Thiamin and Magnesium Supplementation of All-Concentrate Diets for Feedlot Steers

Abstract

GnIcer, G. A. aNo MersrsoN, G. W. 1983. Thiamin and magnesium supplementation of all-concentrate diets for feedlot steers. Can. J. Anim. Sci. 63: l l7-13 I .Two experiments were conducted to determine the effect of: (1)

Effect of ammoniation on the preservation and feeding value of barley grain for growing-finishing cattle

“…The addition of thiamin to the diet had no other detectable influence on animal gains (Table 4) or carcass characteristics (Table 5) or on mean erythrocyte transketolase activity (Table 6). We had speculated, based on conclusions of Grigat and Mathison (1983), that percentage TPP effects of over 15% indicate a thiamin deficiency, and that a deficiency had existed in cattle fed ammonia-treated or moldy grain in a previous experiment (Mathison et al 1989a (Mathison et al 1989a), there is now reason to question this recommendation.…”

“…The decrease in digestibiliry related to feeding whole barley ( Grigat and Mathison (1983). No reason for this discrepancy is apparent.…”

Effects of Supplemental Thiamin on Growth Performance and Immune Function in Stressed Stocker Cattle

“…Conversely, Grigat and Mathison (1982) reported ADG and carcass weights were increased for thiamin-supplemented calves (1.9 mg thiaminkg diet) fed an all-concentrate, feedlot diet for 98d. But, when they repeated a similar study at a higher supplementation level (6.25 mg thiamin/ kg diet) on sale barn calves for 98d, there was no significant change in growth performance (Grigat and Mathison, 1983). In Experiment 1, there was a supplemental thiamin levelxday interaction (P<O.Ol) on supplement intake.…”

A Survey of the Thiamin Status of Growing and Fattening Cattle in Alberta Feedlots

“…The occurrence of thiamin deficiencies in all animals sampled including those from previous works (Grigat and Mathison 1982and Mathison , 1983, as measured by the TPP effect, could not be related to any ingredient(s) specific to the diets.…”

“…1) following preincubation with thiamin pyrophosphate (TPP effect) and 2-wk weight changes. However, two additional feeding trials (Grigat and Mathison 1983) Can. J.…”