Investigating the addition of a herbal supplement containing tannin (from 3 different sources) on growth performance, health and safety status in Holstein suckling calves

Articles in Press

Document Type : Research Paper

Authors

1 Animal Science Department, Faculty of Agriculture, Lorestan University, Khorramabad, Islamic Republic of Iran

2 Animal Science Department,Faculty of Agriculture, Lorestan University, Khorramabad, Islamic Republic of Iran

Abstract

This study conducted to use three sources tannin on functional characteristics, blood metabolites and health parameters of Holstein calves. 36 female Holstein calves were assigned to three experimental treatments : ( 1) control group 2) calves fed with tannin supplementation ( 50% oak kernel + 30% elm and 20% pomegranate peel) for 30 days daily 30 gr and 3) calves they were fed tannin supplement for 30 days daily for 60 gr) in a completely randomized design. All calves were weaned at 70 days of age. Feed efficiency, daily weight gain and weaning weight was higher for calves treated with tannin supplementation compared to the control group but Treatments had no significant effect on the amount of dry matter consumed. The highest daily weight gain was observed in the third treatment. Clutch height and cap height were higher in the third treatment compared to calves in the other two groups, but other traits related to skeletal growth were not affected by experimental treatment. Stool scores, days of diarrhea and rectal temperature were affected by experimental treatments. Total white blood cell and neutrophil counts were significantly higher in calves receiving Tannin supplementation was lower. In general, the use of a combination supplement of oak, pomegranate peel and elm improves the performance of calves and leads to strengthening the immune system and reducing disease.

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Main Subjects

Iranian Journal of animal Science

Articles in Press, Accepted Manuscript
Available Online from 26 August 2025

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History

  • Receive Date: 03 December 2024
  • Revise Date: 20 August 2025
  • Accept Date: 21 August 2025

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