I learnt how to do this from 'lamb survival' by david henderson. It is a 20% glucose injection into the peritoneal cavity done as last chance for lambs older than 5-6 hours than are severely cold. If they don't get any sugar in them before warming they willl die of convulsion from lack of sugar as their metabolic rate increases. They can't digest anything when too cold. I only use it when I know they have been too long cold with no intake. It has saved some that were already so cold you could barely tell if they were breathing and the heartbeat is really slow. I use a 19 gage by 1 in needle ,hold the lamb hanging by its front feet, place the needle 1 cm to the side and 2.5 cm below the cord aim it at the tail and the insert it all the way and slowly inject 20cc per kg of sterile solution.It has to be at body temp so is mixed by using 50% dextrose diluted with same amount of boiled water. I only use it as last resort on lambs that are completely limp and non responsive that can't be stomach tubed until they can hold their head up.I guess because our temperatures here are really cold and first lambers often don't come in the barn to lamb when they surprise me.After they are given this they go into a warming box until their temp comes up to the point they are active and can stand. If they can nurse,they do that otherwise then I milk the ewe and stomach tube feed the first feeding and then make sure they know how to nurse before I leave them with mom.