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69.賓朗豬與藍瑞斯豬雜交F1產仔性狀與F2生長性狀

陳裕琪⁽¹⁾顏念慈⁽¹⁾ 陳佳萱⁽¹⁾朱賢斌⁽¹⁾ 陳坤照⁽¹⁾ 張秀鑾⁽²⁾ 吳明哲⁽¹⁾

行政院農業委員會畜產試驗所⁽¹⁾ 國立屏東科技大學⁽²⁾

本試驗的目的是調查賓朗豬（U）與藍瑞斯豬(L)一代雜交種(LU與UL)自交的產仔性狀與其後裔之生長性狀。試驗收集LU母豬23頭與配2頭LU公豬共33胎與UL母豬3頭與配2頭UL公豬共3胎之產仔性狀，亦收集LU×LU組之後裔（LULU）女豬25頭生長性能資料及UL×UL組之後裔（ULUL）9閹公10母的70日齡體重。LU母豬與UL母豬分娩總仔數、分娩活仔數、三週活仔數、仔豬出生重及三週重分別為8.6與9.0頭、7.5與7.0頭、7.4與7.0頭、1.49與1.38 kg及5.52與 5.40 kg。LULU仔豬與 ULUL仔豬70日齡體重分別為22.1±0.9 kg與16.8±1.1 kg，LULU女豬150日齡重、日增重、背脂厚度及飼料效率分別為60.4 kg、0.48 kg、1.75 cm及2.87±0.48 (範圍為1.93~3.78)，初步結果顯示LULU 70日齡重較ULUL者顯著地重。

關鍵語：遺傳標記、產仔性狀、生長性狀

F1 REPRODUCTIVE AND F2 GROWTH PERFORMANCE OF  LANDRACE × PEINAN RESOURCE POPULATION.

Y.C. Chen⁽¹⁾ , N.T. Yen⁽¹⁾, C.H. Chen⁽¹⁾ , H.P. Chu⁽¹⁾, K.J. Chen⁽¹⁾ , H.L. Chang⁽²⁾ and M.C. Wu⁽¹⁾

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

National Ping Tung University of Science and Technology⁽²⁾

The purpose of this study was to investigate the reproductive performance of LU  sow and UL sow (F1 of L, Landrace and U, Peinan breed) which were mated with LU boar and UL boar in a crossbreeding resource population. A total of 23 LU sows and 2 LU boars were used to produce 33 LULU litters, and 3 UL sows and 2 UL boars were used to produce 3 ULUL litters. Reproductive performance had 36 litter F1 records. The growth performance data included on farm test performance of 25 LULU gilts and ULUL body weight at 70 days old of 9 young barrows and 10 gilts.  The results as following: The total litter size at birth, live litter size at birth, live piglets at 3 weeks, average piglet weight at birth and average piglet weight at 3 weeks for LU sows were 8.6, 7.5, 7.4, 1.49 kg and 5.52 kg, respectively, but for UL sows were 9.0, 7.0, 7.0, 1.38 kg and 5.40 kg, respectively.  The body weight at 70 days old of LULU and ULUL piglets were 22.1±0.9 kg and 16.8±1.1 kg, respectively. The body weight at 150 days old, average daily gain from 70 days to 150 days(ADG), average backfat (BF) and feed efficiency (FE) for LULU female offspring were 60.4 kg, 0.48 kg, 1.75 cm and 2.87±0.48 (range is 1.93~3.78), respectively. The preliminary results showed that body weight at 70 days old of LULU piglet was significantly heavier than ULUL piglet.

Key words: Genetic marker, Reproductive performance, Growth trait.