A2O-Lanoster Farming, Saturday, April 10, 1993 GEORGE F.W. HAENLEIN Extension Dairy Specialist University of Delaware NEWARK. Del. Well, it’s still white outside and the ground hog, on target once again, saw his shadow Feb. 2. His predicted six more weeks of winter will be over soon enough, replaced by spring work in the fields. Along with the eager anticipa tion of warmer weather comes planning for the next crops to feed our milking animals cold-sea son forages, grazing, green chop, haylage, silage and hay. Planning, supported by already established crops, should focus on when and how best to harvest, giv en the almost certainty of weather interference. “How best,” where my plan- DEFOREST. Wis., Six Pennsylvania-bred Holstein bulls recently have had their status ele vated to “proven” according to the approval rating system of a Mid Western commercial artificial insemination business. All the bulls are graduates of the Progeny Test program used by the DeForest, Wis.-based American Breeders Service (ABS), a divi sion of W.R. Grace & Co., Conn. Through the company’s prog eny test program, a young test bull’s semen is distributed within contracted PT herds across the U.S. As progeny are evaluated for production capabilities, a decision is made to promote the bull to proven status. Among the six bulls raised by Pennsylvania Holstein breeders to receive that status is 29 H6OBS ning is concerned, means first and last the calendar date for the most nutritious crop (not the highest crop yield). It also means harvest of all the nutrition in the crop, not just 75 percent or only 50 percent because of the fickle dictates of weather, plant maturity and labor. So, how do we do it? Grazing is ideal in many ways. It’s certainly the most cost-effec tive harvest if rotation and electric fences arc well managed. Weather and plant maturity can have only limited influence. In recent years intensive, rota tional grazing has again gained in popularity because of its low cost. It has been called the Voisin system, or 90 years ago, the Ho henheim system, after the German agricultural college that pioneered the practice. THIS SB WILL MAKE IT EASY TO BUY Intergen-I Revere-ET, bred by Intergen I Ltd. of Pittsburgh, and was joint sampled through Golden Genes, Inc. 29 H 6083 Revere is a Klark son from a good-uddered Bell daught er. Based on 36 daughters in 23 herds, Revere is rated with PTAs of+l9o4M, +BSF, and +7 IP. With a PTAT 0f+1.23, Revere is a high total performance sire (+llO4 TPI). According to ABS, the daught ers are slightly above average in size, with sloped rumps, and very high and wide rear udders. Also joining the lineup is 29 H 6155 Pen-Col R Dauphin-ET, bred by Pen-Col Farms of Millville. Dauphin is an Arlinda Rotate son from a Very Good Ijon daught er. His dam is backed by the fam- Farmers in this region who practice cold-season rotational grazing, with rye for example, usually laugh all the way to the bank! More intensive is the green chop harvest, but weather and plant maturity can interfere. For this reason, it is used more in sum mer, when these variables are less of a factor. Haylage, silage and haying are the remaining alternatives. The dual risks of weather and plant maturity clearly favor haylage for the first crop harvest. Haylage harvest assures con tents of the most nutritious crop, and even a narrow weather win dow is usually sufficient for good harvest. This is especially true with the new technology of large bales ous Pen-Col Bell Dream cow, an individual known for her superior offspring and high protein production. Based on S 9 daughters in 48 herds. Dauphin is rated with PTAs 0f+1426M, +SOP, and +B2F. With a PTAT of +1.35 and an udder composite of +0.69, Dauphin is a type and Total Performance Sire (+951 TPI). According to the new release. Dauphin daughters are tall, strong, deep, and open. Additionally, Dauphin sires strong udder clefts and improved foot angle. Dauphin should not be mated to virgin heifers, ABS warned in the release. Two Holstein bulls bred by Obie Snyder of Imler, were added to the proven lineup. They are 29 H 6217 Singing-Brook Benchmark-ET wrapped airtight in plastic. I have seen and sampled large-bag hay lage that was one year old and still as palatable and of excellent quali ty as when made fresh. Cows even prefer it over com silage. This system maximizes nutri tional harvest with a minimum of labor and risks. A bonus to large-bale haylage is the long fiber, which counteracts the bad effects of short-cut silage and heavy concentrate feeding. There is no more risk of displaced abomasum. But what about hay? We cer tainly want to make some: how ever, the weather risks almost mandate forgetting the first cut ting or even the cold-season for ages. A few years ago, a major study was published by Dr. A. Kivimae Six Pa. Bulls Graduate To Provei and 29 H6IS9 Singing-Brook Nittany-ET. 29 H 6217 Benchmark is one of the first proven Melwood sons and, according to ABS’s analysis, sires daughters that excel in both milk production and confirmation. His proof was based on 34 daughters in 24 herds. Benchmark is rated with PTAs of +2506M, +IO3F, and +7OP. With a PTAT of +1.93, Ben chmark is an extremely high Total Performance Sire (+llBB. TPI). Benchmark daughters are tall, strong, deep-bodied cattle with superior rumps and deep udder clefts. Benchmark is the only Mel wood son from this elite cow fami ly and has already used as a sire of sons at ABS. The company’s position is that Crop Strategies of the Animal Nutrition Institute of the Swedish Agricultural Col lege in Uppsala. “Chemical composition and di gestibility of some grassland crops with particular reference to changes caused by growth, season and diurnal variation,” a 142-page publication, contains tremendous ly useful information on alfalfa, red clover, alsike clover and timo thy in planning the most nutritious feed harvest. It covers changes in protein, fiber, cellulose, lignin, fat, carotene, minerals, nitrogen free extract, and what was then really new, soluble carbohydrates. Today we hear more about car bohydrates, which can be very confusing. One hundred years ago, Dr. Max Rubber, a famous animal nu tritionist at the Munich Agricul- Benchmark should cross well on many of today’s popular Holstein bloodlines. Benchmark’s dam is Paclamar Marietta Bows, the Excellent-90 Bova daughter of Jackbuilt Chair man Mandy. Chairman Mandy has been a brood cow to such sons as Singing- Brook Mascot-ET. Marietta Bows herself also has another proven son, 29 H 6053 Marvel, who rose in some produc tion areas this sire summary. Marvel is the Starbuck son ranked +lOO7 and is positive in all type composites. The other Snyder-produced bull is a maternal brother to Ben chmark, 29 H 6159 Nittany. Nittany is an Enhancer son from Jackbuilt Chairman Mandy (EX-92-2E).