Most animals (63.25 %) obtained a marbling score of 2 while 19.27 % obtained a
score of 1. Marbling score was not affected by all the studied factors (P>0.05). Sex had a
significantly stronger effect on hot and chilled carcass mass (P<0.01): averages for both hot and
chilled carcass masses of males were greater than those of females. All studied traits (P<0.05),
except chilling loss (P>0.05), were influenced by age. Averages of both hot and chilled carcass
mass, both in kg and in proportion of animals with 3 yrs age were higher, but not statistically
different from those of 4 yrs animals. Most traits were significantly affected by final live mass
(P<0.01). As the final live mass increased, both hot and chilled carcass mass in kg and as a
fraction increased, and chilling loss both in kg and as a fraction decreased.
Keywords
Carcass traits, Fattening dairy cattle, Thailand
INTERNATIONAL JOURNAL OF AGRICULTURAL TECHNOLOGY
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