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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.1
- 수록면
- 1 - 9 (9page)
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Background: Due to the continuous demand for fish coupled with decline in capture fisheries, there is the need to increase aquaculture production to meet the demand. Aquaculture is faced with high cost of feeding since fish oil and fish meal are expensive. In view of this, there are calls to explore alternatives that are cheap and reliable. Objectives: This study on Oreochromis niloticus was conducted to evaluate the effects of replacing fish oil (FO) with palm oil (PO) at 0%, 25%, 50%, 75%, and 100% on muscle fatty acid and proximate composition as well as growthrelated enzyme activities and mRNA expression. Methods: Oreochromis niloticus were fed five experimental diets (33% crude protein and 10% crude lipid) for 8 weeks. Feed had variation in fish oil and palm oil contents. After the 8 weeks feeding trial, five fish were sampled from each tank (15 from each treatment) and euthanized using an excess dose of tricaine methane sulfonate (MS- 222 at 200 mg/L). Fatty acid and enzyme activities were analyzed using standard protocols. Also, RT-qPCR was used to quantify the expression levels of selected growth-related genes. Results: Fish fed 25% PO recorded the least muscle protein content and was significantly lower than the group fed 100% PO. Paired box protein 7 (Pax-7) enzyme activity was significantly higher in the group fed 50% PO compared to the groups fed 25% PO and 100% PO, while caplain-3 (Capn-3) was significantly lower in the group fed 0% PO compared to all other groups. There was a significant difference among treatments with respect to mRNA expression of Pax-7 and Capn-3. Group fed 25% PO had significantly lower mRNA expression of Pax-7, while the group fed 75% PO recorded significantly higher mRNA expression of Capn-3 compared to groups fed 0% PO, 25% PO, and 100% PO. Pearson’s correlation analysis revealed that Igf-I and Igf-II mRNA expression have significant correlation with n-3 polyunsaturated fatty acids content in muscle. Conclusion: The results suggest muscle protein content could be modified if FO is replaced with PO. Also, mRNA expression of Pax-7 and Capn-3 is affected by replacing FO with PO.
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참고문헌 (23)
참고문헌 신청
American Public Health Association (APHA) / 1998 / Standard methods for the examination of water and wastewater
Apraku A / 2017 / Evaluation of blended virgin coconut oil and fish oil on growth performance and resistance to Streptococcus iniae challenge of Nile tilapia(Oreochromis niloticus) / Egypt J Basic Appl Sci 4(3):175~184
Asaduzzaman M / 2017 / Biochemical composition and growth performances of Malaysian Mahseer Tor tambroides larvae fed with live and formulated feeds in indoor nursery rearing system / Aquac Nutr 4:156~163
Asaduzzaman M / 2011 / Multiple ciselements in the 5′-flanking region of embryonic/larval fast-type of the myosin heavy chain gene, MYHM743-2, of torafugu function in the transcriptional regulation of its expression / Gene 489:41~54
Asdari R / 2011 / Effects of different dietary lipid sources in the diet for Pangasius nasutus (Bleeker, 1863) juveniles on growth performance, feed efficiency, body indices and muscle and liver fatty acid compositions / Aquac Nutr 17:e883~e891
Apraku A / 2017 / Evaluation of blended virgin coconut oil and fish oil on growth performance and resistance to Streptococcus iniae challenge of Nile tilapia(Oreochromis niloticus) / Egypt J Basic Appl Sci 4(3):175~184
Asaduzzaman M / 2017 / Biochemical composition and growth performances of Malaysian Mahseer Tor tambroides larvae fed with live and formulated feeds in indoor nursery rearing system / Aquac Nutr 4:156~163
Asaduzzaman M / 2011 / Multiple ciselements in the 5′-flanking region of embryonic/larval fast-type of the myosin heavy chain gene, MYHM743-2, of torafugu function in the transcriptional regulation of its expression / Gene 489:41~54
Asdari R / 2011 / Effects of different dietary lipid sources in the diet for Pangasius nasutus (Bleeker, 1863) juveniles on growth performance, feed efficiency, body indices and muscle and liver fatty acid compositions / Aquac Nutr 17:e883~e891
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