Abstract

Landrace pig for a couple of decades of farming since its introduction into the eastern part of China in 1960s has met great changes on reproduction characters, growth and development, carcass performance etc. Litter size born was averagely increased by 2. 9 heads (13. 2 vs 10. 3) , litter size born alive by 2. 4 heads (12.1 vs. 9. 7) which have shown a significant difference. Compared with the normal growth rate, body weight, lean meat percentage etc. at 6 months are all decreased (respectively 83. 2 vs 90 kg, 56. 1 vs 65%). However, the thickness of backfat is generally increased (2. 56 vs 1. 77 cm). It shows that the environmental effect of Taihu Lake Basin in China can produce the possible potentials of exotic pigs into localized characters and it also explains the cause of high fertility of Taihu pig breeds.
 

X. Zhuang

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 17. Genetics and breeding of dairy and beef cattle, swine and horses, , 432–435, 1994
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