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Feeding For Weight and Temperament - A Guide

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I was going to post this with my beginner guide, but decided that it needed its own thread.

Updated June 6, 2024 to reflect the new layout.

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Feeding on HWO can be a somewhat complicated undertaking but is also very important. What you feed your horse controls both how much it weighs and what temperament it displays.

First off: If you are not going to compete your horse you don't need to worry about weight or temperament. A horse will suffer no ill effects from being too fat or too thin, and it will not die if it is not eating enough. At the moment the only things that are affected by weight and temperament are a horse's competition scores.

Weight
HWO has seven different weight classes: Very Fat, Fat, Moderately Fleshy, Moderate, Moderately Thin, Thin, and Poor. Horses from moderately fleshy to moderately thin are generally considered to be at a good weight, with moderate seen as the ideal for unspecialized horses.

Horses specialized for certain disciplines will want to be in certain weight classes. For example, race horses benefit from a Moderately Thin weight rating whereas a dressage horse will benefit from a Moderately Fleshy rating. If you are not sure what you want to compete your horse in, or you want it to compete in multiple different disciplines, Moderate is the way to go. You can adjust a horse's weight by feeding it different amounts.


Temperament
HWO has five different temperaments: Bombproof, Calm, Even-Tempered, Spirited, and High Strung. You can find your horse's temperament in its "Attribute" section, right under its build. Each discipline has a different temperament that is best suited for it. Continuing with our racing and dressage examples, race horses perform best at High Strung where as dressage horses tend to perform better at Even-Tempered. If you're not sure where you want to keep your horse it's okay to leave it either Bombproof or High Strung, the two easiest temperaments to maintain, though it may not score as well.

Please also that not all horses can change temperament. Some horses are born one temperament and will stay that way for their entire life no matter what you try to change it. That's just the way the game works. Temperament is also heritable between horses - meaning that parents pass down some of their temperament to their children. If a horse is stuck at bombproof there is a higher chance that its offspring will also be stuck at bombproof. This information is incorrect as of the recent temperament changes. For now, every horse is able to change its temperament. It is possible that stuck temperaments will be re-implemented at a later date.


Feeding to Change Weight and Temperament
We'll start with weight, as changing a horse's weight is much simpler than changing its temperament. Each horse has a "Feeding" section on its page. On the current layout, this section can be found on the right under the "Training" or "Competition" tabs. On the old layout, this section is located in the left-hand bar under the Attributes section. (The old layout is no longer supported by this guide.)

In a horse's Feeding section, under what your horse is eating, is a percentage next to the heading "Daily Energy":

Image
This percentage is what will change your horse's weight. Feeding any percentage lower than 100% will cause a horse to lose weight. Feeding any percentage greater than 105% will cause a horse to gain weight. Percentages from 100%-105% should allow a horse to maintain its weight.

If your horse is eating 100% or greater from the grass in a pasture you will need to either mow the pasture or put the horse in a barn to get it to lose weight.

There are some caveats to the above. Any horse that is younger than five years is still growing and will require more food to maintain its proper weight. You may find it dropping weight brackets (from moderate to moderately thin, for example) even if eating 100-102% for daily energy. This is normal. Simply bump up its food for a few days and it should gain weight again. Pregnant mares will also have changing food needs during gestation, requiring greater amounts of food near the end of gestation in order to maintain weight. Again, this is normal.

Different horses eat different amounts. Notice that within the Feeding box there is a line labelled "Max Feed":
IMPORTANT NOTE: "Max Feed" has been changed to read "Max Qty" since this image was taken.

Image

This horse is only able to eat, at most, 15kg of food per day. This is important to keep in mind when selecting what to feed our horses, because each feed only supplies a certain amount of energy per weight.

While on pasture, the above horse gets 42% of his energy from grass, so the remaining 60% needs to come from something else. Below is a table of the weight of the food that this horse would need to eat to reach that energy level for each different food:

FeedWeight of feed to reach 60% energy
Hay19.4kg
Alfalfa Hay20.8kg
Alfalfa Cubes19kg
Yellow Corn6kg
Oats8kg
Sweet Feed6.2kg
Performance Mix5.7kg
Weight Gain Mix4kg

As you can see, you'd need to feed a lot of hay to get this horse up to full energy, and it just can't eat that much! On the other hand, feeding him weight gain mix will keep us comfortably within his maximum. If you have selected a feed amount that would go over your horse's maximum (aka, you'd be feeding them more than can fit in their stomach) its food weight boxes will turn red as a warning. Like this:

Image


When you see this, your horse will not have full energy or gain weight, no matter how high you set the value, because your horse simply can't eat that much! If you want your horse to gain weight, their Feeding box should look something like this:
Image
Blue circle: How much your horse needs to eat of your chosen food to reach the percentage you have selected. This is now labeled Quantity instead of Regular Feed.
Orange circle: How much food your horse can eat per day. This is now labeled Max Qty. instead of Max Feed.
Green circle: How much energy your horse would be getting from what it is eating.

There is no red in either the blue circle or the orange circle, and the green circle is greater than 105%. So the horse in the above example will gain weight.

The best way to get a handle on feeding values is to go to one of your horses and play around yourself to see what does what.


Now that we have a handle on how much to feed a horse, lets take a look at how feeding effects temperament. In the feeding section you will see three bars labelled Protein, Fiber, and Sugar.

Image

Each of these has different effects on temperament, and each feed type fills each bar a different amount. Here's a breakdown of what these three things do:

ProteinDoes not affect temperament itself, but increases the effect of fiber and sugar.
FiberLowers a horse's temperament. UPDATE Fiber does not affect a horse's temperament! Sugar is the only thing that controls temperament.
SugarIncreases or decreases temperament, based on how high the green bar is.
So if you have a High Strung horse and want to lower its temperament you will want to feed it a lot of fiber and if you have Bombproof horse and want to increase its temperament you will want to feed it a lot of sugar. If you want your horse to maintain a specific temperament you should feed it as close to an even mix of fiber and sugar as you can. This information is not correct!

Correct information on changing temperament:
How much sugar your horse is eating determines its temperament. If you have a High Strung horse and want to lower its temperament, you need to lower its sugar intake. If you have a Bombproof horse and want to raise its temperament, you need to increase its sugar intake. Whether or not your horse is eating the right amount of sugar depends on the green bar and the blue bar. To increase temperament, the green bar should extend to the right of the blue bar. To decrease temperament, the green needs to stay to the left of the blue bar. To maintain a horse at its current temperament, the green bar should end as close to the middle of the blue bar as possible.


Each feed has a different makeup of protein, fiber, and sugar. Grass from pasture has the highest fiber content, lowest sugar content, and is the best place to keep your horse if you want to lower its temperament. In contrast, if you want a horse to increase its temperament (or to maintain its temperament at anything other than Bombproof) it's usually best to keep it in a barn.

Here's a breakdown of what each feed gives a horse:


FeedProteinFiberSugarVisual (Current Layout)
HayLowVery HighVery LowImage
Alfalfa HayModerateVery HighLowImage
Alfalfa CubesModerateExtremely HighExtremely LowImage
Yellow CornExtremely LowExtremely LowExtremely HighImage
OatsVery LowVery LowExtremely HighImage
Sweet FeedVery LowLowExtremely HighImage
Performance MixHighVery LowHighImage
Weight Gain MixExtremely LowExtremely LowVery HighImage
Note: The visuals above were taken if feeding the horse 100% of that particular type of feed. Feeding lower amounts will fill the bar less than in the above image.

Looking at the visuals you may have noticed a blue bar. This blue bar usually doesn't matter much, but it's important for changing temperament. If you want to increase a horse's temperament you need to fill the sugar bar to at least the blue bar., and have the fiber bar be smaller than the sugar bar. In the above table, the settings for Yellow Corn, Oats, Sweet Feed, Performance Mix, and Weight Gain Mix would all increase a horse's temperament. To decrease a horse's temperament you need the fiber bar to at least the blue bar, and have the sugar bar to be to the left of the blue bar. In the above table the settings for Hay, Alfalfa Hay, and Alfalfa Cubes would all decrease a horse's temperament.

If you want to keep a horse's temperament where it is, you'll want their protein, fiber, and sugar to look something like this:

Image


Notice the even levels of fiber and sugar. However, this will not guarantee that your horse will stay at it's current temperament. Even at equal levels many horses will still fluctuate one way or another, but the equal levels will slow that progression. Just keep an eye on your horse and adjust the feed levels as needed. The above still works, but only because the sugar is in the correct place. Different fiber and protein levels would not affect the temperament.
Last edited by Silverine on Fri Apr 25, 2025 4:48 pm, edited 8 times in total.
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Silverine Offline
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Re: Feeding For Weight and Temperament - A Guide

Post by Silverine »

Solutions to Common Problems
I'm feeding my horse 400% but it won't gain weight!!!

So you have your horse in a barn, are feeding it a bunch of stuff, and still can't get it to gain weight. Believe it or not this is a common problem. It stems from a misunderstanding of the feeding system.

First, does your horse's feed box look like this?
Image
If so, notice the red boxes next to Quantity and Max Qty. Those red boxes mean that your horse can't eat that much. No matter how much you try to give it, it just doesn't have that much room in its stomach! Fixing this is simple. First off, take off any and all feeds that you have your horse on so that its feeding box looks like this:
Image
Next, select Weight Gain Mix and set the amount to 100%, like so:
Image
Notice that we do not have any red boxes by Regular Feed or Max Feed. Now, select Performance Mix and set the amount to 25%, like so:
Image
Still no red boxes, meaning that the horse will be perfectly capable of eating this much food. LEAVE YOUR HORSE AT THIS COMBINATION UNTIL IT IS AT THE APPROPRIATE WEIGHT. The weight gain will not be fast, but you will notice your horse's weight going up each turn. Once it is where you want it to be only take off the performance mix. Leaving the horse at 100% weight gain mix will keep its weight stable at wherever it is when you remove the performance mix.

Using this system your horse will gain weight slowly and steadily.




My horse won't lose weight!!!

Is your horse in a pasture? If so, it's possible the pasture is keeping it fat. Try moving it to a barn. If you can't move your horse to a barn, mow your pasture and make sure that the amount of grass and other food your horse is eating add up to less than 100%.

Is your horse in a barn? If so, is it being fed in that barn? If it has any food in its feed box try removing the food.

But my horse is in a barn and not eating food but still won't lose weight!
This is a known issue with the game. Some horses have a bug where they simply can't lose weight once they hit a certain point. Some players have had luck with keeping the horse in a barn and setting its feed to 95% Yellow Corn, but this hasn't worked for everyone.

In the end, don't worry if you can't get your horse to lose weight. Some horses just can't, and your horse's health will not be negatively affected by being fat. The fat horses won't show as well in some disciplines, but are plenty useful in other areas.
Last edited by Silverine on Tue Mar 11, 2025 12:11 pm, edited 2 times in total.
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Soaring Hooves Offline Visit My Farm Visit My Farm Joined: Thu Nov 21, 2019 1:09 am Posts: 3205

Re: Feeding For Weight and Temperament - A Guide

Post by Soaring Hooves »

Thank you for this, it's very helpful!
Silverine wrote:I was going to post this with my beginner guide, but decided that it needed its own thread.
Feeding on HWO can be a somewhat complicated undertaking but is also very important. What you feed your horse controls both how much it weighs and what temperament it displays.

First off: If you are not going to compete your horse you don't need to worry about weight or temperament. A horse will suffer no ill effects from being too fat or too thin, and it will not die if it is not eating enough. At the moment the only things that are affected by weight and temperament are a horse's competition scores.

Weight
HWO has seven different weight classes: Very Fat, Fat, Moderately Fleshy, Moderate, Moderately Thin, Thin, and Poor. Horses from moderately fleshy to moderately thin are generally considered to be at a good weight, with moderate seen as the ideal for unspecialized horses.

Horses specialized for certain disciplines will want to be in certain weight classes. For example, race horses benefit from a Moderately Thin weight rating whereas a dressage horse will benefit from a Moderately Fleshy rating. If you are not sure what you want to compete your horse in, or you want it to compete in multiple different disciplines, Moderate is the way to go. You can adjust a horse's weight by feeding it different amounts.


Temperament
HWO has five different temperaments: Bombproof, Calm, Even-Tempered, Spirited, and High Strung. You can find your horse's temperament in its "Attribute" section, right under its build. Each discipline has a different temperament that is best suited for it. Continuing with our racing and dressage examples, race horses perform best at High Strung where as dressage horses tend to perform better at Even-Tempered. If you're not sure where you want to keep your horse it's okay to leave it either Bombproof or High Strung, the two easiest temperaments to maintain, though it may not score as well.

Please also that not all horses can change temperament. Some horses are born one temperament and will stay that way for their entire life no matter what you try to change it. That's just the way the game works. Temperament is also heritable between horses - meaning that parents pass down some of their temperament to their children. If a horse is stuck at bombproof there is a higher chance that its offspring will also be stuck at bombproof.


Feeding to Change Weight and Temperament
We'll start with weight, as changing a horse's weight is much simpler than changing its temperament. Each horse has a "Feeding" section on its page, located in the left-hand bar under the Attributes section. In this section, under what your horse is eating, is a percentage next to the heading "Daily Energy":
Image
This percentage is what will change your horse's weight. Feeding any percentage lower than 100% will cause a horse to lose weight. Feeding any percentage greater than 105% will cause a horse to gain weight. Percentages from 100%-105% should allow a horse to maintain its weight.

If your horse is eating 100% or greater in a pasture you will need to either mow the pasture or put the horse in a barn to get it to lose weight.

There are some caveats to the above. Any horse that is younger than five years is still growing and will require more food to maintain its proper weight. You may find it dropping weight brackets (from moderate to moderately thin, for example) even if eating 100-102% for daily energy. This is normal. Simply bump up its food for a few days and it should gain weight again. Pregnant mares will also have changing food needs during gestation, requiring greater amounts of food near the end of gestation in order to maintain weight. Again, this is normal.

Different horses eat different amounts. Notice in the box that there is a section labelled Max Feed:
Image
This particular horse is only able to eat, at most, 19.4kg of food per day. This is important to keep in mind when selecting what to feed our horses. Because each feed only supplies a certain amount of energy per weight.

While on pasture, the above horse gets 54% of his energy from grass, meaning that he needs to get 50% of his energy from a secondary source in order to maintain his weight. Here is table of the weight of the food he would need to eat to reach that energy level for each different food:
FeedWeight to reach 50%
Hay35.5kg
Alfalfa Hay38kg
Alfalfa Cubes34.7kg
Yellow Corn10.9kg
Oats14.6kg
Sweet Feed11.4kg
Performance Mix10.3kg
Weight Gain Mix7.3kg
As you can see, you'd need to feed a lot of hay to get 50% of this horse's energy from it and he just can't eat that much! On the other hand, feeding him weight gain mix will keep us comfortably within his maximum. If feeding a horse a chosen amount would go over its maximum allowed feed your weight boxes will turn red as a warning. Like this:
Image
When you see this, your horse will not have full energy or gain weight, no matter how high you set the value, because your horse simply can't eat that much!

The best way to get a handle on feeding values is to go to one of your horses and play around yourself to see what does what.


Now that we have a handle on how much to feed a horse, lets take a look at how feeding effects temperament. In the feeding section you will see three bars labelled Protein, Fiber, and Sugar.
Image
Each of these has different effects on temperament, and each feed type fills each bar a different amount. Here's a breakdown of what these three things do:
ProteinDoes not affect temperament itself, but increases the effect of fiber and sugar.
FiberLowers a horse's temperament.
SugarIncreases a horse's temperament.
So if you have a High Strung horse and want to lower its temperament you will want to feed it a lot of fiber and if you have Bombproof horse and want to increase its temperament you will want to feed it a lot of sugar. If you want your horse to maintain a specific temperament you should feed it as close to an even mix of fiber and sugar as you can.

Each feed has a different makeup of protein, fiber, and sugar. Grass from pasture has the highest fiber content and is the best place to keep your horse if you want to lower its temperament. In contrast, if you want a horse to increase its temperament (or to maintain its temperament at anything other than Bombproof) it's best to keep it in a barn.

Here's a breakdown of what each feed gives a horse:
FeedProteinFiberSugarVisual
HayLowVery HighVery LowImage
Alfalfa HayModerateVery HighLowImage
Alfalfa CubesModerateExtremely HighExtremely LowImage
Yellow CornExtremely LowExtremely LowExtremely HighImage
OatsVery LowVery LowExtremely HighImage
Sweet FeedVery LowLowExtremely HighImage
Performance MixHighVery LowHighImage
Weight Gain MixExtremely LowExtremely LowVery HighImage
Note: The visuals above were taken if feeding the horse 100% of that particular type of feed. Feeding lower amounts will fill the bar less than in the above image.

Looking at the visuals you may have noticed a blue bar. This blue bar usually doesn't matter much, but it's important for changing temperament. If you want to increase a horse's temperament you need to fill the sugar bar to at least the blue bar, and have the fiber bar be smaller than the sugar bar. In the above table, the settings for Yellow Corn, Oats, Sweet Feed, Performance Mix, and Weight Gain Mix would all increase a horse's temperament. To decrease a horse's temperament you need to fill the fiber bar to at least the blue bar, and have the sugar bar be smaller than the fiber bar. In the above table the settings for Hay, Alfalfa Hay, and Alfalfa Cubes would all decrease a horse's temperament.

If you want to keep a horse's temperament where it is, you'll want their protein, fiber, and sugar to look something like this:
Image
Notice the even levels of fiber and sugar. However, this will not guarantee that your horse will stay at it's current temperament. Even at equal levels many horses will still fluctuate one way or another, but the equal levels will slow that progression. Just keep an eye on your horse and adjust the feed levels as needed.
Claudebot
Poponover Offline Visit My Farm Visit My Farm Joined: Fri Feb 19, 2021 5:46 pm Posts: 14

Re: Feeding For Weight and Temperament - A Guide

Post by Poponover »

I finally figured out what I was doing wrong with my first barn. Thank you!
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Nightwillow Offline Visit My Farm Visit My Farm Joined: Wed Feb 16, 2022 11:59 pm Posts: 2

Re: Feeding For Weight and Temperament - A Guide

Post by Nightwillow »

Thank you Silverine, this is so helpful!
Claudebot
Gabby Woodlark Offline Visit My Farm Visit My Farm Joined: Fri May 07, 2021 4:39 pm Posts: 1699

Re: Feeding For Weight and Temperament - A Guide

Post by Gabby Woodlark »

I would like to bump this up :D

-Gabbs
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Diamond Filly Offline Visit My Farm Visit My Farm Joined: Mon Dec 26, 2022 6:02 pm Posts: 1484

Re: Feeding For Weight and Temperament - A Guide

Post by Diamond Filly »

Silverine wrote:-
Do you have a table or something on what is the highest temperament and what is the lowest? I'm trying to figure out what feed to feed my horse to get his temperament to Spirited.
Horse link: https://www.horseworldonline.net/horse/profile/3606725
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Silverine Offline
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PremiumPremium Visit My Farm Visit My Farm Joined: Wed May 17, 2017 3:13 am Posts: 1909

Re: Feeding For Weight and Temperament - A Guide

Post by Silverine »

Diamond Filly wrote:
Silverine wrote:-
Do you have a table or something on what is the highest temperament and what is the lowest? I'm trying to figure out what feed to feed my horse to get his temperament to Spirited.
Horse link: https://www.horseworldonline.net/horse/profile/3606725
I don't but I'm sure there's one somewhere in BlackOak's links.

Your horse is currently at High Strung, which is the highest temperament. Spirited is one below that. So he needs more fiber and less protein. The easiest way to achieve this is in a pasture.

As Spirited is in the middle of the spectrum rather than at one of the ends you will not be able to keep a horse there indefinitely unless it is frozen. You'll need to keep an eye on his temperament for when it dips too low (Even-Tempered) or too high (High Strung) and adjust accordingly.
Claudebot
Diamond Filly Offline Visit My Farm Visit My Farm Joined: Mon Dec 26, 2022 6:02 pm Posts: 1484

Re: Feeding For Weight and Temperament - A Guide

Post by Diamond Filly »

Silverine wrote:
Diamond Filly wrote: Do you have a table or something on what is the highest temperament and what is the lowest? I'm trying to figure out what feed to feed my horse to get his temperament to Spirited.
Horse link: https://www.horseworldonline.net/horse/profile/3606725
I don't but I'm sure there's one somewhere in BlackOak's links.

Your horse is currently at High Strung, which is the highest temperament. Spirited is one below that. So he needs more fiber and less protein. The easiest way to achieve this is in a pasture.

As Spirited is in the middle of the spectrum rather than at one of the ends you will not be able to keep a horse there indefinitely unless it is frozen. You'll need to keep an eye on his temperament for when it dips too low (Even-Tempered) or too high (High Strung) and adjust accordingly.
Okay, thank you!
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Silverine Offline
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Re: Feeding For Weight and Temperament - A Guide

Post by Silverine »

I have updated this guide to include images using the new layout.

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