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- Title
Effect of high temperature environment on growth performance and physiology of finishing pigs.
- Authors
Lee, H. F.; Yang, T. C.; Hsieh, Y. H.; Kang, C. C.; Tsao, M. C.; Lin, Y. F.
- Abstract
Heat stress causes negative effect on production and physiology of pigs. The purpose of this study was to evaluate environmental temperature on growth performance and physiology of growing pigs. 18 heads of LYD hybrid pigs at average of 83.6 kg with half castrated and half female were randomly assigned to metabolic cage individually in three chambers, group A (LT, 22 °C), group B (MT, 26°C) and group C (HT, 30°C). Feed (CP 13.3%, ME 3,300 kcal/kg) and water were supplied ad libitum. After seven days of adjustment period followed by collection period for seven days, respiratory rate, body temperature and rectal temperature were measured on the 3th, 4th and 5th day of collection period. Body weight data and blood were collected before and after the experiment. Results showed that group HT decreased feed intake, weight gain, feed efficiency and increased respiratory rate, body temperature of pigs. Finishing pigs under high temperature had higher TG and lower BUN, Hgb, MCV and lymphocyte indicated stress altered the nutrient metabolism and physiology. In summary, prolong high temperature caused heat stress that decreased growth performance and affected physiological response. A new nutrition strategy should be developed to relieve the negative effect from heat stress on finishing pigs and hence improve the production.
- Subjects
SWINE physiology; SWINE growth; PHYSIOLOGICAL effects of heat; SWINE breeding; BODY temperature; WEIGHT of swine
- Publication
Journal of the Chinese Society of Animal Science, 2021, Vol 50, p221
- ISSN
0253-9187
- Publication type
Article