Kontribusi Faktor Klimat di Luar Kandang terhadap Perubahan Mikroklimat Closed House dengan Panjang Berbeda pada Periode Brooder di Musim Kemarau

Abstract

ABSTRAK. Penelitian ini bertujuan untuk menguji kontribusi faktor klimat di musim kemarau terhadap kondisi mikroklimat closed house periode brooder dengan panjang kandang berbeda. Unit kandang digunakan yaitu kandang ukuran panjang 60 m dan 120 m. Pengamatan dilakukan pagi hari (05.00 WIB), siang hari (13.00 WIB) dan malam hari (21.00 WIB). Parameter makroklimat yang diamati meliputi suhu, kelembaban udara, kecepatan angin dan radiasi matahari serta kondisi mikroklimat meliputi suhu, kelembaban udara, kecepatan angin dan THI. Besaran kontribusi diukur berdasarkan keeratan hubungan dengan analisis korelasi. Koefisien korelasi yang menunjukkan hubungan cukup kuat dengan nilai r0,3, digunakan untuk membentuk persamaan regresi. Hasil penelitian menunjukkan besaran kontribusi komponen makroklimat pada pagi hari, siang hari maupun malam hari terhadap kondisi mikroklimat berupa suhu, kecepatan angin dan THI lebih besar di kandang panjang 60 m, sedangkan kontribusi makroklimat terhadap kelembaban udara mikroklimat lebih besar di kandang 120 m (p0,05). Rentang nilai r pada korelasi yaitu cukup kuat hingga sangat kuat. Hasil persamaan regresi yang terbentuk memiliki nilai determinasi R2 sangat kuat, sehingga layak digunakan sebagai prediktor. Prediktor kelembaban udara di kandang 60 m berupa kecepatan angin, kelembaban udara dan radiasi matahari makroklimat, sementara prediktor kelembaban udara di kandang panjang 120 m berupa suhu, kelembaban udara dan radiasi matahari. Simpulan penelitian yaitu kontribusi faktor makroklimat terhadap variasi kondisi mikroklimat berupa suhu, kecepatan angin dan THI pada periode brooder lebih besar di kandang 60 m daripada 120 m, sedangkan kontribusi komponen makroklimat terhadap kelembaban udara di kandang 120 m lebih besar dari kandang 60 m. (Contribution of climatic factor outside the lengths to the change of microclimate closed house with different lengths in brooder period in the dry season) ABSTRACT. This study conducted to calculate macroclimate contribution during brooding period house to different closed house length in dry season. Two broiler closed house 60 m and 120 m length here used in this research. Observed data were daily at 05.00 a.m, 1.00 p.m. and 9.00 p.m to represented microclimate condition in the morning, afternoon and night. Macroclimate parameters observed included temperature, relative humidity, air velocity, sun radiation and microclimate parameters included temperature, relative humidity, air velocity, THI. Macroclimate contribution on the microclimate was calculates based on the strength of the relationship using correlation analysis. Subsequently, regression equation formed on parameters which has r value more than 0.3. Results showed that macroclimate contributes on variation of microclimate condition such as temperature, air velocity and THI which is larger in the 60 m length than 120 m length closed house(p0.05). Macroclimate factors contributes on microclimate humidity which is larger in the 120 m than 60 m closed house length. The range of correlation r value are strong enough to very strong. Regression equations confirmed to having strong determination R value, thus can be used as a predictor of microclimate variation. Predictor parameter of microclimate humidity in 60 m closed house consist of air velocity, relative humidity and sun radiation, whereas microclimate humidity in 120 m closed house predictors consist of temperature, relative humidity and sun radiation. In conclusion macroclimate that contributes to the microclimate variation consist of temperature, air velocity and THI, which is larger in 60 m than 120 m closed house. Meanwhile, macroclimate that contributes to the microclimate humidity is larger in 120 m than 60 m closed house.

The effect of differences between house length and placement zones inside the closed house on the utilization of broiler chicken feed protein in the dry season

“…In a study conducted by factors other than microclimatic ammonia in the form of differences in microclimate conditions at different lengths and different placement zones, it is thought to be insufficient to make a strong enough contribution to changes in the ability of protein utilization. Although, in the same study (Endraswati et al, 2019), there was a 5% increase in humidity and a temperature of 1°C in the zone further from the inlet. This increase results in a decrease in the effectiveness of thermoregulation in the zone further from the inlet because of the potential to irritate the respiratory tract and cause oxidative stress.…”

Macroclimate at Different Altitudes on Changes in Microclimates in a Closed House

“…Radiation from the sun at noon also causes the control panel's target temperature to be too much, so compensated with enhancement work exhaust fan with destination lower and maintain the target temperature. According to Endraswati et al (2019), the sun is one factor in temperature microclimate. Humidity macroclimate on the character of the third plains harmful to temperature cage, it means enhancement humidity macroclimate cause drop temperature inside the cage.…”

“…Speed wind in the environment helps with the entry process of air to cage pass pads or wet bearings, resulting in the temperature of incoming air into the cage decreasing, accompanied by water vapor that goes carried away enter so that humidity in the cage increase. Study Endraswati et al (2019) shows active water sprinkled on a cooling pad moment air enters the cage causes the temperature to decrease and increase the humidity inside. According to Fadholi (2013), the mood in a place is affected by temperature, air environment, pressure air, and wind speed.…”

“…The activity water sprayer causes the humidity of the air inside the cage to increase. According to Endraswati et al (2019), activation water sprinkle carried out by the control panel automatic moment temperature in the cage increase work exhaust fan that causes the temperature in cage decrease and increases the humidity inside the cage. Speed wind contributes negatively to humidity air microclimate, though connection correlation is weak, so the enhancement of speed wind macroclimate cause humidity air inside the cage to decrease.…”

Pengaruh Perbedaan Dataran terhadap Profil Litter Ayam Broiler yang Dipelihara di Kandang Closed House

“…Sedangkan perlakuan T2 menunjukan hasil yang tidak berbeda nyata dengan T1 akan tetapi berbeda nyata dengan T3. Ketinggian dataran termasuk ke dalam faktor makroklimat kandang yang berhubungan dengan kondisi mikroklimat kandang (Endraswati et al, 2019). Ketika suhu sekitar kandang rendah, maka dibutuhkan alas kandang yang tebal untuk membantu ternak mencapai comfort zone.…”