冬閑田飼用小黑麥不同生育期營養(yǎng)價值和青貯品質(zhì)比較

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中圖分類號：S816 文獻標識碼：A DOI編碼：10.3969/j.issn.1006—6500.2025.02.005

Nutritional Value of Winter Fallow Field Fed Rye at Different Growth Stages Comparison with Silage Quality

ZHANG Yiwei'，GUO Shuang'，ZHANG Shengnan'，WANG Luyao'，SHAO Liwei2，WANG Hongying' （1.TianjinAgiculturalDevelopentSeviceenteranjin1，hina;.ebeiAnialHusbandryndVeteriaryI stitute，Baoding，Hebei O710OO，China）

Abstract：Toinvestigatetechanges inprimarynutrionalvauesandsilagefermentationqualityofforagetriticalevarietyJisiNo duringdifferentgowthsagesinanjinampleswerecoctedatading，fowering，filingndil-ripesages.Teoentsof majornutrientsandfermentationqualityinbothhayandsilagewereanalyzed.Theresultsindicatedthatduringtheheadingstage，the crude protein content of Jisi No.3 hay reached the highest value of 1 3 . 7 0 % ，which had been significantly higher than other stages. Thecontentsofaciddetergentfiber（ADF）andneutraldetergentfiber（NDF）werethelowestatheadingstage，whilethe3O-hourNDF digestibility at this stage had been significantly higher than other periods.The starch content peaked at 9 . 6 0 % during the milk-ripe stage，and the total digestible nutrients（TDN） reached the maximum of 6 0 . 4 0 % at the same stage. Non structural carbohydrates showedanincreasingtrend.Theash，calcium，andphosphoruscontentsatheadingstagehadbeensignificantlyhigherthanother stages.After ensiling，the crude protein content at heading stage reached the highest value of 1 6 . 0 7 % . The ADF and NDF contents duringflowering，filingndilk-riestageswereallsigficantlyhighrtanoseatadingstage.The3O-ourNDdigsibility at heading stage remained the highest. The crude fat content peaked at 3 . 2 6 % during heading stage，while the TDN reached the maximum of 5 8 . 5 3 % at milk-ripe stage.The relative foragequality（RFQ）valueat heading stage reached110.33，which was the highest. The ash，calcium，and phosphorus contents at heading stage were also the highest.Lactic acid content ranged from 2 . 0 1 % to 3 . 2 9 % ， and p H valuesrangedfrom4.5Oto4.91，bothpeakingatheadingstage.Inconclusion，whenutilizing winterfallowfieldsinTianjinto cultivateJisiNo.3foragetriticale，ayshouldbearvestedathadingstage，ilesilageshouldbepreparedurigfloweringtolling stages.

Keywords： forage rye; reproductive period; nutritive value; silage quality

飼用小黑麥具有“高單產(chǎn)、低投入、品質(zhì)優(yōu)”的特點，現(xiàn)已成為世界畜牧業(yè)發(fā)展的一種新型飼料作物，在飼草應(yīng)用和生態(tài)建設(shè)中越來越受到人們重視目前，部分專家建議將飼用小黑麥納人國家糧改飼項目補貼，與青貯玉米倒茬輪作。（剩余5075字）