Title: Effect Factors of Reproduction Performance and Carcass Quality in Yorkshire Pigs
Abstract: The study was designed to explore the effects of different parities,mating seasons on reproduction performance and live weight on carcass characteristics in Yorkshire. Statistical analyses were conducted on the birth weight and the total number born with variety of the season and the parity,the results showed that the litter size and birth weight had significant difference among the different parities. The litter size of 4st were significantly increased by 1. 02 and 0. 87 than 1st and 7th respectively,the birth weight of 1st,4th and 5th were significantly lower than 2nd and 3rd parity. Mating seasons had a marked effect on litter size of Yorkshire,the significant difference of litter size between summer,autumn and win-ter,and winter was the highest,which increased by 0. 63 and 0. 53,respectively. For carcass performance,results showed that the effects of slaughtering weight on the dressing percentage and the kidney weight reached an extremely significant level( P 0. 01) between 120 kg and 80 kg,100 kg of slaughter weight.Perirenal fat weight,fat percentage and bone percentage reached the significant level( P 0. 05),but other carcass traits were not significant( P 0. 05). In meat quality traits,the marbling score of 100 kg and 120 kg significantly increased by 0. 67 and 0. 65 than 80 kg respectively. The other meat quality traits did not make significant difference among the different slaughter weight( P 0. 05),only a slight difference of the Yorkshire. In this study,evidence showed that the parity and the season had a marked effect on the main reproduction ability of the Yorkshire. The live weight had a marked effect on the dressing percentage,fat percentage,bone percentage and marbling score.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
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