Date
5-1999
Abstract
Two experiments were conducted to determine the effect of betaine as partial replacement of dl-methionine (DLM) and methionine hydroxy analogue (MHA) on the performance of broilers and layers. In experiment 1, forty-five (45) individually caged 24-week old pullets were randomly assigned to five treatments following a completely randomized design (CRD). RAch treatment was replicated 9 times with one pullet per replicate. In experiment 2, three hundred (300) day-old broiler chicks were randomly distributed to five dietary treatments following a completely randomized design_ Each treatment was replicated six timOes with 10 birds per replicate. In the layer experiment, pullets fed methionine supplemented diets had significantly higher (P<0.05) egg production rates than those fed diets without methionine supplementation. Egg production rates and egg weight of pullets fed diets with betaine as partial replacement of DLM or MHA tend to be higher than those fed diets with DLM or MHA alone. However, feed consumption, body weight gain, shell thickness and yolk color scores were similar among treatments. Pullets fed diets with betaine as partial replacement of DLM or MBA had higher income over feed cost (IOFC) than those fed diet with DLM or MHA alone.
In the broiler experiment, body weight, feed consumption, feed efficiency, mortality rate and dressing percentage of broilers fed diets with either forms of methionine or with partial replacement of the two methionine forms were not significantly different from those fed the control diets. Broilers fed diets with DLM, MHA, DLMB or MHAB tend to have higher income over chick and feed cost (IOFCC) than broilers fed the control diet.
Document Type
Master Thesis
Degree
Master of Science in Animal Science
College
Graduate School (GS)
Adviser/Committee Chair
Edwin S. Luis
Committee Member
Placido F. Alcantara, Florinia E. Merca
Language
English
Location
UPLB Main Library Special Collections Section (USCS)
Call Number
LG 995 1999 A5 B35
Recommended Citation
Bantoc, Celina Donna Querubin, "Betaine as partial replacement of DL-methionine or methionine hydroxy analogue in broiler and layer diets" (1999). Graduate Student's Output. 654.
https://www.ukdr.uplb.edu.ph/etd-grad/654