发酵中草药对羔羊生长性能、瘤胃发酵参数及营养物质表观消化率的影响

Effects of fermented Chinese herbal medicines on lamb growth performance, rumen fermentation parameters and apparent digestibility of nutrients

    摘要
  • 摘要:
    目的 本试验旨在探讨发酵复方中草药对羔羊的生长性能、瘤胃发酵参数和营养物质表观消化率的影响。
    方法 选择15日龄、初生体重相近（3.25 ± 0.50）kg、体况良好的湖羊羔羊120只（每组3个重复，每个重复10只羊，公母各半），随机分为4组，分别饲喂羔羊开食料（对照组）、羔羊开食料+0.2%发酵中草药（0.2%组）、0.4%发酵中草药（0.4%组）和0.6%发酵中草药（0.6%组）。试验期为45 d。
    结果 （1）添加不同水平的发酵中草药对各处理组羔羊平均日增重影响差异不显著（P>0.05）；相较于对照组，0.2%组、0.6%组试验末重显著提高（P<0.05）。（2）各处理组之间羔羊瘤胃液中乙酸、丙酸、丁酸、异戊酸、戊酸、乳酸、总挥发性脂肪酸、瘤胃pH、NH3-N浓度差异不显著（P>0.05）。相较于对照组，0.6%组羔羊瘤胃液中异丁酸、乙酸/丙酸含量显著提升（P<0.05）。（3）相较于对照组，0.6%组羔羊粗脂肪表观消化率显著提升（P<0.05）；相较于0.4%组，对照组和0.6%组羔羊中性洗涤纤维表观消化率极显著降低（P<0.01），0.2%组显著降低（P<0.05）；对照组、0.4%组羔羊总能表观消化率相较于0.2%组显著提升（P<0.05）；对照组、0.2%组羔羊Ca、P表观消化率均显著低于0.4%组（P<0.05）。
    结论 在本试验条件下羊羔羊日粮中添加发酵中草药，有助于提高羔羊生长性能，提高营养物质表观消化率，提高饲料消化利用率，补充动物机体营养，提升瘤胃发育水平。

     

    Abstract:
    Objective This study aimed to investigate the effects of fermented compound Chinese herbal medicines on growth performance, rumen fermentation parameters, and apparent nutrient digestibility in Hu lambs.
    Methods A total of 120 Hu lambs, aged 15 days with similar birth weight (3.25 ± 0.50) kg and good body condition, were randomly divided into four groups (each group had three replicates of 10 lambs, half male and half female), and fed respectively with lamb starter (control group), starter + 0.2% fermented Chinese herbal medicine (0.2% group), starter + 0.4% fermented herbal medicine (0.4% group), and starter + 0.6% fermented herbal medicine (0.6% group) for 45 days.
    Results (1) Different levels of fermented herbal medicine did not significantly affect average daily gain (P>0.05); however, compared with the control group, the final body weight of lambs in the 0.2% and 0.6% groups was significantly increased (P<0.05). (2) No significant differences were observed among groups in ruminal concentrations of acetic acid, propionic acid, butyric acid, isovaleric acid, valeric acid, lactic acid, total volatile fatty acids, rumen pH, or ammonia nitrogen (NH3-N) (P>0.05); compared with the control group, the 0.6% group showed significantly higher isobutyric acid content and acetate-to-propionate ratio (P<0.05). (3) The apparent digestibility of ether extract was significantly higher in the 0.6% group than in the control group (P<0.05); compared with the 0.4% group, the apparent digestibility of neutral detergent fiber was significantly lower in the control group (P<0.01) and the 0.6% group (P<0.01), and in the 0.2% group (P<0.05); the apparent digestibility of gross energy in the control and 0.4% groups was significantly higher than that in the 0.2% group (P<0.05); the apparent digestibility of calcium (Ca) and phosphorus (P) in the control and 0.2% groups was significantly lower than that in the 0.4% group (P<0.05).
    Conclusion In conclusion, under the conditions of this experiment, adding fermented Chinese herbal medicines to the diet of Hu lambs improved growth performance and apparent nutrient digestibility, enhanced feed utilization efficiency, supplemented animal nutrition, and promoted rumen development.

     

    • HTML全文
    • 参考文献(36)
    • 相关文章
    • 施引文献
  • 资源附件(0)

/

返回文章
返回