Mevlüt TÜRK, Sebahattin ALBAYRAK, Yalçın BOZKURT

The Change in The Forage Quality of Alfalfa (Medicago Sativa L.) in Grazing and Non-Grazing Artificially Established Pastures

Bu araştırma otlatma sezonu boyunca yapay merada yoncanın ot kalitesindeki değişimi belirlemekamacıyla 2010-2012 yılları arasında Ispartada yürütülmüştür. Merada kullanılan karışım Medicago sativaL. (%15) + Onobrychis sativa Lam. (%15) + Agropyron cristatum L. (%35) + Bromus inermis L.(%35)dır. Otlatma sezonu boyunca otlanan ve korunan alanlardan her 15 günde bir bitki örnekleritoplanmıştır. Yonca örneklerinde ham protein, ADF, NDF, in vitro kuru madde sindirilebilirliği(IVDMD), fosfor, potasyum, kalsiyum ve magnezyum içerikleri belirlenmiştir. Araştırma sonuçlarınagöre hem korunan hem otlatılan alanlarda, yoncanın ham protein, IVDMD, Mg, P ve K içerikleri otlatmamevsimi boyunca azalırken, ADF, NDF ve Ca içerikleri artmıştır. Korunan alanlardaki yoncanın ADF,NDF, Ca ve Mg içeriği otlanan alanlara göre daha yüksek bulunurken, ham protein, IVDMD, P ve Kiçerikleri otlanan alanlarda daha yüksek bulunmuştur. Sonuç olarak, hasat zamanının gecikmesi otlananve korunan alanlarda yoncanın ot kalitesinde azalmaya neden olmuştur.

Yapay Meranın Otlanan ve Korunan Alanlarında Yoncanın (Medicago sativa L.) Ot Kalitesindeki Değişim

This research was conducted to determine the forage quality of alfalfa during grazing season inartificial pasture from the years 2010 to 2012 in Isparta. The mixture of the pasture used were Medicagosativa L. (15%) + Onobrychis sativa Lam. (15%) + Agropyron cristatum L. (35%) + Bromus inermis L.(35%). Forage samples were collected from grazing and non-grazing areas once every 15 days during thegrazing seasons. The crude protein (CP), acid detergent fibre (ADF), neutral detergent fibre (NDF)contents, in vitro dry matter digestibility (IVDMD), phosphorus (P), potassium (K), calcium (Ca) andmagnesium (Mg) ratios were determined on the alfalfa forage samples. According to results of thisresearch, the CP, IVDMD, Mg, P and K contents decreased throughout the grazing season, while ADF,NDF and Ca contents increased in grazing and non-grazing areas. The ADF, NDF, Ca, Mg contents ofalfalfa in non-grazed areas were higher than the grazed areas, while CP, IVDMD, P and K contents ofgrazed areas were higher than non-grazed areas. It can be concluded that the harvesting at the late stagescaused a reduction in forage quality of alfalfa in grazing and non-grazing areas.

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