A3O-Lancaster Fanning, Saturday, May 28, 1988 Pennsylvania’s DHIA Offers New Somatic Cell BY J. BOYER, W. HEALD PaDHIA and Penn State Exten- sion STATE COLLEGE (Centre) The most costly disease in dairy cattle is mastitis, and the most accurate measure of udder health that appears on DHIA records is the linear score of somatic cell counts. Estimates of mastitis costs are $l5O-$2OO per cow per year, and nearly 70% of the dollars lost to mastitis are due to subclinical, or hidden mastitis. The only practi cal way to measure this hidden mastitis is with DHIA somatic cell counting monthly, Starting this month, of you are enrolled in the somatic cell testing program, you will find a new “Somatic Cell Management Report” included with the more familiar DHIA monthly reports. This report contains expanded analysis in a different format from the information already available on the Herd Summary Report. To keep costs to you as low as possi ble, the report is laser-printed on both sides of a sheet of plain white paper. The front side includes cur rent test and historical information for your herd. The back side lists individual cow data for the highest fifty somatic cell cows in your herd, or less if your herd has fewer than SO cows. Information in related area is logically grouped in boxes on this page. Linear Scoring The first of these boxes shows a distribution of cows by SCC linear score for the current test date in a manner similar to that already available on the monthly herd summary. The mean linear score for your herd as well as the average weighted SCC/ml for the sampled herd are given here. The first of these can be used as an indicator of overall herd health, while the sec ond should correspond roughly with the measured bulk tank soma tic cell count on this sample day if all of the cows in the herd contri bute milk to the tank. This can vary greatly from the processing plant test. One cow can prepuce 40% of the cells in the tank, and, if her milk is withheld from DHIA or tank milk, a large difference can be see in SCC/ml. Herd average linear scores of 3.0 and below are best for maximum milk and profit. In the next box, a monthly com parison of the average linear score for the herd on each lest date over the last year appears. For the cor responding test dates, you will sec the number of new infections that began on the indicated date, and the number of chronic infections in the herd at that time. A cow is con sidered to be infected when her linear score is 4.0 or greater, severely infected when her linear score is 5.0 or greater, and chroni cally infected when her linear score is 5.0 or greater for more than one test in a lactation. The totals given may help you to evaluate the overall effectiveness of your mas titis treatment program. You should be careful to observe two things: first, because this is a new program, some of the trends for these items will not be available for all past months. Over time, the report will become more complete. Second, once a cow is chronic during a lactation, she remains chronic regardless of whether she has'mastitis on the current test. Therefore, the.totals given for some items need to be Management Report OHIA SAMPLE HERD-2 ORCHARD ROAD UNI V PARK, PA IGBO2 23-43-0395 MEANI RAW SCO I 9+ 8 I 7 I 6 1 5 I 4 3 I 2 I LS LEVEL NO PCT NO PCT NO PCI NO PCI NO PCT NO PCT NO PCI NO PCI 18 2 7 83.000 O 00 O 0~0 T <To O 0~0 0~0 218 1 t <To 327 2 DATE TESTED 1/21/Bi DATE TESTED MEAN SCORE NEW INFECTIONS CHRONIC INFECTS FIRST LACTATION CURRENT I NEW NO PCX NO PCT O Ol 0 0 0 DAYS IN MILK 0-30 31-99 100 - 199 200 - 299 300 ♦ AVG/TOTAL considered carefully in evaluating the udder health of your herd. A chart in the middle box of the page is intended to graphically summar ize mean linear scores for your herd over the last year. This chart corresponds to the mean linear scores from most to least recent test, just as they are shown in the box above. Immediately at the right of this graph are numbers indicating the amount of milk in pounds and number of dollars lost due to high somatic cell levels. Note that the dollar adjustment is based on the observation that a cow loses about 1.5 pounds of milk per day for each linear score count above 2.0. It docs not attempt to take into account intangible (but-signific ant) effects of high SCC such as the loss of dollars on premium programs when infected cows’ milk is used in the bulk tank, or the cost of treatment for mastitis. A current infection status box in the middle left, gives a breakdown of newly infected, and chronically infected cows based on the first and later lactations. These same categories are used in the boxes at the very bottom of the herd SCC page, which attempts to break down the herd into groups based on the number of days in milk. For each of these stages of lactation, the number of cows, amount of testday milk, mean linear score, and number of new infections arc shown. First lactation groups should obviously have fewer new infections and lower linear SCC scores because of their less fre quent exposure to mastitis causing bacteria. The back page is an individual cow summary which shows the indentity of the animal by bam name and control number. Cows arc ranked in decreasing order from high teslday SCC to low. The mean linear score for this lactation 1 1/17/87 12/20/87 1/21/88 2 7 3 8 3 6 CURRENT INFE CHRONIC CURRENT NO PCT NO PCT O 0 0 1 10 0 FIRST LACTATION TESTOAY MILK NO COWS appears in the next column. Pro duction information including testday milk, an estimated (or actu al) 305, days in milk, and milk lost due to SCC appear in the next col umns. The percentage of this indi vidual’s contribution to the bulk tank appears next. You should note that even though the severity of an infection is based on the linear score, the amount of somatic cell in the bulk tank is based on the raw SCC/ml. So a handful of cows, or even a single, severely infected animal, may make the largest per centage contributions to the bulk tank. Frequently this milk should be withheld from the lank until additional SCC tests give a result nearer herd goal. Finally, some historical and NEWARK, DE Rocky- Mount Lily, owned by Norman W. Voss, Jr. of Clayton was selected as the IsBB Delaware Holstein Show Grand Champion on Satur day, April 23, by show judge Jack King from Ocean City, Maryland. Grand champion of the junior show went to Dixiedel Wileeda Dixiemyr owned by George Dixon also of Clayton. Junior champion of the open show went to Vossmon Dingo Mandi owned by Norman W. Voss, Jr. Sam Dixon and Family of Clay ton were named the Premier Breeder and Exhibitor of the show. 1988 DELAWARE HOLSTEIN SHOW RESULTS Junior Fitting 1 Gina Pierson, Clayton, 2 Debby War ren, Kenton, 3 Sam Dixon, Clayton Junior Showmanship 1 Debby Warren, Kenton, 2 Sam Dixon, IV, Clayton, 3 Randy Dixon, Clayton Ssnior Fitting 1 Nicole Givens, Clayton, 2 Kenny War PENNSYLVANIA DHIA SCC MANAGEMENT REPORT DISTRIBUTION OF COWS BY SCC LINEAR SCORE MONTHLY COMPARISON 10/17/87 9/17/87 3 4 e 0 ON STATUS SECONDt + ) LACTATION NEW CHRONIC "no pct no pct i 10 o MEAN IS Rocky-Mount Tops Show Delaware Holstein 6/12/87 8/17/87 4 5 5 9 MEAN LS (LAST 12 MONTHS) 1 10 0 no cows reproductive information is given for each of the cows that appears on this page. Cows confirmed pregnant are marked in the last col umn with a ‘Y’. For bred cows, a due date will also appear. In order to help you identify problem ani mals, the number of times a cow has had a severe infection is given for each with linear score 5.0 or greater. You can track seasonal problems, or the progress of your mastitis program by noting the first infection dates given for those ani mals that have had some history of infection. Determine the cause of the new infections and correct the situation to protect uninfected cows. For help see your county agent or herd veterinarian. ren, Kenton, 3 George Dixon, Clayton Senior Showmanship 1 Kenny Warren, Kenton, 2 George Dixon, Clayton, 3 Shawn Cook, Kenton Intermediate Calf 1 Vossmon Mandmgo Della owned by Norman W Voss , Jr, Clayton Senior Heifer Calf 1 Strawberry Acres Mandmgo Angl owned by Norman W Voss, Jr, Clayton Summer Yearling Heifer 1 Vossmon Warden Anita owned by Nor man W Voss, Jr, Clayton Junior Yearling Haller 1 Dixiedel Ned Boy Goldy owned by Samuel Dixon, IV, Clayton Senior Yearling Heifer 1 Vossmon Dingo Mandi owned by Nor man W Voss, Jr, Clayton. Junior Champion • Junior Show Dixiedel Ned Boy Goldy owned by Samuel Dixon, IV, Clayton Junior Champion - Open Show Vossmon Dingo Mandi owned by Norman W Voss, Jr, Clayton Novice Fitting t Showmanehlp 1 Gina Pierson, Clayton, 2 Philip Busker, Harrington, 3 Nicole Jacobs, Kenton Two Year Old Cow 1 Cool-Del Valor Heather owned by Uni versity of Delaware Three Year Old Cow 1 Dixiedel Mil-Nor Povaro owned by Sam Dixon, Jr & Sons, Clayton, 2 Dixiedel Wilee- 05/17/88 3/07/87 5/04/87 4/11/87 5 9 4 8 SECOND(+) LACTATIONS MEAN LS TESTDAV MILK This is intended to give you some idea of the items that are available on this new somatic cell report. It was not designed to explain the value of somatic cell testing or to show you how to use information given. More on the value of mastitis treatment and the use of somatic cell testing and reporting is available in the book let “How to Read Your DHIA Reports”. Or, you can request fact sheet DSE-87-52, “Using DHI Somatic Cell Counts to Increase Production and Profits” from your County Extension office. As always, if you suspect problems with the information contained here, or with any of your DHIA records, you should contact Dixie Burris at 1-800-DHI-TEST. da Dixiemyr owned by George Dixon, Clayton Four Year Old Cow 1 Dixiedel Chairman Charity owned by Kenny Warren, Kenton 1 Rocky-Mount Lily owned by Norman W Voss, Jr, Clayton Dry Cow 1 Vossmon Creek Claret owned by Nor man W Voss, Jr, Clayton. Sanlor Champion • Junior Show Dixiedel Wlleeda Dixiemyr owned by George Dixon, Clayton Grand Champion - Junior Show Dixiedel Wlleeda Dixiemyr owned by George Dixon, Clayton Senior Champion - Open Show Rocky-Mount Lily EX-92 owned by Nor man W Voss. Jr, Clayton Grand Champion - Opan Show Rocky-Mount Lily EX-92 owned by Nor man W Voss. Jr, Clayton Udder Claes 1 Rocky-Mount Lily EX-92 owned by Nor man W Voss, Jr, Clayton 1 Sam Dixon, Jr & Sons, Clayton Junior Bast Three Famalss 1 Norman W Voss, Jr, Clayton Senior Bast Three Females 1 Sam Dixon, Jr & Sons, Clayton Premier Breader/Exhlbltor Sam Dixon & Family, Clayton 1 ft 0 NO PCT 4 36 3 1/11/87 2/07/87 5 4 5 4 I DUE TO :c LEVELS LOSSE HIGH Si MILK MONEY 421 $49 93 2 2 2 9 5 2 2 4 Aged Cow Produce of Dam
Significant historical Pennsylvania newspapers