Phosphorus additions to barley-soy rations. A preliminary report for growing-finishing rations
Harrold, R.L.; Johnson, J.N.; Zimprich, R.C.
North Dakota Farm Research 34(5): 26-27
In 2 experiments pigs weighing 49 and 48 lb initially were given diets based on barley and soya bean oilmeal with different amounts of P. Except that limestone was added to maintain the Ca:P ratio at 1.2:1 the diets were the same. In the first trial 48 pigs were given 0.1 or 0.2% extra P, 0.5 or 0.6% total P, and the gilts were kept on these diets through first pregnancy and lactation. Supply of P had no significant effect on gain, feed intake or feed efficiency.