> INMH the interesting questions is « what are the proteins options, considering the ressources of Indians/India? If your poultry is fed with soy you’ll have many times more proteins and other nutrients eating directly the beans instead of transforming them the eggs. However if your poultry find their food by themselves on a field, you have free eggs without input waste.
Just completely and utterly false, and reflects the poor understanding of diet and nutrition that is pervasive throughout India and in Indian culture. There's a reason why Indians have the highest rates of metabolic syndrome. I've basically shirked all of it, and my blood numbers, weight, etc are substantially better than my parents and my brother.
Firstly, chickens eat more than soy, and chickens (and animals in general) can turn undigestible, useless biomatter into actual food (such as ruminants digesting grass, and then humans drinking milk or eating the flesh). Using animals, you are able to use much less bio-matter to get an equivalent amount of calories and nutrition, simply because humans are terrible at digesting.
That being said, on to eggs. Eggs are an excellent source for protein and orders of magnitude better than soy when looking at both the amino acid profile as well as the protein / calories.
One hard-boiled egg contains about 70 calories and 6 g protein.
Meanwhile, you'd need 50g boiled soybeans to get 6g protein. However, Soy is less bio-available (about 90%), so you'd actually need to eat about 6.6 g protein or 60 g soybean, containing about 70 calories. So far so good, right?
Wrong. Because soy beans are low in essential amino acids like methionine. For an average adult you need about 1.3g methionine / day. This is 3 eggs or 210 calories.
Meanwhile, you need about 480 g of soybean to meet your methionine requirement, which is 830 calories.
If you analyze the Indian diet, you'll realize it's replete with these sorts of insane substitutions, where a perfectly good source of nutrition, whose protein profile matches exactly the human requirement, is substituted for a sub-par product. Obviously, since these are requirements, you'll see Indians compensate by simply eating more to make up for the deficiency. But eating these vegetarian sources of protein in the right amount to get to the required intake leads to insanely high calorie numbers, which is why diabetes, stomach fat, heart problems, etc are so prevalent in India. And it's also why Indians in India are shorter than the Indians in the diaspora despite Indians in India actually eating more calories (hence the weight).
And that's just calories and basic metabolism, we're not even talking body composition, which again suffers within India simply because the best sources of protein are eschewed due to moralizing. There's a reason why Indians, despite constituting 25% of the planet, do not constitute a large portion of world-class athletes and have low average rates of grip strength. It's an insanely self-inflicted pathology.