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Effect of the temperature-humidity index and lactation stage on milkproduction traits and somatic cell score of dairy cows in Iran |
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| รหัสดีโอไอ | |
| Creator | 1. Forough Zare-Tamami 2. Hasan Hafezian 3. Ghodrat Rahimi-Mianji 4. Rohullah Abdullahpour 5. Mohsen Gholizadeh |
| Title | Effect of the temperature-humidity index and lactation stage on milkproduction traits and somatic cell score of dairy cows in Iran |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2561 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 40 |
| Journal No. | 2 |
| Page no. | 379 |
| Keyword | temperature-humidity index, Lactation stage, milk, somatic cell score |
| URL Website | http://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | The aim of this study was to investigate the effect of the temperature-humidity index (THI) and days in milk (DIM) onmilk production traits and somatic cell score (SCS) of dairy cows raised in north area of Iran. To calculate THI, ambienttemperature and relative humidity were obtained from the nearest stands. Milk production data included 67,774 test-day recordsfor milk, fat, and protein yield, fat, and protein percentage and SCS. These traits were associated with the average THI of the 3-dpreceding the respective measurement, which was divided into five classes, 40-50, 50-60, 60-70, 70-80, and ?80). Greatest milkyields were recorded in THI?60 (P<0.05). The highest decrease in milk yield in connection with THI values were recorded in theearly lactation (0 to 100 DIM). SCS was positively associated with the THI and increased more in early period of lactation. |
