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Effect of Rainwater Sprinkling System Utilization for Reducing Heat Stress in Milking Cows during Intense Heat Time  

Choi, Dong-Yoon (National Institute of Animal Science, R.D.A)
Cho, Sung-Back (National Institute of Animal Science, R.D.A)
Park, Kyu-Hyun (National Institute of Animal Science, R.D.A)
Yang, Seong-Hak (National Institute of Animal Science, R.D.A)
Hwang, Ok-Hwa (National Institute of Animal Science, R.D.A)
Kwag, Jung-Hoon (National Institute of Animal Science, R.D.A)
Jeong, Kwang-Hwa (National Institute of Animal Science, R.D.A)
Song, Jun-Ik (National Institute of Animal Science, R.D.A)
Yoo, Yong-Hee (National Institute of Animal Science, R.D.A)
Ahn, Hee-Kwon (Dept. of Animal Biosystems Science, Chungnam National University)
Publication Information
Journal of Animal Environmental Science / v.18, no.sup, 2012 , pp. 21-28 More about this Journal
Abstract
Since the temperature during summer is higher than the temperature which is suitable for milking cows, high temperature stress have severely affected dairy farmers due to decreased milk production. This study was carried out to investigate the effect of rainwater sprinkling system for reducing heat stress in milking cows during intense heat time. Treatment conditions were divided into 2 types ; No rainwater sprinkling (T1) and Rainwater sprinkling (T2). Temperature in the milking cow shed, feed intake, milk yield, respiration rate and rectal temperature were measured to investigate the effect of hot environment on the physiological, productive responses in milkig cows. The results obtained are summarized as follows : The daily milk yields were 24.5 and 27.4 kg per head in T1 and T2 during experimental period. The respiration rate was significantly higher in T1 than those of T2. The rectal temperature in T1 ($40.6^{\circ}C$) was higher than those of T2 ($39.8^{\circ}C$). It was suggested that rainwater sprinkling system installed in the dairy cow shed was effective means to reduce heat stress of milking cow.
Keywords
Milking cow; High temperature; Rainwater sprinkling; Milk yield; Respiration rate; Rectal temperature;
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Times Cited By KSCI : 3  (Citation Analysis)
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