The rocky relationship between limestone solubility and phytase efficacy

poultry

It is well known that limestone is used as a major source of inorganic calcium (Ca) in commercial poultry diets, as well as microbial phytase to improve phosphorus (P) and Ca utilisation, and to reduce P excretion into the environment.  The efficacy of commercial microbial phytase to degrade phytate (myo-inositol hexakisphosphate, or IP6) in the…

Health is wealth: The microbiome and nutrition

baby chicks

In the first article in this series, we discussed the increasing demand for poultry meat due to both population growth and an increase in per capita consumption, and its related effect on the incidence of production diseases in poultry production systems. Last month, we investigated the interactions between the poultry gastrointestinal tract (GIT) and the…

Health is wealth: The GIT and immunity

poultry GIT

Last month, we discussed the increasing demand for poultry meat due to both population growth and an increase in per capita consumption, and its related effect on the incidence of production diseases in poultry production systems. One important factor in identifying cost-effective solutions to these production diseases is understanding the interactions between the poultry gastrointestinal…

The variability of maize

It has been shown by several studies that metabolisable energy (ME) values vary significantly, not only between different feed ingredients, but also between different batches of the same feed ingredient within the same region. When formulating feed using tabulated values, this can result in the variability of maize ME of more than 50 kCal/kg between…

The benefits of measuring calcium digestibility from raw materials in poultry

limestone variation

Abstract To date, poultry diets have been formulated to meet estimated requirements for total calcium (Ca), while frequently also maintaining a specified ratio of total Ca to available phosphorus (AvP). In vegetable-based diets, limestone can contribute in excess of 50% and 90% of dietary Ca in broiler and layer diets, respectively. In laying hens, it…

Making the most of phytase

phytase

Chemuniqué’s enzyme partner, DuPont Animal Nutrition, recently released a new white paper on the effective use of phytase matrix values in feed formulations and the significant positive impact it has on improving performance, reducing feed costs, and boosting production efficiencies. They examine the latest research to further explore the use of full matrix values with…