{'fraction_non_alphanumeric': 0.025896414342629483, 'fraction_numerical': 0.017928286852589643, 'mean_word_length': 5.360759493670886, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
COMBINED GENETIC EVALUATION OF PUREBREDS AND CROSSBREDS IN YORKSHIRE AND LANDRACE PIGS

For almost pig breeding programs, the genetic evaluation is predominantly based on purebreds. In some practical conditions, due to the effects of interaction by genetic and environment, the best purebred animals selected at nucleus herds are not sure to result in the best crossbred ones at the multiplier level. As indicated in some studies (Wei and Van Der Werf, 1994; Lutaaya et al, 2001; Lutaaya et al, 2002), goals of joint genetic evaluation include increased accuracy of prediction for purebreds, reciprocal recurrent selection for the improvement of crossbreds, and combined purebred and crossbred selection. The aim of this study is to estimate the genetic correlations between purebreds (Yorkshire and Landrace) and crossbreds (reciprocal Y x L); the breeding values and accuracy of prediction for number born alive, 21 days-litter weight, days to liveweight 90kg, and backfat thickness at liveweight 90kg.