Abstract

BERDUGO-GUTIERREZ DMV, MSC, PHD(C), Jesús Alfredo et al. Differences in polymorphisms of genes associated with follicle development control between buffaloes (Bubalus bubalis) and cattle (Bos indicus). Ces. Med. Vet. Zootec. [online]. 2019, vol.14, n.3, pp.53-63. ISSN 1900-9607.  https://doi.org/10.21615/cesmvz.14.3.5.

Associations have been found between genetic polymorphisms and reproductive parameters, this approach additionally would allow us to propose explanations to the phenomena studied. FSHr, InhA, AMH and AMHr are genes associated with follicular development, which have a high homology and the same function in bovines. The objective of this work was to evaluate if some polymorphisms described in other species associated with reproductive parameters are found in two closely related bovines. During 2018, in the Colombian Magdalena Medio anticoagulated blood samples from 50 buffaloes (Bubalus bubalis) and 50 commercial zebu cows (Bos indicus) were taken. All animals without anatomical abnormalities and similar weight and age were taken and the. parity, intercalving period and age at first calving were also recorded. DNA were extracted using Salting out method and the reported polymorphisms of the above mentioned genes were evaluated. Data were compared using Mann Whitney test and p<0.05 value were considered significant. Buffaloes have lower AMH levels, age at first calving, calving interval than Bos indicus cows (p<0.001) and higher parity (p=0.005). The polymorphisms reported in Holstein and humans were not confirmed in any of the samples and species analyzed. The results, are in some way paradoxical because there are differences in reproductive parameters but nothing different in the studies genes. It shows the need to rethink the approach of the study of the association of reproductive and genetic phenomena

Keywords : AMH; AMHr; Buffaloes; FSHr; InhA; Polymorphisms.