Over the past 30 years the reproduction status of dairy has improved substantially, largely due to research around reproduction synchronization. This month we talk to Dr. Paul Fricke and Megan Lauber from the University of Wisconsin, about their recently released paper titled: Effect of postpartum body condition score change on the pregnancy outcomes of lactating Jersey cows inseminated at first service with sexed Jersey or conventional beef semen after a synchronized estrus versus a synchronized ovulation.
We discuss the how to maximize the equation of fertility, through management. Once optimized, you’ll find your herd entering the “high fertility cycle”. When all the stars align, production is high – disease is low and you are able to begin to stack reproductive technologies – such as genomically determined breedings using sexed and beef semen use following the ideal synchronization.
Listen in to learn how to get your herd there and the physiology behind it.
Topics of discussion
1:54 Introduction of Dr. Paul Fricke & Megan Lauber
4:23 Objectives of the trial – stacking reproductive strategies
3:34 On farm monitoring – data collected
6:10 Getting all the cows on day 7 – the key to unlocking fertility
7:44 The history of Luteolysis – why is it so critical?
9:57 Rate limiting step of pregnancy
12:03 2019-2021 xx and beef semen usage
13:54 Research protocols and design
16:20 Equation of reproduction; comparing double ovsync vs estrus
17:50 Estrus or Double ovsync for Sexed semen
16:14 Day 19 – 40 pregnancy loss
17:30 What’s happening when the GnRH shot is given?
22:13 The impact of Body Condition Score (BCS) change on fertility | >0.5
24:53 High fertility cycle
25:52 Not all cows loose condition through transition, those that did were impacted
26:38 Results: Double ovsync helps mitigate poor transition (Figure 4)
29:09 Why does it work? What physiology controls it?
30:15 Fat regulates GnRH?!
32:30 What do you want dairy producers to know from your research
Featured article: Effect of postpartum body condition score c hange on the pregnancy outcomes of lactating Jersey cows inseminated at first service with sexed Jersey or conventional beef semen after a synchronized estrus versus a synchronized ovulation.
Also mentioned in the discussion: Characterization of semen type prevalence and allocation in Holstein and Jersey females in the United States
#2xAg2030; #journalofdairyscience; #openaccess; #MODAIRY; #reproductionrevolution; #highfertilitycycle; #Ovsync; #DoubleOvSync; #transition; #transitiondairy; #dairysciencedigest; #ReaganBluel
DSD 3.9| Turn methane from a liability into an asset
DSD 3.8 | The high fertility cycle
DSD 3.7 | Is She Settled?
DSD 3.6 | Not your Grandfathers Sorghum
DSD 3.5 | Modeling biometrics benchmarks for a successful transition cow management
DSD 3.4 | Under the hood
DSD 3.3 | Financial Resilience – the individual cow effect
DSD 3.2 | Unleashed Energy
DSD 3.1 | Don’t waste your GnRH
DSD 2.12 | New Rx for Dehorning?
2.11 | Measuring Fat During the Transition Period
DSD 2.10 | Impact of on farm feed in your AMS
DSD 2.9 | Educating Consumers
DSD 2.8 | Consider Cobalt
DSD 2.7 | Timing of Prefresh Vaccination matters
DSD 2.6 Doesn't cost a thing
DSD 2.4 | Reproductive Success for late calving grazers
DSD 2.3 | Fresh Cow Ration - Protein Matters
DSD 2.2 - The Future of Milk testing | pregnancy, disease and efficiency
DSD S2E1 Solar Panels in your dairy system
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