التفاصيل البيبلوغرافية
| العنوان: |
Thermal comfort temperature update for broiler chickens up to 21 days of age |
| المؤلفون: |
Cassuce, Déborah C., Tinôco, Ilda de F. F., Baêta, Fernando C., Zolnier, Sérgio, Cecon, Paulo R., Vieira, Maria de F. A. |
| المصدر: |
Engenharia Agrícola. February 2013 33(1) |
| بيانات النشر: |
Associação Brasileira de Engenharia Agrícola, 2013. |
| سنة النشر: |
2013 |
| مصطلحات موضوعية: |
thermal stress, aviculture, performance |
| الوصف: |
Due to changes in genetics and nutrition, as well as in acclimatization of broiler chickens to the Brazilian climate, temperature values currently accepted as optimal may be outdated. The objective of this research was to update the environment temperatures that characterize the thermal comfort for broilers chickens from one to 21 days of age, under Brazilian production conditions. This research was conducted with 600 COBB birds, which were distributed in five growth chambers maintained at different temperatures during the first three weeks of age. During the experimental period, temperature values were progressively reduced, consisting in five treatments: T2724/21, T30/27/24, T33/30/27, T36/33/30 and T39/36/33. It was observed that the birds maintained in the T30(27-24) treatment presented better performance compared to other environment conditions. Based on the obtained regression models, the environment temperature values that provide greater weighing gain for the broiler chicken growth in the initial period were 31.3, 25.5 and 21.8 ºC, respectively for the first, second and third week of age. |
| نوع الوثيقة: |
article |
| وصف الملف: |
text/html |
| اللغة: |
English |
| تدمد: |
0100-6916 |
| DOI: |
10.1590/S0100-69162013000100004 |
| URL الوصول: |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000100004 |
| Rights: |
info:eu-repo/semantics/openAccess |
| رقم الانضمام: |
edssci.S0100.69162013000100004 |
| قاعدة البيانات: |
SciELO |