth and carcass quality of fattening pigs [Sus scrofa var. domesticus]
2006
Ikeda, S.(Tokyo Univ. of Agriculture (Japan)) | Suzuki, S. | Sukemori, S. | Kurihara, Y.
The present experiment aimed to examine the effects of controlled feeding (which is well known as a method for body fat deposition reduction) with low-CP feed on the growth and carcass quality of fattening pigs. Feed used in this study was prepared by reducing the CP level by 2.2% from the standard level during the fattening period according to the Japanese feeding standard for swine (1998), and by supplementing it with lysine. Eight crossbred pigs were used and they were divided into two groups having the same mean body weight as follows: a control group, ad libitum of low-CP feed and an experimental group, 85% controlled feeding of low-CP feed. The animals were fed in a temperature-controlled room at 25 +- 2 deg C using a single cage with feed and water every day. Feed intake, water drinking, and feces were determined every day. Body weight and body size were determined every week. Digestion trial was conducted in the last week. After slaughtering, carcass measurements and analysis of the chemical composition of the loin and the chemical character of the back fat were conducted.
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