TY - JOUR T1 - Holstein İneklerde Isı Stresinin Süt Verimi, Gebelik Oranı ve İşletme Gelirine Etkileri TT - Effects of Heat Stress on Milk Production, Conception Rate and Farm Income in Holstein Cows AU - Küçükoflaz, Mehmet AU - Kılıçkaya, İbrahim AU - Güngör, Güven AU - Demir, Seyrani AU - Sarıözkan, Savaş PY - 2025 DA - July Y2 - 2025 DO - 10.36483/vanvetj.1653482 JF - Van Veterinary Journal JO - Van Vet J PB - Van Yüzüncü Yıl Üniversitesi WT - DergiPark SN - 2149-3359 SP - 105 EP - 109 VL - 36 IS - 2 LA - tr AB - Bu çalışmanın amacı, Holstein ırkı ineklerde ısı stresinin süt verimi, gebelik oranı ve işletme gelirine etkisini belirlemektir. Çalışmanın materyalini, Kayseri İlinde faaliyet gösteren 61 baş Holstein ırkı sağmal ineğe sahip süt sığırı işletmesinin 2023 yılı ilkbahar ve yaz mevsimine ait süt verimi ve gebelik oranı verileri oluşturmuştur. Araştırmada kullanılan günlük sıcaklık ve bağıl nem değerleri Meteoroloji 7. Bölge Müdürlüğü’nden temin edilmiştir. Çalışmada mevsime ve sıcaklık-nem endeksi (SNİ)’ne göre süt verimleri ve gebelik oranları karşılaştırılarak ısı stresinin işletme gelirine etkisi ortaya konulmuştur. Araştırma bulgularına göre, yaz mevsiminde süt veriminin ilkbahara göre 1.47 lt/gün/inek (p KW - Gebelik oranı KW - Gelir KW - Holstein KW - Isı stresi KW - Süt verimi N2 - The aim of this study was to determine the effects of heat stress on milk yield, conception rate and farm income in Holstein cows. The material of the study was milk yield and conception rate data from the spring and summer seasons of 2023 of a dairy cattle farm with 61 Holstein milking cows operating in Kayseri Province. Daily temperature and relative humidity values used in the study were obtained from the 7th Regional Directorate of Meteorology. In the study, the effect of heat stress on farm income was revealed by comparing milk yields and conception rates according to season and temperature-humidity index (THI). 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UR - https://doi.org/10.36483/vanvetj.1653482 L1 - https://dergipark.org.tr/tr/download/article-file/4671153 ER -