Assessment of stability and heritability of some growth traits and meat quality of the sire line TS3 after three generations
The objective of this study was to assessment of stability the performance and heritability of traits of the selected terminal sire line TS3 over three generations. The study was carried out at Binh Thang pig research and development Center, Dong Hiep Cooperative, Khang Minh An and Nhat Minh Company from 2017 to 2021.A total of 1121 individuals of TS3 pig line were used to test individual performance and measure the average daily gain (ADG), backfat thickness, loin depth (LD), intramuscular (IMF) traits by ALOKA SSD 500V ultrasound machine. Days for age to 100 kg (T100) and backfat thickness at 100kg (BF100) were corrected, lean meat (LM) and feed consumption ratio (FCR) were calculated. The results show that through three generations of selection, the terminal sire line TS3 is higher than the original generation in the investigated traits. Average weight gain, loin thickness, lean meat traits increased were 99g, 2.1mm, 1.8%, respectively; back fat thickness and feed consumption ratio traits decreased by 1.4 mm and 0.14 kg. The low coefficient of variation of the studied traits (<15%) showed that the terminal sire line TS3 was firm after three generations of selection. The heritability of age at 100kg weight, back fat thickness at 100kg, and fat percentage were 0.36, 0.52, 0.55, respectively. This result suggests that the potential for further improvement of these three traits through selection is very capable.
