Although these are two individual components in the diet it is normal practice to balance them with common salt. High levels of sodium particularly in water causes scouring and poor growth rates. A low level of chloride in the ration can depress the growth rate and feed intake. Normal levels in the diet would be between 0.4 to 0.5% of salt although provided there is ad lib drinking water levels of up to 1% or more are well tolerated by the pig and often used at these levels to reduce tail biting and vice.