Effect of the geographic breeding region on digestible energy intake and growth rate of thoroughbred yearling horses: A comparison of the Hidaka and Miyazaki regions of Japan.
Brief content of the article
These authors studied the effects of the characteristics of geographic regions on the digestible energy (DE) intake and growth rate of thoroughbred yearlings. The DE-intakes and growth rates of yearlings in Hidaka (Hokkaido) and Miyazaki (Southern Kyushu), Japan, were compared. Measurements were conducted in September and February (winter). The authors did not observe a significant difference between the DE-intakes of yearling horses at different regions in either season. The authors observed that heart girth and cannon circumference measured in February were found to be significantly smaller in yearlings in Hidaka compared to the Miyazaki region. The authors suggested that this difference may be related to the exposure to cold temperatures and that these may have a higher energy requirement due to excess energy metabolism in cold weather.
Keywords: growth rate; double-indicator method; lignin; energy.
Matsui, A., Inoue, Y., Asai,Y. and Yamanobe, A.2005. Effect of the geographic breeding region on digestible energy intake and growth rate of thoroughbred yearling horses: A comparison of the Hidaka and Miyazaki regions of Japan. J. Equine Sci. 16: 19-26.
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