The term "Zercher" is usually applied to squats, but it actually just refers to the position of the bar, which is held in the crook of the elbows. So you can do Zercher carries, Zercher deadlifts and, yes, even Zercher shrugs.
These feel a lot better to me than regular shrugs. My traps have grown significantly since doing them. Avoid leaning back or cheating. No bouncing the weight up.
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If you can't feel your lats, or your biceps take over, during pulldowns or pull-ups, do this drill first.
Tip: No-Straps Dumbbell Row
This style of row is great for back hypertrophy and for building your grip for the deadlift. Go for at least 20 reps, Kroc-row style.
Injured? Squat and Deadlift Anyway
Don't let an injury keep you from doing the big lifts. With these variations, you won't lose an ounce of muscle size or strength.
Tip: Test Your Lower Body Strength
Choose either the squat or deadlift and take this test. Do you measure up? Check it out.