Abstract
The purpose of this paper is to produce an economical water spray driven by cow dung biogas. It is able to remove heat stress from a dairy cow. The initial step for equipment installation is a survey and literature study on the most appropriate water spray points on dairy cow and generation of biogas-fueled electric energy. To produce an economical spray, experiments were performed to determine the change in cow body temperature after sprayed with water for 10 seconds. The maximum output was obtained in 10 seconds spray with 6 minutes interval each with total electrical power required is 0.29 kWh or equal to 0.23m 3 biogas.
Highlights
Based on the economy point of view, cattle farm become a very important business sector for some countries in supporting the national economic security
Dairy cattle in countries located in tropical regions such as Indonesia generally have less milk productivity compared to those in subtropical countries such as Australia, USA, and Europe
Based on the measurement result, it was found that the Temperature Humidity Index (THI) of cattle was in THI score = 84 during the dry season and THI = 86
Summary
Based on the economy point of view, cattle farm become a very important business sector for some countries in supporting the national economic security. Council states that milk is very important food commodity in the world for which providers of calcium, phosphorous, magnesium and protein. Dairy cattle in countries located in tropical regions such as Indonesia generally have less milk productivity compared to those in subtropical countries such as Australia, USA, and Europe. [ examined the level of heat stress at farms in Indonesia by considering the surrounding ambient temperature factor and relative humidity factor. Based on the measurement result, it was found that the Temperature Humidity Index (THI) of cattle was in THI score = 84 (moderate-severe stress category) during the dry season and THI = 86
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