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Studies on the exercise physiology of draft horses performed in Japan during the 1950s and 1960s

View Article: PubMed Central - PubMed

ABSTRACT

Although the total number of horses raised in Japan dramatically decreased after World War II, because draft horses were still used for farm work in paddyfields and on farms during the period of the 1950s and 1960s, a performance test for selecting better draft horses was needed. In order to determine the mostsuitable size of draft horses for Japanese farm conditions, the working power of horses weighing from 185 to 622 kg was evaluated by performing an endurancetest, several kinds of working power tests, and maximum pulling power tests. Oxygen consumption during draft exercise was measured by the Douglas bag method inorder to evaluate effects of draft workload under the conditions of different types of work (14- and 18-cm plow depths, cultivator, and tillage), tractionmethods (shoulder traction, shoulder-trunk traction, and chest-trunk traction), walking speeds (40, 60, 80, 100, and 120 m/min), and depths of water (0, 18, 36,and 54 cm) on energy expenditure. The relationship between energy consumption and pulse rate during exercise was also evaluated. A study of a performance testfor draft horses was conducted to establish a new approach for evaluating draft horse performance using heart rate as an index. For this study, a beat meter formeasuring heart rate was developed, and experimental protocols were used to evaluate the relationship between heart rate and workload. Although the researchresults obtained from these studies do not have particular relevance in the current day, these studies are valuable for understanding the history of equineexercise physiology in Japan.

No MeSH data available.


Related in: MedlinePlus

Effects of walking speed on energy expenditure. RMR is the relative metabolic rate compared with at rest. The authors generated this graph using data inreports by Tatsumi et al. [52, 54].
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fig_003: Effects of walking speed on energy expenditure. RMR is the relative metabolic rate compared with at rest. The authors generated this graph using data inreports by Tatsumi et al. [52, 54].

Mentions: Effects of differences in walking speed on energy metabolism were evaluated using 6 crossbred horses (400–500 kg BW) [52,54]. As shown in the lower panels in Fig. 3Fig. 3.


Studies on the exercise physiology of draft horses performed in Japan during the 1950s and 1960s
Effects of walking speed on energy expenditure. RMR is the relative metabolic rate compared with at rest. The authors generated this graph using data inreports by Tatsumi et al. [52, 54].
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5383625&req=5

fig_003: Effects of walking speed on energy expenditure. RMR is the relative metabolic rate compared with at rest. The authors generated this graph using data inreports by Tatsumi et al. [52, 54].
Mentions: Effects of differences in walking speed on energy metabolism were evaluated using 6 crossbred horses (400–500 kg BW) [52,54]. As shown in the lower panels in Fig. 3Fig. 3.

View Article: PubMed Central - PubMed

ABSTRACT

Although the total number of horses raised in Japan dramatically decreased after World War II, because draft horses were still used for farm work in paddyfields and on farms during the period of the 1950s and 1960s, a performance test for selecting better draft horses was needed. In order to determine the mostsuitable size of draft horses for Japanese farm conditions, the working power of horses weighing from 185 to 622 kg was evaluated by performing an endurancetest, several kinds of working power tests, and maximum pulling power tests. Oxygen consumption during draft exercise was measured by the Douglas bag method inorder to evaluate effects of draft workload under the conditions of different types of work (14- and 18-cm plow depths, cultivator, and tillage), tractionmethods (shoulder traction, shoulder-trunk traction, and chest-trunk traction), walking speeds (40, 60, 80, 100, and 120 m/min), and depths of water (0, 18, 36,and 54 cm) on energy expenditure. The relationship between energy consumption and pulse rate during exercise was also evaluated. A study of a performance testfor draft horses was conducted to establish a new approach for evaluating draft horse performance using heart rate as an index. For this study, a beat meter formeasuring heart rate was developed, and experimental protocols were used to evaluate the relationship between heart rate and workload. Although the researchresults obtained from these studies do not have particular relevance in the current day, these studies are valuable for understanding the history of equineexercise physiology in Japan.

No MeSH data available.


Related in: MedlinePlus