Emrah Kaya

Effect of peppermint (Mentha piperita) essential oil on rumen microbial fermentation of barley grain

The objective of this experiment was to determine the effect of peppermint essential oil on in vitro gas, volatile fatty acids (VFA), methane, ammonia production, metabolisable energy (ME) and organic matter digestibility (OMD) of barley grain. Gas productions of barley grain were determined at 3, 6, 12, 24, 48, 72 and 96 h incubation times in the presence (100, 200, 400, 800 and 1200 mg/L) and in the absence of peppermint essential oil. The supplementation of peppermint essential oil significantly (P < 0.001) reduced the total gas production (A), ME, OMD, total VFA, methane and ammonia production. The mean decreases in A, OMD, ME, total VFA, methane and ammonia production of barley grain were 0.0338, 0.0341, 0.0054, 0.041, 0.023 and 0.0079 units per mg peppermint essential oil supplementation, respectively. In conclusion, the current study has provided significant information on the anti-microbial activity of peppermint essential oil causing an inhibition of the overall fermentation process of barley grain. Therefore, before large scale implementation, further investigations are required to determine the effect of peppermint essential oil on voluntary food intake, animal performance and the profitability of the supplementation in vivo.

Effect of species on chemical composition, metabolizable energy, organic matter digestibility and methane production of some legume plants grown in Turkey

ABSTRACT The aim of the current experiment was to evaluate the chemical composition, metabolizable energy (ME), organic matter digestibility (OMD), gas and methane production of some legume plants estimated by in vitro gas production technique, and to determine the relationship among chemical composition, ME, OMD, gas and methane production of some legume plants. Although species has a significant effect on the chemical composition, gas production, ME and OMD species has no effect on methane emission of legume hays. Neutral detergent fibre (NDF) and acid detergent fibre (ADF) ranged from 22.86% to 42.93% and 20.24% to 37.16% respectively. Crude protein (CP) contents of legume hays ranged from 13.61% to 20.55%. Neutral detergent fibre and ADF contents of legume plants are negatively correlated with gas production, ME and OMD. It can be concluded that legume plant studied in the current experiment showed a wide nutritional diversity and will provide not only protein but also fibre for livestocks. They may exhibit complementary role for ruminant animals grazing on poor quality forages. Legume species studied in the current experiment had a no anti-methanogenic properties.

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.