Effects of different protein and lipid levels on the growth performance and intestinal microflora of loach (Paramisgurnus dabryanus)
The aim of this study was to examine the effects of dietary protein and lipid levels on the growth performance and homeostasis of the intestinal flora in Paramisgurnus dabryanus. An 8-week 3 × 3 two-factorial experiment was conducted to investigate the interaction between dietary crude protein (CP:...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-06-01
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| Series: | Animal Nutrition |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405654523000264 |
| _version_ | 1827926507281973248 |
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| author | Zirui Wang Shuyao Li Qiubai Zhou Jinhua Zhang Yongan Li Youjie Li Zhiwen Yuan Guanghua Huang |
| author_facet | Zirui Wang Shuyao Li Qiubai Zhou Jinhua Zhang Yongan Li Youjie Li Zhiwen Yuan Guanghua Huang |
| author_sort | Zirui Wang |
| collection | DOAJ |
| description | The aim of this study was to examine the effects of dietary protein and lipid levels on the growth performance and homeostasis of the intestinal flora in Paramisgurnus dabryanus. An 8-week 3 × 3 two-factorial experiment was conducted to investigate the interaction between dietary crude protein (CP: 30%, 35%, 40%) and ether extract (EE: 6%, 10%, 14%) on the growth rate and the intestinal microflora of P. dabryanus. A total of 2,160 fish (5.19 ± 0.01 g) were randomly allotted to 36 aquariums each with 60 fish. Fish were fed the experimental diet twice daily. Results revealed that weight gain rate (WGR), specific growth rate (SGR), protein efficiency ratio and net protein utilization significantly increased when increasing protein levels from 30% to 40% (P < 0.05). Both WGR and SGR enhanced first but reduced thereafter with maximum value at 10% lipid level as dietary lipid increased from 6% to 14% (P < 0.05). Significant interactions between protein and lipid were found with feed conversion rate, lipid efficiency ratio and net lipid utilization (P < 0.05). At the phylum level, Proteobacteria and Actinobacteria were the dominant bacteria; at the genus level, Burkholderia-Caballeronia-Paraburkholderia was the dominant bacteria. Fish fed the diet containing 10% lipid had a higher abundance of Proteobacteria and unclassified_f_Eenterobacteriaceae than those fed the 14% lipid diet, and a higher abundance of Rhodobacter than those fed the 6% lipid diet (P < 0.05). Analysis of the predicted functions showed that metabolism in the intestine of fish in the CP40EE10 group was more active than that in CP30EE14 group. Polynomial regression analysis found that a diet containing 40.87% protein and 9.88% lipid can be considered optimal for P. dabryanus. |
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| institution | Directory Open Access Journal |
| issn | 2405-6545 |
| language | English |
| last_indexed | 2024-03-13T05:39:42Z |
| publishDate | 2023-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Animal Nutrition |
| spelling | doaj.art-92b5d2188ead4e0f9ce6b939db24b52a2023-06-14T04:33:44ZengKeAi Communications Co., Ltd.Animal Nutrition2405-65452023-06-0113229239Effects of different protein and lipid levels on the growth performance and intestinal microflora of loach (Paramisgurnus dabryanus)Zirui Wang0Shuyao Li1Qiubai Zhou2Jinhua Zhang3Yongan Li4Youjie Li5Zhiwen Yuan6Guanghua Huang7College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; Key Laboratory of Featured Hydrobios Nutritional Physiology and Healthy Breeding, Nanchang, 330045, ChinaCollege of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; Key Laboratory of Featured Hydrobios Nutritional Physiology and Healthy Breeding, Nanchang, 330045, ChinaCollege of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; Key Laboratory of Featured Hydrobios Nutritional Physiology and Healthy Breeding, Nanchang, 330045, China; Corresponding author.College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; Key Laboratory of Featured Hydrobios Nutritional Physiology and Healthy Breeding, Nanchang, 330045, ChinaCollege of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; Key Laboratory of Featured Hydrobios Nutritional Physiology and Healthy Breeding, Nanchang, 330045, ChinaCollege of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; Key Laboratory of Featured Hydrobios Nutritional Physiology and Healthy Breeding, Nanchang, 330045, ChinaCollege of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; Key Laboratory of Featured Hydrobios Nutritional Physiology and Healthy Breeding, Nanchang, 330045, ChinaCollege of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China; Key Laboratory of Featured Hydrobios Nutritional Physiology and Healthy Breeding, Nanchang, 330045, ChinaThe aim of this study was to examine the effects of dietary protein and lipid levels on the growth performance and homeostasis of the intestinal flora in Paramisgurnus dabryanus. An 8-week 3 × 3 two-factorial experiment was conducted to investigate the interaction between dietary crude protein (CP: 30%, 35%, 40%) and ether extract (EE: 6%, 10%, 14%) on the growth rate and the intestinal microflora of P. dabryanus. A total of 2,160 fish (5.19 ± 0.01 g) were randomly allotted to 36 aquariums each with 60 fish. Fish were fed the experimental diet twice daily. Results revealed that weight gain rate (WGR), specific growth rate (SGR), protein efficiency ratio and net protein utilization significantly increased when increasing protein levels from 30% to 40% (P < 0.05). Both WGR and SGR enhanced first but reduced thereafter with maximum value at 10% lipid level as dietary lipid increased from 6% to 14% (P < 0.05). Significant interactions between protein and lipid were found with feed conversion rate, lipid efficiency ratio and net lipid utilization (P < 0.05). At the phylum level, Proteobacteria and Actinobacteria were the dominant bacteria; at the genus level, Burkholderia-Caballeronia-Paraburkholderia was the dominant bacteria. Fish fed the diet containing 10% lipid had a higher abundance of Proteobacteria and unclassified_f_Eenterobacteriaceae than those fed the 14% lipid diet, and a higher abundance of Rhodobacter than those fed the 6% lipid diet (P < 0.05). Analysis of the predicted functions showed that metabolism in the intestine of fish in the CP40EE10 group was more active than that in CP30EE14 group. Polynomial regression analysis found that a diet containing 40.87% protein and 9.88% lipid can be considered optimal for P. dabryanus.http://www.sciencedirect.com/science/article/pii/S2405654523000264Paramisgurnus dabryanusProtein/lipid ratioGrowth performanceFeed utilizationIntestinal microflora |
| spellingShingle | Zirui Wang Shuyao Li Qiubai Zhou Jinhua Zhang Yongan Li Youjie Li Zhiwen Yuan Guanghua Huang Effects of different protein and lipid levels on the growth performance and intestinal microflora of loach (Paramisgurnus dabryanus) Animal Nutrition Paramisgurnus dabryanus Protein/lipid ratio Growth performance Feed utilization Intestinal microflora |
| title | Effects of different protein and lipid levels on the growth performance and intestinal microflora of loach (Paramisgurnus dabryanus) |
| title_full | Effects of different protein and lipid levels on the growth performance and intestinal microflora of loach (Paramisgurnus dabryanus) |
| title_fullStr | Effects of different protein and lipid levels on the growth performance and intestinal microflora of loach (Paramisgurnus dabryanus) |
| title_full_unstemmed | Effects of different protein and lipid levels on the growth performance and intestinal microflora of loach (Paramisgurnus dabryanus) |
| title_short | Effects of different protein and lipid levels on the growth performance and intestinal microflora of loach (Paramisgurnus dabryanus) |
| title_sort | effects of different protein and lipid levels on the growth performance and intestinal microflora of loach paramisgurnus dabryanus |
| topic | Paramisgurnus dabryanus Protein/lipid ratio Growth performance Feed utilization Intestinal microflora |
| url | http://www.sciencedirect.com/science/article/pii/S2405654523000264 |
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