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Phosphorus digestibility and bioavailability in soybean meal, spray-dried plasma protein, and meat and bone meal determined using different methods
- Source :
- Poultry Science, Poultry Science, Vol 99, Iss 10, Pp 4998-5006 (2020)
- Publication Year :
- 2020
-
Abstract
- Three experiments were conducted to determine phosphorus (P) digestibility and bioavailability using different methods. The objective of the first experiment was to determine ileal P digestibility of soybean meal (SBM), meat and bone meal (MBM), and spray-dried plasma protein (SDPP) using a precision-fed broiler chick assay. This assay involved feeding 8 g of SBM, MBM, or SDPP to broiler chicks at 21 D of age. At 6 h after feeding, ileal digesta were collected. Ileal P digestibility of SBM, MBM, and SDPP was 64, 42, and 94%, respectively. In the second experiment, ileal P digestibility and excreta P retention of SBM, SDPP, and MBM were determined using an ad libitum fed chick assay. On day 17 of age, chicks were placed on 1 of 12 dietary treatments that consisted of diets containing increasing levels of SBM, SDPP, or MBM. On day 21, ileal digesta and excreta were collected. True ileal P digestibility and true excreta P retention estimated using regression of ileal P or excreta P output on dietary P content yielded true ileal P digestibility values for SBM, SDPP, and MBM (2 diet methods for MBM) to be 83, 98, 61, and 23%, respectively. True excreta P retention values for SBM, SDPP, and MBM (2 methods) were determined to be 51, 99, 32, and 53%, respectively. The third experiment determined bioavailability of P in SBM, SDPP, and MBM relative to KH2PO4 using a chick bone ash bioassay. Dietary treatments included a P-deficient cornstarch–dextrose–SBM diet supplemented with 2 increasing levels of P from KH2PO4, SBM, SDPP, or MBM. Bioavailability of P based on tibia ash estimated using the multiple regression slope ratio method was 36, 125, and 76% for SBM, SDPP, and MBM, respectively, relative to KH2PO4. The results of this study indicated the digestibility/relative bioavailability of the P in SDPP was very high for all 3 methods, but values for SBM and MBM varied greatly among different methods.
- Subjects :
- Meat
Soybean meal
chemistry.chemical_element
Biological Availability
Metabolism and Nutrition
soybean meal
03 medical and health sciences
chemistry.chemical_compound
Animal science
Bioassay
Animals
meat and bone meal
lcsh:SF1-1100
030304 developmental biology
0303 health sciences
Biological Products
Minerals
Chemistry
Phosphorus
digestive, oral, and skin physiology
0402 animal and dairy science
Broiler
04 agricultural and veterinary sciences
General Medicine
Blood Proteins
040201 dairy & animal science
Blood proteins
Animal Feed
Meat and bone meal
Bioavailability
Diet
phosphorus digestibility
Bone ash
plasma protein
Phosphorus, Dietary
Animal Science and Zoology
Animal Nutritional Physiological Phenomena
Digestion
lcsh:Animal culture
Soybeans
Chickens
Food Analysis
Subjects
Details
- ISSN :
- 15253171
- Volume :
- 99
- Issue :
- 10
- Database :
- OpenAIRE
- Journal :
- Poultry science
- Accession number :
- edsair.doi.dedup.....5dfd6d718143fe0f46ca89ad43fdcd32