Effect of lunar cycle on some reproductive aspects of female goats

El-Darawany, A. A.; Al-Marakby, Khaled M.; Atta, Mostafa A.

doi:10.1080/09291016.2019.1600264

Cited by 2 publications

(1 citation statement)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results demonstrated that the lunar cycle influenced the reproductive performance of cattle under tropical conditions. Moreover, these results support previously published findings about the effects of the lunar phases on reproductive physiology in animals and humans (Law, 1986; Martínez-Soriano et al, 2002; Causeur and Charpentier, 2009; Palacios and Abecia, 2014; Yonezawa et al, 2016; Chinchilla-Vargas et al, 2018; El-Darawany et al, 2019).…”

Section: Discussionsupporting

confidence: 91%

Lunar Cycle Influences Reproductive Performance of Crossbred Brahman Cows Under Tropical Conditions

Aguirre¹,

Palomares

Ondiz

et al. 2021

J Biol Rhythms

View full text Add to dashboard Cite

Evidence has accumulated over the years indicating that the moon influences some aspects of the reproductive activity in animals and humans. However, little is known about the influence of the lunar cycle on the reproductive performance of cows under tropical conditions, where the environment strongly affects reproduction. This retrospective study was conducted with the aim of assessing the influence of the lunar cycle on some reproductive traits of tropical crossbred cows managed in a pasture-based system. Data from 5869 reproductive records from two commercial farms localized in the Maracaibo Lake Basin of Zulia State, Venezuela, were analyzed. Variables studied were first service conception rate, calving frequency, first postpartum estrous frequency, and pregnancy frequency. In addition to the lunar cycle, the effects of farm, season, and predominant breed were also considered. Data were analyzed using logistic regression and general linear model from SAS. First service conception was affected by lunar phases and predominant breed, but not by farm or season. For frequencies of calving, first postpartum estrus, and pregnancy, there was no main effect of farm, season, and predominant breed, whereas the effect of lunar phases was highly significant. First service conception was significantly greater in waning than in crescent phase of the lunar cycle. Frequencies of calving, first estrus, and pregnancy were highly correlated and showed greater figures around full moon and new moon. In conclusion, lunar cycle influenced first service conception, attaining greater values in the waning phase of the moon cycle. Frequencies of calving, first postpartum estrus, and pregnancy in crossbred cows showed a clear bimodal rhythm, whose greatest values coincided with new moon and full moon.

show abstract