December 6, 2025AnimalsOpen Access

Physiological Responses and Pregnancy Rate of Black and White Holstein Heifers During Hot and Cold Seasons in a Desert Region

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Authors

LALeonel Avendaño-ReyesUniversidad Autónoma de Baja California MLMaría de los Ángeles López-BacaUniversidad Autónoma de Baja California PRP.H. RobinsonUniversity of California, Davis

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Implication

Observational analysis showed variations in physiological traits in Holstein heifers, suggesting coat color and season have limited effects on pregnancy outcomes.

Key Points

Pregnancy rates remained unaffected despite differences in physiological responses between heifers.
Among physiological traits, both glucose and triglycerides showed seasonal variance in heifers.
Body surface temperatures were monitored using thermography, highlighting the impact of ambient conditions.
Cortisol and progesterone levels were found to be elevated during hotter summer months.

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Avendaño-Reyes et al. (2025) studied this question.

synapsesocial.com/papers/69337cfbb3f947a0a125a5fb https://doi.org/10.3390/ani15233458

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Implication

Observational analysis showed variations in physiological traits in Holstein heifers, suggesting coat color and season have limited effects on pregnancy outcomes.

Physiological Responses and Pregnancy Rate of Black and White Holstein Heifers During Hot and Cold Seasons in a Desert Region

Discussion

Member takes

Implication

Key Points

Cite This Study

Physiological Responses and Pregnancy Rate of Black and White Holstein Heifers During Hot and Cold Seasons in a Desert Region

Discussion

Member takes

Implication

Key Points

Cite This Study

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