The Effect Of Environment Control On Poultry Performance

The difference between china poultry industry and international standard is becoming smaller and smaller in breeder,disease control,nutrition and technique after rapid development in china ,but the difference is still big on poultry house environmental control,The effection of house environment improvement on chick health and performance is overlooked . Poultry house environmental control is becoming more and more important in poultry industry. The good environment is the prerequisite for chick health, the important measure to improve flock performance, the guarantee to produce high quality product.The content of house environmental control mainly included temperature humidity pernicious gases, and dust etc. The environmental demand is different in different chick growing period and season .A complete set of principles and important paramrters calculated methods in design and reform is put forwarded according to environmental control need, and Three ventilation system is put forwarded in this essay suitable to different season and growing period. Through the analysis of environmental factor target inside house in different ventilation system The best environmental factor can be maintained by adopt vertical ventilation sestem with cooling pad in summer, horizontal ventilation system with minimum ventilation in winter,and mixed ventilation sestem that horizontal and vertical ventilation should be converted automatically in. spring or autumn.The maximum vertical ventilation system with cooling pad should be adopted in case of heat stress in suumer, The area of cooling pad and quantity of ventilation should be calculated according to evaporate and wind-chill principle. The temperature inside poutry house can be decrease 8℃-10℃ in hot and dry day. The minimum air volume should be maintained in the condition of the temperature lower than the set in winter or brooding period (0-3weeks), The temperature difference inside house can be decreased from 6.1℃ to 1.9℃, Average ammonia density decreased form 21.4ppm to 9.6ppm. The horizontal and vertical ventilation should be converted automatically with the change of temperature in day or night in spring and autumn. Computer will control conversion and environmental target inside house after manual set up. Through the analysis of environmental target inside house before and after reformation ,every environmental target is better than before.According to the research of this essay, Chick house environmental control not only improved environmental factor but also bring forth the flock disease reduction in a big degree,decreased poultry mortality rate and improved chick performance .It decreased parent breeder mortality rate 2.8% in growing period .The flock medicine expense decreased more than 64.2%.One hen housed grand parent female breeder produced 5.1 parent breeder more than before .One hen housed parent female breeder produced 14.1 broiler more than before. Broiler feed conversion ratio (FCR) decreased 0.2. It makes us know the importance of the environmental control. Through the production performance analysis of broiler breeder ang broiler chick before and after used environment control house , the flock production performance is obvious increased.In analysis of production value and profit situation, bringing big economic value for the enterprise.