We sell animal feed-grade minerals to feed millers and premixers

Animal feed-grade mineralsResco is continuously growing and as a result of this we recently partnered up with a worldwide leader in minerals, in order to bring their products to the market of animal feed. Supplementing animal feed with minerals has been proven to be beneficial in many ways. Resco’s feed-grade minerals are therefore of the highest standards, ensuring the quality of your products. We offer our quality trace minerals in concentrated form, with the advantages of less needed storage space and lower shipping volumes, and thus helping you in optimizing business efficiency.

We are looking to deliver our feed-grade minerals to feed millers and premixers that provide those quality products.


Animal feed grade cobaltCobalt Carbonate animal feed grade 46% 52%

Cobalt Sulphate Heptahydrate animal feed grade ACF quality 21 %

Cobalt Sulphate Monohydrate animal feed grade 33 %

Cobalt plays a role in the development of vitamin B12 and is an essential trace element for ruminants, which can synthesize vitamin B12 (NRC, 1980 and 1989). Furthermore, cobalt can increase fiber digestion of low-quality forages (Lopez-Guisa and Satter, 1992; Zelenak et al., 1992). A deficiency can reduce fertility, decrease conception rate and cause overall subpar conditioning of the calve (Puls, 1994). FEEDAP (2009 and 2012) concludes that “the potential cobalt supplementation to diets for ruminants (…) should be maintained.”


Animal feed-grade iodineCalcium Iodate Anhydrous animal feed grade 63 %

Calcium Iodate Monohydrate animal feed grade 62 %

Potassium Iodide Stabilized animal feed grade 69 %


Iodine is known to be an important factor in the energy metabolism of cells, in the growth and in brain development in animals (Mc Dowell, 2003; Underwood and Suttle, 2001). Furthermore, it has an influence on the development of the fetus (Puls, 1994) and the conception rate (Yasothai, 2014). Iodine supplementation to food-producing animals like poultry (Čepulienė et al., 2008) also plays an important role in battling iodine deficiency in humans (Flachowsky, 2007).


Animal feed-grade seleniumSodium Selenite animal feed grade 45 %

Selenium supplementation improves conception rate (McClure et al., 1986) and reduces the incidence of retained placenta, mastitis, metritis (Puls, 1994), and white muscle disease (Gerloff, 1992). Furthermore, selenium deficiency is also known to cause abortions, embryonic fetal loss, poor fertility, and overall weaker calves (Yasothai, 2014). Selenium in combination with vitamin E reduced calf death losses and slightly increased calf weights (Spears et al., 1986; Gerloff, 1992). In sheep improvements in growth and fertility are most likely (Wichtel, 1999). For poultry, Surai (2002) concludes that “adequate Se supplementation is considered to be a crucial factor in maintaining the highly productive and reproductive characteristics of commercial poultry”. Furthermore, Surai and Fisinin (2014) indicate the important role of selenium in the fertility of breeding stock and on improving hatchability through the reduction of oxidative stress. Lastly, in a 2015 review, Habibian (et al.) finds that selenium supplementation has numerous positive effects on heat-stressed poultry.


Animal feed-grade zincZinc oxide animal feed grade 72 % 75 % 78 %

Zinc is an essential nutrient for animals involved in many biochemical reactions. This means that a zinc deficiency has various negative effects including reduced growth and increased susceptibility to infection (Miller, 1970). Perry (et al., 1968) found that zinc supplementation leads to an increase in daily gain for fattening beef cattle. Also in poultry zinc has numerous major effects on, among others, antioxidation, production, and stress-related problems (Naz et al., 2016). A 2009 review (Sahin et al.) finds that dietary zinc in poultry is required for a normal immune function and proper skeletal development and maintenance. While Abd El-Hack (et al.) also describe the effect of improved fertility, feathering, and appetite in his 2017 review.


Animal feed-grade copperCopper Sulphate animal feed grade 24 %

A copper deficiency in cattle is mostly linked to reproductive problems such as early embryonic death (Miller et al., 1988), increased chances of retained placenta (O’ Dell, 1990), and delayed or depressed estrus (McChowell and Hall, 1970). Furthermore, Engle and Spears (2000) showed that copper supplementation in beef cattle decreased cholesterol and alters the fatty acid composition, both with possible health benefits for humans. It should however be noted that copper poisoning in cattle as an effect of supplementation to battle a deficiency is becoming more prevalent. As such a proper measuring of the supplementation is crucial (López-Alonso and Miranda, 2020). Just like in beef cattle, a lower yolk cholesterol concentration was found in the eggs of copper-supplemented chickens (Balevi and Coskun, 2004) and in the meat (Samanta et al., 2011). Dietary Cu may also be beneficial for production performance in poultry (Samanta et al., 2011).


Abd El-Hack, M. E., Alagawany, M., Arif, M., Chaudhry, M. T., Emam, M., & Patra, A. (2017). Organic or inorganic zinc in poultry nutrition: a review. World’s Poultry Science Journal, 73(4), 904–915. https://doi.org/10.1017/s0043933917000769

Balevi, T., & Coskun, B. (2004). Effects of dietary copper on production and egg cholesterol content in laying hens. British Poultry Science, 45(4), 530–534. https://doi.org/10.1080/00071660412331286253

Čepulienė, R., Bobinienė, R., Sirvydis, V., Gudavičiūtė, D., Miškinienė, M., & Kepalienė, I. (2008). Effect of stable iodine preparation on the quality of poultry products. Veterinarija Ir Zootechnika, 42(64), 38–43. https://vetzoo.lsmuni.lt/data/vols/2008/42/pdf/cepuliene.pdf

Engle, T. E., & Spears, J. W. (2000). Dietary copper effects on lipid metabolism, performance, and ruminal fermentation in finishing steers. Journal of Animal Science, 78(9), 2452. https://doi.org/10.2527/2000.7892452x

FEEDAP. (2009). Scientific Opinion on the use of cobalt compounds as additives in animal nutrition. EFSA Journal, 7(12), 1383. https://doi.org/10.2903/j.efsa.2009.1383

Flachowsky, G. (2007). Iodine in animal nutrition and Iodine transfer from feed into food of animal origin. Lohmann Information, 42(2), 47–59. http://www.lohmann-information.com/content/l_i_42_2007-10_artikel11.pdf

Gerloff, B. J. (1992). Effect of selenium supplementation on dairy cattle. Journal of Animal Science, 70(12), 3934–3940. https://doi.org/10.2527/1992.70123934x

Habibian, M., Sadeghi, G., Ghazi, S., & Moeini, M. M. (2015). Selenium as a feed supplement for Heat-Stressed poultry: A review. Biological Trace Element Research, 165(2), 183–193. https://doi.org/10.1007/s12011-015-0275-x

López-Alonso, M., & Miranda, M. (2020). Copper supplementation, a challenge in cattle. Animals, 10(10), 1890. https://doi.org/10.3390/ani10101890

Lopez-Guisa, J. M., & Satter, L. D. (1992). Effect of Copper and Cobalt Addition on Digestion and Growth in Heifers Fed Diets Containing Alfalfa Silage or Corn Crop Residues. Journal of Dairy Science, 75(1), 247–256. https://www.journalofdairyscience.org/article/S0022-0302(92)77759-5/pdf

McChowell, J. M., & Hall, G. A. (1970). Infertility associated with experimental copper deficiency in cattle, sheep, guinea pigs and rats. In Trace element metabolism in animals (C. F. Mills ed., pp. 106–109). ed. E. S. Livingstone, Edinburg.

McClure, T. J., Eamens, G. J., & Healy, P. J. (1986). Improved fertility in dairy cows after treatment with selenium pellets. Australian Veterinary Journal, 63(5), 144–146. https://doi.org/10.1111/j.1751-0813.1986.tb02952.x

McDowell, L. R. (2003). Minerals in Animal and Human Nutrition. Elsevier Health Sciences.

Miller, J. K., Ramsey, N., & Madsen, F. C. (1988). . In The ruminant animal: Digestive physiology and nutrition (Church D C ed., pp. 342–400). Englewood Cliffs (N.J.): Prentice-Hall.

Miller, W. J. (1970). Zinc nutrition of cattle: A review. Journal of Dairy Science, 53(8), 1123–1135. https://doi.org/10.3168/jds.s0022-0302(70)86355-x

National Research Council. (1980). Mineral tolerance of animals. National Academy of Sciences.

National Research Council. (1989). Nutrient requirements of dairy cattle (Vol. 6). National Academy Press.

Naz, S., Idris, M., Khalique, M. A., Zia-Ur-Rahman, Alhidary, I. A., Abdelrahman, M. M., Khan, R. U., Chand, N., Farooq, U., & Ahmad, S. (2016). The activity and use of zinc in poultry diets. World’s Poultry Science Journal, 72(1), 159–167. https://doi.org/10.1017/s0043933915002755

O’Dell, L. (1990). . In Present Knowledge in Nutrition (M L Brown ed., pp. 261–267). International Life Sciences Institute-Nutrition Foundation.

Perry, T. W., Beeson, W. M., Smith, W. H., & Mohler, M. T. (1968). Value of zinc supplementation of natural rations for fattening beef cattle. Journal of Animal Science, 27(6), 1674. https://doi.org/10.2527/jas1968.2761674x

Puls, R. (1994). Mineral Levels in Animal Health, Diagnostic Data. Sherpa International.

Sahin, K., Sahin, N., Kucuk, O., Hayirli, A., & Prasad, A. S. (2009). Role of dietary zinc in heat-stressed poultry: A review. Poultry Science, 88(10), 2176–2183. https://doi.org/10.3382/ps.2008-00560

Samanta, B., Biswas, A., & Ghosh, P. R. (2011). Effects of dietary copper supplementation on production performance and plasma biochemical parameters in broiler chickens. British Poultry Science, 52(5), 573–577. https://doi.org/10.1080/00071668.2011.608649

Spears, J. W., Harvey, R. W., & Segerson, E. C. (1986). Effects of marginal selenium deficiency and winter protein supplementation on growth, reproduction and selenium status of beef cattle. Journal of Animal Science, 63(2), 586–594. https://doi.org/10.2527/jas1986.632586x

Surai, P. F. (2002). Selenium in poultry nutrition 1. Antioxidant properties, deficiency and toxicity. World’s Poultry Science Journal, 58(3), 333–347. https://doi.org/10.1079/wps20020026

Surai, P. F., & Fisinin, V. I. (2014). Selenium in poultry breeder nutrition: An update. Animal Feed Science and Technology, 191, 1–15. https://doi.org/10.1016/j.anifeedsci.2014.02.005

Underwood, E. J., & Suttle, N. F. (2001). The Mineral Nutrition of Livestock. CABI Pub.

Wichtel, J. J. (1998). A review of selenium deficiency in grazing ruminants part 1: New roles for selenium in ruminant metabolism. New Zealand Veterinary Journal, 46(2), 47–52. https://doi.org/10.1080/00480169.1998.36055

Yasothai, R. (2014). Importance of minerals on reproduction in dairy cattle. International Journal of Science, Environment and Technology, 3(6), 2051–2057. http://www.ijset.net/journal/446.pdf

Zeleňák, I., Plachá, I., Sviatko, P., Vendrák, T., Siroka, P., & Gyulai, F. (1992). The effect of copper and cobalt supplementation on the digestibility of fibrous feed in sheep. Vet Med (Prague), 37, 221–229. https://pubmed.ncbi.nlm.nih.gov/1641952/


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