S Yeamkong, S Koonawootrittriron, M A Elzo and T Suwanasopee
Milk quantity, quality and revenue in dairy farms supported by a private organization in Central Thailand

2010

This study evaluated factors affecting milk yield per farm and per cow, milk quality (percent of fat, protein, lactose, solid-not-fat, and total solids and somatic cell count), and revenue per farm and per cow in dairy farms supported by a private organization in Central Thailand. The dataset included 34,133 monthly farm records collected from September 2003 to December 2007. Seasons were defined as winter, summer and rainy. Farms were located in  Muak Lek, Wang Muang, Phattana Nikhom and Pak Chong districts. Farm sizes were classified as small, medium and large based on number of cows milked per day. The model for each trait contained year-season and farm location-farm size as subclass fixed effects, and individual farm and residual as random effects.

http://www.lrrd.org/lrrd22/2/yeam22033.htm

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