莱芜猪与杜长大三元杂交猪肉质性状种质资源比较研究

doi:10.11843/j.issn.0366-6964.2014.11.003

Abstract

Abstract:

The aim of this study was to accurately evaluate comprehensive meat quality characteristics of Chinese Laiwu pigs and western Duroc×Landrace×Yorkshire (DLY) three-way crossed pigs，and to estimate the effects of breed，sex and muscle tissues on meat quality traits.In this study，a total of 264 Laiwu pigs and 610 DLY pigs with similar slaughter weight were slaughtered in the same abattoir，and were then phenotyped for different meat quality traits including loin eye area(LEA)，pH，meat color，intramuscular fat content (IMF) content，marbling，moisture content and drip loss.The data showed that the coefficients of variation in IMF content and drip loss within either breed were above 30%，implying that the two characteristics could be improved to some extent by within-bred selection.Except LEA，Laiwu had better meat quality characteristics than that of DLY (P<0.01)，especially with regard to IMF and drip loss.The average IMF of Laiwu was 6-fold higher than that of DLY，and the average drip loss of Laiwu was only one-third of that of DLY.It suggested that introducing desirable genes from Laiwu into commercial pigs might greatly improve the meat quality of them.Compared to sows，castrated boars had higher IMF content (P<0.05).Sex had no significant effect on the other traits (P>0.05).Longissimus muscle (LM) showed higher marbling score and lower ultimate pH than semimembranosus muscle (SM).In addition，IMF was positively correlated with ultimate pH (P<0.05) and negatively associated with drip loss (P<0.05).In conclusion，the results of this study contributes to the further understanding of meat quality characteristics of Laiwu and DLY，and can be used as an important reference for future breeding programs for enhancing meat quality of these breeds.

CLC Number:

S828
S813.3

YANG Jie，ZHOU Li-sheng，LIU Xian-xian，MA Huan-ban，XIE Xian-hua，XIONG Xin-wei, HOU Li-juan，HUANG Yi-xuan，CHEN Cong-ying，MA Jun-wu. A Comparative Study of Meat Quality Traits between Laiwu and DLY Pigs[J]. ACTA VETERINARIA ET ZOOTECHNICA SINICA, 2014, 45(11): 1752-1759.

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A Comparative Study of Meat Quality Traits between Laiwu and DLY Pigs

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