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RESEARCH ARTICLE

Nutritional strategies to alleviate heat stress in pigs

J. J. Cottrell A , F. Liu A , A. T. Hung A , K. DiGiacomo A , S. S. Chauhan A B , B. J. Leury A , J. B. Furness C , P. Celi D E F and F. R. Dunshea A G
+ Author Affiliations
- Author Affiliations

A Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Vic. 3010, Australia.

B Directorate of Animal Husbandry, Government of Himachal Pradesh, Shimla-171 005, India.

C Department of Anatomy and Neuroscience, The University of Melbourne, Vic. 3010, Australia.

D Faculty of Veterinary Science, University of Sydney, Narellan, NSW 2567, Australia.

E Present address: DSM Nutritional Products, Animal Nutrition and Health, Columbia, MD 21045, USA.

F Present address: Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Vic. 3010, Australia.

G Corresponding author. Email: fdunshea@unimelb.edu.au

Animal Production Science 55(12) 1391-1402 https://doi.org/10.1071/AN15255
Submitted: 25 May 2015  Accepted: 8 September 2015   Published: 21 October 2015

Abstract

Pigs are comparatively less heat tolerant than other species of production animals, which poses challenges for stock productivity and management during seasonal heat waves that occur in summer. The issues surrounding heat and pig production are predicted to increase, based on the actions of climate change increasing the intensity, frequency and duration of heat waves. Furthermore, future growth areas of pig production are going to be in tropical regions such as South-east Asia and Latin America. Efforts by the pig to dissipate excess body heat come at a cost to health and divert energy away from growth, compromising efficient pig production. Management of heat stress requires multiple strategies, and recent research is improving the understanding of the application of nutritional strategies to ameliorate the effects of heat stress. In particular the use of feed additives is an important, flexible and economical method to alleviate heat stress and the intensive nature of pig production lends itself to the use of additives. Some specific examples include antioxidants, betaine and chromium, which have been proved effective or being tested in mitigating some certain impacts of heat stress in pigs. The aim of this review is to summarise recent advances in the nutritional management of heat stress in pigs.

Additional keywords: hyperthermia, nutrition.


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