Koonphol Pongmanee

I. INTRODUCTIONA shortage and rising cost of major feed ingredients triggers more pressure on local poultry industries to maximize the use of alternative feed ingredients. Cassava is a potential alternative to corn. It is a good source of energy, with 60-70% of starch & 2-4 % of crude fiber (Staack et al, 2019). However, it has low protein (2%) with low methionine content (0.03%) (Morgan and C ...

SummaryThe short-term study was conducted to test the effects of phytase supplementation in laying hen diets during peak production on bone characteristics as well as phosphorus (P) and calcium (Ca) digestibility.ProblemA large portion of dietary phosphorus is not utilized by laying hens and is excreted in feces, which leads to phosphorus pollution in the environment. Adding inorganic phosphorus t ...

SummaryThis study was conducted to test the efficacy of phytase in low phosphorus and calcium diets in the late production cycle for maintaining the productivity, eggshell and bone quality of hens fed low phosphorus and calcium.ProblemExogenous phytase supplementation has become a standard practice for poultry diets to liberate available phosphorus and reduce excretion of phosphorus in manure. Man ...

About the studyPhytase supplementation has become a standard practice for poultry diets to enhance phosphorus (P) utilization and subsequently reduce P excretion. Previous phytase studies on hen performance, eggshell and bone quality have been done over short durations and using hens of varying ages.The knowledge gap is that there are no long-term phytase studies covering the rearing period throug ...