碩士 / 國立宜蘭大學 / 生物技術與動物科學系動物科學碩士班 / 101 / Feed cost generally accounts over 70% of the total cost in intensive animal husbandry which is one of the major factors to lead the industrial development. The continuous price rising in fishmeal is mainly due to overfishing, shortage of fishing harvest and the demand from human population growth. There is an intense pressure to find an alternative protein sourcesto replace fishmeal. The maggot meal (magmeal) with its high protein level appear to be an potential substitution of fishmeal. The present study aims to develop a maggot production system by using magmeal to replace fishmeal in feeding broiler. The growth performance and blood characteristics were measured to evaluate the effects of substitution dietary. Experiment 1 established the feeding and breeding system for housefly and flesh fly via the larva recipe combining yeast powder, milk powder, agar powder and distilled water while the adult recipe with sugar and milk powder. Themagmeal was made from the maggot being dried at 45℃and crushed. For the operation convenience of fecal feeding in experiment 2, house fly magmeal was chosen for substitution of fishmeal to feed broiler although flesh fly magmeal with higher protein. The effects of dietarysubstitution was investigated from the growth performance and blood characteristics of the tested birds. Experiment 2 including five experimental diets whichwere formulatedfrom ingredients with 0, 25, 50, 75 and 100% ofmagmeal substitution for fish meal with duplicates at 8 birds per cage, a total of 80 broilers. The results showed no significant difference in body weight gain and feed intake for broilers at three weeks of age. No statistically significant differences of body weight gain between the treatments were found at five weeks of age. The feed intake in 75% substitution group was significantly higher than that of control group (P < 0.05). There were no significant differences in feed efficiency between 50% substitution group and control group. No significant differences in blood enzymes and red blood cell characteristics for all treatments. From this study it can be seen that magmeal is capable of replacing 50% fishmeal in the diet for the broilers withoutadversely affecting their growth performance and blood characteristics. Therefore, a low cost production system for maggot farming will be of great help to poultry industry in the future.
| Identifer | oai:union.ndltd.org:TW/101NIU00289002 |
| Date | January 2013 |
| Creators | Liao, Wang-Ru, 廖婉汝 |
| Contributors | Chen, Yue-Wen, Huang, Shih-Che, 陳裕文, 黃士哲 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 52 |
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