Abstract
ABSTRACT : The genetic polymorphism and relationships of Muscovy, Cherry Valley Meat ducks, Partridge ducks and their crossbreds F 1 and F 2 , respectively, were studied using a random amplified polymorphic DNA (RAPD) technique. The results showed that RAPD markers were effective for the analysis of genetic relationships among ducks. Amplification with 20-primers gave 760 reproducible amplified fragments. The percentage of polymorphic marker band was 74.70%, which indicates that the RAPD technique had higher efficiency of polymorphism detection and sensitivity in studying the genetic variations among ducks and showed that the genetic polymorphism was abundant between two species of duck populations. The average index of genetic distance in hybrid F 2 was 0.2341 and higher than that of its parents, which indicates that the genetic diversity was improved by crossbreeding with Muscovy. (Asian-Aust. J. Anim. Sci. 2006. Vol 19, No. 4 : 475-481) Key Words : Muscovy, Crossbred, RAPD, Genetic Diversity, Genetic Relationships * Corresponding Author: Y. Su. Tel: +86-759-2383250, Fax: +86--759-2383249, E-mail: ssyy925@tom.com
Highlights
Ducks, one of the avian species, have economic, social and ecological value in China, in southern parts of the country
The results of this study indicate that amplified DNARAPD bands were polymorphic and polymorphic frequency was 72.14%
The genetic diversity of total populations (Hsp) and the proportion of genetic variation (V) were 0.2953 and 0.4417, respectively. All these indicate that the genetic polymorphism was abundant, and the genetic variation existed in inter-populations
Summary
One of the avian species, have economic, social and ecological value in China, in southern parts of the country. It is an important genetic resource in China. Both Cherry Valley Meat and Partridge ducks are important domestic ducks that belong to Ares, Anseriforme, Anas domestica, Anas. Partridge duck has dark brown sparrow-colored feathers and reddish orange beak, shanks, webs and yellow skin. Better production performance Cherry Valley Meat ducks were, they were very fat. The genetic selection programme was established to reduce fat and increase lean meat in Cherry Valley Meat ducks
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