肥育期餵飼高纖維飼糧對黑豬肉質之影響

本研究旨在探討肥育期餵飼高纖維飼糧對黑豬肉質之影響。試驗選用32頭平均體重57.8 kg之雜交黑豬（含25%梅山豬75%杜洛克），閹公豬及女豬各半，逢機分置於對照組（粗纖維為3%）及高纖維飼糧組（粗纖維為14%），每處理四重複，每重複4頭，試驗期間飼料及飲水採任食，試驗至平均體重達117 kg時結束。試驗結束後每組犧牲12頭進行屠宰，並測定肉質品質。結果顯示，餵飼高纖維組之背最長肌肌肉水分含量顯著較對照組低（P < 0.05），而肌肉大理石紋評分及背脂色澤之a*與b*值則顯著較對照組為高（P < 0.05）。但背最長肌肌肉之風味、嫩度、多汁性及總接受性感官品評評分則顯著較對照組較低（P < 0.05）。背最長肌肌肉之蛋白質與脂肪含量、L*、a*及b*值、感官肉色與緊實度，背脂與背最長肌肌肉之堅實度及韌度於二處理組間並無顯著差異。綜合本試驗結果顯示，肥育期黑豬餵飼14%粗纖維飼糧雖有較高之背最長肌肌肉大理石紋評分及背脂之a*與b*值，但其背最長肌肌肉水分含量及各項感官評分卻較低。

關鍵字

黑豬；高纖維飼糧；肉質品質

並列摘要

The purpose of this study was to evaluate the effects of feeding with a high fiber diet on the meat quality of finishing black pigs. A total of thirty-two (16 barrows and 16 gilts) crossbred black pigs (25% Meishan × 75% Duroc) with an average body weight (BW) of 57.8 kg, were randomly divided into two groups which were fed with the control and high fiber diets, respectively. The crude fiber levels in the diets were 3% and 14%. Pigs were allocated into quadruplicate with 4 pigs in each pen. Water and feed were provided ad libitum. The experiment was terminated when the pigs weighed 117 kg. Twelve pigs from each group were sacrificed for meat quality analysis. The results showed that the moisture content of Longissimus dorsi muscle was significantly (P < 0.05) lower in the high fiber diet group. The marbling scores of the color values of a* and b* of backfat were higher (P < 0.05) in the high fiber diet group. In addition, the flavor, juiciness, tenderness and overall acceptability scores were significantly (P < 0.05) lower in the high-fiber diet group than in the control group. Besides, there were no differences in crude protein and fat, L*, a*, b* values, muscle color, firmness and color values of Longissimus dorsi muscle between groups. Although the high-fiber diets group had higher marbling score and backfat of redness (a*) and yellowness (b*) values of Longissimus dorsi muscle, the water content and sensory evaluation of Longissimus dorsi muscle were lower.

並列關鍵字

Black pigs ； High fiber diet ； Meat quality

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