The effect of temperature and relative humidity on milk yield of holstein dairy cattle raised in agricultural enterprises under different climatic conditions
Yükleniyor...
Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Gültekin Özdemir
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
This study was conducted to investigate the effect of air temperature and
relative humidity on milk yield of the Holstein dairy cattle raised in Agricultural Enterprises under different climatic conditions in Turkey (Çukurova,
Polatlı and Türkgeldi) and to examine the differences between the enterprises. Records of milk yield on the test day for the years 2014-2020 obtained
from the General Directorate of Agricultural Enterprises (TİGEM) were utilised in the study. The data set related to milk yields included the number
of Holstein cows, data on different lactation orders, control records of milk
yield and information of the animals for some environmental factors. In
the study, values of four temperature-humidity indices (THI) consisting of
different combinations of daily maximum and minimum temperature and
humidity values were examined in order to assess the effect of temperature
stress on milk yield. Consequently, the difference between the enterprises
in terms of the combinations of the temperature-humidity index was found
to be statistically significant (P<0.05). The THI value calculated for the agricultural enterprises varied between 10 and 102. It was determined that
dairy cattle were exposed to heat stress between May and November in
Türkgeldi and Polatlı Agricultural Enterprises in the cold climate zone and
between April and July in Çukurova Agricultural Enterprises in the temperate climate zone. While the THI value with low humidity weight was the
optimal indicator in a humid climate, the THI value with high-temperature
weight was the best indicator of heat stress in a semi-arid climate.
Açıklama
Anahtar Kelimeler
Holstein, Heat stress, Temperature-humidity index, Milk yield, Different climatic condition
Kaynak
International Journal of Agriculture, Environment and Food Sciences
WoS Q Değeri
Scopus Q Değeri
Cilt
6
Sayı
4
Künye
Gelir, G. ve Tatar, A. M. (2022). The effect of temperature and relative humidity on milk yield of holstein dairy cattle raised in agricultural enterprises under different climatic conditions. International Journal of Agriculture, Environment and Food Sciences, 6(4), 694-703.
