DHA VIRGINIA ISHLER UNIVERSITY PARK (Centre Co.) The 1997 cropping season lias left many producers with either no to very little haycrop for ages. Com silage will be the pre dominant, if not the total forage, fed on many farms. There ate several issues to consider when managing com silage rations for the dairy herd. Due to the scattered tain show ers that fell throughout the North cast, com growth was extremely variable. This means that the nu trient content and quality of com silage will be far from consistent Forage analyses will be essential in determining how to manage thw. high com silage diets. All msa is.a®«BBa 'swim to High-Tech Solutions For Agriculture! 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Byproduct in gredients that complement a heavy com silage ration and that help balance fiber are com gluten feed, brewers grain (wet or dry). 7 Ton Tandem Nurse Wagon • 2-1/2” 5,000 Lb. Spindles • Adjustable Clevis Hitch «Standard 11 Lxls, 8 Ply Tires SEE THE AG-CHEM EQUIPMENT DISPLAY AT THE KEYSTONE FARM SHOW January 6 & 7 - York Fairgrounds, York, 1-800-760-8800 • Prompt #2 Dmmlmr InquMm• Wmleomm wheat midds, soyhulls, and cot tonseed. Particle size of com silage will be important to help maintain good digestibility and normal rumen function. When com silage makes up a greater proportion of the ration, it is recommended to have S-IO percent of the particles greater than 0.75 inches, 40-50 percent of the particles between 0.75 and 0.31 inches, and 40-50 percent of the particles less than 0.31 inches (Penn State particle size separator, 1996). Com silage that is chopped and rolled should ' have between 10-15 percent of the particles greater than 0.75 inches. The rest of the particle size distri bution would be similar to what was stated previously. Since com silage normally tests around 8-9 percent crude protein, more supplemental protein will be needed compared to heavy hay or haylage diets. Ideal protein in gredients include both soy- and animal-based sources. A nonpro tein nitrogen source like Feed grade urea can work well in com silage diets. However, if appreci able amounts of urea are fed in the milk cow diet, then some urea should be included in the close-up dry cow diet. This allows the dry cows to become acclimated to having urea in the ration and mini mize off-feed problems. , n JD 8000 Series Front Mount Tank Systems •Ag-Chem Exclusive Tear Drop Design For Better Forward Vision • 250 & 400 Gallon Options • Tank Mounted Close To Frame Of Tractor • Meet John Deere Specifications • Easy To Mount & Dismount • Multi-Use (Starter Fertilizer, Herbicides, Insecticides) Cat Challenger Series SML 500 Side Mount Tank Systems • Works With 60’ Through 90’ Track Spacing & 16” Through 32” Belt Widths • 28” Ground Clearance On Outside Of Tracks • 250 Gallon Tear Drop Design For Better Forward Visibility Cab Access • Easi • 2” Banjo Ball Valve • 2,000 Lb. Jack Wlf TS MdirrisCl .vabmtsC •&!***•» J-W Lancaster Fanning, Saturday, December 27, IM7-A2l There will be mineral feeding changes that occur with increasing proportions of com silage. More supplemental calcium will be in cluded in the diet because of the low calcium content in com sil age. An added potassium source may be necessary to meet the milk cow’s minimum potassium re quirement of 1.20 percent (dry matter basis). If urea is included in the diet at substantial levels, then maintaining adequate sulfur levels in the diet will be important In cluding a buffer in the ration at 0.8 percent of the total ration dry mat ter would be a sound recom mendation. There are other miscellaneous issues to consider if com silage is going to be the predominate for age fed throughout the winter. Monitoring body condition on all animal groups beind fed high com silage dietes will be critical. The potential exists for cows and heif ers to become too fat This can lead to disastrous problems in the future for ketosis, fatty livers, poor diy matter intakes, and low production to name a few. PA Average Farm Feed Costs For Handy Reference To help farmers across the state to have handy reference of com modity input costs in their feeding operations fra: DHIA record sheets or to develop livestock feed cost data, here’s last week’s average costs of various ingredients as compiled from regional reports across the state of Pennsylvania. Remember, these are averages, so you will need to adjust your fig ures up or down according to your location and the quality of your crop. Com, No.2y 3.10 bu., 5.55 cwL Wheat, No. 2 3.38 bu., 5.64 cwL Barley, No. 3 2.33 bu., 4.99 cwt Oats, No. 2 1.73 bu., 5.39 cwt Soybeans, No. 1 6.71 bu., 11.21 cwt Ear Com —81.40 ton, 4.07 cwt. Alfalfa Hay 162.25 ton, 8.11 cwt Mixed Hay 151.25 ton, 7.56 cwt Timothy Hay 7.63 cwt ft If# BREAKING MILK RECORDS! Lancaster Farming Carries DHIA Reports Each Month! ....... All-Plant LIQUID PLANT FOOD 9-18-9 PLUS OTHERS! P • Contains 100% white ortho phosphoric acid. Made in USA. Non-corrosive. Won’t settle. 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