Claude guesses 2-3 calves
Some quick-mafs.Assuming the use of a high milk yield breed like Holstein Friesian cows.18KL per lactation: https://www.australiaslivestockexporters.com/holstein-fresians-dairy-cattle/About 217 ml of milk, 23.6g of cheese (equiv to 236ml milk) and 21.4g of yoghurt (about 21.4ml of milk) are consumed per Australian per day: https://www.statista.com/statistics/1143391/australia-dairy-mean-daily-grams-per-capita-by-food-subgroup/ = (approx) 474ml = 0.47LAustralians live about 83 years, approx 30k days.30kDays * 0.47L/Day = 14100L of milk over a lifetime. Or a bit less than one calf.The average Holstein cattle has parity of < 2.7 (https://pmc.ncbi.nlm.nih.gov/articles/PMC8369829/). So we can estimate something like one third of a dairy cow per person, and a little less than one calf.
Is the question how many calf-equivalents map to current dairy consumption, or to the counterfactual dairy consumption of someone trying to reduce other animal products without going vegan?
EDIT: Nvm, this dataset was of a niche religious group (The seventh day adventists), I should’ve read more throughly before commenting.Assuming no major dietary differences between vegetarian converts, and lifelong vegetarians, it appears that they consume less dairy by about a half: https://pmc.ncbi.nlm.nih.gov/articles/PMC4232985/#!po=39.8438So, assuming that someone moves to the mean lacto-ovo vegetarian diet, you can assume about one half calf less over a lifetime.
Claude guesses 2-3 calves
Some quick-mafs.
Assuming the use of a high milk yield breed like Holstein Friesian cows.
18KL per lactation: https://www.australiaslivestockexporters.com/holstein-fresians-dairy-cattle/
About 217 ml of milk, 23.6g of cheese (equiv to 236ml milk) and 21.4g of yoghurt (about 21.4ml of milk) are consumed per Australian per day: https://www.statista.com/statistics/1143391/australia-dairy-mean-daily-grams-per-capita-by-food-subgroup/ = (approx) 474ml = 0.47L
Australians live about 83 years, approx 30k days.
30kDays * 0.47L/Day = 14100L of milk over a lifetime. Or a bit less than one calf.
The average Holstein cattle has parity of < 2.7 (https://pmc.ncbi.nlm.nih.gov/articles/PMC8369829/). So we can estimate something like one third of a dairy cow per person, and a little less than one calf.
Is the question how many calf-equivalents map to current dairy consumption, or to the counterfactual dairy consumption of someone trying to reduce other animal products without going vegan?
EDIT: Nvm, this dataset was of a niche religious group (The seventh day adventists), I should’ve read more throughly before commenting.
Assuming no major dietary differences between vegetarian converts, and lifelong vegetarians, it appears that they consume less dairy by about a half: https://pmc.ncbi.nlm.nih.gov/articles/PMC4232985/#!po=39.8438
So, assuming that someone moves to the mean lacto-ovo vegetarian diet, you can assume about one half calf less over a lifetime.