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RESEARCH ARTICLE
Contents Vol 47(2)

Electrolyte supplementation of live export cattle to the Middle East

D. T. Beatty A E , A. Barnes A , R. Taplin B , M. McCarthy C and S. K. Maloney D
+ Author Affiliations
- Author Affiliations

A School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Australia.

B Division of Science and Engineering, Murdoch University, Murdoch, WA 6150, Australia.

C Professional Agricultural Services, PO Box 1463, Fremantle, WA 6333, Australia.

D Physiology, School of Biomedical and Chemical Science, University of Western Australia, Crawley, WA 6009, Australia.

E Corresponding author. Email: d.beatty@murdoch.edu.au

Australian Journal of Experimental Agriculture 47(2) 119-124 https://doi.org/10.1071/EA06041
Submitted: 23 January 2006  Accepted: 6 July 2006   Published: 23 January 2007

Abstract

Eighty Bos taurus crossbred steers sourced from southern Western Australia were monitored to assess the efficacy of electrolyte supplementation on board a livestock vessel travelling to the Middle East during the northern hemisphere summer. Electrolytes (1.8 g/L NaHCO3 and 3.5 g/L KCl) were added to the drinking water of treatment steers (n = 39) allocated to three pens on the starboard side of the ship. Control steers (n = 40) were allocated to three pens on the port side of the ship. The combined area of the three treatment and three control pens was 61.1 and 63.6 m2 respectively, giving a stocking density of 1.57 and 1.55 m2 per steer, respectively. Steers were loaded in Fremantle, Western Australia and given 3 days to acclimatise to on-board conditions before being weighed (day 1), after which electrolyte supplementation began while the vessel docked at Port Headland, Western Australia. Feed and water were available ad libitum throughout the experiment. Steers were weighed again on day 18, before discharge in the Middle East. During electrolyte supplementation, wet bulb temperature ranged from 21.3 (day 2) to 31.8°C (day 18). Over the last 3 days of the experiment, wet bulb temperature ranged from 29.0 to 31.8°C with no diurnal variation or night-time cooling. No open-mouth panting was recorded in either group and although animals encountered periods of high heat and humidity (as indicated by increased respiratory rates), the steers were not considered clinically heat stressed during the experiment. After 18 days of electrolyte supplementation, treatment steers had a 2.9 ± 1.7% liveweight advantage compared with control steers (P < 0.001). Urine was collected on days 8 and 16 of the experiment and treatment steers maintained a higher urine pH compared with control steers on both days (day 8; 8.6 v. 8.2 and day 16; 8.2 v. 7.9; P < 0.01). Liveweight advantages and improved regulation of acid–base balance may provide welfare and economic benefits to the live export industry.


Acknowledgements

The authors would like to thank the livestock export company involved and the ship’s captain and crew for their co-operation. Thanks also to Brad Hampton at Advance Feeds and Dr Eric Taylor and James Murray at Murdoch University. Funding was provided by Meat and Livestock Australia and Livecorp.


References


Alliance Consulting and Management (2001) ‘Use of electrolytes to alleviate stress: desk top study.’ (Meat and Livestock Australia: Sydney)

Beatty DT, Barnes A, Taylor E, Pethick D, McCarthy M, Maloney SK (2006) Physiological responses of Bos taurus and Bos indicus to prolonged, continuous heat and humidity. Journal of Animal Science 84, 972–985.
| PubMed |
open url image1

Corbett JL (1990) ‘Feeding standards for Australian livestock: ruminants.’ (CSIRO: Melbourne)

Gortel K, Schaefer AL, Young BA, Kawamoto SC (1992) Effects of stress and electrolyte supplementation on body fluids and weights of bulls. Canadian Journal of Animal Science 72, 547–553. open url image1

Guyton AC , Hall JE (1996) ‘Textbook of medical physiology.’ 9th edn. (W.B Saunders Company: Philadelphia, PA)

Hemp R (1989) Psychrometry. In ‘Environmental Engineering in South African Mines’. (Eds J Burrows, R Hemp, W Holding, RM Stroh) pp. 435–463. (The Mine Ventilation Society of South Africa: Emmarentia)

Johnson KG (1970) Sweating rate and the electrolyte content of skin secretions of Bos taurus and Bos indicus cross-bred cows. The Journal of Agricultural Science 75, 397–402. open url image1

Mader TL, Davis MS, Brown-Brandl T (2006) Environmental factors influencing heat stress in feedlot cattle. Journal of Animal Science 84, 712–719.
| PubMed |
open url image1

Norris RT, Richards RB, Creeper JH, Jubb TF, Madin B, Kerr JW (2003) Cattle deaths during sea transport from Australia. Australian Veterinary Journal 81, 156–161.
| PubMed |
open url image1

Ross JG, Spears JW, Garlich JD (1994) Dietary electrolyte balance effects on performance and metabolic characteristics in growing steers. Journal of Animal Science 72, 1842–1848.
| PubMed |
open url image1

Sanchez WK, Beede DK, Cornell JA (1994a) Interactions of sodium, potassium and chloride on lactation, acid-base status, and mineral concentrations. Journal of Dairy Science 77, 1661–1675.
| PubMed |
open url image1

Sanchez WK, McGuire MA, Beede DK (1994b) Macromineral nutrition by heat stress interactions in dairy cattle: review and original research. Journal of Dairy Science 77, 2051–2079.
| PubMed |
open url image1

Schaefer AL, Jones SDM, Tong AKW, Young BA (1990) Effects of transport and electrolyte supplementation on ion concentrations, carcass yield and quality in bulls. Canadian Journal of Animal Science 70, 107–119. open url image1

Schaefer AL, Jones SDM, Tong AKW, Young BA, Murray NL, Lepage P (1992) Effects of post-transport electrolyte supplementation on tissue electrolytes, hematology, urine osmolality and weight loss in beef bulls. Livestock Production Science 30, 333–346.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Schaefer AL, Jones SDM, Stanley RW (1997) The use of electrolyte solutions for reducing transport stress. Journal of Animal Science 75, 258–265.
| PubMed |
open url image1

Schneider PL, Beede DK, Wilcox CJ, Collier RJ (1984) Influence of dietary sodium and potassium bicarbonate and total potassium on heat-stressed lactating dairy cows. Journal of Dairy Science 67, 2546–2553.
| PubMed |
open url image1

Schneider PL, Beede DK, Wilcox CJ (1986) Responses of lactating cows to dietary sodium source and quantity and potassium quantity during heat stress. Journal of Dairy Science 69, 99–110.
| PubMed |
open url image1

Tucker WB, Harrison GA, Hemken RW (1988) Influence of dietary cation-anion balance on milk, blood, urine, and rumen fluid in lactating dairy cows. Journal of Dairy Science 71, 346–354.
| PubMed |
open url image1

West JW, Mullinix BG, Sandifer TG (1991) Changing dietary electrolyte balance for dairy cows in cool and hot environments. Journal of Dairy Science 74, 1662–1674.
| PubMed |
open url image1

West JW, Haydon KD, Mullinix BG, Sandifer TG (1992) Dietary cation-anion balance and cation source effects on production and acid-base status of heat-stressed cows. Journal of Dairy Science 75, 2776–2786.
| PubMed |
open url image1