|
Descripción
|
|
|---|---|
| The effects of the inclusion of additional fiber in the diet on growth performance and digestive traits were studied in broilers from 1 to 42 d of age. The control diet was based on rice and contained 3,120 kcal AMEn/kg, 1.12% digestible Lys, and 1.5% crude fiber content. The 2 experimental diets included 3% of either oat hulls (OH) or sugar beet pulp (SBP). Growth performance was measured from 1 to 42 d, total tract apparent retention (TTAR) of nutrients were determined at 32 d, and the relative weight (RW; g/kg BW) of the GIT and the gizzard was measured at 42 d of age. Cumulatively, broilers fed OH had higher (P ¿ 0.001) ADG and better (P ¿ 0.01) FCR than broilers fed SBP or the control diet. From 1 to 10 d of age, OH inclusion improved (P ¿ 0.01) ADG (19.5 vs. 16.8 g/d) and FCR (1.215 vs. 1.333) as compared with the control diet. Also, SBP improved FCR in this period but the effects disappeared with age. In fact, from 25 to 42 d of age, SBP inclusion reduced (P ¿ 0.05) feed intake with respect to the control diet and feed intake (P ¿ 0.05) and BWG (P ¿ 0.001) with respect to the OH diet. The RW of the GIT was higher (P ¿ 0.05) with the SBP than with the control diet with the OH diet being intermediate. Also, the RW of the gizzard increased (P ¿ 0.001) with fiber inclusion and the effects were more pronounced (P ¿ 0.05) with OH than with SBP. Fiber inclusion increased (P ¿ 0.01) TTAR of all nutrients and AMEn of the diet. The improvement in TTAR observed for DM was more pronounced (P ¿ 0.01) for OH than for SBP. We conclude that OH inclusion improves growth performance at all ages in broilers fed low fiber diets. Also, SBP inclusion improves growth performance from 1 to 10 d of age but not thereafter. The TTAR of nutrients are improved by fiber inclusion and the benefits are more pronounced with OH than with SBP. | |
|
Internacional
|
Si |
|
Nombre congreso
|
99th Poultry Science Association Annual Meeting |
|
Tipo de participación
|
960 |
|
Lugar del congreso
|
Denver |
|
Revisores
|
No |
|
ISBN o ISSN
|
0-8134-2929-3 |
|
DOI
|
|
|
Fecha inicio congreso
|
11/07/2010 |
|
Fecha fin congreso
|
15/07/2010 |
|
Desde la página
|
495 |
|
Hasta la página
|
495 |
|
Título de las actas
|
Poultry Science, 89 (1): 495 |