I am wondering where in the world you are situated. Is it even possible to obtain blood from a slaughter house? Isn't it hedged about with a vast number of public health regulations?

@Floral, I am in Africa.

I have not ventured so I havent been told about the public health regulations. But nevertheless, I believe I can get it

Blood isn't an "activator". Compost activators add bacteria or fungus that will propagate and consume the ingredients. Blood doesn't have this; rather, it would be a very high nitrogen component. Adding it to a mix that already had an ideal C:N ratio would throw it out of balance. You can definitely use it in compost, but it must be countered with a generous addition of dry carbon material like straw or shredded leaves.

Thanks to all. I will rather make the blood meal now that I have seen easier ways to do so.

Let me share it here for others - Easiest way to make blood meal:

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BLOOD MEAL PRODUCTION

Estimated yield of blood meal from fresh blood

CATTLE - 5 parts fresh blood makes 1 part blood meal powder

PRODUCTION BY DRYING

1. Cook fresh blood in a tank to coagulate it

2. After cooling, drain the liquid which collects on top

3. Break up and spread the coagulum on a tarpaulin or plastic sheet to dry

4. Or place the coagulum in a solar dryer to dry.

5. The dry stuff can be beaten or blended into powder.

6. Blood meal is ready, rich in Nitrogen = 13.25%, Phosphorus = 1.0%, KPotasium = 0.6%

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Hope this helps somebody who is afraid of making his own blood meal

I would use directly in the garden. Blood only provides N, and half of it volatilizes in the composting process. Very wasteful, although I understand the constraints of the OP. Ideally, to minimize waste, one would mix it with saw dust or straw and then bury it in the garden.

@Glib, i have abandoned the idea of using it directly. I have settled to make blood meal first (1kg blood meal from 50kg fresh cattle blood).

This way, I can get reasonable Nitrogen

Rather than go to the effort of the coagulating and cooking - which REEKS as you do it, compost it with sawdust or fine wood chips. About 4 parts by volume for every 1 part of blood, mix it and then cover it with 6 inches or so of plain wood chips.

Keep layering like this in a 3-sided bin.

In about 6 months you should have decent compost.

6 months? LoL. Does anybody has such time in this day and age?

Thanks anyway. I will rather do the meal

6 months, during which you do NOTHING to the pile, just let it sit.

One of the USA's states composts entire elk (larger than an Eland or Zebu bull) this way, just buried in sawdust piles.

Instead of boiling the fresh blood I simply mix it with wood ash and let it dry.

Anyone thinks this is wrong way of doing it?

I mix it with wood ash.

Seems it does the trick