Pi— Lancaster Farming, Saturday, November 7,1981 Researcher reports the case of 6 the whiteless egg’ UNIVERSITY PARK - Irreverently put, Reynaldo Resurreccion is a poultry sleuth who recently sought to solve an intriguing mystery: the case of the wlutelesseggs. An assistant professor of veterinary science at Penn State, Resurreccion says he think he’s the first scientist to study albumin free eggs. “I was fascinated,” he recalls, remembering his first encounter with the immature chicken eggs containing only a perfectly for med, normal-sized yolk. “While yolkless eggs are not unknown, 1 could find no reports of eggs without albumin in the scientific literature of the past 30 years.” TJie story began about a year ago, when a Schuylkill County poultry farmer began finding a worrisome number of ab normalities in his eggs. About two percent of the 53- week-old layers in one house and the 74-week-old layers m another were producmg a combination of fewer eggs, an unusually high number of small normal ones—and some whiteless ones. Many of the latter had shells that were rough j» my\^m One trip through your field SAVES you TIME, MONEY and most important, your valuable SOIL! ★ 5 - 7 &9 SHANK IN STOCK: CHECK THESE FEATURES: • Unique IW’x 2” high clearance shanks. Choice of Torsion-Master or Spring-Master shanks. 15" spacing between shanks. • Heavy-duty 93Vfe” frame depth. Combination yoke -block clevis and tongue jack. “Converta-Hitch” allows easy leveling adjustment. • Hydraulic axles, 6 bolt hubs & rims for HLxls” flo tation tires, transport safety-lock. 2 -8” , stroke cylinders with stroke control for precise depth setting. • 20" dia. disc coulter blades slice stalks, leaves, stubble and root crowns into small bits, eli minates bunching and plugging. 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Some of the abnormal eggs and the hens that laid them, as well as a few of the flock’s normal chickens, were brought to Penn State’s Poultry Diagnostic Laboratory. “We cultured the eggs looking for signs of bacteria, mold, virus or other microorganisms,” recalls Resurreccion. “We tested the chickens’ blood, searching for antibodies to previous infections. “Because albumin is manufactured by a specific part of the oviduct, the magnum, we did extensive tests on the magnum tissue. We examined the tissue under an ordinary light microscope, and under scanning electron and transmission electron microscopes.” As Resurreccion reported" in June at the 53rd Northeastern Conference on Avian Diseases at Narraganset, R. 1., he and electron nucroscopist -Bridget Stemberger discovered two interesting facts. “While the abnormal eggs were free of virus, bacteria or mold,” he explains, “both the normal and FINANCING AVAILABLE abnormal hens had been infected recently with infectious bronchitis virus. “More intriguing was the microscope analysis of magnum from normal versus abnormal hens. We found that magnum tissue from the abnormal chickens was heavily swollen with secretion. The cells were so full of albumin which hadn’t been released that normal cellular details nearly were obliterated. “Significantly, there was no inflammation. The swelling was caused by the failure of the secretory cells to release the albumin that apparently had been manufactured normally. Something was inhibiting the trigger mechanism that releases albumin.” Though he cannot pm the secretory failure on the bronchitis virus, Resurreccion suspects a connection. As he explains, infectious bronchitis is a common disease of chickens. Most often, it affects the respiratory systems of chicks. Some suffocate. However, in the susceptible adult hen, IBV shows only mild respiratory symptoms. 21,000 watts watts If service is important to you, come to Maxi-Power a customer service oriented company. 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PA Milanville, PA 717 oe * o c ß o 717-729-7988 717-264-9588 “The infection in hens is ex pressed as a dramatic, but bnef (about two weeks), drop in egg production,” says Resurreccion. “In addition, the shells sometimes are ridged and wrinkled, or the eggs are encased in a membrane without a shell. Moreover, sometimes IBV affects the egg quality, causing watery albumin. “We suspect an IBV connection because all the chickens recently had been infected and some of the QUAKERTOWN - The Penn sylvania Morgan Horse Club is looking for owners of registered Morgan horses to become mem bers and join in activities. The club sponsors Year End Awards in many divisions with points being given for open com petition as well as all-Morgan. For MAXI-POWER PTO GENERATORS watts fy MC:. >’' f 7? \ : J V-S K <. > 4 * ’ . O Economical to Use • Simple to Install * Easy to Operate • Eliminates Dirty Chutes • Directs Flow of Feed • Saves Wear on Silo Chutes • Adapts to Any Make Silo £u... P. O. 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