It Must Be ANDY ANDREWS Lancaster Fanning Staff MANHEIM (Lancaster Co.) Wintertime is often synonymous with respiratory concerns in flocks. Poultry producers should examine viable vaccination prog rams as a result, according to a poultry expert from the New Bol ton Center. Dr. Andre F. Ziegler, D.V.M. and resident in avian medicine and pathology at the University of Pen nsylvania’s School of Veterinary Medicine, spoke to about 36 pro ducers and agri-industry represen tatives on Monday at the Penn State-sponsored Poultry Manage ment and Health Seminar at Kreid er’s Restaurant Through the diagnostic period November 1995 to February 1996, working with the New Bolton Cen ter, Penn State, and Summerdale laboratories, Ziegler and other vet erinarians have noticed a predict able spike in the mortality pattern ■#4?W Winter, Because Poultry Respiratory Concerns Abound of birds that ate challenged by an array of respiratory and other dis eases during the winter season. However, “most companies are having minimal respiratory prob lems, which is good news,” said Ziegler. Ziegler reviewed several disdct poultry respiratory challenges. One of them, laryngotracheitis (commonly called LT), matches the numbers of confirmed and sus pected cases seen in the previous year. “It's about the same as it was last year for this period of time,” said Ziegler. But sorting the confirmed from the suspected cases proves diffi cult for a variety of reasons. In confirmed cases, the labor atories have been able to isolate the virus or see the associated lesions in the birds* tracheas. In suspected cases, the labs cannot isolate the virus and make their diagnosis based on clinical signs, mortality, and so forth. ■m * < I v'" & >* xr¥* F >w 4- *« : ! iJSV;£-,.• * • ■* There have been three con firmed cases ofLT in layers, two in broilers, and (me in pullets. There have been three suspected cases in broilers and one suspected in pul lets. Many of the confirmed and suspected cases are located in vari ous regions, but mostly north and west of the city of Lancaster. Symptoms of LT include a noticeable “gasping for air” (also called “drawback”) in the birds. There’s a sound similar to a moist cough and gagging. In severe cases, according to Ziegler, “you can actually see (the birds) flinging blood from the trachea.” When exposed, there are fibrin ous “plugs” of material in the tra chea, with bleeding throughout Vaccination has been used. In one case, there was a question of the efficacy of a vaccine. When the diluent was replaced with simple distilled water, foe effficacy was boosted from 90 minutes to the recommended two hours. ? 5 patlK School of Vofotinary Madleina, Ml, apbkato about 36 pro duoara and agri-industry rapraaantatlvaa on Monday at tha Pann Stata-tponaorad Poultry Managamant and Haalth Saminar at Kraidar'a Raataurant. At right la Dr. Barrett S. Cowan, aaaoclata profaaaor of vataiinary acianca, Pann Stata Wiiay Laboratory. f*> * - ' * K * *< ( V * 4 ; > f'V i f.x> x ' 4 ♦„* ' i ' N <v\>y£ - ->*'• •?. * t* 1 * » V* > s ?.>,,. X" >•■ •i V x > ■** * V < Vv 1 ' * •!> * * * Lancaster Farming, Saturday, FSbniary 17,1996-Al9 Wa will ba rscaiving tobacco on Thursday Fobruary 22,1996 from 7(30 am to 3(00 pm 609 Tobacco Seed For Sale SOUTHBOAT LEAF TOBACCO 24 Meadow Lane, PO Box 192, Paradise, PA 17562 717-687-9517 DON T GET CAUGHT WITHOUT POWER WHEN THE NEXT STORM HITS v-Sm. .-it e *r * '» s ‘sn-V X XV ‘ -V* •*?» < T * v V ",4- f -ft Another disease challenge has been infectious bronchitis (IB). “Infectious bronchitis is one (dis (Tum to Page A 23)
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