Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Medicine and Health Sciences
An Analysis Of A Herd-Based Lactation Curve Reveals The Seasonal Effect From Dairy Cows Fed Under High Ambient Temperatures, Sumpun Thammacharoen, Somchai Chanpongsang, Narongsak Chaiyabutr, Supattra Teedee, Attapol Pornprapai, Aemwika Insam-Ang, Channarong Srisa-Ard, Niran Channacoop
An Analysis Of A Herd-Based Lactation Curve Reveals The Seasonal Effect From Dairy Cows Fed Under High Ambient Temperatures, Sumpun Thammacharoen, Somchai Chanpongsang, Narongsak Chaiyabutr, Supattra Teedee, Attapol Pornprapai, Aemwika Insam-Ang, Channarong Srisa-Ard, Niran Channacoop
The Thai Journal of Veterinary Medicine
The presentinvestigation was carried out to demonstratethe effect of high ambient temperature (HTa) on lactation performance with herd-based measurement. One large dairy farm in Thailandwith more than 300crossbred Holstein cows milking each monthwas selected. The meteorological data was recorded once a week during the period of observation. Milking cows (n=90) were observed for a 10-month lactation curve based on their calving seasons: Summer, rainy and winter. The lactation curve was fitted by nonlinear regression using the reduced lactation persistency model.The climatic conditions revealed a high degree of temperature and humidity index (THI). The average THI throughout the year was 84.8 …
Association Of Snps In The Coding Regions Of Cd4 Gene With Mastitis Susceptibility And Production Traits In Dairy Cattle, Saqib Zeb, Nawab Ali, Sadaf Niaz, Arsalan Rasheed, Irfan Khattak, Naimat Ullah Khan, Yachun Wang, Tahir Usman
Association Of Snps In The Coding Regions Of Cd4 Gene With Mastitis Susceptibility And Production Traits In Dairy Cattle, Saqib Zeb, Nawab Ali, Sadaf Niaz, Arsalan Rasheed, Irfan Khattak, Naimat Ullah Khan, Yachun Wang, Tahir Usman
The Thai Journal of Veterinary Medicine
CD4 gene is reported to have significant role in various inflammatory conditions including mastitis. Therefore, the current study was designed to screen out single nucleotide polymorphisms (SNPs) in the bovine CD4 gene and to evaluate its effects on mastitis indicator and production traits. Total 201 milk and blood samples were collected from dairy cattle maintained at government dairy farms of Khyber Pakhtunkhwa, Pakistan. Milk samples were used for DHI test (milk composition and somatic cell count) and the blood for DNA extraction. SNPs were initially detected in the pool DNA samples followed by screening in the whole cohort. The association …