饲喂水合钠钙铝硅酸盐的雏鸡对磷的利用情况

Phosphorus utilization in chicks fed hydrated sodium calcium aluminosilicate.

作者信息

Chung T K, Baker D H

机构信息

Dept. of Anim. Sci., University of Illinois, Urbana 61801.

出版信息

J Anim Sci. 1990 Jul;68(7):1992-8. doi: 10.2527/1990.6871992x.

DOI:10.2527/1990.6871992x

PMID:2166733

Abstract

Two experiments were conducted to evaluate the effects of hydrated Na Ca aluminosilicate (HSCAS) on P utilization of young broiler chicks. Phosphorus-deficient corn-soybean meal diets containing .36% (.134% available) P and 1% Ca were fortified with 0, .05 and .10% P provided as KH2PO4 (22.8% P) or feed-grade dicalcium phosphate (18.9% P). Diets were available ad libitum to chicks receiving 0, .50 or 1.0% HSCAS during the period 8 to 22 d posthatching. Weight of tibia ash, percentage of tibia ash and bone-breaking force were regressed on supplemental P intake to assess P utilization in the absence or presence of HSCAS. Tibia parameters (ash weight, percentage of ash and bone-breaking force) responded linearly (P less than .01) to P supplementation. Regardless of P source (KH2PO4 or dicalcium phosphate), .5% or 1.0% HSCAS had no effect (P greater than .1) on P utilization. With no supplemental P, tibia parameters also were not affected (P greater than .05) by HSCAS. Phosphorus utilization from dicalcium phosphate was estimated to be 87% as efficient as that observed for KH2PO4. The results suggest that dietary HSCAS does not impair utilization of either phytate or inorganic P.

摘要

进行了两项试验以评估水合钠钙铝硅酸盐（HSCAS）对幼龄肉仔鸡磷利用的影响。含0.36%（有效磷0.134%）磷和1%钙的缺磷玉米-豆粕型日粮分别添加0、0.05%和0.10%的磷，磷源为磷酸二氢钾（含磷22.8%）或饲料级磷酸氢钙（含磷18.9%）。在雏鸡出壳后第8至22天期间，给分别添加0、0.50%或1.0% HSCAS的雏鸡随意提供日粮。以补充磷摄入量对胫骨灰重、胫骨灰分百分比和骨断裂力进行回归分析，以评估在添加或不添加HSCAS情况下的磷利用率。胫骨灰分参数（灰分重量、灰分百分比和骨断裂力）对磷添加呈线性反应（P<0.01）。无论磷源是磷酸二氢钾还是磷酸氢钙，0.5%或1.0%的HSCAS对磷利用率均无影响（P>0.1）。在不补充磷的情况下，HSCAS对胫骨灰分参数也无影响（P>0.05）。估计磷酸氢钙的磷利用率为磷酸二氢钾的87%。结果表明，日粮中的HSCAS不会损害植酸磷或无机磷的利用率。