well i know first hand that cow manure is very good fertiliser but only for flowering.....
''pissing'' the plants is also good for ready to consume Nitrogen (use only on emergencies, it worked for me one time with no problems of overfertilisation).....
just dilute a cup of warm piss on a previously sterilised 2 liter bottle of water.....
you can also use piss to create a source of co2 production (simply add 3-4 teaspoons of sugar in the bottle i described above)
other than that i agree with HARDON (hahahah) that you do not really need to fertilise the plants during vegetation if you grow them on soil.
finally what i would suggest to do (if your budget is low), is to buy a fertiliser for green plants and a flowering booster NPK:0-13-14, do the mixing and application during the flowering stage....start from 1/4 of strength and go gradually up to full strength (the recommended dosage on the bottle) towards the end of the flowering cycle.....however keep in mind that you will need to stop fertilising your plants 1-2 weeks prior harvest (usually 6-8 weeks for most strains) and start water them with ph-adjusted water up until harvest.....


NGOS


PS. i think i've read somewhere that cat shit is toxic, but i'm not sure!