Effects of Glutinous Purple Rice (Oryza sativa L.) on Performance, Plasma Cholesterol and Carcass Quality of Growing-Finishing Pigs
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Abstract
Thirty crossbred pigs (Large white x Landrace x Duroc) with average initial weight of 30 kg were assigned to 3 dietary treatment groups (10 pigs per group) in a Completely Randomized Design (CRD). Pigs were fed diets containing different energy sources ad libitum. Group 1, pigs were fed basal or control diet (corn and cassava chip). Group 2 and 3, pigs were fed diets containing white broken rice and purple broken rice, respectively. They were raised until reaching 100 kg live weight and then slaughtered. The results showed that group 3 tended to be higher in feed intake and growth performance than the other 2 groups (P>0.05). The cholesterol, triglyceride, HDL, VLDL and LDL content in plasma of all groups increased with the increasing age. For the 3rd period of plasma analysis at 79 kg live weight, group 3 pigs had lower cholesterol and LDL content in plasma than the other 2 groups (P<0.005 and P<0.03, respectively). In addition, group 3 tended to have higher slaughter weight than group 1 and had higher hot carcass weight than the other 2 groups (P>0.05). Carcass characteristics in Thai style cutting was not statistically different among groups (P>0.05). In contrast, the US style cutting of group 3 had higher LD percentage than group 2 (P<0.05), while groups 2 had the highest percentage of spare ribs among groups (P>0.05).
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