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468 PROCEEDINGS OF INTERNATIONAL SCIENTIFIC CONFERENCE ON APPLIED BIOTECHNOLOGYand weaning weights of purebred HF. Further in-depth research on growth, reproduction, and milk production at the farm is needed to gain a more comprehensive view.Conflicts of Interest: The authors declare no conflict of interest.REFERENCES1. Barua, K. Investigation into calf management systems in some selected dairy farms of Chattogram district in Bangladesh. Chattogram Veterinary and Animal Sciences University 2022.2. Ceja, G., Boerman, J. P., Neves, R. C., Johnson, N. S., Schoonmaker, J. P., Jorgensen, M. W., & Johnson, J. S. A procedure to place urinary catheters in 1-and 6-week-old preweaned Holstein heifer calves for the in vivo evaluation of intestinal permeability. Journal of Animal Science 2022, 100(8), skac 213.3. Lee, J. H., Kim, S. Y., Park, M. S., & Choi, Y. J. Factors affecting dairy calf growth: A meta-analysis. Journal of Animal Science and Technology 2024, 66(1), 1-15. 4. Olson, K. M., Cassell, B. G., McAllister, A. J., & Washburn, S. P. Dystocia, stillbirth, gestation length, and birth weight in Holstein, Jersey, and reciprocal crosses from a planned experiment. Journal of Dairy Science (2009), 92, 6167%u20136175. 5. Patel, S., Johnson, R., & Smith, A. Relationship between average daily gain and weaning weight in dairy calves. Animal Science Journal (2024)., 95(2), 231-242. https://doi.org/10.1111/asj.13848.6. Santos, F. C. R. D., Santarosa, B. P., Dal M%u00e1s, F. E., Silva, K. N. D., Guirro, %u00c9. C. B. D. P., & Gomes, V. Effects of dam metabolic profile and seasonality (Spring vs. Winter) on their offspring%u2019s metabolism, health, and immunity: maternal factors in dairy calves%u2019 analytes. Frontiers in Veterinary Science (2024)., 11, 1424960.