GUT HEALTH ▶▶▶
Effect of sodium source without chloride
Poultry producers, who switch the source type of sodium, can make feed cost savings whilst optimising performance. Some trials are discussed here.
BY YVES MERCIER, PASCAL THIERY AND DOLORES I. BATONON-ALAVO, ADISSEO FRANCE SAS
A
ll poultry feeds need to be supplemented with so- dium, an element essential for many physiological functions. This is generally provided by salt plus a chloride-free source of sodium such as: sodium bi-
carbonate, sodium carbonate or sodium sesquicarbonate. An alternative and cost-effective chloride-free source of sodium is available to poultry producers in the form of sodium sul- phate. Producers can save money on the cost of sodium addi- tion; while managing dietary electrolyte balance (DEB) to support broiler performance and litter quality.
Formulation considerations It is commonly accepted by nutritionists that the physiologi- cal ratio between chloride and sodium is below one. Hence, it is important to use a chloride-free source of sodium and
reduce salt to maintain this ratio. This has the effect of in- creasing the DEB around an optimal value of 240-250 mEq/kg avoiding an imbalance in the acid base equilibrium. Many feed manufacturers worldwide already use sodium sulphate, as a sodium source without chloride. The product contains 32% sodium, a higher concentration than sodium bicarbo- nate or sodium sesquicarbonate. Therefore, poultry producers will reduce the cost of sodium without chloride in the diet, using a FAMI-QS certified product. Compared to sodium bi- carbonate or sodium carbonate, sodium sulphate has a much lower acid binding capacity meaning that using sodium sul- phate limits the dietary buffering effect in the upper diges- tive tract. A lower feed buffering capacity improves protein digestibility and increases efficacy of any organic acid used.
Replacing sodium bicarbonate A scientific study was carried out last year at the internation- ally renowned Schothorst Feed Research in the Netherlands. The objective was to assess the effect of replacing sodium bi- carbonate by sodium sulphate on the performance of broilers fed a commercial European type diet. The trial also measured litter and faecal quality parameters, to evaluate the effect on health and welfare of birds. The feed formulation was based
Producers can
save money on the cost of sodi- um addition, while support- ing broiler per- formance and litter quality.
10 ▶ ALL ABOUT FEED | Volume 25, No. 10, 2017
PHOTO: SHUTTERSTOCK PHOTO: MARK PASVEER
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