Effect of Water Sprinkling with and without Air Movement on Cooling Dairy Cows

Seath, D.M.; Miller, Gary D.

doi:10.3168/jds.s0022-0302(48)92217-6

Cited by 26 publications

(18 citation statements)

References 3 publications

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“…Brouček et al (2009) zistili v klimatických podmienkach Slovenska preukazný pokles dojnosti kráv v období mesiacov júl a august. Prvotné štúdie o eliminácii tepelnej záťaţe boli venované rozprašovaniu vody v kombinácii s núteným vetraním (Seath and Miller, 1948). Neskôr sa skúmali automaticky riadené chladiace systémy vyuţívajúce kombináciu rozprašovania vody a núteného vetrania (Flamenbaum et al, 1986).…”

Section: Detailed Abstractunclassified

Effect of Different Cooling Systems on Lying Time of Dairy Cows in Cubicles With Separated Manure Solids Bedding

Lendelová¹,

Botto²,

Pogran³

et al. 2012

j. cent. eur. agric.

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The aim of this study was to investigate the changes of lying time and other behaviour manifestations of dairy cows during usage of different cooling systems of animals. Alternative hypothesis was presumption, that the lying time of cows in lying cubicles with applied two different cooling systems are indifferent. The sprinkling system was used to animal cooling in group S in summer time. In group SV was disposable sprinkling system and diagonally rotated ventilators. Activities and the rest of animals were evaluated in 10 minute intervals using a camera system for 24 hours. Data obtained was tested by nonparametric Kruskal-Wallis one-way ANOVA and multiple comparison test for detecting of significant differences in the behaviors between groups of cows. There was found positive effect of animal enhanced cooling using sprinkling system with increased air movement by ventilators. It reflected in significant prolongation of whole lying time and shortening of time, when animals were standing. It resulted from final values of investigated behaviour manifestations of dairy cattle within 24 hour period that animals in group SV with sprinklers and ventilators lay in stalls longer than in group S with sprinklers, but without ventilators (10.76 h*d -1

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Section: Detailed Abstractunclassified

Effect of Different Cooling Systems on Lying Time of Dairy Cows in Cubicles With Separated Manure Solids Bedding

Lendelová¹,

Botto²,

Pogran³

et al. 2012

j. cent. eur. agric.

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“…The cows left dry without fan showed an average decrease in rectal temperature after 0.5 hour of 0.156 ºC compared to 0.345 ºC for fan alone, 0.461 ºC for sprinkling alone and 0.790 ºC for cows receiving both sprinkling and fan. At the end of 1 hour the decrease in rectal temperature averaged only 0.39 ºC for the non-sprinkled and no-fan treatment and 1.023ºC for sprinkling plus fan (Seath & Miller 1948). Armstrong (1994) also found that cows that were cooled with sprinklers in front of fans that sprayed continuously at approximately 18 L/h per fan had body temperatures that were 1.7 ºC lower than cows without sprinklers or fans.…”

Section: Combination Of Air Movement and Water Applicationmentioning

confidence: 95%

“…This method does not attempt to cool the air, but instead uses a large droplet to wet the hair coat and skin of the animal. The animal is then cooled as water evaporates from the hair and skin (Seath & Miller 1948;Flamenbaum et al 1986;Bucklin et al 1991).…”

Section: Sprinklersmentioning

confidence: 99%

“…Seath and Miller (1948) exposed six cows to direct sunlight for two hours after which records were made of respiratory rate and rectal temperature. Following this the animals were either wet with a handheld sprinkler, exposed to a fan or both.…”

Section: Combination Of Air Movement and Water Applicationmentioning

confidence: 99%

“…The use of water to alleviate high heat load on cattle is not a new idea and one of the first published studies that demonstrated the benefits of cooling cattle was conducted by Seath and miller (1948). Seath and Miller (1948) concluded that sprinkling the cattle produced a significant drop in respiratory rate up to half an hour post cooling, and a significant drop in body temperature after one hour.…”

Section: Animal Response To Water Applicationmentioning

confidence: 99%

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Heat load alleviation in beef cattle: water application during continuous high temperature exposure

Tait¹

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The live export industry is an integral part of the Australian cattle industry and makes a significant contribution to the Australian economy. Heat stroke has been a major cause of cattle death on long haul sea voyages and has the potential to threaten the viability and sustainability of cattle exports.To mitigate high heat loads on these voyages, it is necessary to implement cooling strategies to lower the temperature of the microclimate surrounding the cattle. The main cooling method used on live export voyages is high pressure hosing but no research has been undertaken to evaluate the efficacy of this or other water application methods. The major focus of this thesis was therefore, to explore heat load mitigation of confined beef cattle. The initial hypothesis was that the application of water onto cattle exposed to a continuous high heat load will reduce the severity of heat stress.As, different breeds of cattle and composites are exported together, the second hypothesis was that different cattle breeds and composites respond differently to heat exposure and to water cooling.Climatic conditions for all three studies were based on the conditions encountered on board a live export vessel travelling from southern Australia to the Middle East (during the northern hemisphere summer). The first study obtained data on changes in the microclimate and responses of Bos taurus cattle (Angus) when water was applied via a hose to cattle maintained in single pens under continuous hot conditions. The results showed that the water application had a positive impact on cattle comfort (respiratory rate reduced by 50 -80 bpm; rectal temperature reduced within an hour after wetting of cattle). The dry-bulb temperature was also reduced following longer duration water applications. The impact of water application on physiological parameters, such as rate of respiration and rectal temperature, was a function of water volume applied and ambient conditions. For all steers mean daily rectal temperatures and respiratory rates were lower (P < 0.01) during thermoneutral conditions than during the 11 days of hot conditions. Four water application methods (hosing, overhead sprinklers, leg sprinklers and misters) were evaluated in the second experiment with the same Bos taurus breed. Volume and frequency of water application was assessed with the cattle were housed in groups (n = 9) on sawdust bedding. Of the four methods evaluated, hosing was the most effective in mitigating the heat load on the cattle. The leg wetting and misting treatments had little to no effect. While not as effective as hosing, overhead sprinklers did afford heat relief and may have advantages for cooling large numbers of cattle at the same time. Bedding had to be removed after it became wet due to increased concentrations of atmospheric ammonia that posed a risk to cattle and human health. IIAs live export ships carry both Bos taurus and Bos indicus cattle, the third experiment investigated the effects of high heat load conditions on three breeds of cattle an...

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The Climatic Physiology of Farm Animals

Findlay

1954

Recent Studies in Bioclimatology

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Effect of Water Sprinkling with and without Air Movement on Cooling Dairy Cows

Cited by 26 publications

References 3 publications

Effect of Different Cooling Systems on Lying Time of Dairy Cows in Cubicles With Separated Manure Solids Bedding

Effect of Different Cooling Systems on Lying Time of Dairy Cows in Cubicles With Separated Manure Solids Bedding

Heat load alleviation in beef cattle: water application during continuous high temperature exposure

The Climatic Physiology of Farm Animals

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