Recommended changes to the talent build for Adonnenniel (http://www.wowarmory.com/character-talents.xml?r=Zul%27jin&n=Adonnenniel) follow. I'll break it down by tier.
Points in blade barrier are wasted unless you are tanking above your level already. Drop the 3 points in Blade Barrier (http://www.wowhead.com/?spell=55226). Subversion is a must, Butchery is not a talent point choice even though Blood DKs do not have a significant number of RP dumps.
In the second tier, Bladed Armor and Two-Handed Weapon specialization are a must for Blood DKs.
The hallmark of the Death Knight class is the Rune-based power system. There are 4 rune types - blood, frost, unholy, and death. The latter can be used in place of any other rune, which makes them an important part of play. Not having Death Rune Mastery (http://www.wowhead.com/?spell=50034) in the 3rd tier is a very bad idea. Put all 3 points into it. Take Dark Conviction for the bump to critical strikes. Rune Tap is fun, but that's a personal decision when leveling. I'll put points into this sample build.
Spell Deflection is a tanking talent and really only for certain fights. Drop it. Vendetta is a good leveling talent, but as with Improved Rune Tap, it's a personal decision.
Each DK build has a high damage strike. Heart Strike and Blood Strike are the strikes for Blood DKs. You have one point in Bloody Strikes. This should be maxed. Veteran of the Third War is a must have as well for the boost to Strength and Stamina. Mark of Blood is not really needed for leveling.
Bloody Vengeance tops off Dark Conviction. If you are grouping a lot, Abomination's Might is a must. Even if not, the 2% increase in Strength is nice.
Blood Worms are not a favorite of mine. You have no control, so you can pull aggro. If you are doing DPS, Hysteria is a must. Not having it is like a Retribution Paladin not using Avenging Wrath. Blood Aura is alright for groups; we'll take it as a filler.
Vampiric Blood is a tanking talent. Lose it. I am not a big fan of Sudden Doom, but you have points to spare. Max it and watch for the proc.
Heart Strike is a must. Why Heart Strike is chosen but Bloody Strikes was not is beyond me. Might of Mograine is a healthy boost to DPS. Take it.
Blood Gorged is not bad. I think the points while leveling are better spent elsewhere. Skip this tier.
Dancing Rune Weapon is the biggest RP dump for Blood DKs. Since you have Sudden Doom, you should have RP to spare. Take this.
This leaves you at level 60 like so: http://www.wowhead.com/?talent=jfVMqIcIcbRxzho
I would then put points into Frost for this built at 73: http://www.wowhead.com/?talent=jfVMqIcIcbRxzhoG0x0h