![BEEF HEALTH](https://cdn.magzter.com/1662722516/1702034135/articles/Cjjt-i0zI1702039920878/BEEF-HEALTH.jpg)
Viral diseases in beef cow herds are pesky and serious. That's why you vaccinate at least once a year for such things as BVD (Types 1 and 2), IBR, PI3, Lepto, and a few others that your veterinarian recommends.
If that were the whole story, it would be fairly simple. But sometimes the type of vaccine becomes an issue with reproductive performance.
Vaccines come in two types: killed vaccine and modified-live vaccine (MLV).
A killed vaccine has a killed portion of the pathogen and no live material. It still triggers an immune response.
MLV, on the other hand, contains an attenuated version of the live virus that comes closer to mimicking a real infection. It gives a stronger response, experts say, but it can also on rare occasions lead to pregnancy loss.
Elanco cattle reproductive specialist Frank White says research reveals that the strong response to an MLV stresses a cow's reproductive system. It interferes with her ability to form a functional corpus luteum on her ovaries and to produce progesterone, the hormone needed to maintain pregnancy. Sometimes this results in early pregnancy loss.
Elanco, which makes cattle vaccines, has tested its killed vaccine, Vira Shield, against competitive MLVs. Vira Shield resulted in a 4.3% higher pregnancy rate 56 days after breeding. "With 100 cows, that's four more pregnancies," White says.
هذه القصة مأخوذة من طبعة December 2023 من Successful Farming.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 8500 مجلة وصحيفة.
بالفعل مشترك ? تسجيل الدخول
هذه القصة مأخوذة من طبعة December 2023 من Successful Farming.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 8500 مجلة وصحيفة.
بالفعل مشترك? تسجيل الدخول
![WEARABLE TECHNOLOGY MAKES THE WORKPLACE SAFER](https://reseuro.magzter.com/100x125/articles/27497/1708925/A_17Vd41N1716555609763/WEARABLE-TECHNOLOGY-MAKES-THE-WORKPLACE-SAFER.jpg)
WEARABLE TECHNOLOGY MAKES THE WORKPLACE SAFER
From simple gadgets, like smartwatches, to systems that monitor employee health, tech is a valuable safety tool.
![INVESTED IN COMMUNITY](https://reseuro.magzter.com/100x125/articles/27497/1708925/fJMlJWp1-1716555430053/INVESTED-IN-COMMUNITY.jpg)
INVESTED IN COMMUNITY
Aaron LaPointe is honoring his elders and bringing hope to the youth of the Winnebago Tribe of Nebraska.
![ROLL-AROUND SHOP SUPPORT](https://reseuro.magzter.com/100x125/articles/27497/1708925/CRtpZxmSL1716555299110/ROLLAROUND-SHOP-SUPPORT.jpg)
ROLL-AROUND SHOP SUPPORT
cool tools for Farming
![MANAGING BACTERIAL DISEASES](https://reseuro.magzter.com/100x125/articles/27497/1708925/dCFds6JgM1716555110544/MANAGING-BACTERIAL-DISEASES.jpg)
MANAGING BACTERIAL DISEASES
Accurate diagnosis is the first step in a control strategy.
![GROWING 200-BUSHEL SOYBEANS](https://reseuro.magzter.com/100x125/articles/27497/1708925/xWxXHM40y1716554922739/GROWING-200BUSHEL-SOYBEANS.jpg)
GROWING 200-BUSHEL SOYBEANS
World record holder Alex Harrell shares tips on taking soybean yields to the next level.
![TRANSFER THE FARM NOW OR LATER?](https://reseuro.magzter.com/100x125/articles/27497/1708925/YxDBjRk2A1716554763853/TRANSFER-THE-FARM-NOW-OR-LATER.jpg)
TRANSFER THE FARM NOW OR LATER?
Problem: Is it better to start transferring the daily operation to the farm heir or focus on the farm estate plan first?
![Pork Powerhouses 2023](https://reseuro.magzter.com/100x125/articles/27497/1708925/JzOmTKBLo1716554591655/PORK-POWERHOUSES-2023.jpg)
Pork Powerhouses 2023
THE 36 LARGEST U.S. PIG PRODUCERS REDUCED SOWS BY 17,348 IN 2023, THE FIRST NET LOSS PORK POWERHOUSES® REPORTED SINCE 2010.
![DISEASE SCOUTING IN THE DIGITAL ERA](https://reseuro.magzter.com/100x125/articles/27497/1708925/yCwbLIrpO1716554385801/DISEASE-SCOUTING-IN-THE-DIGITAL-ERA.jpg)
DISEASE SCOUTING IN THE DIGITAL ERA
Digital platforms offer new approaches to identify diseases and time fungicide applications to save time and protect yield.
![SHIPPING STRUGGLES](https://reseuro.magzter.com/100x125/articles/27497/1708925/oMHpKM_Hk1716554231099/SHIPPING-STRUGGLES.jpg)
SHIPPING STRUGGLES
The Mississippi River may present challenges again in 2024.
![SPRAYER PRICING, AVAILABILITY BACK TO NORMAL](https://reseuro.magzter.com/100x125/articles/27497/1708925/DIpAWXkjJ1716553933551/SPRAYER-PRICING-AVAILABILITY-BACK-TO-NORMAL.jpg)
SPRAYER PRICING, AVAILABILITY BACK TO NORMAL
Upgrade options improve older equipment's appeal.