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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effects of Increasing Heat Loss on Some Physiological Parameters Of Farrowing Sows Under Tropical Climate)

ผู้เขียน:ImgPiratch Srichana, Imgนายชาญวิทย์ วัชรพุกก์, ศาสตราจารย์, Imgนายสุรชัย ชาครียรัตน์, รองศาสตราจารย์

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Abstract

Sixteen large White sows were allocated randomly onto 4 treatments in a Completely Randomised Designed (CRD) experiment with 4 replicates. The treatment were Treatment 1: Control – normal farrowing pens, Treatment 2:normal farrowing pens with electric fan, Treatment 3:normal farrowing pens with dripper and Treatment 4:mormal farrowing pens with electric fan and dripper. The result revealed that respiration rate of the sows in Treatment 1 (128.76 breaths/min.) was significantly higher (P<0.05) than that of the sows in other treatments. The respiration rate of the sows in Treatment 4 (70.97 breaths/min.) was significantly lower (P<0.05) than that of the other treatments except those in Treatment 3 (86.64 breaths/min.). The heart rate of the sows in Treatment 3 (82.90 beats/min.) was significantly lower than those found in Treatment 1 (89.04 beats/min.) and Treatment 2 (88.59 beats/min.). Both skin and rectal temperatures of the sows in Treatment 1 (39.23 and 40.25?C, respectively) were significantly higher (P<0.05) than that of the sows in all other treatments. Furthermore, the results revealed that both respiration rate and skin temperature of all the sows during the period of 1 week prior to parturition were significantly higher (P<0.05) than that of the other periods post parturition. There was no significant difference in heart rate among the observed periods. The rectal temperature of the sows during the 1 week period prior to parturition (39.02?C) was significantly lower (P<0.05) than that of the other periods post parturition. The rectal temperature of the sows during the 1 st week post parturition (39.69?C) was significantly lower (P<0.05) than that of the 3rd week post parturition (39.94?C). There was no significant difference (P>0.05) among rectal temperature of all the sows in 2nd , 3rd and 4th weeks post parturition. It was concluded that heat stress in a farrowing sow may be alleviated by dripper with or without fan. The elevated metabolic rate may be associated with milk production activities of the sow.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 030, Issue 2, Apr 96 - Jun 96, Page 220 - 225 |  PDF |  Page