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Investigation on bioavailability of rumen bacterial and protozoal phosphorus using a chick-model | ||
Journal of Livestock Science and Technologies | ||
مقاله 2، دوره 1، شماره 2، دی 2013، صفحه 13-19 اصل مقاله (347 K) | ||
نوع مقاله: Research Article (Regular Paper) | ||
شناسه دیجیتال (DOI): 10.22103/jlst.2013.547 | ||
نویسندگان | ||
A. Moharrery* 1؛ M. Karimi2؛ E. Asadi Khoshoei2 | ||
1Shahrekord University | ||
2Animal Science Department, Agricultural College, Shahrekord University P.O. Box 115, Shahrekord, Iran | ||
چکیده | ||
Ruminal bacteria and protozoa provide excellent organic phosphorus (P) sources for the host animal. This experiment was conducted to compare the bioavailability of bacterial and protozoal P in comparison with that of dicalcium phosphate (DCP) as a reference phosphorus source. Bacteria and protozoa were isolated from the rumen contents of dairy cows and the chick-model was used to determine the phosphorus bioavailability. Fifteen day-old chicks were used in a completely randomized design with 4 treatments consisting of a control diet (without P, as a basal diet), bacterial P+basal diet, protozoalP+basal diet, and DCP+basal diet. Phosphorus balance was selected as the response criterion for phosphorus bioavailability assessment, using multiple linear regressions. The results showed a higher phosphorus bioavailability of protozoal P and DCP compared with bacterial P (P | ||
کلیدواژهها | ||
Rumen bacteria؛ rumen protozoa؛ phosphorus؛ bioavailability؛ chick-model؛ dairy cows | ||
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