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Fırat Üniversitesi Sağlık Bilimleri Dergisi (Veteriner)
2000, Cilt 14, Sayı 1, Sayfa(lar) 153-161
[ Turkish ]
The Effects of Two Different Protein Sources with Using of Barley- Vetch Hay instead of Straw on Ruminal Fermantation and Digestibility in Lambs
Pınar TATLI, İ.Halil ÇERÇİ
Fırat Üniversitesi Veteriner Fakültesi, Elazığ-TÜRKİYE
Keywords: Protein, Roughage, Soybean Meal, Cottonseed Meal, Digestibility, Ruminal Fermantation, Lamb

The aim of this study was to examine the effects of two different protein sources (soybean meal and cottonseed meal) and roughage feed sources (straw and barley-vetch yield) on digestibility of crude nutrient matter and ruminal fermentation in lambs. 28 Akkaraman lambs at the average weight of 20 kg and age of 4 months were used in the study. The experiment was conducted according to 2x2 factorial arrangement. Experimental diets were consisted of equal energy and crude nutrient matter levels as suggested by NRC standards. The study groups were determined according to the protein and roughage sources in the diets; I. group included soybean meal, II. group cottonseed meal, III. group straw and IV. group included barley vetch hay in diet composition. The composition of diets was changed between 0-56th days as the need of animals differed according to live weight (I. Period) and between 56-112th days as appropriate to the needs (II. period). The digestibility of dry matter, crude protein, crude fiber and nitrogen-free extract was increased by the addition of soybean meal to the diets (P<0.05). The digestibility of organic matter, ADF and NDF was increased by the addition of soybean meal and barley-vetch hay to the diets particularly at II. period of the experiment (P<0.05). The pH value of ruminal fluid did not differ significantly between the groups. The ammonia value in ruminal fluid increased significantly by the addition of soybean meal and barley- vetch hay to the diets at I. Period, whereas only the same effect was observed in soybean meal supplement at II. period. Total volatile fatty acid concentration of ruminal fluid did not differ significantly by the addition of soybean meal and barley-vetch hay to the first diets. In contrast, total volatile fatty acid concentration was determined to increase significantly except for samples taken 4 hours after feeding, at II. period (P<0.01).

[ Turkish ]
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