Homesteads and other dairy goat operations are increasing in popularity, as demand for fresh, unique milk products continues to rise. Goat milk is used to make various products such as butter, desserts, soaps, and lotions. However, as the dairy goat industry grows, so does the expectation for herd health surveillance, which is closely correlated with milk quality.
A common threat to milk quality is mastitis, a bacterial infection characterized by inflammation in the mammary gland. Because mastitis can escalate quickly if left untreated, early recognition, proper veterinary care, and diagnostic testing are crucial for herd health. By offering quick and precise diagnostic options, the Texas A&M Veterinary Medical Diagnostic Laboratory, TVMDL, helps goat producers and veterinarians stay ahead of mastitis.
Understanding mastitis in goats
Mastitis in goats resembles the condition observed in dairy cattle. It occurs when pathogens invade the mammary gland and cause inflammation. Common bacterial agents include Streptococcus, E. coli, and Mycoplasma.
Mastitis often begins when bacteria enter the udder through the teat canal. The risk of infection increases when animals are exposed to stress, overcrowding, sudden weather changes, or poor hygiene during milking. Goats infected with Caprine Arthritis Encephalitis, CAE, may also be more susceptible to bacterial infections.
Clinical vs. subclinical mastitis
Mastitis can appear in two forms: clinical or subclinical.
Clinical mastitis is the form most owners recognize because the signs are visible and obvious.
Signs:
- Milk may appear to have clots, flakes, watery, or of an abnormal color.
- The udder may undergo swelling, heat, hardness, or redness.
- In severe cases, systemic signs such as fever, loss of appetite, or lethargy appear.
Subclinical mastitis is harder to detect. The udder may appear normal, but sometimes, goat milk may appear slightly abnormal and contain small clumps or flakes that are not visible without close inspection.
Detecting and treating mastitis early, while still in the subclinical stage, helps prevent progression to clinical mastitis, which is a more painful and damaging form in goats.
Subclinical mastitis is often overlooked, so daily observation of behavior and outward signs is important. Herd owners should immediately contact their veterinarian upon suspected infection.
Treating mastitis
Treatment of mastitis usually involves intramammary antibiotics, sometimes supported by systemic therapy. Therefore, professional veterinary guidance is needed for the management of mastitis. Veterinarians select the correct therapy and ensure proper withdrawal times for consumer safety.
As an additional note, the kids of infected does may need to be bottle-fed temporarily to avoid exposure to pathogens.
Prevention through management
Preventing mastitis begins with good hygienic practices. Dairy goat owners can maintain cleanliness and keep bacteria at bay through the following best practices:
- Clean and disinfect teats before and after milking by using individual, disposable wipes.
- Ensure milking equipment is thoroughly sanitized before and after each use.
- Maintain clean, dry environments to reduce bacterial exposure.
- Monitor goats daily for changes in appetite, behavior, and milk quality. Early attention to subtle signs can prevent more serious health problems later.
The role of TVMDL
TVMDL supports goat producers and veterinarians by providing diagnostic services that guide treatment and prevention. TVMDL offers:
- Mastitis culture to identify bacterial pathogens.
- Mycoplasma PCR testing.
- Competitive ELISA testing for Lentivirus, a causative agent of CAE.
While TVMDL does not run somatic cell counts, SCC, producers can use the California Mastitis Test to estimate a surge of SSC in their herds with a color changing indicator. The result suggests the likelihood of a goat being infected with mastitis.
Positive or suspicious results should be followed up with veterinary consultation and, ideally, lab testing.
Securing the future of goat milk production
Mastitis has been proven to inhibit goat health and farm productivity. Goat producers can make efforts such as maintaining a clean milking environment to prevent bacterial invasion.
Additionally, close monitoring, early recognition of potential signs, and working closely with a veterinarian is also important. When paired with TVMDL’s diagnostic services, these approaches help uphold optimal animal health and ensure the continued success of dairy goat operations.
For more information about tests for mastitis detection or other diagnostic services, visit tvmdl.tamu.edu or call the College Station laboratory at 1.888.646.5623.
