Pig Urination Problems After Farrowing: What’s Normal and What’s Not

After farrowing, some sows seem slow to pass urine because they are tired, sore, dehydrated, or not getting up often. That can happen briefly, especially after a long labor. Still, true straining, repeated posturing with little urine, vocalizing, or a tense belly are not normal postpartum findings and deserve attention from your vet.

One important cause is cystitis or ascending urinary tract infection. In sows, the short, wide urethra makes it easier for bacteria to reach the bladder. Merck notes that reduced water intake, fecal contamination around the perineum, excess body condition, leg problems, and reduced urination can all increase risk. Typical signs include frequent attempts to urinate, cloudy or blood-stained urine, and discomfort.

Another possibility is urinary retention after a difficult farrowing. Swelling, pain, nerve stretch, or trauma around the pelvis and reproductive tract can interfere with normal bladder emptying. In some cases, the sow may dribble a little urine but still retain a large amount in the bladder. Less commonly, blood clots, stones, or severe inflammation can partially block urine flow.

Urinary signs can also overlap with postpartum dysgalactia syndrome (PDS) or metritis. Merck describes PDS as a postpartum syndrome often seen within 12 to 24 hours after farrowing, with fever, reduced appetite, and mammary inflammation. Metritis and cystitis are both part of the postpartum differential list, so a sow with urinary trouble plus fever, foul discharge, or poor nursing needs prompt veterinary assessment.

A short period of reduced urination may be reasonable to watch closely if your sow is otherwise bright, drinking, eating, getting up normally, and passing urine without straining. In that situation, focus on hydration, clean bedding, and careful observation for the next several hours. Keep notes on how often she rises, whether urine is actually produced, and whether the stream looks normal.

Call your vet the same day if you see repeated squatting with only drops of urine, obvious pain, urine that is bloody or cloudy, foul odor, urine scalding, reduced appetite, constipation-like straining, or a sow that is reluctant to stand. These signs suggest more than normal postpartum soreness.

See your vet immediately if there is no urine despite repeated straining, a swollen or painful abdomen, marked lethargy, vomiting, collapse, fever, foul vaginal discharge, or piglets that are weak and not nursing well. Complete inability to urinate is treated as an emergency in veterinary medicine because retained urine can quickly lead to bladder damage, toxin buildup, and kidney compromise.

If you are unsure whether she is straining to urinate or to pass manure, it is still worth contacting your vet. Post-farrowing pigs can have more than one problem at once, and urinary disease, metritis, constipation, and PDS can look similar early on.

Your vet will start with a physical exam and a careful postpartum history. Expect questions about when farrowing occurred, whether assistance was needed, how much she has eaten and drunk, whether she has passed manure, what the urine looks like, and whether there is fever, udder inflammation, or vaginal discharge. They may palpate the abdomen to assess bladder size and pain and examine the vulva and perineal area for swelling, trauma, or contamination.

Basic diagnostics often include a temperature check, urinalysis, and sometimes urine culture. Urinalysis helps look for blood, inflammatory cells, bacteria, and concentration of the urine. If your vet suspects infection, a culture can help guide antibiotic choice rather than guessing. Bloodwork may be recommended if there is concern for dehydration, kidney stress, systemic infection, or severe postpartum illness.

If the bladder feels overfull or the sow cannot pass urine, your vet may recommend catheterization to relieve retention and confirm whether an obstruction is present. Depending on the case, they may also use ultrasound to evaluate the bladder, kidneys, or uterus. When postpartum disease is suspected, the workup may expand to include evaluation for PDS, mastitis, metritis, constipation, or trauma from a difficult delivery.

Treatment depends on the cause. Options may include fluids, pain control, anti-inflammatory medication, antibiotics when infection is likely or confirmed, nursing support, and management of any concurrent uterine or mammary disease. If there is severe obstruction, systemic illness, or inability to stand and nurse piglets safely, hospitalization may be the safest path.

Home care should support your sow while you stay in close contact with your vet. Keep her in a clean, dry, well-bedded area with easy access to fresh water. Good hygiene matters because fecal contamination around the vulva can increase the risk of ascending urinary infection. If she is willing to rise, encourage gentle movement so she is not lying in one position for long periods.

Watch for actual urine production, not only squatting. A sow that postures often but produces little urine may be getting worse even if she looks active. Note the color and amount of urine, whether she cries out, whether the belly looks distended, and whether she is passing manure normally. Also monitor appetite, rectal temperature if your vet has asked you to, udder changes, and piglet nursing behavior.

Do not give human pain medicines or leftover antibiotics. Those choices can be unsafe and may make diagnosis harder. If your vet prescribes medication, give it exactly as directed and finish the course unless your vet tells you otherwise.

If your sow stops eating, develops fever, has foul discharge, becomes weak, or cannot pass urine, home care is no longer enough. See your vet immediately. Early treatment usually gives the best chance of protecting both the sow and her litter.