Postpartum hormone and energy profiles and their influence on the resumption of ovarian cyclicity in Curraleiro Pé-Duro cows

The objective of this study was to evaluate hormone and energy profiles in the postpartum period and to correlate these profiles with the resumption of ovarian cyclicity, as well as characterizing the postpartum short estrous cycle of Curraleiro Pé-Duro cows. Twelve Curraleiro Pé-Duro cows were exam...

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Bibliographic Details
Published in:Theriogenology 2017-06, Vol.95, p.133-140
Main Authors: Teixeira, Heitor Castro Alves, Barbosa, Eleonora Araújo, Souto, Paula Lorenna Grangeira, Mariante, Arthur da Silva, Ramos, Alexandre Floriani
Format: Article
Language:English
Subjects:
Animals
Cattle - genetics
Cattle - metabolism
Cattle - physiology
Energy Metabolism - physiology
Energy profile
Estrous Cycle - physiology
Female
Genetic resources
Locally adapted breed
Menstrual Cycle - physiology
Metabolic profile
Ovulation - physiology
Postpartum Period - metabolism
Postpartum Period - physiology
Progesterone - blood
Short estrous cycle
Thyroxine - blood
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Summary:The objective of this study was to evaluate hormone and energy profiles in the postpartum period and to correlate these profiles with the resumption of ovarian cyclicity, as well as characterizing the postpartum short estrous cycle of Curraleiro Pé-Duro cows. Twelve Curraleiro Pé-Duro cows were examined via rectal palpation and ultrasound at 10 days postpartum, and subsequently examined daily to evaluate the resumption of ovarian cyclicity as well as every five days in order to evaluate uterine involution. Upon analysis of the data, it was possible to observe the formation of two distinct groups, one of which was comprised of those animals which returned to cyclicity within 60 days postpartum and another comprised of those animals which returned to cyclicity more than 105 days postpartum. Therefore, animals were divided into two groups; precocious, designated Ov Group, and delayed, designated NOv Group, wherein the cut-off time for all tests was 60 days postpartum. Statistically significant differences (P  0.05) between the groups. NEFA, BHBA and thyroxine concentration levels did not differ (P > 0.05) between the groups in any of the statistical analyses. However, in the analysis comparing growth curves, triglycerides levels were higher for the Ov Group (P = 0.04) and cholesterol levels were higher for the NOv Group (P = 0.02). In this experiment, a small influence of a negative energy balance between the groups was observed, suggesting that these animals can present significant genetic variability due to natural selection, as evidenced by the formation of groups of animals with precocious and delayed reproductive characteristics. •The cows showed macroscopic uterine involution occurring within 45 days.•The cows of the Ov Group presented the 1st postpartum ovulation within 60 days.•The cows of NOv Group had the 1st postpartum ovulation only with 105 days.•NEFA and BHBA weren't statistically different (P > 0.05) between groups.•A small influence of negative energy balance between the groups was observed.
ISSN:0093-691X
1879-3231
DOI:10.1016/j.theriogenology.2017.03.013