absolutely not

For comparison of produce, regular/golden (time):

BARN ANIMALS

Horse Hair -> 130t / 390t ( 3 days )

Alpaca Wool -> 130t / 390t ( 3 days )

Sheep Wool -> 120t / 360t ( 3 days )

Bull Horns -> 120t / 360t ( 3 days )

Cows Milk -> 40t / 120t ( 1 day ) Cheese/Butter raises milk up to 90t/260t per 2 pieces in 20 min.

COOP ANIMALS

Rooster Feather -> 60t / 180t ( 3 days )

Chicken Egg -> 20t / 60t ( 1 day ) Mayo raises chicken eggs up to 90t/140t per 2 pieces in 20 min.

Duck Feather -> 90t / 270t ( 3 days )

Duck Egg -> 30t / 90t ( 1 day ) Duck Mayo raises duck eggs up to 70t/200t per 2 pieces in 20 min.

Rabbit Wool -> 90t / 270t ( 3 days )

Capy Bristles -> 120t / 360t ( 3 days )

Potential Produce in 1 Season (28 days total)

Horse Hair and Alpaca Wool -> 1,170t / 3,510t ( 9 Harvests )

Sheep Wool and Bull Horns -> 1,080t / 3,240t ( 9 Harvests )

Cows Milk -> 1,080t / 3,240t ( 28 Harvests ) Cheese/Butter becomes 1,260t/3,640t (28/14 Harvest/Crafting) in 2hr 40m

Capy Bristles -> 1,080t / 3,240t ( 9 Harvests )

Duck Feathers and Rabbit Wool -> 810t / 2,430t ( 9 Harvests )

Rooster Feathers -> 540t / 1,620t ( 9 Harvests)

Duck Eggs -> 840t / 2,520t ( 28 Harvests ) Duck Mayo becomes 980t/2,800t (28/14 Harvest/Crafting) in 2hr 40m

Chicken Eggs -> 560t / 1,680t ( 28 Harvests ) Mayo becomes 1,260t/1,960t (28/14 Harvest/Crafting) in 2hr 40m

It's important to note that every 3rd season has the potential of 10 Harvests for critters that produce every 3 days. Assuming that you never miss a day feeding them. Also the above math is only the min/max you can earn per one ( 1 ) animal.

For maximizing both barn and coop profit you'll want Horses and Ducks with the perk "Barnyard Bounty II" because it will give you a small chance of producing an additional Horse Hair, Duck Egg, or Duck Feather. The only caveat is you have to feed them every day and if you miss one day in the 3 day period it takes for either to produce Horse Hair or Duck Feather then it resets the internal counter.

There is no room for error here especially if you buy massive amounts of hay or grass seed.

Yeah you could get Chickens and Cows with the first Barnyard Bounty perk and hope every chicken, cow, bull, and rooster will drop something extra, but there isn't a guarantee that you'll get the additional item. They only "sometimes" drop extra produce per the description. It just really depends on what your playstyle needs after all.

Not to mention that once you get the 5th tier perk "Eggstra" all Egg Laying animals will have a 50% chance of producing another regular quality egg if they're capable of laying Gold Eggs. That means ducks!! Ducks are essentially an investment over chickens, whose produce are worth significantly less.

Milling can give you a slightly higher profit but if you don't have the perks that reduce the mill time to zero you'll need to be prepared to spend many in-game hours at the mill.

Alternatively you could just fill your coops with Capybaras, this too is a very cool and valid thing to do and has nothing to do with the fact that they don't have an RNG related perk. Have you seen them? The devs implemented hot water springs for the 1.0 release, it's cute, they should have the oranges on their heads when they get into the water.

It's okay just focus on the serenity of the capybara.

Mind you this is the minimum that you can earn selling your critters goods, it's not taking into account the RNG or the crafting value each item has. I am not that mathpilled.

Recently I learned (from tumblr tag comments) that you can feed berries to your animals and some of the most ideal forageables come from bushes or palm trees. Each 'bush' node will give you 3 berries which are the Blueberries and Wildberries (Spring, 120 berries), Coconuts and Wild Grapes (Summer, 27 berries), Blackberries (Fall, 54 berries) and Wintergreen Berries and Glowberries (Winter, 117 berries).

Depending on how many animals you have the berries can either cover a portion of your animal's feed needs, or at least lighten how much money you have to spend on hay/seed. It would just take awhile to collect every node each time around the map.

Which since both Hay and Grass Seed both cost 50t a piece, that can quickly add up. Using 12 barn animals and 12 coop animals as an example! If you bought their feed every day it would work out to being -16,800t a season per building (-33,600t for both).....

More Math: 12 Animals per Building (continuing from above)

Milk Producing Cows -> 12,960t / 38,880t (regular/gold) Becomes -3,840t/22,080t if purchasing hay to feed One Building per Season.

Egg Laying Chickens -> 6,720t / 20,160t (regular/gold) Becomes -10,080t/3,360t if purchasing hay to feed One Building per Season.

Egg Laying Ducks -> 10,080t / 30,240t (regular/gold) Becomes -6,720t/13,440t if purchasing hay to feed One Building per Season.

Bristle Dropping Capys -> 12,960t / 38,880t (regular/gold) Becomes -3,840t/22,080t if purchasing hay to feed One Building per Season.

Feather Dropping Roosters -> 6,480t / 19,440t (regular/gold) Becomes -10,320t/2,640t if purchasing hay to feed One Building per Season.

Horses OR Alpacas -> 14,040t / 42,120t (regular/gold) Becomes -2,760t/25,320t if purchasing hay to feed One Building per Season.

Sheep OR male Cows -> 12,960t / 38,880t (regular/gold) Becomes -3,840t/22,080t if purchasing hay to feed One Building per Season.

Male Ducks OR Rabbits -> 9,710t / 29,160t (regular/gold) Becomes -7,080t/12,360t if purchasing hay to feed One Building per Season.

If Milling One Buildings Worth of Eggs or Milk.

Butter OR Cheese -> 15,120t/23,520 (regular/gold) Becomes -1,680t/6,720t if purchasing hay to feed One Building per Season.

Mayo (Chicken) -> 11,760t/23,520t (regular/gold) Becomes -5,040t/6,720t if purchasing seed to feed One Building per Season.

Duck Mayo -> 11,760t/33,600t (regular/gold) Becomes -5,040t/16,800t if purchasing seed to feed One Building per Season.

It will take a grand total of 56 hours for each when processing at the Mill without any time saving perks, or roughly 2.33 repeating days. How I mathed the above milled amounts: 28 days x 12 animals = 336 pieces / 2 craft req. = 168 pieces x sell price of processed goods. (Also the amount spent on hay, because... You are still!! Buying hay to collect the eggs/milk.) Of course mill time goes away with all the perks.

Yeah the only animals that have a sliver of a chance of bringing you out of the red are the ones that are a 100% guaranteed chance of giving gold items. Not even regular quality milled items will give you your money back, they certainly lessen the impact, but unless they are also gold quality you're going to lose money.

None of this accounts for the RNG of extra goods, or the small chance of gold produced items so you had better have some other source of income to feed those hungry critters. Otherwise you are going to be tesseraeless pretty quick.

SO HERE'S THE THING.....

It's Oops All Berries.

You can buy all the forageable common berries from Balor's Wagon for 25t a pop. The same price it would cost to buy some fast growing crop seeds that take 4 days to grow before you can feed them to your animals. Except Wild Berries.

Wild Berries can be purchased at Balor's Wagon for 15t a piece and be fed to your animals in place of Hay or Grass Seed. They will not give you very many Shiny Beads but we're working against the game here.

If you have one building filled to the max of 12 animals and you buy 28 days worth of Wild Berries from Balor's Wagon for each of them at 15t a piece the grand total cost is...

-5,040 tesserae!!!!!!

That's for enough berries to feed one season one buildings worth of animals!!!

All of the regular quality items that you have been struggling to make any sort of profit from through Hay/Seed are suddenly making you a little bit back every season. When they become gold quality producing critters then you are going to be making fat stacks of cash. KACHING.