3Erickson P S,Trusk A M,Murphy M R.Effects of niacin source on epinephrine stimulation of plasma nonesterified fatty acid and glucose concen- trations,on diet digestibility and on rumen protozoal numbers in lactating dairy cows[J].Journal of Nutrition, 1990,120(12) : 1648 - 1653.
4Harms R H,Ruiz,Buresh R E,et rd.Research Note: Effect of niacin supplementation of a corn-soybean meal diet on perfomlance of turkey breeder hens[J].Poultry science, 1988,67 (2) : 336 - 338.
5Real D E, Nelssen J L, Unruh J A,et al.Effects of increasing dietary niacin on growth performance and meat quality in finishing pigs reared in two differ- ent environments[J] Journal of Animal Science, 2002,80 : 3203 - 3210.
6Whitehead C.Nicotinic acid in poultry nutrition[J].Feed Mix,2001,9 (1):32-34.