STOP TMR DIETS HEATING TO YEA-SACC® IS CERTIFIED BY THE CARBON TRUST TO REDUCE


GREENHOUSE GAS EMISSIONS. Alltech’s flagship brand, Yea-Sacc®


, has


been validated by the Carbon Trust to reduce cattle methane emissions and nitrogen excretion rates. Yea-Sacc is the only yeast culture designed for use in ruminant diets that has been awarded this certificate. The Carbon Trust, a global organisation that provides independent advice to businesses, governments and institutions on reducing carbon emissions, formed an opinion based on evidence from public research and on-farm trials demonstrating the efficacy of Yea-Sacc in ruminant diets. The findings on Yea-Sacc highlighted


that reduced emissions do not need to come at the expense of improved animal performance; Yea-Sacc was shown to increase milk yield, milk fat and protein content, and nitrogen uptake via improved ruminal bacteria. In dairy and beef animals, methane is an


indicator of waste not only for the animal, but also in terms of farm profitability. Increasing animal efficiency helps the animal retain more of that potential energy. This allows for both more environmentally sustainable production as well as increased profitability for the farm.


MONITOR ENERGY DENSITY OF


DAIRY RATIONS Producers are being warned to closely monitor energy levels, if bolstering rations with lower quality forages due to a shortage of silage. With AHDB reporting 2018 grass silage


stocks are down by up to 30%, coupled with fodder prices reaching record levels, producers may be looking to include cheaper forage sources in diets ahead of spring turnout. “Despite initial concerns last summer, forage quality was largely unaffected by the dry weather, with good average ME values from first and second cuts,” says Charlotte Ward, ruminant nutritionist at Trident Feeds. “However, overall yields were down, and


many producers are now concerned that they don’t have enough silage to last through to spring. Many are opting to include cheaper sources in rations such as baled silages, hay and straw.” In this instance, Miss Ward advises closely monitoring the energy density levels of the ration to ensure cow performance is not impacted. “It’s important to focus on maximising energy intakes, with a target ration energy density of between 11.7 to 12 MJ/kg DM. Although many diets containing 2018 forages may have fulfilled these requirements, where rations are being stretched out with lower quality forage, additional supplementary feeds may be required to prevent drops in milk yield and quality and fertility.”


REDUCE WASTE With forage stocks running low, taking action to reduce heating and waste will helps stocks go further, according to Alice Hibbert, Product Manager - Feed Additives at Trouw Nutrition GB. “Heating of silage reduces the stocks


available to feed, which will be a big issue in the final few weeks of winter feeding as clamps run empty,” she comments. “Heating silage can have a negative impact on performance, contaminating the rest of the diet and pushing up costs per litre.” She explains that heating leads to losses


in dry matter and a decline in feed value as energy is used up. For a typical herd feeding 22kg dry matter of a TMR per cow per day, a 5% reduction in dry matter would mean you are losing 1.1kgDM per cow per day. Additionally, there is an increased risk of feed rejections. “If half the lost dry matter is from


forage, a 200 cow herd would be wasting 100kg forage dry matter per day, which at an average of 30% dry matter equates to 330kg/day of fresh silage or 10 tonnes per month. This is forage few farmers can afford to lose this year.” As soon as silage is exposed to air it


begins to ferment because oxygen, which has been excluded in the clamp, is reintroduced. This allows the moulds and yeast present on the silage to multiply, rapidly using up energy and protein in the forage and other components in the ration. Miss Hibbert says this could be a


particular problem this year with more, higher dry matter silages which tend to be less well compacted in the clamp and more prone to spoilage. “If TMR diets are allowed to heat up


you end up feeding less of a lower quality feed, both of which will affect performance. In addition, feeds that have been subject to proliferation of yeasts develop an odour which reduces palatability and depresses intakes. To reduce the risk of contamination, she


advises clearing troughs out daily, removing any refusals which are likely to be the most contaminated material from the previous day and which will continue to deteriorate and contaminate fresh material put on top of it. “In the clamp, in addition to the absence


of oxygen it is the low pH that helps suppress the activity of yeasts. When you mix a TMR you can’t exclude oxygen, but you can influence pH.” She says adding a blend of buffered


organic acids during the mixing of the TMR reduces the activity of yeasts and reduces the extent of heating improving palatability of the ration. In trials, adding acids reduced the yeast population on the TMR by 40% and intakes of treated TMR were 6.5% higher that untreated diets. “Preventing TMRs heating up will help


retain full nutritional value and helps cows milk to their potential,” Miss Hibbert suggests.


NOVUS FORUM ON THE NEW EUROPEAN RULES IN SWINE


NUTRITION Novus International, Inc. hosted a European Swine Nutrition Forum in Eindhoven on February, 25-27, bringing together valued pig industry’s experts to exchange and discuss insights on the new European rules in swine nutrition and production. The aim of this event was to discuss


and exchange on the current situation of the European swine industry, focusing on swine new EU regulations, and to address how to tackle these new challenges. Around 60 participants from across


Europe attended this forum. Special invited speakers like Mario Ramírez, Jürgen Zentek, Xandra Benthem de Grave, Paul Bikker, Enric Marco and Sandra Edwards shared their valuable knowledge and experiences on the impact of new regulations or rules -reduction of antibiotics, zinc oxide ban, regulations on copper levels in feed, and welfare and environmental regulations, as well as on the challenges and nutritional requirements of hyperprolific sows. Novus showed the latest research , bis-chelated organic trace


on MINTREX®


minerals, in sows and piglets. In sows, the conclusions of a two-year field trial conducted in eighty-two Spanish commercial farms that compared three different sources of trace minerals were revealed. The results showed that sows fed with the MINTREX “Reduce and Replace strategy” had reduced mortality rates, lower culling rates and improved litter performance than sows fed with other trace minerals, both organic and inorganics. In piglets, data showed that replacing equivalent amount of inorganic copper by MINTREX®


Cu


maximises growth promoting effects. Also, a positive correlation was demonstrated between phytase and MINTREX®


Cu. Alimet®


Research data was also shown on (HMTBa, Hydroxy Analogue of


Methionine) in pigs, revealing higher feed intake, particularly at and above minimum methionine requirements, which leads to improved growth and feed efficiency in piglets when compared to DL-Methionine. Positive impact of HMTBa on sow productivity and offspring growth potential has been also discussed, among many other benefits. The delegation then visited the Swine


Innovation Center (VIC) in Wageningen University & Research. This multi-functional research center for modern, innovative and sustainable pig husbandry manage researchers on the latest developments in animal nutrition, health, housing, welfare and feeding systems. These discussions, exchanges and


visits have highlighted valuable key areas within the swine industry in Europe and helped develop effective approaches on animal performance and profitability.


PAGE 52 MARCH/APRIL 2019 FEED COMPOUNDER


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