Aspir Küspesine (Carthamus tinctorius) yem katkı maddesi olarak Çınar Yaprağının (Platanus orientalis L.) İkamesi; In Vitro Gaz Üretimi ve Sindirilebilirlik Üzerine Etkileri

Öz

Bu çalışma, ruminant beslenmesinde alternatif yem katkı maddeleri kullanımı kapsamında, aspir küspesine (Carthamus tinctorius) ikame olarak çınar yaprağının (Platanus orientalis L.) potansiyelini değerlendirmek amacıyla yürütülmüştür. Çalışmada, aspir küspesine farklı oranlarda çınar yaprağı ilavesiyle oluşturulan deneme gruplarının in vitro gaz üretimi, tahmini sindirim ve enerji parametreleri, pH, TUYA ve NH3-N değerleri belirlenmiştir. Gaz üretimi, Hohenheim gaz üretim tekniğiyle 24 saatlik inkübasyon sürecinde ölçülmüş, elde edilen veriler doğrultusunda metabolik enerji (ME), net enerji laktasyon (NEL) ve organik madde sindirim derecesi hesaplanmıştır. Ayrıca rumen fermantasyonunu etkileyen tanen içeriği de dikkate alınarak mikrobiyal faaliyetler üzerindeki olası etkiler yorumlanmıştır. Elde edilen sonuçlar incelendiğinde gerçek sindirilen kuru madde miktarı, mikrobiyal protein, gerçek sindirim derecesi ve NH3-N parametrelerinin gruplar arasındaki farklılıklar linear olarak önemli bulunmuştur (p<0,05). Katkı maddesi olarak katılan çınar ağacı yaprağının yapısında bulunan tanenin anti-mikrobiyal ve anti-nutrisyonel özelliklerinden dolayı sindirimi ve sindirim sonucu oluşan parametreleri olumsuz etkilediği sadece hayvansal üretim açısından önem arz eden NH3-N değerin azalmasında destekleyici etki gösterdiği tespit edilmiştir. Bu bağlamda çınar yaprağı gibi tanen içeren kaynakların sürdürülebilir ve yerel kaynaklı bir yem katkı maddesi olarak protein içeriği yüksek yemlerde ya da rasyonlarda kullanılabileceği öngörülmüş olup in vivo çalışmalarla desteklenmesi kanaatine varılmıştır.

Anahtar Kelimeler

• Aspir küspesi
• çınar yaprağı
• in vitro gaz üretimi
• sindirilebilirlik
• yem katkı maddesi
• ruminant beslenmesi

The Replacement of Safflower meal (Carthamus tinctorius) with Plane Tree Leaves (Platanus orientalis L.) as a Feed Additive; Effects on In Vitro Gas Production and Digestibility

Öz

This study was conducted to evaluate the potential of plane tree leaves (Platanus orientalis L.) as an alternative feed additive to safflower meal (Carthamus tinctorius) in ruminant nutrition. The effects of incorporating different levels of plane tree leaves into safflower meal-based diets on in vitro gas production, estimated digestibility, energy parameters, pH, total volatile fatty acids (TVFA), and ammonia nitrogen (NH₃-N) levels were investigated. Gas production was measured over a 24-hour incubation period using the Hohenheim gas production technique. Based on the results, metabolic energy (ME), net energy for lactation (NEL), and organic matter digestibility (OMD) were calculated. In addition, considering the tannin content of the leaves, potential impacts on microbial activity during rumen fermentation were interpreted. The results showed that the parameters including truly digested dry matter, microbial protein, true digestibility, and NH₃-N levels differed significantly among the experimental groups in a linear manner (p<0.05). The tannins present in plane tree leaves exhibited anti-microbial and anti-nutritional effects, leading to negative impacts on digestibility and associated fermentation parameters. However, a beneficial reduction in NH₃-N concentration—a factor of importance for animal production efficiency—was also observed. In conclusion, it was suggested that tannin-rich sources such as plane tree leaves may serve as sustainable and locally available feed additives, particularly in protein-rich feeds or rations. However, further in vivo studies are warranted to support these findings.

Anahtar Kelimeler

• Safflower meal
• plane tree leaves
• in vitro gas production
• digestibility
• feed additive
• ruminant nutrition.

Kaynakça

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