Trials showing the effect of Fertitop bolus on pregnancy in dairy cows
30 September 2021
It is very important for the profitability of a cattle farm that the animals become pregnant and give birth to a calf every year. However, fertility is a complex subject that depends on many factors such as breed, season, and diet. The aim of our fertility bolus Fertitop is to support the preparation of the cow for oestrus and reproduction.
An evaluation of Fertitop took place in 2018 in which multiple trials took place:
- Trial 1: Fertitop bolus in TMR feeding system
- Trial 2: Fertitop bolus in combination with CIDR
Trial 1: Fertitop bolus in TMR feeding system
The first trial involved:
- Dosing 14 dairy cows with 1 Fertitop bolus 10 days before artificial insemination
- Comparing this with 15 dairy cows that received no bolus before artificial insemination
- Both groups were fed the same total mixed ration
One cow in each group was not suitable for insemination, bringing the number of cows in the Fertitop group back to 13 cows and in the control group to 14. The Resco Fertitop bolus had a positive effect on the pregnancy rate of the cows. 69% of the cows became pregnant after the first insemination, compared to only 42% in the control group.
The remainder of the cows in the bolus group all became pregnant after the second insemination 21 days later, while the rest of the cows in the control group needed 2 or more heats to get pregnant.
Given that sexed bull semen costs 35 euro* and the majority of farmers do the insemination themselves at no extra cost, an average insemination in the Fertitop group costs 45,76 euro and in the control group 62,50 euro. With a difference of 16,74 euro per cow (not counting other extra costs that go together with a prolonged calving interval) the Fertitop bolus is worth its price.
Table 1: Fertitop group in TMR
Table 2: Control group in TMR
Trial 2: Fertitop bolus in combination with CIDR
The second trial involved:
- Dosing 8 dairy cows with 1 Fertitop bolus 10 days before artificial insemination and giving the 8 bolused cows an intravaginal hormone treatment (CIDR = controlled internal drug release)
- Comparing this to 4 dairy cows that received 1 Fertitop bolus 10 days before artificial insemination, but were given no CIDR.
62% of the cows that received a Fertitop bolus in combination with CIDR got pregnant after the first insemination and the remaining 38% after the second insemination. This compared to 50% of the cows that received a Fertitop without CIDR that got pregnant after the first insemination, and the remaining 50% that got pregnant after 2nd or more heat.
Table 3: Fertitop group with CIDR
Table 4: Fertitop group without CIDR
* Median cost of sexed bull semen in Spain. Sexed semen has a 90% probability of producing a cow. Non-sexed semen is cheaper but only has a 50% probability of producing a cow.
28 February 2023
Hypokalemia in cattle
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17 August 2022
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10 June 2022
Thank you for visiting us at VIV Europe!
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11 May 2022
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Resco will have a booth at VIV Europe from 31/05 to 02/06 in Utrecht, The Netherlands. We welcome you to meet us, without a blurred background!
28 February 2022
Trial Mammitop Clinic bolus
In this trial the Mammitop Clinic bolus from Resco is tested by the International University of Andalucía, Sevilla, Spain.
24 January 2022
46% more weight gain for your calves!
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22 December 2021
Happy holidays from Resco
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29 November 2021
VIV MEA: Resco is finally present at exhibitions again
We want to thank everyone who took out their time to meet and talk to us at VIV Middle East and Africa.
29 November 2021
A Hungarian university study on the effect of our calcium bolus
A study was performed by the University of Veterinary Medicine Budapest on a Hungarian farm from May to June 2019. This study compared 168 cows that received two Calcitop boluses the day after calving to 136 cows that calved in the same period a year earlier (May to June 2018).
29 October 2021
Visit us at VIV MEA
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29 October 2021
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23 September 2021
Cryptotop becomes Coxicryptop
We have changed the name of Cryptotop to better reflect it's purposes
2 September 2021
A new look for Resco!
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30 July 2021
The effects of essential oils in Cryptotop on coccidia
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29 July 2021
When rearing calves, farmers strive for regular growth of their animals. This can only be achieved when the calves get enough food and when farmers ensure that the animals remain healthy. A common, yet underexposed, problem to the calves’ health is calf coccidiosis.
22 June 2021
Probably the best calcium bolus in the world
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25 May 2021
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19 April 2021
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29 March 2021
Milk fever in cows: everything you need to know, including 2021 update
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22 January 2021
33 benefits of trace minerals for cattle and why you should supplement them
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22 January 2021
Trial comparing High Trace mineral bolus for weight gain in cattle
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Viv Asia 2019
Bangkok, colourful city filled with sensational tastes, history, culture, ... and the wonderful VIV ASIA 2019. Make sure to share this experience with us on March 13-15 and visit our booth 2324 in Hall 102. See you soon!