5Haydon K D, West J W, McCarter M N.Effect of dietary elec- trolyte balance on performance and blood parameter of grow- ing-finishing swine fed in high ambient temperatures[J].J Anita Sci, 1990, 68: 2400-2406.
6Neshiem M C.Interrelationship between dietary levels of sodium, chloride,and potassium[J].J Nutr, 1964, 84: 361.
7Patience J.The effect of sodium bicarbonate or potassium bicar- bonate on acid-base status and protein and energy digestibility in swine[J].Nutr Res, 1986, 6: 263-275.