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To investigate the effects of a compound plant-derived additive (formulated with rosmarinic acid, carvacrol, and tea polyphenols at a ratio of 1:3:1) on growth performance, serum biochemical indicators, and rumen microbiota of weaned lambs, and to provide a theoretical basis for its application in dairy goat farming.
A total of 120 healthy 50-day-old weaned Saanen dairy goats were randomly divided into a control group and a treatment group, each with 60 lambs (10 replicates, 6 lambs per replicate). The control group was fed a basal diet, while the treatment group received the basal diet supplemented with 5.0 g/kg of the compound plant-derived additive. The trial lasted 90 days. Growth performance, serum biochemical parameters, and the relative abundance of rumen microbiota were measured.
Compared with the control group, the treatment group showed significant increases in final body weight (16.90%) and average daily gain (38.89%) (P<0.05), and a significant decrease in feed-to-gain ratio (26.48%) (P<0.05). Serum levels of triglyceride (TG), globulin (GLB), and total protein (TP) were significantly increased by 95.83%, 27.72%, and 16.09%, respectively (P<0.05). The relative abundances of Lachnospiraceae, Oscillospira, and other rumen bacteria were significantly reduced (P<0.05), while that of Succinivibrio was significantly increased by 132.87% (P<0.05).
The addition of the compound plant-derived additive to the basal diet of weaned lambs can significantly improve growth performance, serum biochemical indices, and rumen microbiota composition, indicating good potential for application in dairy goat production.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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