@:Its not sin if we kill an animal to eat for they have been created for us.
I can find what GOD gave us to eat , from the following verse.
பின்னும் தேவன்: இதோ, பூமியின் மேல் எங்கும் விதைதரும் சகலவிதப் பூண்டுகளையும், விதைதரும் கனிமரங்களாகிய சகலவித விருட்சங்களையும் உங்களுக்குக் கொடுத்தேன், அவைகள் உங்களுக்கு ஆகாரமாயிருக்கக்கடவது. ஆதியாகமம் 1 :29
I think man added 'animals' to this menu , later.
Only domestic 'poor' animals , mostly non-attacking types , (not lion,tiger,elephant etc.)
That shows , eating animals & birds , is man's idea !
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@:They were created for offerings to the lord in oearly days and for the people of the lord.
Who ordered to stop this offering practice?......
Up to Jesus times it was there! Jesus himself insist the offering practice then and there.
Probably, it was discontinued due to man's convenience /inconvenience !