MIguel Angel Gaytan

Dr. MIguel Angel Gaytan


Research Focus & Metrics

Academic Career Length

1Year (2026-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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23 March 2026 in Animals
Verified
Journal Article
Open access
PDF file
SMSilvestre Moreno-Avalos
Silvestre Moreno-Avalos
MGMIguel Angel Gaytan
MIguel Angel Gaytan
AZARACELY ZUÑIGA
ARACELY ZUÑIGA
FVFrancisco Gerardo Véliz-Romero
Francisco Gerardo Véliz-Romero
EDEdgar Díaz-Rojas
Edgar Díaz-Rojas
Francisco G. Véliz-DerasFrancisco G. Véliz-Deras
Francisco G. Véliz-Deras
One of the most important aspects of animal production is the reproductive behavior, where a widely used strategy in small ruminants is the “male effect”. However, the response to this effect can vary depending on several factors, including the social rank (SR) of both sexes. The objective of this study was to evaluate how SR influences morphometric and socio-sexual variables in Dorper sheep in Northern Mexico. Through behavioral tests, 33 rams and 59 ewes were divided into two groups taking into account their SR. Rams included high SR (HSR; n = 14) and low SR (LSR; n = 19), while ewes included HSR (n = 23) and LSR (n = 36). Morphometric response variables included age, live weight, body condition, thoracic circumference, wither height, presence of horns, and testicular circumference, whereas reproductive variables included estrus rate, ovulation rate, corpus luteum, left ovary, right ovary, pregnancy rate, and embryos’ number. The results showed no differences (p > 0.05) for the morphometric variables considered, whilst, regarding the reproductive variables, the LSR rams × HSR ewes group showed the highest number of embryos (p < 0.05), and the corpus luteum number was higher in the HSR rams × HSR ewes group (p < 0.05). However, no significant differences were found for the remaining variables (p > 0.05). Improving productive and reproductive performance can contribute to increased income for sheep farmers.