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Quantitative analysis of acid-base balance in Bos indicus steers subjected to transportation of long duration.
J Anim Sci. 2003 Jun; 81(6):1434-9.JA

Abstract

There is a lack of information pertaining to the effects of transport stress on the acid-base physiology of ruminants. The effect of transportation and/or feed and water deprivation on acid-base balance was studied using 19 2-yr-old Bos indicus steers. The steers were allocated to one of three groups: 1) control, offered ad libitum access to feed and water (n = 8); 2) water and feed deprived, offered no feed or water for 60 h (n = 6); and 3) transported, offered no feed or water for 12 h, and then transported for 48 h (n = 5). Blood gases, electrolytes, lactate, total protein, albumin, anion gap, strong ion difference, and total weak acids were determined at the conclusion of transportation. Arterial blood pH did not differ among the experimental groups. Partial pressure of carbon dioxide (pCO2) was lower for the water and feed deprived (P = 0.023) group than for the control group. Plasma total protein, albumin and total weak acid concentrations were higher for the transported (P = 0.001, P = 0.03, P = 0.01) and water- and feed-deprived (P = 0.000, P = 0.003, P = 0.001) groups, respectively, compared with the control group. Transported animals had a lower plasma concentration of potassium (P = 0.026) compared with the control animals. This study demonstrates that although blood pH remains within normal values in transported and fasted steers, the primary challenge to a transported or feed- and water-deprived animal is a mild metabolic acidosis induced by elevated plasma proteins, which may be the result of a loss of body water. The loss of electrolytes had little effect on the acid-base balance of the animals.

Authors+Show Affiliations

Australian Institute of Tropical Veterinary and Animal Science, School of Biomedical Sciences, James Cook University, Townsville 4811, Australia.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

12817490

Citation

Parker, A J., et al. "Quantitative Analysis of Acid-base Balance in Bos Indicus Steers Subjected to Transportation of Long Duration." Journal of Animal Science, vol. 81, no. 6, 2003, pp. 1434-9.
Parker AJ, Hamlin GP, Coleman CJ, et al. Quantitative analysis of acid-base balance in Bos indicus steers subjected to transportation of long duration. J Anim Sci. 2003;81(6):1434-9.
Parker, A. J., Hamlin, G. P., Coleman, C. J., & Fitzpatrick, L. A. (2003). Quantitative analysis of acid-base balance in Bos indicus steers subjected to transportation of long duration. Journal of Animal Science, 81(6), 1434-9.
Parker AJ, et al. Quantitative Analysis of Acid-base Balance in Bos Indicus Steers Subjected to Transportation of Long Duration. J Anim Sci. 2003;81(6):1434-9. PubMed PMID: 12817490.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Quantitative analysis of acid-base balance in Bos indicus steers subjected to transportation of long duration. AU - Parker,A J, AU - Hamlin,G P, AU - Coleman,C J, AU - Fitzpatrick,L A, PY - 2003/6/24/pubmed PY - 2003/12/10/medline PY - 2003/6/24/entrez SP - 1434 EP - 9 JF - Journal of animal science JO - J. Anim. Sci. VL - 81 IS - 6 N2 - There is a lack of information pertaining to the effects of transport stress on the acid-base physiology of ruminants. The effect of transportation and/or feed and water deprivation on acid-base balance was studied using 19 2-yr-old Bos indicus steers. The steers were allocated to one of three groups: 1) control, offered ad libitum access to feed and water (n = 8); 2) water and feed deprived, offered no feed or water for 60 h (n = 6); and 3) transported, offered no feed or water for 12 h, and then transported for 48 h (n = 5). Blood gases, electrolytes, lactate, total protein, albumin, anion gap, strong ion difference, and total weak acids were determined at the conclusion of transportation. Arterial blood pH did not differ among the experimental groups. Partial pressure of carbon dioxide (pCO2) was lower for the water and feed deprived (P = 0.023) group than for the control group. Plasma total protein, albumin and total weak acid concentrations were higher for the transported (P = 0.001, P = 0.03, P = 0.01) and water- and feed-deprived (P = 0.000, P = 0.003, P = 0.001) groups, respectively, compared with the control group. Transported animals had a lower plasma concentration of potassium (P = 0.026) compared with the control animals. This study demonstrates that although blood pH remains within normal values in transported and fasted steers, the primary challenge to a transported or feed- and water-deprived animal is a mild metabolic acidosis induced by elevated plasma proteins, which may be the result of a loss of body water. The loss of electrolytes had little effect on the acid-base balance of the animals. SN - 0021-8812 UR - https://www.unboundmedicine.com/medline/citation/12817490/Quantitative_analysis_of_acid_base_balance_in_Bos_indicus_steers_subjected_to_transportation_of_long_duration_ L2 - https://academic.oup.com/jas/article-lookup/doi/10.2527/2003.8161434x DB - PRIME DP - Unbound Medicine ER -