Integrating morphometric traits, body scores, and SNP markers to evaluate dromedary camels for production traits

The investigation presents a pragmatic methodology for assessing camels based on morphometric characteristics, body scores, and genomic information. The study comprised ۸۷ dairy camels, including ۶۲ Pakistani and ۲۵ Iranian she-camels, which were assessed by three experts using ۲۳ morphometric measurements, with scores out of ۱۰۰ being awarded. In addition, genetic evaluation was conducted using markers associated with growth traits, with ۶۰ SNPs being genotyped in ۲۲ elite male calves. Pin width, depth, and chest circumference were found to be significantly greater in Pakistani she-camels (mean body score of ۷۶.۷۱ ± ۱۲.۳۱) compared to Iranian she-camels (mean body score of ۵۷.۱۲ ± ۱۰.۰۳) (p<۰.۰۵). The two she-camel groups were separated into distinct clusters based on principal component analysis of the morphometric characteristics. Moreover, the genetic analysis of SNPs (۲۵% of the investigated records) confirmed that genetic differentiation between the two groups in terms of growth traits was significantly different (p<۰.۰۵). As a practical approach, the male calves were first evaluated based on maternal body score and milk ability; they were then evaluated based on growth-related SNPs. The findings suggest that morphometric data and body scores can be a suitable approach for evaluating dromedaries for milk production in extensive and semi-extensive systems. Additionally, the selection of male camels based on genetic markers related to growth traits can be effective due to natural mating.

کلیدواژه ها:

body score ، dromedary ، Growth ، morphometric traits ، SNP|