Korelasi suhu dan kelembapan terhadap tingkat produksi susu pada ketinggian kandang berbeda

Abstract

The aim of the observations was to determine the correlation of temperature, humidity and THI with milk production levels at different cage heights. The observation method is to record milk production results and morning and evening temperatures in two different cages. The material observed was 10 Friesian Holstein crossbreed cows with 3 lactation periods for 5 each in the upper cage at 700 meters above sea level and the lower cage at 670 meters above sea level. The observation results showed that there was a very strong significant correlation between temperature, humidity, and THI and milk production in the morning in the upper pen with a value ≤ 0.05 and a correlation coefficient value of 0.999. Meanwhile, in the morning it has a value ≥ 0.05 and a correlation coefficient value of 0.867, thus indicating there is no significant correlation between variables. The correlation in the lower cage in the morning showed a ≤ 0.05 and the milk correlation coefficient value was 0.925, so there was a very strong significant correlation between variables and milk production. a ≥ 0.05 with a correlation coefficient value of 0.714 in the afternoon shows a strong correlation between variables but is not significant. In conclusion, observations in the upper and lower cages in the morning showed a very strong significant correlation between temperature, humidity and THI, while in the upper and lower cages in the afternoon there was no significant correlation between variables.