For the rest of us that don’t have that technology on hand, there are still plenty of ways to monitor early lactation performance to help us better understand the impact of the specific fatty acids we are feeding – specifically, body condition scoring from pre-fresh to fresh, monitoring NEFAs or BHBAs and tracking first butterfat trends in your herd management software to detect any significant changes in fat mobilization.

Let’s walk through the main fatty acids found in dairy diets and talk specifically about the signals they are sending beyond being utilized for energy. While they may seem complex, the stakes are high in understanding their roles as there is a rare function of the cow that is not impacted by fatty acids. 

Let’s play a simple word association game. When I say “milkfat,” what do you say? Palmitic? That’s what I’d expect 80% of you to say if we were having this conversation in person.

Milkfat is a valuable commodity and is a reflection of overall rumen health and production efficiency. Take a proactive approach with your nutritionist to find ways to better optimize factors affecting milkfat yield, including taking a closer look at what lies behind the average bulk tank fat test.

In a previous article, I noted that high-palmitic-fatty-acid (greater than 80%) supplements most often decrease dry matter intake (DMI). And, since many studies with that type supplement have been done with midlactation cows over a short term (21 days), it raises the question as to what would be the response in early lactation cows?

About 10 years ago, I was working in another country and asked a question of a nutritionist I had known for 10 years previously: “What fat supplementation are you providing?” I was surprised when she said after about five years’ experience with high palmitic fatty acid (HPFA) supplementation, they no longer used that supplement.