TABLE D Variable DHIAMUN MUN, a.m. MUN, i.m. MUN, av PUN, blood TABLE E Date Milk lb Fat% Pro % DMI DIM DHIA Blood A.M. [rm, kg day MUN MUN MUN MUN Oct 95 8034 3.56 3.10 21.1 142 10.7 Nov 95 73.7 3.81 3.17 21.3 149 15.0 13.9 Dec 95 73.7 3.70 3.24 22.2 163 13.6 13.4 12.8 14.6 Jan 96 68.0 3.71 3.17 19.9 148 15.0 11.0 11.6 12.0 Feb 96 67.4 4.14 3.24 19.4 157 13.2 10.5 11.7 14.4 Mar 96 74,4 3.85 3.20 20.9 142 11.9 11.2 11.1 12.4 Apr 96 71.7 3.98 3.28 20.2 153 11.8 9.9 10.4 13.1 May 96 76.8 3.78 3,12 21.6 142 )1.2 i 1.3 10.4 10.5 Jun 96 69.5 3.52 3.12 17.9 ISO 12.5 12.9 12.3 13.1 Jul 96 66.7 3.54 3.09 19.2 147 12.4 • 10.1 10.1 12.0 Aug 96 63.8 3.32 3.02 18.8 159 13,6 15.7 11.9 14.8 ~ 1 When you make your living with milk, you need a partner who pours on the services. In addition to paying out farmer members an average premium of 30 cents pel hundredweight, no one else can offer the wide array of We focus our efforts on developing resources that can help generate more revenue or achieve real cost savings for you. With our help, the average No. Mean 295 12.9 12.1 295 295 14,1 295 13.1 295 12.7 Dairylea delivers guaranteed markets, competitive milk prices and the comprehensive package of services you need programs and services available exclusively from Dairylea farmer can also save up to 40 cents per hundredweight To learn more about how we pour it on for our members. please call us toll-hee at SOI 1/654-8838, today Dairylea Cooperative Inc.^ A imvkci fai yarn milk A jwtiwi foi yam /aim Std. Dev. 2.9 2,4 2.5 2.3 2.9 \ - >« 'V Minimum Maximum 2.3 23.0 6.3 20.6 8.0 22.6 7,9 20.5 6.0 24.0 Lancaster Farming, Friday, January 10, 1997-G29 FOCUS samples. The milk urea a.m. and the milk urea p.m. represents sam ples taken on sample day and analyzed for urea concentration. Mean value for blood urea, milk urea a.m., milk urea p.m., and DHIA milk urea were very similar. Blood levels were 91% of the DHIA milk urea concentration (SE=.Ol4). The milk urea a.m. was lower than the milk urea p.m. by about 2 mg/dl (.856xMUN p.m.) (SE=.OO9). We would expect the milk urea in the afternoon to be higher than the morning due to the fact that we feed at 11 a.m. The average of the a.m. and the p.m. milk MUN is 13.1; very close to the average of DHIA milk urea of 12.9. Standard deviations are very similar for the different tests. The DHIA MUN has the highest SD 2.9 compared to 2.4,2. S and to 2.9 from milk a.m. and p.m. samples and blood tests from the clinical laboratory. The range in urea values is similar across the different tests, but note the low of 2.3 for the DHIA MUN test and the high of 23.0. The range of the DHIA MUN is wider than the clincial lab’s values. The same conclusions about a herd concerning MUN could be v/ %t\ BREAKING MILK RECORDS! Lancaster Farming Carries DHIA Reports Each Month! r' NEW Zhutch- mini . barn <r ■ '«* FflflAf THE PEOPLE WITH THE BEST DESIO Year-Round Hutch The Mini-Barn is 7’xB’x4 1/2’ made with tan or cream colored plastic which makes it work better in the summer and less temperature change in winter. CAN BE USED FOR ALMOST ANY TYPE OF LIVESTOCK!! Also Feeders • Waterers • Calf And Hog Hutches Available See Us At The PA FARM SHOW On The Main Floor Lot #l2O & 121 - CALL TODAY. LET US HELP YOU SAVE MONEY - DEALER INQUIRIES WELCOME Calf Hutches & Equipment Kettlersville, OH 45336 800-837-8691 AmmmmSmmmmm (Continued from Page G2O) made from any of the tests. The mean and standard deviation are similar for all tests. On two of our monthly tests, the MUNs were outside the range of 10 to 14 mg/dl for the herd. One test was associated with higher protein content of the ration above what was needed and one test was when haylage was very moldy and feed intake dropped significantly. Therefore, we can use these mean values to “flag” a feeding program. Urea values from NBC dairy with milk and feed intake. Milking at S a.m. and 4 p.m. Blood col lected at 2 p.m. Feeding at 11 a.m. and small top-off at 4 p.m. In Conclusion Milk urea may be a useful test for diagnosing herd problems and identifying opportunities to im prove protein supply. However, one word of caution: milk urea may be within acceptable ranges of 10 to 14 but protein may still not be adequately balanced. Final ly, milk urea should never be interpreted without evaluating the entire feeding management program. (Dr. James Ferguson is an associate professor at the Center for Animal Health and Productivi ty, New Bolton Center, of the Uni versity of Pennsylvania.) ED
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