Abstract

The objective of this study was to evaluate the effects of injectable trace minerals (ITM) administrations at strategic moments in the beef cattle production cycle. At calving, 50 primiparous cows (Angus × Hereford) and their calves were randomly assigned to 1 of 2 treatments: 1) ITM: cattle assigned to the ITM treatment received an ITM injection at calving and a subsequent administration at breeding (cattle over 2 yr: 1.0 mL/90 kg body weight [BW]; calves: 1.0 mL/45 kg BW); or 2) Control: cattle assigned to the control treatment were administered with saline following the same procedure as the cattle assigned to the ITM treatment. Body weight, blood, and liver samples were collected from dams and calves at multiple time points to evaluate the growth and mineral status of cow–calf pairs. All variables were analyzed using the MIXED procedure of SAS. A treatment effect (P = 0.02) was observed for Cu liver concentration of primiparous cows at breeding. Cows assigned to ITM treatment had greater Cu status than cohorts assigned to Control treatment. No treatment effects were observed for the mineral status or growth of calves. The administration of ITM to primiparous cows enhanced Cu status when grazing Cu forages scarce of Cu.

Details

Title
Effects of Trace Mineral Injections on Measures of Growth and Trace Mineral Status of Primiparous Cows and their Calves
Author
Hernandez, Gracia P 1 ; Ferreira, Matheus F L 2 ; Santos, Aline C R 1 ; Bohnert, David 1 ; Ranches, Juliana 1 

 Eastern Oregon Agricultural Research Center, Oregon State University , Burns, OR 97720 , USA 
 Louisiana State University, Hill Farm Research Station , Homer, LA 71040 , USA 
Publication year
2024
Publication date
2024
Publisher
Oxford University Press
e-ISSN
25732102
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3174466236
Copyright
© The Author(s) 2024. Published by Oxford University Press on behalf of the American Society of Animal Science. This work is published under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.