Based on the Lo et al. (1997) model, this study points
out differences in the genetic determinism between mule
duck parental lines. Most overfeeding ability traits and
fatty liver or muscle quality traits are more heritable
in the common line than in the Muscovy line. Thus,
except for meat and liver color which have similar heritabilities
on common and Muscovy lines, traits related
to fattening (fatty liver weight, liver lipid content,
PM skin and subcutaneous fat weight, abdominal fat
weight), to muscle development (PM muscle weight,
thigh and shank weight, and carcass weight) and above
all to BW have heritability values from 2 to 4 times
greater on the common line than on the Muscovy line.
This study also demonstrated that liver quality traits
are more heritable than meat quality traits (apart from
the muscle lipid contents). Fortunately, the processing
industry is mainly facing problems in liver quality, such
as too high of a melting rate, than in meat quality.
Based on the Lo et al. (1997) model, this study points
out differences in the genetic determinism between mule
duck parental lines. Most overfeeding ability traits and
fatty liver or muscle quality traits are more heritable
in the common line than in the Muscovy line. Thus,
except for meat and liver color which have similar heritabilities
on common and Muscovy lines, traits related
to fattening (fatty liver weight, liver lipid content,
PM skin and subcutaneous fat weight, abdominal fat
weight), to muscle development (PM muscle weight,
thigh and shank weight, and carcass weight) and above
all to BW have heritability values from 2 to 4 times
greater on the common line than on the Muscovy line.
This study also demonstrated that liver quality traits
are more heritable than meat quality traits (apart from
the muscle lipid contents). Fortunately, the processing
industry is mainly facing problems in liver quality, such
as too high of a melting rate, than in meat quality.
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