silages therefore provide a lot of propionate to the liver. Bolstering the high production cow’s ability to deal with this in the


liver and to manufacture glucose really pays off. It means that more energy is available for milk production. Feeding the product to early and mid-lactation cows also has a


positive impact on fertility. The latest UK trial, carried out on a 450-cow Holstein unit based in north west England, involved 60 multiparous (averaging 3.45 lactations) early and mid-lactation cows, producing an average milk yield of 37.5 litres/day. At the start of the trial, cows averaged between 63 days in milk


(DIM) and were split into two even groups, to allow a controlled trial during the same time period. Trial cows were fed 100g of Turbopro per head per day, fed once a day via TMR. The control group received no Turbopro. During the 10-week trial, milk yields were recorded daily and


summarised each week. Milk solids were recorded on weeks three and eight of the trial. The trial shows a benefit in milk yield of +1.28 litres observed in


the Turbopro group. Also, milk solids increased in the Turbopro group; +0.09% butterfat and +0.09% milk protein (see Table 1 & Figure 1).


Table 1: Performance of Turbopro group versus control


The UK trial also revealed an improvement in fertility (see Table 2).


Pregnancy rate was 35% in the Turbopro fed group, compared to 27% in the control group. Conception rate was 57%, compared to 35% for the control group. And the average number of straws per conception was 1.8 for the supplemented group, compared to 2.9 straws for the control.


Table 2: Fertility performance of Turbopro group versus control


Fertility results Pregnancy rate % Submission rate % Conception rate %


Average straws / conception


Control 27 73 35


2.9


Turbopro 35 65 57


1.8 Based on a UK milk price (May 2020), including Turbopro in the


ration provided an IOFC improvement of 49p per head per day and a ROI of 6:1. And per 100 cows that’s £20,805 per year in additional milk revenue – and an IOFC increase of £17,885 per year. And trials in other countries have borne out the results in UK work.


Trials on five dairy units in France mirrored UK work and scientists were able to statistically prove yield responses of an additional 1.8 litres per cow in early lactation and 1.2 litres in mid lactation. A survey of French producers, who were feeding Turbopro to their


kg


milking herds, was carried out in 2019 and the team gathered testimonial data from 25 units, comprising a total of around 3,000 dairy cows, to find how producers perceive the benefits of the supplement. There were many recurring themes, including higher milk yield and milk components, as well as better reproductive performance and a reduction in somatic cell count (see Figure 2).


Figure 2: 2019 testimonial feedback study: France Figure 1: Milk yield performance


k g /


d a y


k g /


d a y


27.00 28.00 29.00 30.00 31.00 32.00 33.00 34.00 35.00


Weekly milk yield Weekly milk yield


27.00 28.00 29.00 30.00 31.00 32.00 33.00 34.00 35.00


Feedback from UK producers using Turbopro, coupled with trial


1 1


2 2


3 3


4 5 6


A4 - Contro5lweek 6B - Turbopro A - Control


7 7


B - Turbopro The trial also revealed an improvement in milk yield and energy


corrected milk (ECM). To enable a comparison to be made, the value of ECM is used as it takes milk solids into account. The Turbopro group was 1.37kg ahead of the control group (control 32.63 litres, Turbopro 34.00 litres).


8 8


9 9


10 10


11 11


results, show good results where it is used in high yielding herds, with typical average daily yields above 30 litres per cow. Cows milked well and fertility results were improved. These results show that Turbopro is improving liver efficiency


and helping top performing cows to plug the energy gap. An area of consideration for anyone milking and managing a herd of high yielding cows.


Turbopro can be added to minerals or in feed and is recommended


for cows producing more than 29 litres of milk daily in early or mid- lactation.


FEED COMPOUNDER JANUARY/FEBRUARY 2021 PAGE 39


kg/day


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