Serdar DURU

Determination of starting level of heat stress on daily milk yield in Holstein cows in Bursa city of Turkey

Bu çalışmanın amacı, Türkiye'de Marmara Bölgesinde yetiştirilen Siyah Alaca sığırlarda günlük süt verimi (GSV) için ısı stresinin başlangıç seviyelerini araştırmaktır. Bu amaçla Marmara Bölgesinde bulunan Bursa'da 2010-2012 yılları arasında yetiştirilen 212 baş Siyah Alaca ineğe ait toplam 68113 süt verim kaydı değerlendirilmiştir. Isı stresinin etkisini araştırmak için sıcaklık nem indeksi (SNİ) kullanılmıştır. Yıl, laktasyon sayısı, sağılan gün sayısı (SGS) ve SNİ'nin süt verimine etkileri önemlidir (P

Türkiye’nin Bursa şehrindeki Siyah Alaca ineklerde günlük süt verimi için ısı stresi başlangıç seviyesinin belirlenmesi

The aim of this study was to investigate the starting levels of heat stress on daily milk yield (DMY) in Holstein cows reared in Marmara region in Turkey. For this purpose, a total of 68113 daily milk records of 212 Holstein Friesian cows raised in Bursa, a city in Marmara region, during 2010-2012 were evaluated. The temperature humidity index (THI) was used to investigate the effect of heat stress. The effects of year, lactation number, days in milk (DIM) and THI on milk yield were found significant (P

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