On gloss:

mambakni in sense "female bovine"
m1=b1 is a cow [an adult female bovine] of variety/breed b2 that has had calf/calves m2

In definition:

bakni
x1 is a cow/cattle/kine/ox/[bull/steer/calf] [beef-producer/bovine] of species/breed x2.
bakcatra
x1 kills bull/cow x2 by method x3.
bakrecpa'o
p1=r1 is a steak/beefsteak (flat cut of beef) from cow/cattle/kine/ox p2=r2=b1.
citfe'ibakni
b1=f1=c1 is a heifer [young female bovine/cow] of species/breed b2=f2 by standard f3=c2.
selbakni
x2=b1 is a cow/cattle/kine/ox/[bull/steer/calf] [beef-producer/bovine] of species/breed x1=b2.
sofybakni
x1=b1=s1 is a Soviet cow/cattle/kine/ox/[bull/steer/calf] [beef-producer/bovine] of species/breed x2=b2 and reflecting USSR/ex-USSR [Soviet] culture/nationality in aspect x3=s2.

In notes:

tabryjirna
j1=t1 is a/the horn [primitive type/predecessor of brass-wind/lip-reed musical instrument] cut from j2.
baknis
x1 is Taurus [constellation/astrological sign].