Physiological and metabolic responses of gestating Brahman cows to repeated transportation12
Autor: | D. M. Price, Ronald D. Randel, Jeffery A. Carroll, N. C. Burdick Sanchez, Rhonda C. Vann, A. W. Lewis, Thomas H. Welsh, D. A. Neuendorff |
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Rok vydání: | 2015 |
Předmět: |
Veterinary medicine
Pregnancy business.industry media_common.quotation_subject Artificial insemination medicine.medical_treatment Brahman Repeated measures design General Medicine medicine.disease Physiological responses NEFA Animal science Genetics medicine Gestation Animal Science and Zoology Temperament business Food Science media_common |
Zdroj: | Journal of Animal Science. 93:737-745 |
ISSN: | 1525-3163 0021-8812 |
Popis: | This study characterized physiological responses to repeated transportation (TRANS) of gestating cows of differing temperaments. Cows were classified as Calm (C; = 10), Intermediate (I; = 28), or Temperamental (T; = 10). Based on artificial insemination date and pregnancy confirmation, cows were TRANS for 2 h on d 60 (TRANS1), 80 (TRANS2), 100 (TRANS3), 120 (TRANS4), and 140 (TRANS5) ± 5 d of gestation. Indwelling vaginal temperature (VT) monitoring devices were inserted 24 h before each TRANS with VT recorded from 2 h before TRANS and averaged into 5-min intervals through 30 min after TRANS. Serum samples were collected before loading and on unloading from the trailer to determine concentrations of cortisol, glucose, and nonesterified fatty acids (NEFA). Data were analyzed by repeated measures analysis in SAS. Serum cortisol concentrations were affected by temperament ( 0.10) with repeated TRANS events. Serum glucose concentrations were affected ( < 0.02) by a TRANS event by temperament interaction with T cows taking more TRANS events to decrease their change in glucose concentration compared to C and I cows. These results demonstrate that temperament influences physiological responses to stress in gestating Brahman cows. Although repeated transport in our study is confounded with day of gestation, seasonal changes, and learning from repeated handling and transport, repeated transport is a useful model of repeated stress in studying the effects of temperament. |
Databáze: | OpenAIRE |
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