Çağrı Özgür Özkan

Effect of species on chemical composition, metabolisable energy, organic matter digestibility and methane production of oak nuts

The aim of the current experiment was to determine the effect of species on chemical composition metabolisable energy (ME), organic matter digestibility (OMD) and methane production of oak nuts. The crude protein content was ranged from 2.71% to 6.14%. Crude protein of oak nuts from Quercus ithaburensis ssp. macrolepis was significantly higher than those of the other oak species. Neutral detergent fibre (NDF) and acid detergent fibre (ADF) contents of oak nuts were ranged from 19.29% to 34.58% and 12.65% to 20.85%, respectively. NDF and ADF contents of oak nuts from Quercus coccifera were significantly higher than those of the other oak species. The NFC contents of Quercus suber and Q. ithaburensis ssp. macrolepis were significantly higher than those of Q. coccifera and Quercus branti. Condensed tannin contents of oak nuts were ranged from 1.48% to 3.50%. Condensed tannin contents of oak nuts from Q. coccifera and Q. branti were significantly higher than those of Q. suber and Q. ithaburensis ssp. macrolepis. As conclusion, species had a significant effect on the chemical composition ME, OMD and methane production of oak nuts. Oak from Q. ithaburensis ssp. macrolepis will provide nut with quite digestible and high ME for ruminant animals although it is likely that animal consumed oak nut from Q. ithaburensis ssp. macrolepis will produce more methane and more pollutant to environment. However further investigations are required to determine the effect of oak species on the feed intake and animal performance.

Determination of Chemical Composition and Nutritive Value of Some Vegetables Leaves for Ruminant Animals

Bu calisma bazi sebze yapraklarinin kimyasal kompozisyonunu ve ruminantlar icin besleme degerini belirlemek icin yurutulmustur. Sebzenin turu yapraklarin kimyasal kompozisyonunu onemli (P 0.05) etkilememistir. Sebzelerin gaz uretimi 37.93 ile 45.25 ml arasinda degismistir. Siyah havuc ve kereviz yapragindan uretilen gaz miktari diger sebzelerden onemli derecede (P<0.001) daha yuksek bulunmustur. Sebzelerin metabolik enerji icerigi 8.90 ile 10.16 MJ/kg arasinda degismistir. Sebzelerin metan uretimi 6.67 ml ile 11.13 ml arasinda degismistir. Şeker pancari yapraginin metan uretimi diger sebzelerin metan uretiminden daha yuksek bulunmustur. Metan gazi uretiminin yuzdesel olarak 17.60 ile 25.46 arasinda degismistir. Siyah havuc, beyaz havuc, kirmizi turp, beyaz turp, kereviz ve seker pancari yapragi ruminant hayvanlara enerji ve protein saglamada onemli bir potansiyele sahiptir. Bununla birlikte seker pancarinin ruminant hayvanlarin rasyonlarina katilmasi durumunda seker pancarinin yuksek miktarda metan uretim potansiyeli goz onune alinmalidir .

Determination of potential nutritive value of cotton gin trash produced from different feed companies

The aim of this study was to determine the potential nutritive value of cotton gin trash obtained from five different companies using chemical composition and in vitro gas production technique. There was considerable variation among cotton gin trash obtained from five different companies in terms of chemical composition and in vitro gas production, metabolizable energy (ME) and organic matter digestibility (OMD). The crude protein (CP) contents of cotton gin trash ranged from 6.59% to 12.55% on dry matter (DM). Neutral detergent fibre (NDF) and acid detergent fibre (ADF) contents ranged from 49.24 to 62.22% on DM and 40.73 to 48.31% on DM respectively. The gas production ranged from 22.91 to 33.51 ml of 200 mg of DM after 24-h incubation. The ME and OMD contents of cotton gin trash ranged from 5.38 to 7.09 MJ/kg DM and 37.44 to 52.69% respectively. In conclusion, chemical characterization of CP, OMD and ME suggests that the cotton gin trash moderate level of CP concentration and was digestible therefore it could be said that cotton gin trash will provide roughage of an acceptable quality for ruminant animals.