Abstract
Aim:This study aimed to investigate the association of single nucleotide polymorphism of the myostatin (MSTN) and fatty acid-binding protein 4 (FABP4) genes on the total water, ash, fat, protein, and cholesterol contents of sirloin (gluteus medius muscle) and silverside (biceps femoris muscle) meats of cull female Aceh cattle.Materials and Methods:This analysis covered a total of 27 cull female Aceh cattle slaughtered at the Animal Slaughterhouse of Banda Aceh that was purposively selected based on hair color referred to the criteria described in the Decree of Ministry of Agriculture of the Republic of Indonesia. Genomic DNA was extracted from 25 mg of fresh meat using the spin column method before subjected to a polymerase chain reaction amplification using primer sets specific for 1346-bp and 275-bp fragments of MSTN and FABP4, respectively. A 4-h digestion reaction was done separately for the MSTN/HaeIII and FABP4/NlaIII loci genotyping. The total protein, ash, and fat of the meat were measured using the Indonesian National Standard (SNI) methods whereas its cholesterol content was determined using the AOAC method. The association between each polymorphism and the variation in meat chemical parameters was analyzed using the Pearson correlation test.Results:The results showed that the MSTN/HaeIII locus was polymorphic in Aceh cattle, but the FABP4/NlaIII locus was monomorphic. Meat chemical parameters were not influenced by different commercial cuts and MSTN genotypes, showing that there was no association between different commercial cuts, cattle hair colors, and MSTN/HaeIII and FABP4/NlaIII markers with the meat chemical parameters in Aceh cattle.Conclusion:These results suggest that focusing on the novel effects of MSTN and FABP4 gene polymorphisms on meat production traits might not be useful for marker-assisted selection in Aceh cattle.
Highlights
Interaction of one or more genetic polymorphisms with environmental factors is responsible for the inheritance of many economically desired traits of domesticated animals [1] such as higher production [2], reproduction [3], and disease resistance [4], as well as better adaptation to moisture, a hot tropical climate [5], low-quality food, and traditional farming [6]
The results showed that the MSTN/HaeIII locus was polymorphic in Aceh cattle, but the fatty acid-binding protein 4 (FABP4)/NlaIII locus was monomorphic
Meat chemical parameters were not influenced by different commercial cuts and MSTN genotypes, showing that there was no association between different commercial cuts, cattle hair colors, and MSTN/HaeIII and FABP4/NlaIII markers with the meat chemical parameters in Aceh cattle
Summary
Interaction of one or more genetic polymorphisms with environmental factors is responsible for the inheritance of many economically desired traits of domesticated animals [1] such as higher production (dressing percentage, meat quality, and milk result) [2], reproduction [3], and disease resistance [4], as well as better adaptation to moisture, a hot tropical climate [5], low-quality food, and traditional farming [6]. These traits of economic importance, are not concurrently inherited in animals. Searching for the genetic basis of the desired phenotypic variations followed by integrating the data obtained in the currently used conventional breeding selection might shorten the selection process of Indonesian beef cattle
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