The effect of age on heat tolerance in cattle as determined by the whole body 40K and nitrogen retention

A note on the metabolism of ca, P, Mg, Na and K by pigs growing at a high ambient temperature

Two levels of feeding were offered at each of two air temperatures, 25° or 33°C, to pigs while they grew from 20 to 70 kg live weight; two pigs were subjected to each of the four treatments. Significant increases occurred in the urinary excretion of Ca and K by the two pigs fed on the higher level and exposed to 33°C. However these effects could not be related in an obvious way to the lameness which developed in the latter pigs.