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      2. 金針菇菌糠營養價值評定及其對肉牛生產性能的影響
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        國家重點研發計劃項目(2016YFD0500507,2018YFD0501605);大北農青年學者提升專項(2017DBN003);中央高?;究蒲袠I務費專項(2662018PY079);武漢市農科院開放性課題項目


        Nutrients assessments of Flammulina velutipes substrate and its effects on production performance of beef cattle
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          摘要:

          為研究金針菇菌糠的飼用價值,對金針菇菌糠和常規粗飼料進行營養組分分析,并設計6種菌糠與常規粗飼料的組合,通過人工瘤胃法測定每組單獨飼喂以及與精料混合后的pH、NH3-N濃度和干物質降解率,篩選出最佳組合方式。選擇16頭健康狀況良好、年齡、體重相近的西門塔爾雜交公牛,隨機分為對照組和試驗組,每組8頭牛。對照組飼喂普通全混合日糧(total mixed rations,TMR),試驗組飼喂最佳組合方式的TMR日糧。預試期10 d,正試期80 d,試驗初始和結束時進行稱重和采血。測定最佳組合方式對肉牛日增重、血液生理指標和血漿生化指標的影響。結果顯示:菌糠的營養組分接近稻草和黃貯,其最佳飼喂組合為青貯(50%)+菌糠(30%)+酒糟(10%)+豆腐渣(10%),該組合的飼喂極顯著提高了肉牛日增重(P<0.01),降低了飼料成本,并且不會對血液生理指標和血漿生化指標造成不良影響。以上結果表明,金針菇菌糠可以作為粗飼料在肉牛養殖中使用。

          Abstract:

          In order to evaluate the feeding value of golden needle mushroom barn,the in vitro rumen fermentation was used to select the best feeding combination,which was further tested in the practice. Firstly,the nutrients components of golden needle mushroom barn and other roughages was measured. Next,six groups of combinations based on previous study were designed and in vitro rumen fermentation was applied to measure pH,NH3 and dry matter degradation to select the best group of combinations. Then,the beef cattle feeding trial was conducted to test the best combination. Sixteen healthy Simonthal hybrid cattle with similar bodyweight and age were selected and randomly assigned to two groups,control group and experimental group,with 8 cows in each group. The control group was fed with the basal TMR and the experimental group was fed with the optimal TMR diet. The pre-trial period was 10 days for adaption,and the experimental period was 80 days. Blood collection and body-weighting were performed at the beginning and end of the trial to evaluate the feeding effects on bodyweight gain,blood physiological parameters and serum biochemical index. The results showed that the nutrient components of golden needle mushroom barn was similar to straw and maize yellow storage; The best feeding combination was maize green storage (50%)+golden needle mushroom barn (30%)+beef grain (10%)+bean curd residue (10%); The best combination significantly increased bodyweight gain (P<0.01),reduced the feed cost and had no detrimental effects on blood physiological parameters and serum biochemical index. To sum up,golden needle mushroom barn could be used as roughage for beef cattle.

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        王宇,李晗,高景,許宏揚,陳珠涼,陳巧娥,高思,齊智利.金針菇菌糠營養價值評定及其對肉牛生產性能的影響[J].華中農業大學學報,2020,39(5):115-122

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        • 收稿日期:2019-11-06
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        • 在線發布日期: 2020-10-05
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