Bazı Kaba Yemlere Farklı Seviyelerde İlave Edilen Söğüt Ağacı (Salix Alba) Yaprağının İn Vitro Sindirim ve Metan Oluşumu Üzerine Etkisi

Bu araştırma, ruminant beslenmesinde yaygın olarak kullanılan buğday samanı, yonca kuru otu ve mısır silajına farklı oranlarda (% 0, % 10, % 25, % 50, % 75 ve % 100) eklenilen söğüt ağacı (Salix alba) yaprağının (SAY) in vitro metan gazı oluşumuna etkisini belirlemek amacıyla yapılmıştır. Farklı oranlarda SAY eklenmiş deneme yemleri in vitro gaz tekniği ile 24 saatlik inkubasyona bırakılmıştır. İn vitro gaz üretim tekniği ile 24 saat içerisinde meydana gelen gaz bilgisayar destekli metan gazı ölçüm cihazına özel bir düzenekle enjekte edilerek metan gazı miktarları ölçülmüştür. SAY’da kuru maddede 105 g/kg seviyesinde kondanse tanen içeriği belirlenmiştir. En düşük metan üretimi buğday samanına % 50 ve 75, yonca kuru otuna ve mısır silajına % 75 seviyelerinde SAY ilave edilen gruplarda elde edilmiştir (P<0.05). En düşük amonyak azot değeri, yonca kuru otuna % 50 ve % 75 seviyelerinde SAY eklenen gruplarda saptanmıştır (P<0.001). Ancak buğday samanına eklenen SAY amonyak azot değerini yükseltmiştir (P<0.01). Sonuç olarak SAY’nın kaba yemlere eklenmesi, in vitro denemelerinde metan gazı oluşumunu düşürmüştür. SAY ilavesi metabolik enerji (ME) değerleri ile in vitro organik madde sindirilme derecesini (İVOMS) buğday samanında artırırken, yonca kuru otu ve mısır silajında düşürmüştür. Ayrıca SAY’nın hayvan performansı üzerindeki etkisinin ortaya konulabilmesi için in vivo çalışmalara ihtiyaç vardır

Anahtar Kelimeler:

Söğüt ağacı yaprağı, Metan, İn vitro sindirilebilirlik

The Effect of Willow Tree (Salix Alba) Leafs Added at Different Levels to Some Roughages on In Vitro Digestibility and Methane Production

This study was carried out to investigate the effect of willow tree leafs (Salix alba) added at different levels (0 %, 10 %, 25 %, 50 %, 75 % and 100 %) to grass forage, wheat straw, alfalfa forage and maize silage on the in vitro methane production. Methane production after 24 h incubation of the roughages were measured by injection of the produced gas samples into a special apparatus connected to computer. Condensed tannin content of willow tree leafs was determined as 105 g/kg dry matter. The lowest methane production was determined in the groups of wheat straw added with 50 and 75% willow tree leafs as well as in the groups of alfa alfa hay and corn silage added with 75 % willow tree leafs (P<0.05). The lowest ammonia nitrogen level was observed for alfalfa forage in the treatment group containing 50 and 75 % willow tree leafs (P<0.001). However addition of willow tree leaves to wheat straw increased the ammonia nitrogen value in all treatment groups compared to control group (P<0,01). As a conclusion addition of the willow tree leaf to roughages decreased in vitro methane production. Metabolic energy value and in vitro dry matter digestibility of wheat straw were increased while these values were decreased in alfa alfa roughage and corn silage by addition of willow tree leaf. Further in vivo studies are required in order to determine the effect of willow tree leaf addition on animal performance.

Keywords:

Willow leaf, Methane, In vitro digestibility,

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