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Genetic Diversity in Dairy Goats

As I mentioned in my last quick update, I’ve made a conscious decision to cross in a meat-type buck this year, hoping to capitalize on his genetics for parasite-resistance and good hooves. I mean, man, you should see Henry’s hooves. He has amazing hooves that require no fooling with, which is a huge improvement over my dairy does.

The problem I find with the dairy goat world is that there are conformation shows. Conformation shows give me hives, because they reward a specific look but don’t reward things like hardiness, dairy production, and good hooves. The show-winning goats tend to come from herds where the breeders are engaging in some very tight line-breeding to lock that winning look in. The problem here is that tight line-breeding is difficult to do well if you aren’t willing to raise the resulting animals and ruthlessly cull the ones who fail to thrive.

Couple this with some weird genetic superstitions in the livestock world (e.g. it’s ok to breed father to daughter but not mother to son, which from a scientific point of view is an utterly meaningless distinction) and you wind up with things like the prevalence of the G6S gene in Nubian goats, and goats who need regular doses of wormer and frequent hoof-trimming to thrive. These things are problems. The fact that goats are difficult to AI has meant that on a broad scale the Popular Sire problem isn’t as bad as it is with, say, show dogs, but regionally you will still run into the same thing as people rush to the local herds that are winning awards and breeding to those bucks. It’s another huge loss of genetic diversity.

I”m not saying, mind you, that show goat people don’t care about their goats. I know for a fact that many of them love their goats as deeply as I love mine, and care for them incredibly well. It’s just a question of long-term goals for your herd, and I am fundamentally lazy. If I can breed up a dairy herd with good (but not necessarily stellar) production, consisting of goats I hardly ever have to worm with hooves I almost never have to trim, I am all over that. If I can take it further and improve feed efficiency so that the goats in my herd can keep up a healthy weight with smaller portions of grain and hay, even better.

So I’m totally fine with not being able to sell the kids from these first generations for premium prices. But I’m also certain that as I improve my herd, I will find other goat people like me, who are less interested in maintaining purity of breed and an extreme type than they are in hardy, efficient goats that are fun to be around because you can spend all your time with them smooching their noses instead of collecting poop for parasite testing or worrying over their feet.

And I do think the dairy goat world needs to take some cues from the meat goat world, where the goal is animals who thrive on an absolute minimum of human intervention. For that to happen, the goats have to be incredibly healthy, hardy, and resilient, and a goat who can handle what the world throws at it physically without stress is going to be a happier goat in general. It doesn’t mean we dairy goat people have to be less involved with our goats, but it does mean that we need to be very thoughtful and careful about our choices.

There’s also an incredible need for education in basic genetics and what they mean. Breeders need to know what a Coefficient of Inbreeding is and what it says about the risks you’re taking when you cross two animals. Instead of selling babies as young as possible to get them out of the way, we need to be keeping them for at least a couple months to see how they grow and how well they thrive. We need to be keeping track of how often our individual goats need worming, and treating parasite resistance as a trait that’s just as important as good conformation. We need to understand what the tools we use to evaluate goat health actually tell us, rather than using them blindly and half-taught.

Without this shift, we’re going to remain locked into an ever-escalating war with parasites, as one dewormer after another becomes useless because the parasites have evolved to resist it. We’re going to be dumping more and more poisons down our goats because we haven’t been making the choices required to ensure that the goats themselves can take care of the parasite load. We’re going to remain locked into a war that requires stronger and stronger antibiotics to fight off bacteria our goats can’t handle themselves. And we’re going to be spending huge amounts of money on grain and hay that are usually not organically grown and thus add to our carbon footprint, when we could be breeding toward goats who thrive on pasture and sequester carbon while they eat.

One thought on “Genetic Diversity in Dairy Goats

  1. Yes! I just did fecals on my girls and found this in trying to find if any breeds are more parasite resistant than others. I couldn’t agree more with your article.

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