The Adamic Covenenet “Genesis 3:14-19
And Jehovah God said unto the serpent, Because you have done this, cursed are you above all cattle, and above every beast of the field; upon your belly shall you go, and dust shall you eat all the days of your life: and I will put enmity between you and the woman, and between your seed and her seed: he shall bruise your head, and you shall bruise his heel. Unto the woman he said, I will greatly multiply your pain and your conception; in pain you shall bring forth children; and your desire shall be to your husband, and he shall rule over you. And unto Adam he said, Because you have hearkened unto the voice of your wife, and have eaten of the tree, of which I commanded you, saying, You shall not eat of it: cursed is the ground for your sake; in toil shall you eat of it all the days of your life; thorns also and thistles shall it bring forth to you; and you shall eat the herb of the field; in the sweat of your face shall you eat bread, till you return unto the ground; for out of it were you taken: for dust you are, and unto dust shall you return. “
Did not allow eating meat.
The Noahic Covenant allowed eating meat after the flood “Genesis 9:1-17
And God blessed Noah and his sons, and said unto them, Be fruitful, and multiply, and replenish the earth. And the fear of you and the dread of you shall be upon every beast of the earth, and upon every bird of the heavens; with all wherewith the ground teems, and all the fishes of the sea, into your hand are they delivered. Every moving thing that lives shall be food for you; as the green herb have I given you all. But flesh with the life thereof, which is the blood thereof, shall ye not eat. And surely your blood, the blood of your lives, will I require; at the hand of every beast will I require it: and at the hand of man, even at the hand of every man’s brother, will I require the life of man. Whoso sheds man’s blood, by man shall his blood be shed: for in the image of God made he man. And you, be ye fruitful, and multiply; bring forth abundantly in the earth, and multiply therein. And God spoke unto Noah, and to his sons with him, saying, And I, behold, I establish my covenant with you, and with your seed after you; and with every living creature that is with you, the birds, the cattle, and every beast of the earth with you; of all that go out of the ark, even every beast of the earth. And I will establish my covenant with you; neither shall all flesh be cut off any more by the waters of the flood; neither shall there any more be a flood to destroy the earth. And God said, This is the token of the covenant which I make between me and you and every living creature that is with you, for perpetual generations: I do set my bow in the cloud, and it shall be for a token of a covenant between me and the earth. And it shall come to pass, when I bring a cloud over the earth, that the bow shall be seen in the cloud, and I will remember my covenant, which is between me and you and every living creature of all flesh; and the waters shall no more become a flood to destroy all flesh. And the bow shall be in the cloud; and I will look upon it, that I may remember the everlasting covenant between God and every living creature of all flesh that is upon the earth. And God said unto Noah, This is the token of the covenant which I have established between me and all flesh that is upon the earth.
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Maybe Noah and his immediate family had a hard time adjusting to the meats.