Dietary effects of commercial multi-enzymes on production performance, coloric efficiency, fecal scores, and carcass quality of boiler chickens
Date
2019
Pagination
67 leaves : illustrations (some color) ; 28 cm
Adviser
Precious Jewel D. Dela Cruz
Abstract
In order to determine the effects of two commercially available multi-enzymes on the production performance, caloric efficiency, fecal scores, and carcass quality, 432 straight-run day-old Cobb 500 chicks were randomly divided into 6 treatments consisting of 6 replicates each and 12 birds per replicate. Birds were blocked by initial weight and were randomly allotted to 1 of 6 experimental treatments using a randomized complete block design (RCBD). The 6 dietary treatments are Tl: corn diet (Positive Control 1); T2: corn-wheat diet (Positive Control 2); T3: T1 with reduced ME, AA, Ca, and P (Negative Control 1); T4: T2 with reduced ME, AA, Ca, and P (Negative Control 2); T5: T3 + 750 g/ton of multi-enzyme A; and T6: T4 + 400 g/ton multi-enzyme B. Excreta quality score of each treatment was assessed visually on day 7, 14, 21, and 28. At day 34, two chickens were randomly selected from each replicate to examine the broilers' carcass characteristics. Results showed that both multi-enzyme A and multi-enzyme B have no effect on the production performance and fecal scores of broiler chickens (p-value=0.001). However, there was a significant difference in the caloric efficiency (p-value=0.002). The dietary treatment with multi-enzyme A (T5) yielded the highest caloric efficiency among all six treatments. Significant differences were also observed on the carcass quality of the birds (p-value=0.0005). Abdominal fat weight was highest on the broiler chickens fed with multi-enzyme B supplementation while the birds fed with diet containing multi-enzyme A produced the highest gizzard yield. Under the conditions for which this study was conducted, it is concluded that supplementation of multi-enzymes do not improve broiler's growth performance, fecal scores, caloric efficiency, carcass quality, and economic viability.
Language
English
LC Subject
Capstone
Location
University of the Philippines Rural High School
Recommended Citation
Alleda, Particia Bianca A.; Mendoza, Ann Jullian D.; and Rosal, Angel Kris A., "Dietary effects of commercial multi-enzymes on production performance, coloric efficiency, fecal scores, and carcass quality of boiler chickens" (2019). Capstones. 54.
https://www.ukdr.uplb.edu.ph/etd-capstone/54
Document Type
Capstone