the purpose of this study, was to evaluate the use of echinacea purpurea (ep) root as a feed additive in broiler chicken diets. 340 7-d-old male broilers (ross 308) were randomly allocated into 5 experimental treatments (with 4 replicates) including control diet without additive, experimental diet supplemented by flavophospholipol (fl) (650 ppm) and three experimental diets were supplemented by...

Phosphorus (P) deficiency is a major constraint to crop production on highly weathered, lowactivity clay soils in the humid zone of West Africa. Past research suggested a linear relationship between grain yield and P uptake over a range of fertilizer P applied to upland rice cultivars. However, there is lack of information on how these relationships are affected by the long-term fertilizer ...

The study investigated the effects of feeding duration on length and weight ileum, basal endogenous loss (BEL) phosphorus (P) broiler chickens fed a P-free diet (PFD). A standard starter was to 384 birds for 15 days. On day 15, they were weighed randomly allocated one three treatment groups in randomized complete block design, with eight replicate cages per 16 cage. each group PFD 2, 3, or 4 Th...

Several methods have been proposed for recommendation of phosphorus fertilizers. Each of them only examines the concentration of phosphorus in the soil or plant, while none of them investigates the correlation between phosphorus concentrations in the soil and plant. In this study, a method called "integrated plant and soil system" (IPSS) is proposed to describe phosphorus fertilizer. In this sy...

Three experiments were conducted to determine the effects of pelleting and extrusion of feeds on the utilization of phytate P by broilers. The first experiment investigated the effects of pelleting the whole corn-soybean meal (SBM) diet, the corn, or SBM separately on phytate P utilization. The P-deficient basal diet contained 0.5% total P and 0.2% phytate P. Steam pelleting the whole diet, the...