good to know. so there'll be about 16mg elemental zinc in that, i imagine. not sure how bioavailable it is though..
A Comparison of the Bioavailability of Three Dietary Zinc Sources Using Four Different Physiologic Parameters in Dogshttp://jn.nutrition.org/content/128/12/2809S.full
"...Zn from ZO, however, has recently been shown to be of relatively low bioavailability
relative to other dietary sources and prone to antagonistic reactions with other dietary nutrients
(Baker and Ammerman 1995, Lowe et al. 1994, Lowe and Wiseman 1997
Comparative absorption of zinc picolinate, zinc citrate and zinc gluconate in humans http://www.ncbi.nlm.nih.gov/pubmed/3630857
"The comparative absorption of zinc after oral administration of three different complexed forms was studied in 15 healthy human volunteers in a double-blind four-period crossover trial. The individuals were randomly divided into four groups. Each group rotated for four week periods through a random sequence of oral supplementation including: zinc picolinate, zinc citrate, and zinc gluconate (equivalent to 50 mg elemental zinc per day) and placebo. Zinc was measured in hair, urine, erythrocyte and serum before and after each period. At the end of four weeks hair, urine and erythrocyte zinc levels rose significantly (p less than 0.005, p less than 0.001, and p less than 0.001) during zinc picolinate administration. There was no significant change in any of these parameters from zinc gluconate, zinc citrate or placebo administration. There was a small, insignificant rise in serum zinc during zinc picolinate, zinc citrate and placebo supplementation. The results of this study suggest that zinc absorption in humans can be improved by complexing zinc with picolinic acid
so, zinc picolinate seems to be the best but to date i haven't found any myself (i don't go hunting regularly or anything). i've had to be content with the considerable gains i was able to make using zinc citrate.
query: have you historically eaten a fair amount of bread/grain products?