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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Shastak, Y. Witzig, M. Hartung, K. Bessei, W. Rodehutscord, M. |
| Description | Country affiliation: Germany Author Affiliation: Shastak Y ( Institut für Tierernährung, Universität Hohenheim, 70599 Stuttgart, Germany.) |
| Abstract | The main objective of this study was to compare different bone measurements in response to supplements of mineral P sources. Comparisons were also made with P retention and digestibility responses determined in a companion study and with blood inorganic phosphate (P(i)) responses. A corn-soybean meal-based basal diet was used (0.35% total P on DM basis). Anhydrous monosodium phosphate (MSP(a)) or anhydrous dibasic calcium phosphate (DCP(a)) was supplemented to increment the P concentration by 0.08%, 0.16%, or 0.24%. Each of the 7 diets was fed for 10 d starting 11 d (period 1) or 25 d posthatch (period 2). Bone ash and P were determined, and density criteria were measured using quantitative computed tomography. Responses were evaluated and compared based on linear regression analysis. In general, responses to MSP(a) had a greater slope than DCP(a) for all criteria studied. In period 1, differences between the slopes were significant (P < 0.05) for almost all bone criteria. In period 2, the slopes significantly differed for the amounts of ash and P of all bones studied, for tibia, tarsometatarus, and foot ash percentage, for total and cortical density of tibiae, but not for the other criteria. For the different bones, the ratio of slopes for MSP(a) and DCP(a) was very similar based on the amount of ash in both periods. Foot ash proved to be as sensitive as tibia ash for evaluation of mineral P sources in both periods. Ninety-four percent of the variance of the corticalis content based on quantitative computed tomography measurements could be explained by the amount of tibia ash in period 1. Blood serum P(i) and BW gain were not suitable for P evaluation. We concluded that the ranking of mineral P sources based on bone criteria differed from the ranking that was based on P retention or prececal digestibility. This underlines the need for developing a standard protocol of determination of available P in poultry. |
| File Format | HTM / HTML |
| ISSN | 00325791 |
| e-ISSN | 15253171 |
| Journal | Poultry Science |
| Issue Number | 9 |
| Volume Number | 91 |
| Language | English |
| Publisher | Oxford University Press |
| Publisher Date | 2012-09-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | Open |
| Subject Keyword | Discipline Veterinary Medicine Bone Density Physiology Diet Veterinary Phosphorus, Dietary Metabolism Phosphorus Chemistry Animal Feed Animal Nutritional Physiological Phenomena Animals Biological Availability Biomechanical Phenomena Bone And Bones Digestion Dose-response Relationship, Drug Minerals Administration & Dosage Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Animal Science and Zoology |
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