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- Title
大米干全酒精糟替代饲料中豆粕对吉富罗非鱼 生长性能, 体组成, 血清生化指标及肠道菌群的影响.
- Authors
向云曙; 蓝汉冰; 苏胜齐; 朱旺明
- Abstract
This experiment was conducted to study the effects of replacing soybean meal in feed with rice dried distillers grains with solubles (Rice DDGS) on the growth performance, body composition, serum biochemical indicators and gut microbiota of Farmed Tilapia. Six groups of experimental feeds were pre‐ pared by replacing 0, 20%, 40%, 60%, 80%, 100% soybean meal in the Tilapia feed with Rice DDGS in equal amounts at different levels (re‐ corded as DRDG0, DRDG20, DRDG40, DRDG60, DRDG80, DRDG100, respectively). Farmed Tila‐ pia juvenile with initial weight of (39.27±0.23) g were raised in the indoor circulating water aquaculture system for 8 weeks, and each treatment group had 3 replicates, 18 fish per replicate. The results showed that: ① with the increase of the proportion of soy‐ bean meal in Rice DDGS substitute feed, the weight gain rate, specific growth rate, and feed intake showed a trend of first increasing and then decreasing. There was no significant difference in weight gain rate and specific growth rate between the DRDG60 group and the control group (DRDG0) (P>0.05); there was no significant difference in VSI, HSI and CF among the groups (P>0.05). ② There was no signifi‐ cant difference in crude protein content of the whole-body among the groups (P>0.05); the crude ash content of the whole-body showed an upward trend, the moisture content showed a first decreasing and then increasing trend, and the crude lipid content showed a first increasing and then decreasing trend. ③ There was no significant difference in serum CAT, SOD, ALT, and AST activities among the groups (P>0.05); the activity of GSH-Px showed an upward trend; the content of MDA decreased gradually. ④ There was no significant difference in Ace, Chao, Shannon and Simpson index of gut microbiota among the groups (P>0.05); compared with DRDG0 group, the relative abundance of Proteobacteria in DRDG20, DRDG40, DRDG60 and DRDG80 groups decreased significantly (P<0.05). In conclusion, at the level of 60%, the replacement of soybean meal in feed with different levels of Rice DDGS can effectively promote the growth performance of Farmed Tilapia, and it can effectively improve antioxidant capacity and the structure of gut microbiota, while causing varying degrees of impact on whole-body composition.
- Publication
Feed Industry, 2023, Vol 44, Issue 24, p68
- ISSN
1001-991X
- Publication type
Article
- DOI
10.13302/j.cnki.fi.2023.24.011