Linoleic acid metabolic pathway allows for an efficient increase of intramuscular fat content in pigs

Table 7 Expected response per generation in body weight (BW), backfat thickness (BT) and intramuscular fat (IMF) to selection for BW, BT, IMF at restricted BT (ΔBT = 0) and C18:2 (mg/g of dry muscle) on a basic pig breeding scheme when records used for selection were taken only on the selected traits or on all traits ^a

^aThe breeding scheme consisted of one selection stage resulting in the top 25% males and 50% females of the offspring of 40 boars and 400 sows (ratio of 1 boar to 10 sows). Two males and two females from the offspring of each sow were performance-tested for BW and BT and three paternal half-sibs of different dams were used for IMF and C18:2 determinations. Pigs were selected for one trait at a time, but using the records taken only on the traits included in the selection criterion or in all traits
^bResponses in percentage relative to responses to selection for IMF (0.39 kg, 0.21 mm and 0.40%, for BW, BT and IMF, respectively), which are set to 100
^cResponses in percentage relative to responses to selection for IMF (1.51 kg, 0.88 mm and 0.46%, for BW, BT and IMF, respectively), which are set to 100

ISSN: 2049-1891