Acidifiers and Buffercapacity

Young piglets do not secrete sufficient acid (HCl) in their stomach. The result is a low entrance barrier for pathogenic bacteria like Escherichia coli to enter the intestine. Additionally protein digestion in the stomach is low, because the stomach enzymes need a low pH for optimal function.

Piglet diets are therefore formulated to assist the piglet to reach a low pH in the stomach. A tool to measure how easy a piglet can reach a low pH, is the buffercapacity of the feed. The lower the buffercapacity of a feed, the easier a piglet can reach a low pH in the stomach.

Unfortunately the industry is using different methods to determine the buffercapacity. However the principle is similar and products showing a good effect in one method, will normally also show positive contributions in the other method. For this document, we use the method of Jasaitis et al. 1987 to show the influence of different acidifiers on the buffer capacity of the feed.

Table 1: Feed compositions and their corresponding Buffercapacity

  Control Acidified
Raw Material no acidifier Sanaphorce 104
maize 5 5
barley 45,5 45,5
wheat 18,92 17,67
soybean oil (fat) 1,98 2,21
lineseed 1 1
soybeans 3,31 3,35
whey powder 5,56 5,56
hipro soybeanmeal 12,5 12,5
premix 4,74 5,26
dicalciumphosphate 0,44 0,79
socium chloride 0,36 0,36
limestone 0,7 0
Sanaphorce 104 0 0,8
Buffercapacity (ABC-4) 506 465
Jasaitis et al. 1987

In Table 1, the first diet describes a piglet feed, with the percentage of ingredients when formulated without an acidifier. The buffercapacity of the feed is calculated at 506.

The second diet contains as acidifier Sanaphorce 104, a formula that is specially composed to have a strong effect on the buffercapacity in combination with strong antibacterial effect. This effect appears due to the acids in combination with reformulation of the diet. Sanaphorce 104 contains high level of highly available organic calcium. Due to this organic calcium, the need for limestone in the diet is reduced. For every kg of Sanaphorce 104 that is added to the diet, 1.5 kg / ton of limestone can be taken from the recipe. This diet contains 8 kg/ton of Sanaphorce 104 and therefore the 7 kg of limestone that were in the control diet can be left away. After reformulation of the diet, the buffercapacity is calculated at 465.