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Phosphorus digestibility and bioavailability in soybean meal spray-dried plasma protein and meat and bone meal determined using different methods

机译:磷消化率和豆粕中的生物利用度使用不同方法测定的喷雾干燥的血浆蛋白和肉类和骨粉

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摘要

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.
机译:进行三个实验以使用不同方法确定磷(P)消化率和生物利用度。第一次实验的目的是使用精密喂养的肉鸡分析来确定大豆膳食(SBM),肉类和骨粉(MBM),肉类和骨粉(MBM)(SDPP)的髂骨P消化率。该测定涉及在21岁处喂食8g sbm,mbm或sdpp至肉鸡雏鸡。在喂食后6小时,收集ILEAL DIGESTA。 SBM,MBM和SDPP的ILAL P消化率分别为64,42和94%。在第二种实验中,使用AD Libitum Fed Chick测定法测定SBM,SDPP和MBM的ILAL P P消化率和EXCRETA P保留。在年龄17天,雏鸡被置于12个饮食治疗中,其中包含含有含有SBM,SDPP或MBM水平的饮食。在第21天,收集Ileal Digesta和Excreta。使用肠P含量的eLEAL p或Excreta p输出估计的真正的ilial p消化率和真实的Excreta p保留饮食p含量的Realla eve iliap,SDPP和MBM的2个饮食方法)的真实髂骨P消化率值为83,98,61分别为23%。 SBM,SDPP和MBM(2种方法)的真正的Excreta P保留值分别确定为51,99,32和53%。使用小鸡骨灰生物测定的第三种实验在SBM,SDPP和MBM中的生物利用度相对于KH2PO4。饮食治疗包括P缺陷玉米淀粉 - Dextrose-SBM饮食,其补充有2个来自KH2PO4,SBM,SDPP或MBM水平的2级。基于使用多元回归斜率法估计的胫骨灰的P的生物利用度分别为36,125和76%,分别相对于KH2PO4的SBM,SDPP和MBM。本研究的结果表明,所有3种方法,SDPP中P的消化率/相对生物利用度非常高,但SBM和MBM的值在不同的方法中大大变化。

著录项

  • 期刊名称 Poultry Science
  • 作者单位
  • 年(卷),期 2020(99),10
  • 年度 2020
  • 页码 4998–5006
  • 总页数 9
  • 原文格式 PDF
  • 正文语种
  • 中图分类
  • 关键词

    机译:磷消化率;大豆饭;血浆蛋白;肉和骨粉;

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