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March 22, 2026TheriogenologyOpen Access

Maternal parity modulates the impact of lactation management on fetal programming of postnatal performance in Nelore bulls

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Authors

ACAlessandro CarrerUniversity of PaduaRARubens Paes de ArrudaGPGuilherme PugliesiUniversidade de São Paulo

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Overview

The study shows early weaning impacts body weight and testosterone in Nelore bulls, highlighting fetal programming's role.

Key Points

  • This research aims to evaluate the effects of maternal parity and weaning methods on the growth and hormone levels in Nelore bulls.
  • Evaluated Nelore bull offspring from primiparous and multiparous cows.
  • Compared early weaning (150 days) and conventional weaning (240 days) effects.
  • Assessed body weight and testosterone levels at multiple ages (12.5 to 17.3 months).
  • Utilized a 2 × 2 factorial design for statistical analysis.
  • Early weaned offspring from primiparous cows had an average body weight of 319.9 kg compared to 304.6 kg in conventionally weaned offspring.
  • Offspring from multiparous cows exhibited higher testosterone levels (4.8 ng/mL) versus primiparous cows (3.6 ng/mL).
  • Fetal programming influenced body weight and testosterone levels, but not the timing of puberty.

Cite This Study

Carrer et al. (2026) studied this question.

synapsesocial.com/papers/69bf8692f665edcd009e8de8https://doi.org/10.1016/j.theriogenology.2026.117905
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Also Consider

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

  1. 1Fetal programming through early weaning shapes the metabotype of Nelore heifers2025 · 2 citations
  2. 2Effects of Early Weaning on Performance and Carcass Quality of Nellore Young Bulls2024 · 6 citations
  3. 3Fetal programming and adult health2001 · 1,016 citations
  4. 4Meat Science And Muscle Biology Symposium: Developmental programming in cattle: Consequences for growth, efficiency, carcass, muscle, and beef quality characteristics1,22012 · 85 citations
  5. 5Review: Ontology and endocrinology of the reproductive system of bulls from fetus to maturity2018 · 30 citations