نوع مقاله : سایر
نویسندگان
1 گروه علوم دامی، دانشگاه آزاد اسلامی، واحد ورامین- پیشوا، ورامین، ایران
2 مرکز تحقیقات کشاورزی و منابع طبیعی استان تهران، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Increasing the air velocity is an effective technique for birds cooling in humid climates. In the current study, air velocity in broiler houses and the relationship between indoor air velocity and performance parameters of Tonekabon broiler farms were evaluated. Data were obtained from broiler farms in summer time. A total of 27 farms were visited and interviewed. Broiler houses air velocity, temperature and relative humidity were measured and at the end of the rearing period, performance parameters were recorded. The results showed that air velocity varied between 0.7 and 1.8 m/s (average 1.3 m/s) and in all houses air velocity was lower than 2 m/s. There were negative and significant correlation between house air velocity with feed conversion ratio (P<0.001), temperature index (P<0.01), average feed intake (P<0.01) and mortality (P<0.05). It is concluded that proper ventilation system application and retrofitting current ventilation system will increase broiler farms performance and efficiency.
کلیدواژهها [English]