Yüksek nemli mısır silajına bor takviyesinin besin değeri, mikrobiyal fermentasyon ve erobik stabilite açısından değerlendirilmesi

Öz

Bu çalışma, yüksek nemli mısır silajında katkı maddesi olarak kullanılan borik asidin silajın fiziksel özellikleri, besin içeriği, fermentasyon profili, aerobik stabilitesi, küf gelişimi ve göreceli yem değeri üzerine etkilerini belirlemek amacıyla gerçekleştirilmiştir. Deneme dört grup halinde tasarlanmıştır: kontrol grubu (C), 30 mg/kg borik asit (B30), 60 mg/kg borik asit (B60) ve 90 mg/kg borik asit (B90). Hazırlanan silaj materyalleri 60 gün süreyle silolama işlemine bırakılmış, ardından duyusal, kimyasal ve mikrobiyolojik analizler yapılmıştır. Bulgular, B60 ve B90 dozlarında borik asit uygulamalarının, kuru madde, lif fraksiyonları (ADF, NDF) ve ham yağ düzeylerini artırarak silajın yapısal bütünlüğünü koruduğunu ortaya koymuştur. Borik asit ilavesi, proteolitik yıkımı azaltarak amonyak azotu seviyelerini düşürmüş ve böylece silaj proteinlerinin korunmasına katkı sağlamıştır. B90 dozu, laktat üretimini artırarak daha yoğun homofermentatif fermentasyonu teşvik etmiş ve aerobik stabiliteyi iyileştirmiştir. Ancak, bu yüksek doz kuru madde sindirilebilirliği, kuru madde tüketimi ve göreceli yem değeri üzerinde olumsuz etkilere neden olmuştur. Sonuç olarak, borik asit silaj kalitesini artırma potansiyeline sahip umut verici bir katkı maddesi olarak değerlendirilebilir, ancak optimum etkinliğin sağlanabilmesi için uygulanacak dozun dikkatle belirlenmesi gerekmektedir.

Anahtar Kelimeler

• Aerobik stabilite
• Bor
• Katkı maddesi
• Silaj kalitesi
• Yüksek nem

Evaluation of boron supplementation on nutritional value, microbial fermentation, and aerobic stability in high-moisture corn silage

Öz

The aim of this study was to investigate how the inclusion of boric acid as an additive in high-moisture corn silage influences its physical characteristics, nutrient composition, fermentation dynamics, aerobic stability, mold development, and relative feed value. The experiment was designed with four groups: a control group (C), 30 mg/kg boric acid (B30), 60 mg/kg boric acid (B60), and 90 mg/kg boric acid (B90). The prepared silage materials were left in the ensiling process for 60 days, followed by sensory, chemical, and microbiological analyses. The findings revealed that boric acid adding at B60 and B90 doses preserved the structural integrity of the silage by increasing dry matter, fiber fractions (ADF, NDF), and ether extract levels. The addition of boric acid reduced ammonia nitrogen levels by decreasing proteolytic degradation, thereby contributing to the preservation of silage proteins. The B90 dose promoted more intensive homofermentative fermentation by increasing lactate production and improved aerobic stability. However, this high dose negatively influenced on dry matter digestibility, dry matter intake, and relative feed value. In conclusion, boric acid can be considered a promising additive with the potential to improve silage quality, but the dose to be applied must be carefully determined to achieve optimal effectiveness.

Anahtar Kelimeler

• Additive
• Aerobic stability
• Boron
• High moisture
• Silage quality

Kaynakça

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