I am a little obsessed with colostrum. It is the foundation of early life immunity in goats. We obsess over its quality for good reason. But what happens when a doe experiences udder stress at kidding like a small infection or inflammation? Could that disrupt antibody transfer to her kids?
A group of researchers wanted to find out. They simulated a mild immune challenge in the mammary glands of 20 Majorera goats right after parturition. They infused half the does with lipopolysaccharide (LPS), a bacterial component that triggers inflammation, while the other half received a harmless saline solution. Then they bottle-fed their kids two doses of colostrum and switched them to milk replacer. Over the next four weeks, they monitored growth, milk intake, blood chemistry, and antibody levels in the kids.
The does that received LPS had higher somatic cell counts and slightly higher IgG concentrations in their colostrum. This confirmed that their immune systems reacted as expected. But for the kids, there were no meaningful differences in performance. Their growth rates, milk consumption, and antibody absorption all matched the control group. In short, the immune bump in the udder did not ripple out to harm the kids.
Blood samples taken over time showed similar levels of IgG and IgM across groups. Basic metabolic markers like glucose, calcium, and total protein stayed within normal limits. At no point did the kids fed colostrum from LPS-treated dams show signs of stress or impaired immunity. This suggests that the blood-milk barrier in goats remains fairly stable, even when stimulated by an immune response at parturition.
This is reassuring news for goat owners, especially those dealing with large herds, environmental stress, or borderline cases of subclinical mastitis. The study helps separate elevated somatic cell counts from actual risks to kid health. A bit of immune noise in the udder does not mean your kids are missing out on protection.
Limitations
This study was small in scale, using only 20 goats of one breed under controlled conditions. It focused exclusively on bottle-fed kids who did not nurse naturally. So we do not yet know whether natural nursing or other breeds would respond in the same way. Also, the study ended at four weeks of age, so longer-term impacts on disease resistance or productivity were not measured.
Relevance for Us
In real-world goat management, sometimes birth doesn’t go according to plan. Maybe a doe shows signs of early udder stress. Maybe you suspect a mild infection. This study suggests that those events may not be as harmful to colostrum quality as feared. Goats seem able to maintain immune transfer even under mild udder inflammation. For those who bottle-feed or manage colostrum inventories, this means more flexibility and less worry.
It also emphasizes the value of testing, not guessing. Somatic cell counts and antibody levels can offer clarity when colostrum quality is in question. You might even consider freezing colostrum from healthy does for later use, knowing that a mild flare-up in another doe’s udder won’t necessarily ruin the batch.
Quick Takeaways
- LPS infusion triggered immune changes in the udder without harming colostrum function.
- Kids fed colostrum from LPS-treated does showed normal growth and antibody absorption.
- Mild inflammation at kidding may not reduce passive immunity transfer to kids.
- Somatic cell count increases do not always equal reduced colostrum quality.
Author Bios
Marta González-Cabrera is a veterinary scientist at Universidad de Las Palmas de Gran Canaria. Her research centers on colostrum, immunity, and neonatal development in goats.
S. Álvarez specializes in dairy goat health and mastitis physiology.
M. Salomone-Caballero works in animal physiology with a focus on neonate nutrition and blood biochemistry.
Noemí Castro studies maternal influences on kid immunity and the biochemistry of colostrum.
A. Argüello is a professor and leading researcher in goat husbandry, with extensive work on kid feeding protocols.
L. E. Hernández-Castellano researches mammary gland immunity and passive transfer mechanisms in ruminants.
(Author details sourced from institutional pages and recent publications.)
Funding
This study was supported by IUSA-ONEHEALTH 4 and the Canary Islands Institute for Agricultural Research.
Citation
González-Cabrera, M., Álvarez, S., Salomone-Caballero, M., Castro, N., Argüello, A., & Hernández-Castellano, L. E. (2024). Intramammary administration of lipopolysaccharides at parturition does not affect the transfer of passive immunity in goat kids. Animal, 18(1), 1000132. https://doi.org/10.1016/j.animal.2024.1000132
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