Poultry Science o DEM BONZ, DEM BONZ Roland M. Leac Jr. Professor of Poultry Science On the average, five percent of all broilers and turkeys are lost because of skeletal deformities. For many producers, this appears to be accepted as “facts of life,” since cries of pain are not eli cited until losses reach 10-20 percent. In many instances, high inci dences can be attributed to acci dents in feeding or management. In other cases such as “field rick ets,” the condition disappears as quickly as it appears. During its presence, 50 percent of the birds could be lost or crippled for life. In order to understand the stress on a chicken or turkey skeleton, try walking in a squatting position on your tiptoes for a day. Do you think your joints and tendons would be stressed? LAND PRIDE EB PRIMARY SEEDER Productive Planting from the Seeding Experts Land Pride quality and Great Plains grain drill technology is built into this rugged and productive Primary Seeder. Used for planting a wide variety of grass seed in prepared l seedbeds, this tool is designed for low maintenance and easy of use. Features are built-in to assure you of a top quality planting job and top quality results. PENNSYLVANIA Straley Farm Supply, Inc. 1760 East Canal Road Dover, PA 1731 b 717-292-2631 Keller Brothers R 7 Box 405 Lebanon, PA 17042 717-949-6501 1950 Fruitville Pike Lancaster, PA 176C1 717-569-2500 Caldwell Tractor & Equipment, Inc. 480 U S. Route 46 Fairfield, N J. 07006 201-227-6772 Rodlo Tractor Sales North White Horse Pike Hammonton, NJ 08037 609-561-0141 Frank Rymon & Sons, Inc. RD 3. Box 355 Washington, N J. 07882 201-689-1464 Nlcarry Equipment Co. Reed Brothers Stoltzfus Farm Service RD 2, Rt. 61, 3 Miles S. of Petticoat Bridge Rd Cochranville, PA Leesport, Reading, PA Columbus, N.J. 08022 215-593-2407 215-926-2441 609-267-3363 Marshall Machinery, Inc. Route 642 Honesdale, PA 18431 717-729-7117 Pikeville Equipment Inc, RD 2, Oysterdale Road Oley, PA 19547 215-987-6277 Capital Region Because of the unique posture for bird locomotion, it is more sen sitive to a variety of factors which influence skeletal development Since nutrition was the first factor to be recognized, most feeds are formulated to protect against nutri tionally induced leg deformities. Litter condition is an obvious factor affecting skeletal health. In some instances, bacterial or viral infections can greatly increase lameness and joint deformities. Finally, genetic selection can be an effective means of altering the incidence of skeletal abnormali ties. However, this has to be balanced by maintaining other selection criteria related to main taining the bottom line, such as growth rate and meat yield. The moral of the story —pretty legs are OK as long as you have the other prerequisites for maximizing productivity. Genetic selection is not the only area where conflicts arise. Exer cise (in proper quantity) has been shown to have very beneficial Tractor Parts Co. 335 Central Road Bloomsburg, PA 17815 717-784-0250 Stouffer Bros. Inc. 1066 Lincoln Way West Chambersburg, PA 17201 717-263-8424 M.S. Yearsley & Sons West Chester, PA 215-696-2990 Norman D. Clark & Son, Inc. Honey Grove, PA 717-734-3682 Loysville, PA 717-789-3117 r eterinary Science Deerfield Ag & Turf Center, Inc. RR 2 Box 212 Walsontown, PA 17777 717-538-3557 NEW JERSEY effects upon skeletal metabolism in other species. However, increas ing exercise in the poultry house will lead to significant increases in feed consumption, resulting in poorer feed conversion and increased costs of production. We also need to keep abreast of developments with other species. For example, skeletal problems are becoming more prevalent in fast growing swine and horses. For humans, there is a tremend ous amount of research effort devoted to osteoporosis. People are living longer and are more like ly to acquire this disease since it is associated with aging. NASA is also extremely interested in this research since astronauts experi ence significant bone loss during prolonged spaceflight. On a recent space shuttle, rats received an experimental drug developed by Merck Pharmaceuti cals for the purpose of reducing bone loss. This experiment was conducted in collaboration with the Center for Cell Research at Penn State University. Other research at Penn State has utilized the laying hen as a model for studying bone loss since a four pound laying hen metabolizes as much calcium in a day as a 150-pound adult human. Degenerative arthritis is another human disease which has stimu lated research on cartilage meta bolism. This disease results in the destruction of the cartilage in joints and can be extremely painful as well as crippling. Research at Penn Slate is GOINi^jgKFIUSINESS 30% OFF EVERYTHING THROUGHOUT EXCEPT TOYS & POWER EQUIP. JOHANNING’S "peutUiy Sto%t “Take Quality Home" Lancaster Farming, Saturday, December 12, 1992-C3 focused upon studying cartilage tor * n poultry meat production, metabolism in chickens and turk- From an engineering standpoint, 'eys. The goal of this research is to 1,16 susses placed upon the skelet gain a better understanding of the a * system make some tosses contribution of cartilage to leg because of skeletal deformities a deformities in poultry. These given - research findings may lead to a However, research on skeletal ter understanding of how to metabolism can minimize these maintain proper cartilage health losses and generate information and thus minimize the develop- helpful in dealing with human dis ment of arthritis. eases such as arthritis and Losses due to skeletal deformi- osteoporosis, ties are a significant economic fac- Corn, Soybean Conference Sets Environment, Market Topics COLLEGE PARK, MD. Soil compaction and acidity, groundwater quality and safeguards...these topics consti tute the morning program for the 1993 Delmarva Com and Soybean Conference, the largest wintertime agricultural exposition on the Delmarva peninsula. The 13th annual daylong educa tional event is scheduled Feb. 17 in the Wicomico Youth and Civic Center at Salisbury on Maryland’s lower Eastern Shore. Sponsors include agribusiness organiza tions, along with the cooperative extension system at land-grant universities in Delaware, Mary land, and Virginia. Rounding out the day’s prog ram will be presentations on “Managing Crops on Droughty Soil,” “What Lies Ahead Environ mentally?” and “Marketing Grain Out of Baltimore.” All relate to the conference theme, “Farming in Today’s Envi ronment,” said Paul L. Gunther, agricultural science agent in Queen Anne’s County for the Get MOOOmn’ Owith Milk! THE STORE 20% OFF 2460 New Holland Pike, Lancaster, PA 17601 '/, Mile West of Mcado»brook Farmers Market, Rt. 23, Lcola 1-800-369-3736 (717) 656-3700 or (717) 291-4420 Daily 8 AM - 6 PM Sat. 8 AM - 5 PM Cooperative Extension Service, Maryland Institute for Agriculture and Natural Resources. Gunther heads the planning committee for this year’s Delmarva Com and Soybean Conference. Activities at the Feb. 17 event will get under way at 8:30 a.m. with free coffee and fresh soybean doughnuts prepared by the Mary land Soybean Board. Commercial exhibits and edu cational displays also will be open for visiting. Two Delmarva Com and Soybean Conference scholar ship awards will be presented prior to the noon break. Individuals planning to attend the conference should purchase lunch tickets at $3 each by Feb. 10 in order to guarantee themselves a noon meal. Tickets are available from cooperative extension ser vice offices throughout the Delmarva area. Admission is free for the program sessions. The Wicomico Youth and Civic Center is located behind the Salis bury Mall, off U.S. Highway 50, in southeast Salisbury. f*~ M?'" 1 I * / wc SHIP LPS A> YWIU.RE | a mrirni\ Order By Mail Or Telephone HJPqI 6&
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