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63.台灣杜洛克豬級進世代之生長性狀

陳佳萱(1) (2) 顏念慈(1) 陳裕琪(1) 許晉賓(3) 王治華(3) 張慕慈(2) 黃木秋(2) 吳明哲(1)

(1)行政院農業委員會畜產試驗所、(2)國立中興大學動物科學系、 (3)行政院農業委員會畜產試驗所高雄種畜繁殖場

本試驗旨在調查台灣杜洛克豬級進育種後裔之生長性狀。參試豬隻包括R1公豬（D 50% × K 50%）58頭、R2（D 75% × K 25%,）公豬35頭與R3代（D 87.5% × K 12.5%）公豬40頭、母豬35頭。生長性狀包括70日齡體重、150日齡重、日增重、背脂厚度及飼料效率。結果顯示R1、 R2、R3代公豬及R3代母豬之70日齡體重（平均 ± 標準偏差）分別為30.8 ± 3.8、29.7 ± 3.8、29.9 ± 3.4及30.4 ± 3.4公斤；150日齡重分別為94.1 ± 9.7、95.0 ± 13.3、95.6 ± 10.6及86.1 ± 7.6公斤；日增重則分別為0.80 ± 0.11、0.82 ± 0.15、0.83 ± 0.12及0.71 ± 0.09公斤；飼料效率分別為2.65 ± 0.26、2.66 ± 0.36、2.63 ± 0.40及2.83 ± 0.37；三點平均背脂厚度分別為1.96 ± 0.21、2.02 ± 0.22、2.12 ± 0.16及2.06 ± 0.18公分。綜合R1至R3代公豬之生長表現，皆無顯著差異，故下一世代將以公豬完檢體重達到110公斤以上，母豬90公斤以上作為選留標準。

關鍵語：台灣杜洛克、級進育種、性能

THE GROWTH PERFORMANCE OF TAIWAN DUROC HYBRIDS FOLLOWED BY UPGRADING BREEDING

C. H. Chen,(1) (2) N. T. Yen, (1) Y. C. Chen,(1) C. B. Hsu, (3) C. H. Wang(3) M. T. Chang(2) M. C. Huang(2) and M. C. Wu(1)

(1)Livestock Research Institute, Council of Agriculture, Executive Yuan

(2)Department of Animal Science, National Chung Hsing University

(3) Kaohsiung Animal Propagation Station, Livestock Research Institute, Council of Agriculture, Executive Yuan

The purpose of this study was to investigate the performance of the Duroc hybrids in upgrading breeding programs. In this study, we used 58♂ R1 (D 50% × K 50%) , R2 35♂(D 75% × K 25%,) and R3 (D 87.5% × K 12.5%) 40♂, 35♀. we collected The body weight at 70 days old (BW70), The body weight at 150 days old (BW150), average daily gain from 70 days to 150 days (ADG), feed efficiency (FE) and backfat thickness (BF) as growth performance. Our results were the BW70 (mean ± SD), BW150, ADG, FE and BF of R1 male, R2 male, R3 male and R3 female were 30.81 ± 3.18, 29.66 ± 3.82, 29.90 ± 3.38 and 30.35 ± 3.37 kg, 94.07 ± 9.69, 95.01 ± 13.26, 95.58 ± 10.60 and 86.10 ± 7.64 kg, 0.80 ± 0.11, 0.82 ± 0.15, 0.83 ± 0.12 and 0.71 ± 0.09 kg, 1.96 ± 0.21, 2.02 ± 0.22, 2.12 ± 0.16 and 2.06 ± 0.18 cm, respectively. The preliminary results showed that there were no significant difference among the growth performances of R1, R2 and R3. Therefore the male and female hybrids in the next-generation of upgrading programs with BW150 more than 110 and 90 kg, respectively could be further selection.

Key Words: Taiwan Duroc, Upgrading breeding, Performance