Uterine Involution in Hosltein cows in the province of Carchi, Ecuador

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Uterine Involution in Hosltein cows in the province of Carchi, Ecuador

Authors
  • Balarezo U, Luís1
  • García-Díaz, Juan2
  • Hernández-Barreto, Miguel2
  • Vargas-Hernández, Silvino2
Type
Published Article
Journal
Revista Mvz Córdoba
Publisher
Universidad de Cordoba
Publication Date
May 01, 2018
Accepted Date
Oct 01, 2017
Volume
23
Issue
2
Pages
6649–6659
Identifiers
DOI: 10.21897/rmvz.1339
Source
MyScienceWork
Keywords
License
Green

Abstract

Objective. To evaluate the uterine involution in Holstein cow, under the conditions of production of the bovine dairy cattle in the province El Carchi, Ecuador. Materials and Methods. Sixty cows were selected and the time for uterine involution was determined by the recto-vaginal examination, ultrasonography and the clinical score of the regression of the uterus. The statistical parameters for each variable were determined. The effect of parity and body condition (CC) on complete uterine involution was evaluated by multifactorial ANOVA and the LSD test to compare means. Results. The clinical involution of the uterus, without taking into account the clinical score occurred at 29.86±7.71 days but considering this notation was at 42 ± 0.39 days. The uterine involution took place earlier (p<0.05) in cows with BCS ≥ 3.5 at birth than in those with BCS <3.5. In second calving cows it was at 25.17±1.32 days and it was extended (p<0.05) for the third and fourth calving. The occurrence of the dominant follicle and ovulation occur at 16.63 ± 3.83 and 27.76±7.71 days, respectively. Conclusions. The clinical involution of the uterus occurred in less time when the recto-vaginal examination was considered, compared when it was evaluated taking into account the clinical score. The uterine involution process is influenced by parity and body condition at calving.

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