Effects of Adding Laurel (Laurus nobilis) Essential Oil to the Diet of Tilapia Fish on Growth and Intestinal Histology
The effects of adding laurel oil to the experimental diet on growth performance, biochemical compositions of fish and feeds, sand liver and intestine histology in Nile tilapia (Oreochromis niloticus) juveniles were evaluated. 180 fish (12±0.02 g) were used in the study. They were randomly placed in...
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Istanbul University Press
2022-10-01
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| Series: | Aquatic Sciences and Engineering |
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| Online Access: | https://cdn.istanbul.edu.tr/file/JTA6CLJ8T5/401A2E254CAB415E9832530806994150 |
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| author | Metin Yazıcı Yavuz Mazlum Mehmet Naz Çiğdem Ürkü Atasanov Musa Türkmen Tülay Akaylı |
| author_facet | Metin Yazıcı Yavuz Mazlum Mehmet Naz Çiğdem Ürkü Atasanov Musa Türkmen Tülay Akaylı |
| author_sort | Metin Yazıcı |
| collection | DOAJ |
| description | The effects of adding laurel oil to the experimental diet on growth performance, biochemical compositions of fish and feeds, sand liver and intestine histology in Nile tilapia (Oreochromis niloticus) juveniles were evaluated. 180 fish (12±0.02 g) were used in the study. They were randomly placed in 12 tanks with a volume of 500 liters, with 15 fish per tank. The commercial laurel oil was added to the diets at 0, 0.3, 0.6, and 1.2%. The fish were fed with experimental diets twice a day as apparent satiation for 60 days. In the current study, weight gain (WG), feed conversion ratio (FCR), specific growth rate (SGR) and survival rates (SR) were statistically similar (p>0.05). While no difference was observed between protein and ash values in the biochemical analysis of fish, lipid values were found to be lower in the 0.3% and 0.6 supplemented groups compared to the control and 1.2% supplemented groups. In addition, there was no statistical difference in protein, lipid, and ash values in the biochemical composition of the feeds. In the study, essential oil components of Laurus nobilis oil such as Linalool, Elemene, Trans-Caryophyllene, Cis-α-Bisabolene, Α-Terpinyl Acetate, Methyleugenol, β-Eudesmol were determined in low levels. The addition of 0.3% laurel oil to the diet did not cause histopathological findings, and it was found to improve liver and intestinal tissues. In conclusion, it is suggested that 0.3% laurel oil addition can be used as a feed additive in tilapia culture, especially considering the data obtained from growth and histological analyzes. Further studies are deserved need to examine the effects of laurel oil on immunity and resistance to various stress factors in other fish. |
| format | Article |
| id | doaj-art-ffac90a540b048f58db50c701c5f0085 |
| institution | DOAJ |
| issn | 2602-473X |
| language | English |
| publishDate | 2022-10-01 |
| publisher | Istanbul University Press |
| record_format | Article |
| series | Aquatic Sciences and Engineering |
| spelling | doaj-art-ffac90a540b048f58db50c701c5f00852025-08-20T03:09:30ZengIstanbul University PressAquatic Sciences and Engineering2602-473X2022-10-0137419520410.26650/ASE20221101489123456Effects of Adding Laurel (Laurus nobilis) Essential Oil to the Diet of Tilapia Fish on Growth and Intestinal HistologyMetin Yazıcı0https://orcid.org/0000-0002-7011-886XYavuz Mazlum1https://orcid.org/0000-0002-9547-0966Mehmet Naz2https://orcid.org/0000-0002-5129-8498Çiğdem Ürkü Atasanov3https://orcid.org/0000-0003-0381-9321Musa Türkmen4https://orcid.org/0000-0001-9914-9523Tülay Akaylı5https://orcid.org/0000-0003-2375-2224İskenderun Teknik Üniversitesi, Hatay, Turkiyeİskenderun Teknik Üniversitesi, Hatay, Turkiyeİskenderun Teknik Üniversitesi, Hatay, Turkiyeİstanbul Üniversitesi, İstanbul, TürkiyeHatay Mustafa Kemal Üniversitesi, Hatay, Turkiyeİstanbul Üniversitesi, İstanbul, TürkiyeThe effects of adding laurel oil to the experimental diet on growth performance, biochemical compositions of fish and feeds, sand liver and intestine histology in Nile tilapia (Oreochromis niloticus) juveniles were evaluated. 180 fish (12±0.02 g) were used in the study. They were randomly placed in 12 tanks with a volume of 500 liters, with 15 fish per tank. The commercial laurel oil was added to the diets at 0, 0.3, 0.6, and 1.2%. The fish were fed with experimental diets twice a day as apparent satiation for 60 days. In the current study, weight gain (WG), feed conversion ratio (FCR), specific growth rate (SGR) and survival rates (SR) were statistically similar (p>0.05). While no difference was observed between protein and ash values in the biochemical analysis of fish, lipid values were found to be lower in the 0.3% and 0.6 supplemented groups compared to the control and 1.2% supplemented groups. In addition, there was no statistical difference in protein, lipid, and ash values in the biochemical composition of the feeds. In the study, essential oil components of Laurus nobilis oil such as Linalool, Elemene, Trans-Caryophyllene, Cis-α-Bisabolene, Α-Terpinyl Acetate, Methyleugenol, β-Eudesmol were determined in low levels. The addition of 0.3% laurel oil to the diet did not cause histopathological findings, and it was found to improve liver and intestinal tissues. In conclusion, it is suggested that 0.3% laurel oil addition can be used as a feed additive in tilapia culture, especially considering the data obtained from growth and histological analyzes. Further studies are deserved need to examine the effects of laurel oil on immunity and resistance to various stress factors in other fish.https://cdn.istanbul.edu.tr/file/JTA6CLJ8T5/401A2E254CAB415E9832530806994150laurel oiloreochromis niloticuslaurus nobilisgrowth parameterbiochemical composition |
| spellingShingle | Metin Yazıcı Yavuz Mazlum Mehmet Naz Çiğdem Ürkü Atasanov Musa Türkmen Tülay Akaylı Effects of Adding Laurel (Laurus nobilis) Essential Oil to the Diet of Tilapia Fish on Growth and Intestinal Histology Aquatic Sciences and Engineering laurel oil oreochromis niloticus laurus nobilis growth parameter biochemical composition |
| title | Effects of Adding Laurel (Laurus nobilis) Essential Oil to the Diet of Tilapia Fish on Growth and Intestinal Histology |
| title_full | Effects of Adding Laurel (Laurus nobilis) Essential Oil to the Diet of Tilapia Fish on Growth and Intestinal Histology |
| title_fullStr | Effects of Adding Laurel (Laurus nobilis) Essential Oil to the Diet of Tilapia Fish on Growth and Intestinal Histology |
| title_full_unstemmed | Effects of Adding Laurel (Laurus nobilis) Essential Oil to the Diet of Tilapia Fish on Growth and Intestinal Histology |
| title_short | Effects of Adding Laurel (Laurus nobilis) Essential Oil to the Diet of Tilapia Fish on Growth and Intestinal Histology |
| title_sort | effects of adding laurel laurus nobilis essential oil to the diet of tilapia fish on growth and intestinal histology |
| topic | laurel oil oreochromis niloticus laurus nobilis growth parameter biochemical composition |
| url | https://cdn.istanbul.edu.tr/file/JTA6CLJ8T5/401A2E254CAB415E9832530806994150 |
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