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 https://www.ncbi.nlm.nih.gov/pubmed/?term=MK-4+in+chicken+liver

Food Nutr Res. 2012;56. doi: 10.3402/fnr.v56i0.5380. Epub 2012 Apr 2.

Dietary intake of menaquinone-4 may determine hepatic and pancreatic menaquinone-4 in chickens.

Askim M¹, Haug A, Gadeholt G. Abstract

OBJECTIVE:

The aim of this study was to determine the biological effects of natural dietary intake
(1) of vitamin K as phylloquinone (K(1))  and menaquinone-4 (MK-4)
(2) and a control diet also containing menadione (K(3)) on levels of K(1)
and  (K2) total MK-4 (menaquinone-4) and   menaquinone-4-2,3-epoxide (MK-4O))
in liver and pancreas, and on femur bending resistance in a fast-growing animal model.

DESIGN:

Chickens were fed four wheat-based diets from day 11 to day 22 after hatching. The diets contained different combinations of fat sources:
 rapeseed oil, 
 animal rendered fat, 
soybean oil and 
hydrogenated soybean oil.
 Concentration of K(1) in the three experimental diets was 120 ng/g
 whereas MK-4 levels were 23, 52 and 63 ng/g respectively.
 The control diet contained 157 ng K(1)/g, 75 ng MK-4/g and 2.250 ng K(3)/g.

RESULTS:

Growth rates and femur strength confirmed adequate supply of nutrients and vitamin K in the test groups. There were no significant differences in femur bending resistance among the test groups,
 but these were higher than the control.
 K(1), MK-4 and MK-4O were found in liver.
 In pancreas, mainly MK-4O was found with small amounts of MK-4, but none had content of K(1).
 In the test groups the hepatic levels of MK-4 and MK-4O reflected the dietary intake of MK-4.

CONCLUSION:

The chickens were in good health with good bone resistance without supplements of K(3) in the feed, but at least a natural content of 23 ng MK-4/g feed.
Liver and pancreas appears to use MK-4 in different ways.

KEYWORDS:

Menaquinone-4; chicken; diet; liver; pancreas