Trace Element Concentrations in Beef Cattle Related to the Breed Aptitude.

Biological Trace Element Research
V PereiraM Miranda

Abstract

Animal feed has traditionally been supplemented with trace elements at dietary concentrations well above physiological needs. However, environmental concerns have led to calls for better adjustment of mineral supplementation to actual physiological needs and, in this context, consideration of breed-related differences in trace element requirements. The aim of this study was to analyze trace element concentrations in the main breeds used for intensive beef production in northern Spain (Holstein-Friesian [HF], Galician Blonde [GB], and GB × HF cross). Samples of blood, internal organs, and muscle were obtained at slaughter from 10 HF, GB, and GB × HF cross calves in the same feedlot. Overall, trace element concentrations in serum and internal organs were within adequate ranges and did not differ between those of breeds, suggesting that trace mineral supplementation was adequate in all groups. The only exception to this was copper, and hepatic copper concentrations were above adequate levels in all calves. This was particularly evident in the HF calves, and the maximum recommended level for human consumption was exceeded in 90% of these animals. Copper, iron, manganese, selenium, and zinc concentrations in muscle were significantl...Continue Reading

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Jan 1, 2012·Animals : an Open Access Journal From MDPI·Leo O Fiems

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Citations

Dec 11, 2019·Animals : an Open Access Journal From MDPI·Nageshvar PatelGiovanni Bittante
Oct 21, 2020·Animals : an Open Access Journal From MDPI·Marta López-Alonso, Marta Miranda
May 4, 2021·Archives of Animal Nutrition·Marta Juszczak-Czasnojć, Agnieszka Tomza-Marciniak

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