Weaned 9 heifers about 3 weeks ago . I'm feeding them about 3-4 lbs per once a day . 2 reasons for me to feed. (1) keep them growing, not to get them fat (2) they are at a different farm about 4 miles away . Not on my daily routes so if they get out they will come to the bucket .
The biggest problem with once a day feeding if you are feeding a grain based ration is fluctuations in rumen pH and acidosis. On saying that I wean my heifers in autumn and the ones I am keeping I put up the back on 100 acres which is mostly treed with some open areas over winter with poor quality grass but plenty of it. I feed them a grain mix about 1.5 kg once a day, enough to keep them gaining at .75 kg/day over winter so they will be a good weight for joining in spring. I have not had any trouble with feeding them just once a day.
I might add that a protein meal can be fed just twice a week that is 3 days ration together but just twice a week and will be just as effective as being fed daily.