The study aimed to investigate the genetic parameters of the reproduction traits of Korean Landrace and Yorkshire breeds. Three reproduction traits, namely age at first farrowing (AFF), total number of piglets born (TNB) and number of piglets born alive (NBA), were analyzed. Genetic parameters were estimated from individual datasets using a multiple-trait animal model in AIREMLF90 software. The heritability values for AFF, TNB and NBA were 0.07-0.14, 0.09-0.11 and 0.09-0.10, respectively. Strong genetic correlations existed between TNB and NBA (0.90 to 0.96). The genetic responses were identified no distinct trends for TNB-EBVs in Landrace and Yorkshire pigs prior to 2014, after which they displayed noticeable upward trends. 

770. Estimation of genetic parameters and trends of reproduction traits of Korean Landrace and Yorkshire pigs

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770. Estimation of genetic parameters and trends of reproduction traits of Korean Landrace and Yorkshire pigs