Electronic Theses and Dissertation

Hubungan suhu lingkungan dengan kadar hormon kortisol pada sapi aceh betina abstrak kondisi lingkungan yang terlalu panas, ditandai oleh tingginya temperatur, kelembaban, radiasi matahari, dan rendahnya kecepatan angin, dapat menyebabkan stres panas pada sapi potong, dengan dampak signifikan terhadap kesehatan dan produktivitas ternak. hormon kortisol sering digunakan sebagai indikator tingkat stres yang dialami oleh hewan. tujuan penelitian ini dilakukan untuk mengetahui hubungan suhu lingkungan dengan kadar hormon kortisol pada sapi aceh betina. penelitian ini menggunakan 31 ekor sapi aceh betina. pengukuran konsentrasi kortisol dilakukan secara non-invasif dengan sampel feses. analisis hormon dilakukan menggunakan metode enzym linked immunosorbent assay (elisa). hasil penelitian berdasarkan uji korelasi didapatkan hasil positif antara suhu lingkungan dengan kadar kortisol. hal ini menunjukkan jika terjadi peningkatan suhu lingkungan maka akan menyebabkan peningkatan kadar kortisol. hasil analisis korelasi dari data tersebut menunjukkan terdapat korelasi positif yang sangat signifikan (p < 0,01) antara suhu lingkungan dengar kadar kortisol (r = 0,652). dapat disimpulkan bahwa terdapat hubungan positif antara suhu lingkungan dengan hormon kortisol. semakin meningkat suhu lingkungan maka terjadi peningkatan hormon kortisol. kata kunci: heat stress, hormon kortisol, produktivitas ternak, sapi aceh, suhu lingkungan

RELATIONSHIP BETWEEN ENVIRONMENTAL TEMPERATURE AND CORTISOL HORMONE LEVELS IN FEMALE ACEH CATTLE ABSTRACT Excessive environmental conditions, characterized by high temperature, humidity, solar radiation, and low wind speed, can cause heat stress in beef cattle, with significant impacts on livestock health and productivity. The hormone cortisol is often used as an indicator of the level of stress experienced by animals. The purpose of this study was to determine the relationship between environmental temperature and cortisol hormone levels (stress hormone) in female Aceh cattle. This study used 31 female Aceh cattle. Cortisol concentration measurements were carried out non-invasively with feces samples. Hormone analysis was carried out using the enzyme linked immunosorbent assay (ELISA) method. The results of the study based on the correlation test obtained positive results between environmental temperature and cortisol levels. This shows that if there is an increase in environmental temperature, it will cause an increase in cortisol levels. The results of the correlation analysis of the data showed that there was a very significant positive correlation (p < 0.01) between environmental temperature and cortisol levels (r = 0.652). It can be concluded that there is a positive relationship between environmental temperature and cortisol hormone. The higher the environmental temperature, the higher the cortisol hormone. Key words: Heat stress, cortisol hormone, livestock productivity, aceh cattle, environmental temperatur