|J. Chin. Soc. Anim. Sci. 37(Suppl.)|
陳佳萱(1) (3) 顏念慈(1) 陳裕琪(1) 許晉賓(2) 王治華(2) 張慕慈(3) 黃鈺嘉(1) 黃木秋(3) 吳明哲(1)
SELECTION FOR NEW BREED OF TAIWAN DUROC PIGS: REPRODUCTION PERFORMANCE OF F1 HYBRID
C. H. Chen,(1) (3) N. T. Yen, (1) Y. C. Chen,(1) J. B. Hu, (2) J. H. Wang(2) M. T. Chang(3) Y. C. Huang(1) M. C. Huang(3) and M. C. Wu(3)
(1)Livestock Research Institute, Council of Agriculture, Executive Yuan (2) Kaohsiung Animal Propagation Station, Livestock Research Institute, Council of Agriculture, Executive Yuan (3)Department of Animal Science, National Chung Hsing University
Duroc pig is a low reproductive performance breed, the average litter size was 8.7 at birth. The Duroc was preferably used to be terminal sire in pig industry. For this reason, a selection for increasing the reproductive performance in Duroc was carried out. The purpose of this study was to foster new excellent breed with appearance of Duroc, high reproductive performance and high production of seminal fluid. We hope that a high reproductive performance with red color of Taiwan Duroc can be obtained. Thirty-three gilts collected from 7 breeding farms were hybridized with black boars derived from Kaohsiung Animal Propagation Station. The genotype of ESR gene was MM type in the boars. The data of growth and reproductive records of offspring were collected from 25 pregnancies and birth s for the evaluation. The results showed that the total number of piglets born (TNB), total number of piglets born alive (NBA), birth weight (BW), weight at 21 days (W21), number of teats at left, number of teats at right, total number of teats were 8.4±2.97, 7.64±2.98, 1.81±0.41, 6.52±1.23, 6.57±0.62, 6.63±0.66 and 13.08±1.68, respectively.
Key Words: Duroc, Selection, Hybrid