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KMID : 1025520000420040423
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Journal of Animal Science and Technology
2000 Volume.42 No. 4 p.423 ~ p.432
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Identification of DNA Markers Associated with Average Daily Gain(ADG) in Yorkshire Pig
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Abstract
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This study was conducted to develop DNA markers related with average daily gain (ADG) using 27 pigs. Animals were divided into two groups: low ADG group had 11 pigs with 1.5 SD and high ADG group was consisted of 16 pigs with +1.5 SD. Initially, we choose and tested 78 microsatellites which could contain potential DNA markers for ADG. Part of the microsatellites were amplified by the polymerase chain reaction (PCR) and then electrophoresed on a agarose gel followed by the allelic, genotypic and statistical analysis. According to the alleic frequency analysis, 21 DNA polymorphisms were detected from 17 microsatellites and appeared to be associated with ADG (P$lt;0.05). From the genotypic frequency analysis, 14 DNA polymorphisms were found from II microsatellites and were associated with ADG. All pigs in the low ADG group had a 135:144 hetero type for the SWR308 marker, whereas all pigs in the high ADG group had a 144:144 homo type. This and possibly other selected markers could be useful for the selecting young pigs with an excellent growth potential.
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KEYWORD
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