Goilean GV, Cristina RT, Doma AO, Dumitrescu E, Moruzi RF, Degi DM, Orăsan SA, Muselin F.

Animal Husbandry and Fodder Production. 2022. Vol. 105, no 3. Р. 34-39.

Original article

doi:10.33284/2658-3135-105-3-34

Effects of glycine chelated Zn, Cu, Mn and Fe supplementation on some milk parameters

and serum trace elements levels in dairy cows

 George V Goilean¹, Romeo T Cristina², Alexandru O Doma³, Eugenia Dumitrescu⁴, Răzvan F Moruzi⁵, Diana M Degi⁶, Sergiu A Orăsan⁷, Florin Muselin^8,9

^{1,2,3,4,5,6,7,8} University of Life Sciences “King Michel I of Romania” from Timisoara (Timisoara, Romania)

⁹Working Group for Xenobiochemistry, Romanian Academy-Branch Timisoara (Timisoara, Romania)

²https://orcid.org/0000-0002-5420-1516

³https://orcid.org/0000-0001-5252-6969

⁴https://orcid.org/0000-0002-8346-6230

⁵https://orcid.org/0000-0001-7769-6358

⁶https://orcid.org/0000-0002-6975-4914

⁷https://orcid.org/0000-0002-6704-0459

^8,9florin.muselin@gmail.com, https://orcid.org/0000-0003-2907-4233

 Abstract. The paper presents data regarding the impact of some trace mineral supplementation on milk production and quality parameters and also the status of some minerals in the serum of glycine chelated mineral supplemented dairy cows. The study was made on thirty Holstein multiparous dairy cows,  having arround 62 ± 4.5 months old divided randomly in two groups: C – Control receiving normal diet without glycine mineral supplementation and one experimental group (E) that received supplement of glycine chelated Cu, Zn, Mn and Fe as follows: 15 mg/kg Cu, 60 mg/kg Zn, 20 mg/kg Mn and, 100 mg/kg Fe, added in concentrate feed. The experiment starts from day 30 of lactation until day 100 of lactation and were assesed the milk production and milk quality parameters (milk fat, protein, lactose, freezing point and not-fat solids percentages, somatic cell count, total bacterial count), and serum levels of iron (Fe), manganese (Mn), copper (Cu), zinc (Zn), and selenium (Se). In experimental group we observed significant (P≤0.05) increase of milk yield and fat, and a not significant (P≥0.05) increase of protein and not-fat solids (NFS) percentage, as well as a significant decrease of somatic cell count (SCC) and total bacterial count (TBC). The serum content of selected minerals in day 30, 65 and 100 of lactation we observed to be significantly (P≤0.05) increased for Se, Zn and Fe, especially in the day 100 of lactation and decreased for Cu and Mn. We can conclude that introduction of a chelated mineral supplement, could increase the milk production and the milk quality parameters.

Key words: milk parameters, dairy cows, supplements, minerals

Acknowledgments: Special thanks for their help and support to Mr. David Chirilă and Mrs. Mihaela Scurtu from AMS 2000 Trading Impex SRL, Jebel, Romania.

For citation: Goilean GV, Cristina RT, Doma AO, Dumitrescu E,  Moruzi RF, Degi DM, Orăsan SA, Muselin F. Effects of glycine chelated Zn, Cu, Mn and Fe supplementation on some milk parameters and serum trace elements levels in dairy cows. Animal Husbandry and Fodder Production. 2022;105(3):34-39. https://doi.org/10.33284/2658-3135-105-3-34

Information about the authors:

George V Goilean, PhD student, Department of Toxicology, Faculty of Veterinary Medicine, University of Life Sciences “King Michel I of Romania” from Timisoara, 300645, Timisoara, Romania, Calea Aradului 119

Cristina T Romeo, PhD, DVM, Professor, Head of Department of Toxicology, Faculty of Veterinary Medicine, University of Life Sciences “King Michel I of Romania” from Timisoara, 300645, Timisoara, Romania, Calea Aradului 119

Doma A Octavian, PhD, DVM, Assistant Professor, Faculty of Veterinary Medicine, University of Life Sciences “King Michel I of Romania” from Timisoara, 300645, Timisoara, Romania, Calea Aradului 119

Dumitrescu Eugenia, PhD, DVM, Associate Professor, Departments of Pharmacology and Pharmacy, Faculty of Veterinary Medicine, University of Life Sciences “King Michel I of Romania” from Timisoara, 300645, Timisoara, Romania, Calea Aradului 119

Razvan F Moruzi, PhD student, Departments of Pharmacology and Pharmacy, Faculty of Veterinary Medicine, University of Life Sciences “King Michel I of Romania” from Timisoara, 300645, Timisoara, Romania, Calea Aradului 119

Diana M Degi, Departments of Toxicology, Faculty of Veterinary Medicine, University of Life Sciences “King Michel I of Romania” from Timisoara, 300645, Timisoara, Romania, Calea Aradului 119

Sergiu A Orasan, Departments of Pharmacology and Pharmacy, Faculty of Veterinary Medicine, University of Life Sciences “King Michel I of Romania” from Timisoara, 300645, Timisoara, Romania, Calea Aradului 119

Florin Muselin, PhD, DVM, MS, Associate Professor, Department of Toxicology, Faculty of Veterinary Medicine, University of Life Sciences “King Michel I of Romania” from Timisoara, 300645, Timisoara, Romania, Calea Aradului 119; Romanian Academy-Branch Timisoara, 300223, Timişoara, România, Bv. Mihai Viteazu 24.

The article was submitted 12.08.2022; approved after reviewing 19.08.2022; accepted for publication 12.09.2022.