ChewintheCud Podcast

Andrew Jones and Sarah Bolt bring you kitchen table conversations for the dairy industry, produced in the South West of England and listened to around the world. Now in its fifth year, each episode Andrew and Sarah are joined by a specialist from inside or outside the industry to discuss the practical and technical topics that matter to dairy farmers, advisers, and other industry professionals. They want to make you think about what you are doing — and ask yourself whether it could be done differently. For more information about our podcast visit www.chewinthecud.com/podcast or follow us on Instagram @chewinthecudpodcast, or on Facebook and LinkedIn as ChewintheCud Ltd. You can also email us at podcast@chewinthecud.com .

ChewintheCud Podcast is a science podcast hosted by Unknown Host, with 83 episodes on record and a Required Pod Score of 80.

Unknown Host hosts ChewintheCud Podcast, a science show with 83 episodes published.

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  Episode #6

  Stride 2026: The Cost of Doing Nothing!

  Sep 1, 20261h 13mS5

  Most farmers know lameness is a problem. Far fewer know what it's actually costing them, and the 2026 Stride survey suggests that gap is exactly what's holding the industry back. Andrew and Sarah are joined by Matt Dobbs, Vet & CEO of HerdVision, and Ian Lindsay, Business Development Director at LKL Services Ltd, to unpack the results of the newly released Stride survey on UK dairy mobility. With 173 producers responding on behalf of around 55,000 cows, the data lays out where the industry stands: the average cost of a case of lameness is around £330, yet nearly one in five farmers surveyed believed it was costing them under £100. Matt explains why lameness is a hidden cost in a way mastitis rarely is, and what that means for how seriously it gets taken on farm. Time comes out as the single biggest barrier stopping farms acting, but it's far from the only one. Ian draws a memorable comparison between a modern high-yielding Holstein and a Formula One car: however good the team around her, none of it matters if the tyres, in this case the feet, aren't right. Training, investment, and a lack of clear on-farm responsibility for mobility all feature heavily too, and Matt makes the case for farms appointing someone with the same ownership over mobility that a herd might give a dedicated youngstock manager. Stride is taking these findings on the road this autumn, with confirmed roadshow events in Somerset on Wednesday 14th October and Staffordshire on Wednesday 28th October, both run in association with the National Association of Cattle Foot Trimmers (NACFT - nacft.co.uk). Search www.stridemobility.co.uk for full details. This episode was recorded in July 2026, and all information was correct at the time of recording. Please note this transcript was generated using AI transcription software. Despite best efforts to ensure accuracy, there may be some errors in the final piece. What's the one thing standing between your farm and a proper mobility action plan? Let us know, and if you enjoyed this episode, please share it, subscribe, and leave us a review. Send us Fan Mail For more information about our podcast visit www.chewinthecud.com/podcast or follow us on Instagram @chewinthecudpodcast, or on Facebook and LinkedIn as ChewintheCud Ltd . You can also email us at podcast@chewinthecud.com .

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  Episode #3

  Feeding Calves for Resilience

  Aug 4, 20261h 17mS5

  Calf nutrition has come a long way since we last covered this topic — and in this episode, we catch up with two of Trouw Nutrition's own experts to find out just how far. Georgina Thomas, Young Animal Feed Technical Sales Manager, and Dr Juliette Wilms, a ruminant researcher who did her PhD on fat inclusion in calf milk replacer, join us to talk through the shift from growth-focused feeding to what they call resilience-focused nutrition. We get into why eight litres a day is now considered moderate rather than generous, what a calf would actually drink if left on its dam, and why feeding more only works if you're feeding the right thing. The heart of the conversation is fat — specifically the short and medium-chain fatty acids that occur naturally in whole milk but have historically been almost impossible to replicate in a calf milk replacer. Juliette explains the science behind restoring these, and why the payoff shows up most clearly in gut and respiratory health, not just growth rates. We also get into the real cost of scours and pneumonia in the calf shed, what Trouw's own research trial found when comparing four litres against eight, and why getting the fat-to-lactose balance right matters just as much as how much you're feeding. We round things out with a plain-English explanation of osmolality, why whole milk and calf milk replacer each have their place depending on your situation, and where Trouw's research is heading next — including some early findings on dairy beef calves that could reshape how a growing share of the industry rears its animals. As always, it comes back to the basics: get your colostrum, hygiene, and stockmanship right first, then use nutrition to build calves that can cope with whatever a real working farm throws at them. This episode was recorded in July 2026, and all information was correct at the time of recording. Please note this transcript was generated using AI transcription software — despite best efforts to ensure accuracy, there may be some errors in the final piece. What's your own take on feeding more milk versus feeding it right? Share your experience with us, and if you enjoyed this conversation, please subscribe and leave a review. Send us Fan Mail For more information about our podcast visit www.chewinthecud.com/podcast or follow us on Instagram @chewinthecudpodcast, or on Facebook and LinkedIn as ChewintheCud Ltd . You can also email us at podcast@chewinthecud.com .

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  Episode #2

  More Copper Isn't Always Better!

  Jul 14, 20261h 8mS5

  Published abattoir research found over 40% of cull cows had toxic levels of copper in their livers. Pull back to elevated concentrations and Annie Williams, independent mineral nutrition consultant at Mineral Advice Ltd, suggests more than half of UK dairy cows may be above the threshold — potentially suppressing performance in ways that are almost impossible to distinguish from deficiency. In this conversation, we examine why copper excess is a far more widespread problem than most farmers and advisers currently recognise, and what can realistically be done about it. The conversation covers the limits of blood testing, why liver biopsy is the only reliable measure of copper status, and how to conduct a proper mineral audit that accounts for every copper input across an animal's lifetime — including concentrates, forages, water, injectables, drenches, and boluses. Annie explains the role of antagonists, why grass-based systems carry higher risk than housed TMR, what palm kernel extract means for formulation, and how copper accumulated in the calf shed follows a heifer right into the milking herd. The area where knowledge is thinnest — and where Annie expects the most significant development — is the pre-ruminant calf. Adult cattle absorb less than 10% of dietary copper; a pre-ruminant calf bypasses the rumen entirely and absorbs somewhere between 60 and 80%. Current guidance recommends 5 mg/kg dry matter in calf milk replacer, five times what whole milk naturally contains, and nobody is entirely sure where that figure originated. Research underway at Harper Adams, led by PhD student Amy Marsh, is trying to establish what the correct formulation targets should be. If you rear your own calves in the UK or Ireland and are willing to supply survey data and have products sampled, the project would welcome your involvement — find out more at www.mineral-advice.com . This episode was recorded in June 2026, and all information was correct at the time of recording. Are you confident your current mineral programme accounts for the full lifetime copper picture — from calf milk replacer through to the milking herd? Share this episode with someone who might find it useful, and if you enjoy ChewintheCud Podcast, please subscribe and leave us a review wherever you listen. Send us Fan Mail For more information about our podcast visit www.chewinthecud.com/podcast or follow us on Instagram @chewinthecudpodcast, or on Facebook and LinkedIn as ChewintheCud Ltd . You can also email us at podcast@chewinthecud.com .

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  Episode #1

  DCAB: Stop Being Afraid of It!

  Jun 30, 20261h 6mS5

  The transition period is the twenty-one days either side of calving. Get it right and the rest of the lactation follows. Get it wrong and you could spend the next ten months firefighting. To kick off Year Five, we're joined by Vicky Ham, Ruminant Technical Services Manager, Europe for Arm & Hammer Animal Nutrition, to talk about DCAB — what it actually is, why it still strikes fear into people who should know better, and why the research keeps pointing in the same direction. The work goes back to Dr Elliot Block in the mid-1980s and is reinforced by meta-analyses from J.E.P. Santos: cows fed a negative DCAB diet calve with better calcium status, suffer fewer transition diseases, and eat more dry matter post-calving. The evidence is there. The question is why more people aren't using it. We cover the basics of acidification and how urine pH testing tells you whether cows are actually where they need to be — and why there is no such thing as a partial DCAB diet. You are either acidified or you are not. On the practical side we talk forage mineral analysis, straw potassium surprises in drought years, protein source selection, palatability, mixing, and why consistency is everything. We also cover what happens post-calving, stocking density, feed space, and why cows need to come off the negative DCAB ration the moment they calve. We also get into newer thinking on inflammation — the emerging evidence that hypocalcaemia may be less about calcium deficiency and more about an activated immune system demanding calcium and glucose at the expense of everything else. Studies suggest close to sixty per cent of cows at calving show inflammation with no clinical signs whatsoever. Managing that inflammatory load is not a separate conversation from transition nutrition. It is the same conversation. This episode was recorded in June 2026, and all information was correct at the time of recording. Are you running a DCAB diet, and if not, what's holding you back? We'd love to hear from you. Please share, subscribe, and leave us a review — it helps more dairy farmers find us. Send us Fan Mail For more information about our podcast visit www.chewinthecud.com/podcast or follow us on Instagram @chewinthecudpodcast, or on Facebook and LinkedIn as ChewintheCud Ltd . You can also email us at podcast@chewinthecud.com .

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  Episode #23

  No Cake, More Milk: Is it Possible with Robots?

  Jun 2, 20261 hourS4

  <p>If your robot relies on cake to keep cows moving, ask yourself a blunt question: what happens the day the pellet system breaks? That single point of failure is one of the reasons we wanted this conversation, because Kelli Hutchings and Matt Strickland have gone the other way and proven a “cake-free robot” approach can work on a commercial dairy.<br/><br/>Kelli is a feed and herd management adviser who found herself deep in the world of DeLaval VMS after helping launch large robotic sites across North America. Matt is a fourth-generation dairy farmer in Merced, California, running eigh...

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