DSD 4.7 | Ketosis and Antioxidant ability - Chicken or the egg?

Dairy Science Digest

DSD 4.7 | Is there a relationship between Ketosis and antioxidant ability

For years, dairy producers have worked towards best understanding all the challenges a cow experiences as she transitions from dry into lactation. If we can best identify the animals who take this transition in stride, we can work towards improving the single most challenging part of dairy production. This month, we are joined by two Belgium researchers looking to examine the relationship between antioxidant activity and ketotis, specifically BHBA.

Dr. Fievez, ruminant nutritionist at Ghent University - in Belgium, worked with PhD candidate MQ Zhang to study the metabolic and antioxidant parameters of 110 animals through transition. Listen in to hear what you can learn about the complex transition dairy cow!

These findings were published in the Journal of Dairy Science article titled, “Transition cow clusters with distinctive antioxidant ability and their relation to performance and metabolic status in early lactation.” Open access, available for download.

Topics of discussion

3:17 Importance of determining Antioxidative Ability
4:44 Hypothesis – structure of the project
5:16 Metabolic parameters studied and their relationship to oxidation
5:31 Background of BHBA
6:02 Negative energy balance -
6:27 NEFA and Low or High antioxidant activity
6:58 Cows with Lower Antioxidant activity have lower milk yield
7:46 Oxidative Stress and damage – what does it look like?
9:29 How the cow Balances – monitor enzyme profile
10:19 Description of the research herd
11:07 Results – Figure 6; cows with HAA in early lactation, rarely develop metabolic disease
12:33 How NEFA add to oxidative status
12:49 Oxidative action and immune function
16:09 LAA – Higher BHBA – tended to be higher NEFA
18:01 What do you want boots on the ground dairymen to know?
18:49 Dietary inclusion
19:20 Closure
#2xAg2030; #journalofdairyscience; @jdairyscience; #openaccess; #MODAIRY; #antioxidant; #earlylactation, #transition; #transitiondairy; #ketosis, #BHBA; #ReaganBluel

https://www.journalofdairyscience.org/article/S0022-0302(23)00351-X/fulltext