October 2014

  New Harvest Wheat – Protein and Starch Relationships

Decisions are now being made on the matrix values for protein for wheat as more new crop wheat analysis data becomes available. If the matrix protein value is reduced, should the energy content be increased?

Trouw Nutrition GB's CerealWatch 2014 study confirms the inverse relationship between wheat protein and starch. As enzymatic starch content of wheat is the main predictor of ME value, our conclusion is that energy values should definitely be adjusted too. This can help offset the financial impact of low protein wheat in feed formulation.

If you would like to discuss wheat analysis, including enzymatic starch, and AMEn values further, please contact John Ward.

 

 

 

Home Grown Protein – Replacement for Soya?

Sustainability is one of Nutreco's core values and recent in-house research has shown that alternative protein sources can be used at higher levels in poultry feeds to replace soya bean. It is also possible using precision formulation and digestible amino acids values to further reduce the overall crude protein levels.

Soya can be partially or wholly replaced with sunflower and rape by-products, or extruded products containing field beans or peas, depending on price and availability.

The degree of replacement will vary with the type and age of bird. A review of current feed formulations reveals soya is still making up around 20% of broiler diets but that some layer customers are already using minimal levels of soya in older bird diets with no negative consequences on performance or increase in parameters such as dirty eggs.

For a review of protein sources and levels please contact John Ward.

 

E Coli – on the increase and the importance of water quality

Colibacillosis remains an important cause of broiler mortality and rejects, with some suggestion that the incidence of E. coli-related rejects is rising year on year. E. coli can be vertically transmitted from the breeder or acquired in the hatchery – although water-borne infection may also be a possibility. Water lines in any case can provide the perfect breeding ground for the multiplication of bacteria and dissemination of infection.

Investment in cleaning of lines and treatment of water, with products such as Selko-pH is likely to give a significant return on investment. Presan-FY, a feed supplement, also has bactericidal effects against Gram-negative bacteria so helping to protect against pathogenic E. Coli.

Research work (PLOS ONE: A Longitudinal Study Simultaneously Exploring the Carriage of APEC Virulence Associated Genes and the Molecular Epidemiology of Faecal and Systemic E. coli in Commercial Broiler Chickens) has indicated that the frequency of potentially pathogenic E. coli strains from faecal isolates is high during the first week of life of the broiler, so an early, strong strike might be the best and most cost effective approach to control infection. A broiler trial with Selko-pH showed that using it for the first 14 days was associated with reduced medication costs (1.2 eurocents per birds compared with 2.1 eurocents per bird).

Please contact Tim Carter for more details.