2004, Cilt 20, Sayı 1, Sayfa(lar) 013-018
The Effect of Different Energy and Protein Sources on Nutrient Digestibility and Nitrogen Retention in Sheep
Tayları Aksu1, Suphi Deniz2
1M.K.Ü. Veteriner Fakültesi Hayvan Besleme ve Beslenme Hastalıkları Anabilim Dalı, HATAY
2Y.Y.Ü. Veteriner Fakültesi Hayvan Besleme ve Beslenme Hastalıkları Anabilim Dalı, VAN
Keywords: Energy Source, Protein Source. Digestibility, Nitrogen Retention
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The objective of this Study was to evaluate the effects of different energy (barley and dry sugar beet pulp (DSBP)) and protein sources (soybean meal (SBM), SBM-treated with formaldehyde (FTSBM), cotton-seed meal (CSM)) on nutrient digestibility and nitrogen retention in sheep. In this study, 4 rumen fistulated Morkaraman rains were used. Digestibilities of dry matter, organic matter, crude protein, crude cellulose, ether extract, and N- free extract were similar (P>0.05) among animals fed different diets. Digestibitrties. as percentage were 79.49, 79.03,81,20, and 77,91 for DM; 80.38, 80.24, 83.37, and 80.49 for OM; 72.40, 70.52, 76.80, and 74.56 for CP; 67.00, 70.17, 73.87, and 65.03 for crude cellulose; 89.12,65.85,92.22, and 84.71 lor crude oil; 84.26. 86.03,87,29, and 85 59 for N-free extract for animals led bar-ley+FTSBM. DSBP+FTSBM, DS8P+SBM+CSM mixtures and commercial diet, respectively .The re was no significant differences on N-balance among animals fed different diets. N-retentions were 10.14, 7.22, 7,14, and 8.51 g for animals fed barley*FTSBM, DSBP+FTSBM, DSBP+SBM+CSM mixtures and commercial diet, respectively. Percentages of N retained in body and N digested were 60.36, 42,90, 42,84, and 51.05; 82,31, 80.93, 5658, and 68.46 for bartey+FTSBM, DSBP+FTSBM, DSBP+SBM+CSM mixtures, and commercial diet, respectively. It was suggested from these experiments Ihal; a) energy and protein sources didn't effect nutrient digestibility and nitrogen retention; b) formaldehyde treatment of protein source should be further studied; c) this results should be supported with fattening experiment to interpret the results safely.