Biotechnology in Animal Husbandry 2011 Volume 27, Issue 3, Pages: 769-776
https://doi.org/10.2298/BAH1103769P
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Results of selection for breast muscle percentage and feed conversion ratio in Pekin ducks
Pingel H. (Martin-Luther-Universität Halle-Wittenberg, Germany)
Increasing breast muscle percentage by selection for breast layer thickness
(muscle and skin) of living ducks by needle probe improves carcass quality as
could be demonstrated by experiments and by applied breeding programs. In
addition direct selection for individual feed conversion ratio can increase
the efficiency of duck meat production. Divergent selection for feed
conversion ratio from the age of 4 - 7 weeks over 11 generations has
differentiated the feed efficiency by about 25 %. Causes for the reduction in
feed conversion ratio are lower fat content of carcass, lower locomotor
activity, higher enzymatic activity (alkaline phosphatase and creatinkinase
in blood plasma) and better feed protein utilization. Because of lower feed
consumption in the line selected for lower feed conversion ratio the emission
of nitrogen and phosphorus via manure was reduced by about 39 and 26 %,
respectively. That means, selection for better feed efficiency is not only an
important economical but also an important ecological factor.
Keywords: duck meat, percentage of breast muscle, feed efficiency
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