ArticleAnimal bioscience2026
Genetic associations of temperament and facial hair whorls with productive, reproductive, and carcass traits in Canchim beef cattle.
Article in Animal bioscience, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveThis study aimed to estimate genetic parameters and evaluate genetic correlations between temperament and facial hair whorl traits with productive, reproductive, and carcass traits in Canchim beef cattle.
methodsPhenotypic records of animals born between 2013 to 2022 were analyzed. Temperament was assessed using behavioral scores, including movement, tension, breathing, and vocalization. Reactivity was measured using accelerometers and flight time, while facial hair whorls were characterized by their presence, number, position, and height. Traits related to productivity, reproduction, and carcass characteristics included body weights, scrotal circumference, and ribeye area at different ages. Genetic parameters were estimated using single- and two-trait animal models.
resultsHeritability estimates ranged from low to high (0.09 to 0.67), indicating sufficient additive genetic variability for all trait groups. Positive genetic correlations were observed between body weight traits and temperament measures, particularly vocalization and flight time, in addition to correlations between ribeye area and reactivity flight time. Scrotal circumference at 12 and 18 months of age showed moderate to high genetic correlations with facial hair whorl traits, especially whorl number and position.
conclusionThe results indicate that selection for productive and reproductive traits may result in indirect improvements in temperament. Moreover, the pre-selection for the absence of facial hair whorls, along with the selection for body weight and scrotal circumference, may promote favorable genetic gains in temperament, supporting their inclusion into Canchim breeding programs.
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