AI Article Synopsis
- The study aimed to identify phenotypic variations in tick infestation levels among Argentine Creole cattle, focusing on 179 heifers over a four-year period.
- The results revealed that the breed demonstrated a high resistance to tick infestation, with an average resistance level of 99.3%.
- Furthermore, while previous nutritional conditions didn't impact tick response, weight gain correlated negatively with tick charge, suggesting that this breed is a promising option for breeding in tick-prone areas.
Article Abstract
The objective of this work was to characterize the Argentine Creole cattle breed through the identification of individual phenotypic variations in the levels of infestation with Rhipicephalus (Boophilus) microplus. We evaluated 179 heifers exposed to successive artificial infestations from 2015 to 2018, achieving a total of 663 observations. Tick counts were assessed with the linear mixed model, considering year of evaluation, time of infestation, dam's age and nutritional status during the evaluated period as fixed effects. The average tick count value obtained allowed to classify the breed as highly resistant to the tick charge (99.3%). Although the previous nutritional condition of the animals did not affect the individual charge response, weight gain during the trial showed a significantly negative correlation. We conclude that the Argentine Creole breed is an attractive genetic alternative for cattle breeding in endemic regions, either as a pure breed or a cross-breed.
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| http://dx.doi.org/10.1016/j.ttbdis.2023.102223 | DOI Listing |
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