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KMID : 1025520050470040691
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Journal of Animal Science and Technology
2005 Volume.47 No. 4 p.691 ~ p.696
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Effect of Air Ejection on the Behaviors of Sows and their Piglets Related to the Crushing of Piglets by Sows
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Jeon J.-H.
Yeon Seong-Chan
Chang Hong-Hee
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Abstract
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Suckling piglets must avoid positions with high air velocity because they don’t have hypodermic fat. Therefore this study examined the effects of air ejection on the behaviors of sows and their piglets. Compressed air was released for 5s at 5s intervals between floor and udder of sows only when they were standing or sitting. Sixteen multiparous crossbred(Landrace×Yorkshire) sows and their piglets were used. Behaviors of sixteen sows and their piglets were recorded for 4 days postpartum, using the LED lamp(wavelength:950nm), CCD camera(Samsung SDC-411), multiplexer(Samsung SDM-080), and time lapsed VCR(Samsung SRV-30). The videotapes were scanned every 30s to obtain an instantaneous behavioral sample. The sow’s standing and sitting rates between control group(CG) and air ejection group(AEG) were not significantly different(P＞0.05). This means that air ejection does not affect the behavior of sows. Frequency of the suckling piglets’ behaviors closely related to the crushing by sows was lower in AEG than in CG(P＜0.05). These results suggest that air ejection may be available for reduction of the crushing of suckling piglets by sows.
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KEYWORD
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Air-ejection, Behavior, Crushing, Piglet, Sow
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