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Help! Guinea pig has improved URI symptoms via antibiotics but is still losing weight, eating veggies but not eating hay

Skebudupobuuyada

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So for context I have a female guinea pig who is about 6.5 years old and 1.5 years ago she had exhibited severe signs of a URI and so I had to take her to get emergency care where she was hospitalized for a day and I took her home where she eventually fully recovered. Since then she's had a couple flare ups but it wasn't to the point where I had to hospitalize her, I would usually just get meds and she would fully recover, albeit not always linearly but eventually she would fully recover.

As of like 3 days ago, my parents noticed she was lethargic, not eating, and was clearly struggling to breathe because of her body movements and the noises she made as she breathed. Since I am an out of state college student, I am unsure if these symptoms truly started all of a sudden especially since in the past she would usually show symptoms before they got this severe. So I told my parents to bring her to the emergency exotics vet where she was hospitalized for a day, she was put in an oxygen chamber and her breathing improved. Additionally she also started eating a little, and pooping a little. Due to budget constraints (already spent around $1300, it would be another $500+ for another day of hospitalization), I decided to have my parents bring her home. The last time the vets weighed her, she weighed 970 grams, which was a 10 gram increase from the 960 grams she was when she was first brought in to the vets.

Over the last two days, I've had my parents separate her from her sister cage mate (who is healthy) so that we can closely monitor her eating/drinking and poops. She hasn't been eating hay like at all even when she was provided a pile of it (both timothy & softer orchard grass hay). But she still eats some veggies (very slowly), and occasionally drinks water but only if the bottle is put directly in front of her face because she isn't really moving much from her hidey house except for when she is physically bothered by my parents. She is being provided 40 ml of critical care everyday (20 ml for the two times during the day that she is given antibiotics for the URI) and vitamin C. But my main concern is that she is not eating her hay and pellets. As of tonight I had my parents syringe feed her water, poop soup of her healthy cage mate, and 20 ml more critical care from the usual 40 ml she would get. But she just weighed in at ~905 grams. Furthermore she has been pooping but it is very small and dry looking as well as being few and far in between. But just recently we gave her corn husks as a possible replacement for hay and thankfully she actually liked it so she ate it just as much as she would eat her normal veggies.

She still has some issues breathing, but not nearly as severely as before which might partly explain her lack of appetite. But I have just been scouring the internet for possible causes and I'm thinking it might be a bloating issue so she's also been receiving some massages and also hence why she got some poop soup. But I am wondering whether it might be something else and whether she should just keep eating corn husk as a replacement for hay right now and if there is anything else I could do to help her gain more of an appetite for hay and for food in general.
 
I’m sorry to hear this.

Corn husk is not a replacement for hay.
Fresh, dog and fox pee free, grass is a replacement for hay but you can only feed it in the quantities required once the gut has been prepared over many weeks. Giving fresh grass in an unprepared gut can cause them to become unwell.
And to add if you suspect she has bloat then she cannot eat any fresh grass or fresh veg at all at present.

A piggy who is struggling to breathe will struggle to eat. The need to breathe comes first, then the need to drink, then the need to eat.

As she is still losing weight she needs to be fed more critical care.
40ml is the minimum amount for survival but for weight maintenance she will need at least 60ml per day (it could be as much as 100ml per day). She could need to be fed every 3 hours, not just twice a day. Twice a day top ups are only suitable for a piggy who is recovering well and eating hay in larger quantities and the top ups are just for a boost.
Her poops being small and not many suggest not enough food intake.

If you think she has bloat then she needs to go back to the vet for diagnosis. If diagnosed the treatment is gut stimulants and pain meds.
You must also remove all veg from a bloated piggy. Feeding veg to a pig with bloat can make things worse.

Separating her from her foods does not allow for watching food intake. Weight checks are the only way to monitor food intake. Weight checks are weekly as part of routine care but daily (each morning) during a period of illness.
Separating them causes stress which can make recovery harder, and in some cases has the potential to permanently break a bond and mean they don’t go back together. Therefore we do not recommend separating.

I’ve added some guides below. I hope she feels better soon

Weight and Weight Loss Explained: BMI, Weighing, Poos and Feeding Support
All About Syringe Feeding and Medicating Guinea Pigs with Videos and Pictures
Digestive Disorders: Not Eating - Diarrhea - Bloat - GI Stasis (No Gut Movement)
 
Thank you for your insight, I didn't realize guinea pigs needed much more critical care. I believe the vets said to give 40 ml to my parents while also saying to make it watery so she would eat it more easily which might also contribute to even less nutritional value.

This makes me believe less that she has bloat because she exhibits only the symptoms of decreased appetite and her stomach looking oddly big in pictures but that might've been because of weight loss. Furthermore her stomach seemingly isn't firm or sound "hollow" when tapped.

In regards to separating her from her sister, is there a way to ensure she has all the food available to her? Because I did have her stay with her sister for a couple hours so that she didn't feel isolated but the healthy one would quite literally take a veggie from out my sick piggies mouth cuz she was eating a lot slower. Perhaps keeping them together but separating them when feeding veggies n such might work? but then again my sick piggy doesn't eat it all at once like she usually would and I want to give her the option to eat the rest when she feels like it, so I'm at a bit of a dilemma here.
 
The amount of critical care you gives depends entirely on what the daily weight checks tell you. If she loses weight each day then she needs more critical care. If she is stable each morning then she was fed enough in the day before so you can give that amount of feed again during the coming day.

Hay is the main food intake. In her case as she isn’t eating it, critical care is her main food intake. Veg is simply supplementary (for any pig, only making around 10% of daily food intake). So reuniting her with her friends is the best thing for her and doesn’t detract from any food intake in any way.
Give her friends their daily veg portion as you normally would.
Make up your poorly piggy’s veg portion for the day in a bowl and set it side.
When she is taken out for each syringe feed that is then her opportunity to have some veg. Give her the syringe feed, and then hand feed some of the veg from the bowl and try to hand feed strands of hay after each syringe feed. You won’t be able to overfeed her veg as her portion for the day is already set side.
As she needs to be removed from the cage and syringe fed every few hours, there is plenty of opportunity her to have a little veg at a time and try to eat hay multiple times a day (syringe feeds could need to be four to six times a day depending on what the weight checks are telling you and by how much she takes at each feed). We find that offering a few strands of hay by hand immediately after a syringe feed can pique their interest in hay again, and it encourages them to try to forage independently once back in their cage with their friends.
She then goes back to the cage and rests in between each feed. There should always be hay available in the cage as well so if she wants to eat between syringe feeds then it is hay which she should be trying to forage on, not veg.

I hope that helps

I meant to add this guide to my previous reply also
Wiebke's Guide to Poops
 
Wishing you all the best.

It is not sooo long ago that most owners (and vets) thought that veg was the main food group and completely underestimated the hay intake which is a multiple of that of veg - and that also impacts on the amounts of feed that need to go in.

Your first aim is to slow down the weight loss and then stabilise the weight. Regaining any lost weight takes quite a bit longer and is not your priority right now.
 
Here's an update!
She has been living as normal with her sister since yesterday, while she is still not very active she has walked out of her bed and towards the hay/water once or twice now. Yesterday she was given about 80 ml of critical care and started to eat a bit more veggies as well as a piece or two of that fuzzy piece on hay. She was given 24 ml of critical for every 3 hours for 3 times, but on the 4th feeding time she was given 9ml because she apparently became a lot more agitated and was a lot more active in refusing the critical care by moving her head like crazy. For today, noises from her breathing have seemed to stop entirely and it looks like she is able to more quickly eat veggies. Additionally she is willing to drink a lot more water on her own when the bottle is placed is front of her.
Though yesterday morning, before being fed any critical care for the day, she weighed 897 grams and after the last critical feeding at night, she weighed in at 905 grams
This morning she was again weighed before being fed critical care and weighed 889 grams, I am unsure if this is normal fluctuations or not but it seems like her weight loss has at the very least slowed down, I'll see if her weight increases again later tonight.
I'm gonna have my parents feed her 24 ml of critical care for 4 times throughout the day so that she is getting around 96 ml for the whole day. But thank you Piggies&buns for offering the tip of handfeeding veggies/hay right after giving critical care! Her appetite looks like it has grown a little bit!
 
I’m glad to hear she is perking up.

Please only weigh her once a day - in the morning. You must not weigh her in the evening.

You compare each morning weight check with the check of the previous morning. So you log the 897g and the 889g and compare those two. You then compare the 889g to the weight check of the next morning.
This means she is stable and getting a good amount of critical care feeds over the previous day.

You cannot log or use an evening weight (the 905g weight) as all that does is weigh her with a day’s worth of food inside her. That weight check is therefore inaccurate and totally irrelevant.
 
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