Monments.Standard deviations (Table 1) were lowest for the two BP estimates for all testing environments be-cause those methods regressed outlier test day yield either toward breed mean or herd mean. Each cor-responding standard deviation was greater for AP than for MN testing except for the BP method considering herd mean. The large variation is not unexpected considering that no milking times were recorded in the Canadian data set and that daily yield for AP testing was assumed to be twice the single-milking weight. For TRI testing, the standard deviation for TIM was considerably larger than those from MN and AP testing; however, the standard deviations for both BP methods were smaller than that for MN testing. The standard deviation of estimated yield from TRI testing was smaller than that from AP
Comparison of Test Interval and Best Prediction Methods for Estimation of Lactation Yield from Monthly, a.m.–p.m., and Trimonthly Testing (PDF Download Available). Available from: https://www.researchgate.net/publication/13221765_Comparison_of_Test_Interval_and_Best_Prediction_Methods_for_Estimation_of_Lactation_Yield_from_Monthly_am-pm_and_Trimonthly_Testing [accessed May 8, 2016].