Effects of sour yogurt addition to corn silage on silage fermentation, aerobic stability, and in vitro digestibility
Öz
Objective: The objective of this study was to determine the effects of sour yogurt addition on fermentation, aerobic stability, and in vitro digestibility of corn silages.
Materials and Methods: The research material consisted of harvested corn in October and sour yogurt. The experimental groups included the control without yogurt added, 10 g sour yogurt (Y10), 20 g sour yogurt (Y20), 30 g sour yogurt (Y30), 40 g sour yogurt (Y40), and 50 g sour yogurt. The sour yogurt was added to 1 kg of fresh corn.
Results: It was found that the amount of crude protein (CP) increased with the addition of yogurt (p<0.01). Water soluble carbohydrate (WSC) contents increased in the groups to which yogurt was added at a high level (p˃0.01). In the study, the highest lactic acid (LA) content was determined as 69.44 and 69.48 g/kg dry matter (DM) in the Y40 and Y50 groups, while the lowest was determined as 64.64 g/kg DM in the control group (p<0.01). As the amount of yogurt added to corn increased (except Y50), the amount of ammonia nitrogen decreased (p<0.01). The addition of sour yogurt increased the amount of enzyme-soluble organic matter, in vitro organic matter digestibility, and metabolic energy (ME) contents of corn silages (p<0.01).
Conclusion: From the study conducted, it was concluded that the addition of sour yogurt to corn at the level of 20 and 30 g/kg had a positive effect on the chemical and microbiological properties of silages.
Anahtar Kelimeler
Corn, Sour yogurt, Fermentation, Silage
Destekleyen Kurum
Coordination of Scientific Research Projects of Tekirdağ Namık Kemal University
Proje Numarası
NKUBAP.03.YL.21.305
Teşekkür
The authors would like to thank the Coordination of Scientific Research Projects of Tekirdağ Namık Kemal University for its financial support
Kaynakça
- Anonymous, 2006. Türk Standartlar Enstitüsü TS 1330. Yoğurt Standardı. TSE, Ankara, 1-11.
- Anonymous, 1986. The Analysis of Agricultural Material. Third Ed. Reference Book, No: 427, London, 428 pp.
- Anonymous, 2005.Türk Gıda Kodeksi Yönetmeliği. T.C. Tarım ve Köyişleri Bakanlığı, ilk yayın 16.11.1997 tarih ve 23172 sayılı Resmî Gazete, son yapılan değişiklik 30.06.2005 tarih ve 25861 sayılı Resmi Gazete Ankara: 2005.
- AOAC, 1990. Official Methods of Analysis.15th ed., Association of Official Analytical Chemists: Arlington, WA, USA, 771 pp.
- Ashbell, G., Z. G. Weinberg, A. Azrieli, Y. Hen & B. Horev, 1991. A simple system to study the aerobic deterioration of silages. Canadian Agricultural Engineering, 33: 391-393.
- Barker, S.B. & W.H. Summerson, 1941. The colorimetric determination of lactic acid in biological material. Journal of Biological Chemistry,138: 535-554.
- Çelik, E. S., 2007. Geleneksel Yoğurtlardan Izole Edilen Laktik Asit Bakterilerinin Aroma Bileşikleri ve Ekzopolisakkarit Üretimlerinin Belirlenmesi. İzmir Teknoloji Enstitüsü (Basılmamış) Yüksek Lisans Tezi, İzmir.
- De Boever, J.L., B.G. Cottyn, F.X. Buysse, F.W. Wainmann & J.M. Vanacker, 1986. The use of an enzymatic technique to predict digestibility, metabolizable and net energy of compound feedstuffs. Animal Feed Science Technology, 14: 203-214.
- Efe, E., Y. Bek & M. Şahin, 2000. Statistical Methods with Solutions in SPSS. Kahramanmaraş Sütçü İmam University Pub. Kahramanmaraş, Turkey, 209 pp.
- Filya, İ., 2001a. Silaj Teknolojisi. Hakan Ofset, İzmir. 55 s.
