Astudy of daytime behavior of caged pullets
| Autor: | Yueh-Hsuan Lee, 李岳弦 |
|---|---|
| Rok vydání: | 2006 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 94 The purpose of this study was to know the daytime behavior activity of caged pullet. Chickens studied were Red-feathered commercial breed (RF) and L2 selected strain of Taiwan Country Chicken (L2), and Single Comb White Leghorn (WL). Behaviors of caged pullets were observed at 30 and 50 weeks of age periods on laying and non-laying days as well as on the day of cease laying period. The observed data used were 16 daytime hours video data recorded from 0500 to 2100. The first was a study of sampling frequency, and its results was used to determine sampling frequency in further study of daytime behavior. Results suggested that for crouching, feeding, alert and preening with longer duration, 10 min. sampling interval may be appropriate. However, for drinking, head-shaking with very short duration need much shorter interval to improve reliability of measurement. Important results of main factors were as follows. (1) RF chickens had higher drinking frequency (P |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|