Great results from Austrian study
SPERMVITAL SHOWS CLEAR ADVANTAGES IN AUSTRIA
In the Flechvieh Austria magazine 6/2020, there was an article presenting the results of a Master thesis done for Genostar in Austria.
The study refers to inseminations done in herds that had used SpermVital semen in the period from 2015 to 2019.
The use of the SpermVital semen in the study show on average a 6% higher NRR on heifers and 4,4% higher on cows. The result was even greater on repeat breeders, with a difference of up to 8,5% on animals with more than three inseminations.
The results from Genostar supports the study done by Masterrind in 2019, which showed an advantage of 8,3% in NRR for SpermVital when inseminated early.
Masterrind trial demonstrate SpermVital advantage
During the summer and fall of 2019, Masterrind conducted a field trial where the purpose was to test SpermVital®-semen in comparison with ordinary semen.
The trial gave strong indications that early insemination with SpermVital®-semen has a positive effect on the Non Return Rate.
Below are the results from the trial.
The field trial was conducted independently by Masterrind, with doses originally produced for sale. The trial included 5 farms. All farms used Heatime systems as a basis for heat detection. In total 440 cows and heifers were inseminated, divided into four groups. Based on the Heatime system, about 50% of the cows and heifers were inseminated 12 hours prior the optimal time, either with SpermVital®-semen or with regular semen doses from the same bulls. The semen was not produced as split sample doses. The other half of the cows were inseminated at the optimal time, either with SpermVital®-semen or with regular semen. Heat detection was performed by ultra sound.
The figure show:
- SpermVital semen gave a 8,3% higher NRR than ordinary semen, when inseminated early.
- SpermVital semen, inseminated early gave a higher NRR than both SpermVital semen and ordinary semen inseminated at the ordinary time.
None of the differences were statistically significant, due to the relatively small numbers in each group. However, the result indicates that the early insemination with SpermVital®-semen is beneficial, as variations in ovulation time, relative to heat symptoms, is covered by the prolonged life span of the SpermVital®-semen.
SpermVital shows clear advantage in Turkish field study
During the DVG Vet Congress in Berlin in 2017, a study done by Dr. Alper Koçyiğit, DVM, PhD, University of Cumhuriyet, Turkey, was presented.
The title of the study was “Performance of Spermvital Technology on Pregnancy Rate in Repeat Breeder Dairy Cows” The study showed that SpermVital semen provided a 11,3% higher fertility rate than conventional semen.
The aim of this study was to investigate the effect of SpermVital semen on conception rates in repeat breeder multiparous dairy cows. Seventy-nine multiparous Holstein cows from a private dairy farm were used in the study. These animals were cows that had failed to conceive from at least 3 regularly spaced services (repeat breeders). Estrus cycles of the cows were synchronized by 2 injections of the PG analogue, administered 11 days apart. GnRH was applied 48 h after the second injection of PG. Twenty-four h after this administration, the animals were randomly divided into 2 groups, control and SV. The animals in the control group (n = 28) were inseminated with standard processed semen, and the cows in the SV group (n = 51) were inseminated with SV® technology processed semen. A lower pregnancy rate (35.5%) was determined in the control group than in the SV (47.1%) group. The difference between pregnancy rates in the groups was statistically significant (P < 0.05).
SpermVital® semen can replace double inseminations.
The increased longgivity of SpermVital® semen demonstrated in field trial.
SpermVital® conducted two separate field studies in different markets during 2014 to investigate whether the SpermVital® semen had increased longevity in cows and heifers.
The studies comprised of a total of 491 animals (both beef and dairy breeds were included), randomized into two groups, and then synchronized for estrus.
Thereafter, approximately half the cows and heifers were inseminated on day 3 after estrus synchronization with one dose of SpermVital semen. The other half were inseminated on both day 3 and 4 with standard processed bull semen.
Normally, it is expected that insemination on two consecutive days will give a higher pregnancy rate than only one insemination. The results showed that the Non return rate did not differ significantly.
The studies prove that the animals inseminated with SpermVital® semen had equally good access to fertile sperms compared to those animals inseminated on two concecutive days with regular semen. These studies support the recommendation that one dose of SpermVital® semen can replace double inseminations with standard semen. Furthermore, the studies imply that the SpermVital® technology prolongs the lifespan of sperm cells.
Italian field trial show increased pregnancy rate for SpermVital® semen
The field trial, performed by the Ambrovet group, was based on 2076 inseminations and showed that inseminations with SpermVital® semen increased the pregnancy rate by 8,4% on average.
SpermVital® conducted a field trial in Italy during the summer and fall of 2012 to test the effect of the SpermVital® technology utilized on the Holstein breed.
The conception rate increased on average from 33.5% with regular semen to 41.9% with SpermVital® semen. The difference in conception rate increased with the number of inseminations needed. The difference in conception rate was 10,2% between SpermVital® semen and regular semen on cows needing more than 3 inseminations. These results show that cows that return to heat increase their conception rate greatly by utilizing the SpermVital® technology.
2076 doses of semen were used in this blinded field trial, where half of the inseminations were made with Holstein SpermVital semen and half with regular Holstein semen. The Holstein cows were inseminated at normal time, which is not the optimal time for insemination to achieve full effect from the SpermVital technology since it will not capture the ones with early ovulations. Normally you will inseminate a little early when you are using the SpermVital technology to achieve all the benefits the technology has to offer.
The difference between the groups are statistically significant.
The pregnancy check was performed by ultrasound.
