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February 2, 2026DairyOpen Access

Preliminary Study of Microbiological and Immunological Quality of Sheep Colostrum: Influence on Early Postnatal Weight Change

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Authors

VLVictoria LuñoKHKaren HammandFMF.M. Martinez

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Overview

Preliminary evaluation shows colostrum quality impacts bacterial counts but not lamb weight gain.

Key Points

  • This study aims to evaluate the microbiological and immunological quality of sheep colostrum and its influence on lamb growth in the early postnatal period.
  • Collected colostrum from 28 Rasa Aragonesa ewes immediately after birth.
  • Assessed immunoglobulin concentration using Brix refractometry.
  • Determined bacterial counts using the 3M Petrifilm™ system.
  • Monitored lamb weight over the first 48 hours postpartum.
  • Mean aerobic count was 3.63 ± 0.69 log10 CFU/mL.
  • Mean coliform count was 1.59 ± 0.82 log10 CFU/mL.
  • Colostrum with high immunoglobulin concentration showed lower aerobic counts.
  • No significant differences in lamb weight gain according to colostrum quality.

Cite This Study

Luño et al. (2026) studied this question.

synapsesocial.com/papers/6980fc91c1c9540dea80e5c3https://doi.org/10.3390/dairy7010010
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Evaluation of the Effects of Colostrum Substitutes on Passive Immune Protection and Adaptive Immune Development in Neonatal Lambs2025
  2. 2The influence of colostrum-derived maternal cells on neonatal lamb immune responses to routine management practices2025
  3. 3Effect of Colostrum Components on Early Inflammatory Response, IgG Concentration and Weight Gain in Lambs2026
  4. 4Postponing first colostrum collection: impact on immunoglobulin G in goat colostrum2024 · 2 citations
  5. 5Colostrum quality in Northern Italy: The role of dry cow nutrition and colostrum feeding management2025 · 1 citations