不同比例牛角瓜与皇竹草混合青贮品质研究

doi:10.16431/j.cnki.1671-7236.2023.08.004

摘要/Abstract

摘要： 【目的】探讨不同比例牛角瓜和皇竹草混合青贮的品质,为调制高质量的混合青贮饲料和开发新型饲料资源提供理论依据。【方法】将牛角瓜和皇竹草按照1∶0、2∶1、1∶1、1∶2、0∶1(分别对应1C0P、2C1P、1C1P、1C2P、0C1P组)比例混合调制青贮饲料,青贮60 d后测定混合青贮饲料的感官评分、营养成分、发酵品质和强心苷含量。【结果】1C1P、1C2P和0C1P组的感官评价均优于1C0P和2C1P组,达到了优良等级;不同混合比例对混合青贮饲料中的营养成分均存在显著影响(P＜0.05);1C1P组的乳酸含量显著高于其他各组(P＜0.05),未检出丁酸;1C0P、2C1P、1C1P、1C2P组强心苷含量比青贮前分别降低了4.87%、6.59%、11.49%和9.52%。【结论】混合青贮对改善牛角瓜青贮品质具有显著效果,同时对强心苷毒素有降解作用,当牛角瓜和皇竹草比例在1∶1时青贮效果最佳。

关键词: 牛角瓜; 皇竹草; 混合青贮; 营养成分; 发酵品质; 强心苷

Abstract: 【Objective】 This study was aimed to investigate the quality of Calotropis gigantea and Pennisetum sinese silage with different mixed ratio,and provide a theoretical basis for the preparation of high-quality mixed silage and the development of new feed resources.【Method】 The proportions of Calotropis gigantea and Pennisetum sinese were 1∶0,2∶1,1∶1,1∶2 and 0∶1 (1C0P,2C1P,1C1P,1C2P and 0C1P groups),respectively.After 60 days ensilaging,the sensory score,nutrient components,fermentation qualities and cardiac glycosides contents in different groups were measured to identify the optimum mixed ratio of two plants.【Result】 The sensory evaluation of 1C1P,1C2P and 0C1P groups were better than that of 1C0P and 2C1P groups,which could reach the excellent grade.Different mixed proportions had significant effects on the nutritional components of mixed silage (P＜0.05).The content of lactic acid in 1C1P group were significantly higher than those in other groups (P＜0.05),and the content of butyric acid was not detected.Compared with before ensilaging,the contents of cardiac glycosides in 1C0P,2C1P,1C1P and 1C2P groups decreased by 4.87%,6.59%,11.49% and 9.52%,respectively.【Conclusion】 The mixed silage showed a significant effect on improving the quality of Calotropis gigantea silage,and played a degrading effect role on the content of cardiac glycoside.The best silage effect was obtained when the ratio of Calotropis gigantea and Pennisetum sinese was 1∶1.

Key words: Calotropis gigantea; Pennisetum sinese; mixed silage; nutrient component; fermentation quality; cardiac glycoside

中图分类号:

S816.5⁺3

陈雅坤, 闫威明, 卜登攀, 赵连生, 许建初, 沈旖帆, 郑爱荣, 张建勇. 不同比例牛角瓜与皇竹草混合青贮品质研究[J]. 中国畜牧兽医, 2023, 50(8): 3065-3072.

CHEN Yakun, YAN Weiming, BU Dengpan, ZHAO Liansheng, XU Jianchu, SHEN Yifan, ZHENG Airong, ZHANG Jianyong. Study on Mixed Silage Quality of Calotropis gigantea and Pennisetum sinese with Different Proportions[J]. China Animal Husbandry and Veterinary Medicine, 2023, 50(8): 3065-3072.

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