Oral hydration therapy with water and bovine respiratory disease incidence affects rumination behavior, rumen pH, and rumen temperature in high-risk, newly received beef calves
| Autor: | Jenny S Jennings, Kendall L Samuelson, Dexter J Tomczak, John T Richeson |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Male
Rumen Animal Health and Well Being Respiratory Tract Diseases Cattle Diseases Bovine respiratory disease Meloxicam Vaccines Attenuated Random Allocation 03 medical and health sciences Animal science Bolus (medicine) Surgical castration Genetics medicine Animals Hydration Therapy Respiratory system Retrospective Studies 030304 developmental biology 0303 health sciences business.industry Incidence Anti-Inflammatory Agents Non-Steroidal Vaccination Temperature 0402 animal and dairy science Water Repeated measures design 04 agricultural and veterinary sciences General Medicine Hydrogen-Ion Concentration medicine.disease 040201 dairy & animal science Diet Rumination Cattle Female Animal Science and Zoology medicine.symptom business Food Science |
| Zdroj: | J Anim Sci |
| ISSN: | 1525-3163 0021-8812 |
| Popis: | The study objectives were to determine the effect of oral hydration therapy and bovine respiratory disease (BRD) on rumination behavior, rumen pH, and rumen temperature. A random subset of high-risk, auction-sourced bulls from 3 truckload blocks (initial BW = 188.9 ± 19.1 kg) were fitted with a collar containing a 3-axis accelerometer to quantify rumination time and activity (n = 58) and administered a rumen pH and temperature data logging bolus (n = 33). At arrival, subset calves (n = 2 per pen) were balanced across treatment pens (n = 15 per treatment; n = 10 animals per pen) and randomized to receive 0.57 L water/45.4 kg BW from a modified oral drenching apparatus (H2O) or no water administration (CON). Standard arrival processing procedures were implemented including surgical castration. Modified-live virus respiratory vaccination was delayed until day 28. Technicians assigned a clinical illness score (CIS) daily; calves with CIS ≥ 2 and rectal temperature ≥ 40 °C were considered a BRD case (RCASE) and treated with an antimicrobial. The fixed effect of BRD cases vs. nontreated cohorts (RCON) was determined retrospectively using data from the accelerometer collar (n = 19 and 29) and rumen bolus (n = 12 and 21, for RCASE and RCON, respectively). Daily means and hourly means across days throughout the 56-d observation period were generated. Fixed effects were analyzed using the mixed model procedure with repeated measures. Daily rumen temperature was altered (P = 0.04) such that peak rumen temperature occurred earlier for H2O, whereas CON had increased (P ≤ 0.01) rumen temperature following delayed vaccination on day 28. Calves diagnosed with BRD had a transiently decreased (P = 0.04) active minutes between days 9 and 32, decreased (P < 0.01) active minutes between 0800 and 2000 h, decreased (P < 0.01) rumination time between 2000 and 0400 h, greater (P < 0.01) rumen temperature until delayed vaccination on day 28, and greater (P < 0.01) hourly rumen temperature between 0900 and 0300, and altered (P < 0.01) rumen pH. Earlier peak rumen temperature observed in H2O may indicate physiological modification enabling a more pronounced inflammatory response. Differences in rumination behavior and activity may be useful for early BRD detection. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|