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題名 | 不同品種與屠宰體重肉豬之生長性能、屠體性狀及體脂蓄積能力之探討=The Growth Performance, Carcass Characteristics and Body Fat Accumulation for TLRI Black Pig No.1 and LYD Pig at Different Slaughter Weights |
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作者姓名(中文) | 蘇天明; 劉建甫; 蔡金生; 廖宗文; 盧金鎮; | 書刊名 | 畜產研究 |
卷期 | 38:4 民94.12 |
頁次 | 頁247-257 |
分類號 | 473.6 |
關鍵詞 | 畜試黑豬一號; LYD肉豬; 屠體性狀; 屠宰體重; 脂質生成酵素活性; TLRI black pig No.1; LYD pig; Slaughter weight; Adipocyte diameter; Lipogenic enzyme activities; |
語文 | 中文(Chinese) |
中文摘要 | 試驗旨在比較畜試黑豬一號(TLRI black pig No.1, TBP)及LYD肉豬之生長與屠體性能,以及脂質蓄積能力差異。採用平均體重50 kg的TBP64頭及LYD32頭,飼養至105 kg及120 kg二種不同屠宰體重組,豬隻達屠宰體重時逢機選取半數屠宰,測定屠體性狀,並採集第10-11肋骨間之皮下脂肪組織(Subcutaneous adipose tissue, SAT),測定脂肪細胞直徑與脂質合成相關酵素活性。結果顯示,TBP在試驗期間的日增重及飼料效率較LYD差(P<0.001),屠體脂肪率(P<0.05)及背脂厚度(P<0.01)較高及厚,瘦肉率(P<0.001)、腰眼面積(P<0.01)和背最長肌(Longissimus muscle, LM)重量(P<0.001)則較LYD小,SAT的脂肪細胞直徑(P<0.01)及葡萄糖-6-磷酸去氫酶活性(G-6-PDH; P<0.01)較LYD為大及強。屠宰體重(Slaughter weight, SW) 105 kg組豬隻的日增重(P<0.05)及飼料效率(P<0.05)均較SW 120 kg組大,屠體長度(p<0.001)、背脂厚度(P<0.01)、腹脂厚度(P<0.01)、腰眼面積(P<0.05)、LM重量(P<0.001)及脂肪率(P<0.01)則均隨著SW增加而提高,而背脂厚度有較SW 120 kg組為薄的趨勢,SAT的脂肪細胞直徑(P<0.1)及G-6-PDH活性(P<0.05)亦隨著SW增加而增強。 |
英文摘要 | The aim of this study was to compare the growth, carcass characteristics and body fat accumulation of TLRI black pig No.1 ([Taoyuan×Duroc]×Duroc, TBP) and LYD pigs ([Landrace×Yorkshire]×Duroc, LYD). A total of 64 TBP and 32 LYD pigs, half barrows and half gilts, were assigned to two slaughter weight (SW) groups (i.e. 105 and 120 kg) when their body weight (BW)was about 50 kg. when they reached the SW, half of the pigs were randomly chosen for slaughtering. The subcutaneous adipose tissue (SAT)between 10th and 11th rib was collected for measuring adipocyte diameter (AD) and lipogenic enzyme activities. The results indicated that TBP had smaller (P<0.001) average daily gain (ADG) and feed efficiency (gain/feed, G/F) than those of the LYD. TBP had higher carcass fat percentage (P<0.05) and thicker BF (P<0.01), smaller loin eye area (LEA, P<0.01) and Longissimus muscle (LM0 weight (P<0.001) and lower lean percentage (P<0.001) than the LYD pigs. The AD and glucose-6-phosphate dehydrogenase activity (G-6-PDH) of TBP’s SAT was significantly (P<0.01) longer and higher than those of the LYD pigs. The SW 105 kg pigs had larger (P<0.05) ADG and G/F when compared with SW 120 kg pigs. The 120 kg group pigs had longer carcass length (P<0.001), thicker BF (P<0.01) and bellyfat thickness (P<0.01), larger LEA and LM weight (P<0.05) and higher (P<0.01) fat percentage than the SW 150 kg group. A higher G-6-PDH activity in fat tissue was detected for TBP when compared to LYD. The heavier SW pigs had larger AD (P<0.1) and higher (P<0.05) G-6-PDH activity. The results indicated that fat accumulation and synthesis was easier in TBP than those in LYD pig at the BW from 90 to 120 kg. |
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