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Full-Text Articles in Applied Statistics
The Effect Of Monensin On Lactation Dairy Cows: A Dose Response Evaluation, Zhanglin Cui, Daniel Mowrey, Alan G. Zimmermann, James T. Symanowski, Howard B. Green, John I. D. Wilkinson
The Effect Of Monensin On Lactation Dairy Cows: A Dose Response Evaluation, Zhanglin Cui, Daniel Mowrey, Alan G. Zimmermann, James T. Symanowski, Howard B. Green, John I. D. Wilkinson
Conference on Applied Statistics in Agriculture
Monensin (Rumensin®) was fed at doses of 0, 8, 16, or 24 ppm to 966 dairy cows in nine different geographical locations in the USA and Canada. A dose response analysis was conducted on the primary variable, milk production efficiency, to determine the most appropriate dose response function, establish a minimum effective dose, and, when possible, determine a maximum effective dose. Linear mixed models (SAS® Proc Mixed v6.12) were fit to the data. Linear contrasts comparing the non-zero doses of monensin to the control were done to initially determine a minimum effective dose from the 3 non-zero design points. In …
Evaluating Clinical Mastitis In Dairy Cattle Fed Monensin, Meihua Qiao, Daniel Mowrey, Alan Zimmermann, James T. Symanowski, Howard B. Green, John I. D. Wilkinson
Evaluating Clinical Mastitis In Dairy Cattle Fed Monensin, Meihua Qiao, Daniel Mowrey, Alan Zimmermann, James T. Symanowski, Howard B. Green, John I. D. Wilkinson
Conference on Applied Statistics in Agriculture
The effect of Monensin on clinical mastitis in dairy cattle was evaluated from data collected at nine geographical clinical field trials using 966 Holstein cows and heifers in the United States and Canada. At each site, a randomized complete block design was conducted. Monensin (Rumensin®) was fed at concentrations of 0, 8, 16, or 24 ppm in a total mixed ration beginning 21 days before first calving for all nine sites, up to 7 days after second calving for six sites, and 203 days after second calving for three sites. Quarter milk samples were taken and cultured to determine the …