Calfhood diseases have a major impact on the economic viability of cattle operations. This is the first in a three part review series on calf health from birth to weaning, focusing on preventive measures. The review considers both pre- and periparturient management factors influencing calf health, colostrum management in beef and dairy calves and further nutrition and weaning in dairy calves.

This experiment was conducted on 60 Hanwoo calves comprising five feed additive groups, with 12 calves in each group, to determine the effects of additives at preand post-weaning on growth performance and blood profile. The groups were control, antibiotic (Neomycin 110 ppm), illite (2%), fermented green tea probiotics (FGTP, 0.5%), and mixed additives (FGTP 0.25%, illite 1% and licorice 0.1%). ...

BACKGROUND: Many additives have been recommended to calf feed but the effects of each supplement have been under investigation especially during weaning stress. OBJECTIVES: The effects of dietary supplementation of probiotic (Protexin) and chromium-methionine che- late (Cr-Met) on triiodothyronine (T3), thyroxine (T4), total protein, albumin, zinc, and gr...

It is well documented that dairy calves are extremely susceptible to enteric diseases and mortality during the first few weeks of life. The latest reports from the USDA’s National Animal Health and Monitoring System (NAHMS, 1993; 1996; 2007) report that the national mortality rate of heifer calves from 48 hours of life to weaning is approximately 7.8 to 10.8%. Producer perceived records indicat...

Abstract The purpose of this experiment was to study the changes fecal bcteria calves before and after weaning. Among 365 Holstein born in 2021, 8 with similar body weight were selected weaning (60 ± 2 d) (120 6 d), rectal manure collected. Fecal samples for volatile fatty acids microorganisms. results showed that: 1) Sobs index, Ace Chao1 Simpson index Shannon pre-weaning post-weaning signific...

ABSTRACT: This study measured milk and solid feed intake in pre- weaning period postweaning of Nellore calves, to correlated them with performance traits ingestive behavior animals classified as most least efficient. During pre phase, efficiency was evaluated 51 cow-calf pairs from 21±5 days after calving until weaning. post-weaning only male calves (n=23) were evaluated. Pre-weaning estimated ...

Abstract A study was conducted to evaluate the effects of a live yeast supplement in preweaning and finishing diets Holstein bull calves on growth performance, carcass quality attributes physiochemical traits. bulls (n = 39) at 5 days age were randomly allocated one two treatment groups with 20 receiving no 19 supplement. The inclusion level pre-weaning diet 54 mg/calf/day added milk replacer. ...