Influence of dietary vitamin e and selenium to the laying performance, egg quality and carcass characteristics of Japanese quails (Coturnix japonica) under heat stress (34 °C) / by Karl Louisse D. Obispo.
Material type:
TextLanguage: English Publication details: Indang, Cavite : Cavite State University- Main Campus, 2018.Description: xx ,104 pages : illustrations ; 28 cmContent type: - text
- unmediated
- volume
- 636.59 Ob3 2018
- College of Agriculture, Food, Environment and Natural Resources (CAFENR), Department of Animal Science
| Item type | Current library | Collection | Call number | Materials specified | Status | Notes | Date due | Barcode |
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Theses / Manuscripts
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Ladislao N. Diwa Memorial Library Theses Section | Non-fiction | 636.59 Ob3 2018 (Browse shelf(Opens below)) | Room use only | T-7603 | 00076591 |
Thesis (Bachelor of Science in Agriculture Major in Animal Science) Cavite State University.
Includes bibliographical references.
College of Agriculture, Food, Environment and Natural Resources (CAFENR), Department of Animal Science
OBISPO, KARL LOUISSE, D. Influence of Dietary Vitamin E and Selenium to the Laying Performance, Egg Quality and Carcass Characteristics of Japanese Quails (Coturnix coturnix japonica) under Heat Stress (34°C). Undergraduate Thesis. Bachelor of Science in Agriculture (Major in Animal Science). Cavite State University, Indang, Cavite. June 2018. Adviser: Dr. Irvin dL. Matel.
This study was carried out to investigate the influence of dietary vitamin E (DL-a-tocopherol acetate), selenium (L-Selenomethionine) and a combination of the two, on the laying performance, egg quality and carcass characteristics of Japanese quails reared either in thermoneutral (28.39 ± 0.68 °C) and heat stress (34.29 ± 0.16 °C) conditions. Two hundred forty (240) Japanese quail pullets (30 birds/treatment combinations) were raised for a period of 6 weeks and were randomly assigned to 8 dietary treatment combinations following a 2 x 2 factorial design. The treatments were: I- Control (no mineral-vitamin supplementation); II- Selenium (0.30 mg/kg of basal ration); III- Vitamin E (250 mg/kg of basal ration); IV- Vitamin E and Selenium (250 mg/kg of basal ration and 0.30 mg/kg of basal ration); V- Control (no mineral-vitamin supplementation); VI- Selenium (0.30 mg/kg of basal ration); VII- Vitamin E (250 mg/kg of basal ration); and VIII- Vitamin E and Selenium (250 mg/kg of basal ration and 0.30 mg/kg of basal ration). At 75 percent laying efficiency, treatment 1, 2, 3, and 4 were kept under thermoneutral conditions, whereas treatment 5, 6, 7 and 8 were kept under heat conditions for a period of 6 weeks. The interaction of environmental temperature and supplementation of selenium, vitamin E and their combinations significantly (P < 0.05) affected the body weight gain, feed consumption, mortality rate, yolk weight and dressing percentage. Heat stress alone, on the other hand impairs the feed consumption (P < 0.00), feed conversion ratio (P < 0.00), egg production (P < 0.00), egg yolk color (P < 0.01) and dressing percentage (P < 0.00).
Furthermore, selenium, vitamin E and their combinations significantly (P < 0.05) affected the body weight gain, mortality rate, yolk color, shell percentage, albumen weight and dressing percentage. Supplementation of selenium, vitamin E and their combinations do not significantly (P > 0.05) affect the egg production, egg weight, shape index, shell thickness, shell percentage, albumen weight and giblets percentage of quail layers under heat stress
Submitted to the University Library August 15, 2018 T-7603