PSVII-3 Influence of Season of Birth, Gender and Paternal line in Pigs. (7th December 2018)

• Record Type: Journal Article
• Authors: Lee, J; Yun, W; Kwak, W; Lee, C; Liu, S; Oh, H; An, J; Lee, D; Cho, J
• Is Part Of: Journal of animal science. Volume 96(2018)Supplement 3
• Page Start: 57
• Page End: 58
• Publication Date: 2018-12-07
• Subjects: Season -- Gender -- Parental line -- Pork grade -- Growth performance; Livestock -- Periodicals; Livestock; Electronic journals; Periodicals; 636.005
• DOI: 10.1093/jas/sky404.128
• Languages: English
• ISSNs: 0021-8812

Abstract

Abstract: This experiment was conducted to investigate the influence of birth season, gender (castrated male; female) and paternal line (Darby Duroc, DD; Darby genetics Inc., Anseong, Korea & Chookjin Duroc, CD; Rural development administration., Suwon, South Korea) on growth performance and carcass traits in pigs. A total of 2888 piglets [(Landrace x Yorkshire) x Darby or Chookjin Duroc] with average 3 weeks (wk) were used for 22 weeks during each season (spring=608, summer=404, fall=576 and winter=1300). Individual pig body weight (BW) was recorded, and feed consumption was recorded at 2 weeks, 12 weeks and 22 to determine growth performance. Also, after reaching the marketed weight, backfat thickness was determined at last rib and meat grade was divided by the criteria in slaughterhouse. In current experiment, there are no significant difference and interaction between gender and parental line on growth performance like average daily gain (ADG), average daily feed intake (ADFI) and Gain: Feed (G:F) ratio of pigs born in seasons. However, in fall and winter born pigs, females had greater body weight (BW; 8, 16 and final week; P<0.05), ADG, ADFI (fall: 0–8 wk, 8–16 wk and 0–22 wk; winter: 8–16 wk and 16–22 wk; P<0.05) and lower G:F ratio than castrated males. Also, the spring born pigs tended to have greater final BW and ADG compared to those of other seasons born pigs. In the carcass traits, pigs given CD line and castrated male pigs had greater backfat thickness (P=0.02, P=0.02) and Pork grade (P=0.001, P=0.008) than those of pigs given DD line and female pigs in the spring. In conclusion, temperature of spring and new parental line help to improve growth performance and carcass traits.