The World Poultry Industry

Application of infrared thermography as an indicator of heat and methane production and its use in the study of skin temperature in response to physiological events in dairy cattle (Bos taurus)

“…Feed is a major expense in livestock production systems accounting for 60-80% of the total costs across the most common farm animal species (poultry: Henry and Rothwell, 1995;swine: Rauw et al, 2006;dairy: Bath, 1985;beef: Ferrell and Jenkins, 1985). There are also environmental issues associated with livestock production i.e.…”

Feed additives in broiler diets to produce healthy chickens without in-feed antimicrobial compounds

“…육계는 지속적인 유전자원의 개량과 효율적인 사양관리 체계의 구축을 통하여 30년 전에 비하여 생산성의 비약적 인 발전을 이루었다 (Henry and Rothwell, 1995 (Gaskins et al, 2002). 항 생제는 육계 산업에서 (1) 질병 치료의 목적, (2) 질병 예방 의 목적 그리고 (3) 사료효율 개선의 목적으로 사용한다.…”

Private investment in livestock breeding with implications for public research policy

“…All of Perdue's breeding stock is used in-house within the vertically integrated firm. Two of the companies, Cobb-Vantress and Avian Farms, are owned by vertically integrated poultry meat companies (Tyson Foods and Charoen Pokphand, respectively) but are operated independently and also sell stock to other producers (Henry & Rothwell, 1995). Peterson Farms develops stock for its integrated broiler parent firm, Crystal Lake, but most of Peterson Farms breeding stock is sold externally.…”