EFFECT OF THE LUNAR PERIOD ON SHEEP REPRODUCTION
DOI:
https://doi.org/10.56238/levv16n51-016Keywords:
Moon Phases, Crossbred Sheep, Offspring Sex, Paraíba Backlands, Sheep ReproductionAbstract
The study aimed to evaluate the reproductive performance of sheep according to the lunar phases. Twenty crossbred Dorper females, 20 crossbred Santa Inês females aged between 2 and 4 years, and two two-year-old PO male Dorper and Santa Inês males were used. The study was conducted at the Sheep Production Education Unit of the Animal Science Department of the Federal Institute of Paraíba, Sousa-PB Campus (IFPB), and lasted three and a half years. Controlled breeding procedures were used, where the males were confined in their own stalls, and each female in estrus, identified by the bullfighter in a semi-intensive grazing system, was led and placed with the male for a period of 12 hours. The breeding animals were kept in stables according to the breeder's breed criteria, with no breeding season or estrus stimulation through hormones. There was also no crossbreeding (mating between breeds). Data collection was performed according to the lunar phases established by the Brazilian National Observatory (ONB), which corresponded to the lunar phase with maximum thirst up to two days before and two days after the date of interest. The variables studied were offspring sex (SP), gestation length (TG), and birth weight (BW). Statistical analysis used to evaluate the proportion of male and female births related to the lunar phase used Fisher's exact test at a 5% probability level. Analysis of variance was used to assess the effects of lunar phase, type of delivery, and breed on birth weight and gestation length, with post-hoc Tukey's test at a 5% probability level of significance. R software (R Core Team; 2023) was used for all analyses. Laboratory analyses were performed at the Animal Parasitology Laboratory of the Department of Veterinary Medicine of the Federal Institute of Paraíba (IFPB). Based on the results obtained, it was possible to determine that the waning moon phase influences the reproductive process of sheep.
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References
AGUILAR, J.J.; CUERVO-ARANGO, J.; SANTA JULIANA, L. Lunar cycles at mating do not influence sex ratio at birth in horses. Chronobiology International, Early Online: 1–5, 2014.
Arliss JM, Kaplan EN, Galvin SL. The effect of the lunar cycle on frequency of births and birth complications. Am J Obst Gynecol, v.192, p.1462-1464, 2005.
BASTOS, A. M., LIMA, J. F, DIAS, M. T. A influência do ciclo lunar na reprodução e tempo incubação (decapoda:palaemonidae). de ovos Conhecimento de Macrobrachium amazonicum e manejo sustentável da biodiversidade amapaense. São Paulo: Blucher, Cap. 8, p. 145-159, 2017.
Bermejo-Alvarez P, Rizos D, Rath D, Lonergan P, Gutierrez-Adan A. Transcriptional sexual dimorphism during preimplantation embryo development and its consequences for developmental competence and adult health and disease. Reproduction, v.141, p.563-570, 2011.
Bueno A, Iessi IL, Damasceno DC. Influência do ciclo lunar no parto: mito ou constatação científica? Rev Bras Enferm, v.63, p.477-479, 2010.
Cajochen C, Altanay-Ekici SI, Münch M, Frey S, Knoblauch V, Wirz-Justice A. Evidence that the lunar cycle influences human slepp. Current Biology, v.23, p.1485-1488, 2013.
Cameron EZ. Facultative adjustment of mammalian sex ratios in support of the Trivers-Willard hypothesis: evidence for a mechanism. Proc Royal Soc London B, Biol Sci, v.271, p.1723-1728, 2004.
CASTEX, H.R.; LOSINNO, L. Magnetic nanoparticles for x sperm separation from equine semen. Field and commercial results. Memorias del IX SEMINARIO INTERNACIONAL DE MEDICINA, CIRUGÍA, ORTOPEDIA Y REPRODUCCIÓN EQUINA. Medicina Veterinaria y Zootecnia. Página 268, mayo - agosto 2018.
Christensen BW. Parturition. In: Mckinnon AO, Squires EL, Vaala WE, Varner DD (Eds.). Equine reproduction, 2.ed., v.2, Ames:Wiley-Blackwell; 2011. p.2268-2276.
Eulálio NC, Borges LM, Lopes EP, Gomes PS, Valle GR. Taxas de perda gestacional até 60 dias são afetadas por características cíclicas da égua receptora de embrião Mangalarga 12 -Marchador. Arq Bras Med Vet Zootec, v.65, p.397-403, 2013.
FERRIOLA, D; VIGOUROUX, L; BRYK-LUCY, J; RITCHIE, L. Meteorological and lunar influence on the occurrence of colic in horses. Journal of Equine Veterinary Science, v. 76, p. 128, 2019. https://doi.org/10.1016/j.jevs.2019.03.206
FRANKE, R.; HORSTGEN-SCHWARK, G. Lunar-rhythmic molting in laboratory populations of the noble crayfish Astacus astacus (Crustacea, Astacidea): Na Experimental Analysis. PLoS ONE, v.8, n.7, p. 1-11, 2013.
Gibbs W, Lye SJ, Challis JRG. Parturition. In: Neill JD (Ed.) Knobil and Neill’s physiology of reproduction. 3.ed., v.2, Sant Louis:Elsevier Academic Press; 2006. p.2925-2974.
Jovchelevich P. Revisão de literatura sobre a influência dos ritmos astronômicos na agricultura. Revista Núcleo de Pesquisa Interdisciplinar. 2006. Disponível em: http://www.fmr.edu.br/npi/014.pdf. Acesso em 18 fev. 2017.
Julien-Laferriere D. The influence of the moonlight on activity of woolly opossums (Caluromys philander). J Mammal, v.78, p.251-255, 1997.
MARINHO, E. N.; FRANCA, F. C.; SANTOS, G. S.; BARBOSA, D. H. F.; SILVA FILHO, J. M.; PALHARES, M. S.; Lopes, E.P.; VIANA, W. S.; ESQUARCIO, L. M. G. S.; VALLE, G.R.; O ciclo lunar influencia diferentemente o momento do parto de éguas de acordo com o sexo do potro. Revista Brasileira de Reprodução Animal, Belo Horizonte, v.39, n.2, p. 296-300, 2015.
Marteniuk JV, Carleton CL, Lloyd JW, Shea ME. Association of sex of fetus, sire, month of conception, or year of foaling with duration of gestation in Standardbred mares. J Am Vet Med Assoc, v.212, p.1743-1745, 1998.
Martin JF. Length of the follicular phase, time of insemination, coital rate and the sex of offspring. Hum Reprod, v.12, p.611-616, 1997.
MATTANA, J.; PIMENTA, C.L.; BLAINSKI, J.M.L.; Artigo sobre o calendário biodinâmico: as fases e posições da lua. Maneje Bem- Especial, vol. 1, Fitocon: Rio de Janeiro, 2018. p. 5-22. Disponível: https://www.manejebem.com.br/publicacao/manejos/livro-digital-artigo-sobre-ocalendario-biodinamico-como-funciona.
McCue PM, Ferris RA. Parturition, dystocia and foal survival: a retrospective study of 1047 births. Eq Vet J, v.44, Suppl.41, p.22-25, 2012.
McCue PM, Scoggin CF, Lindholm ARG. Estrus. In: Mckinnon AO, Squires EL, Vaala WE, Varner DD (Eds.). Equine reproduction, 2.ed., v.2, Ames:Wiley-Blackwell; 2011. p.1716-1727.
Morrison DW. Foraging ecology and energetics of the frugivorous bat Artibeus jamaicensis. Ecology, v.59, p.716-723, 1978.
Newcombe JR, Nout YS. Apparent effect of management on the hour of parturition in mares. Vet Rec, v.142, p.221-222, 1998.
Nicolich MJ, Huebner WW, Schnatter AR. Influence of parental and biological factors on the male birth fraction in the United States: an analysis of birth certificate data from 1964 through 1988. Fertil Steril, v.73, p.487-492, 2000.
Oliveira Filho KS, Saraiva MFO. Astronomia e astrofísica. Departamento de Astronomia. Porto Alegre: Universidade Federal do Rio Grande do Sul, 2013.
Orvos H, Kozinsky Z, Bartfai G. Natural variation in the human sex ratio. Hum Reprod, v.16, p.803, 2001.
Ousey JC. Endocrinological adaptation. In: Mckinnon AO, Squires EL, Vaala WE, Varner DD (Eds.). Equine reproduction, 2.ed., v.2, Ames:Wiley-Blackwell; 2011.
PORTUGAL, S.J; BRANCO, C.R; FRAPPELL, P.B; VERDE, J.A; BUTLER, P.J. Impacts of “supermoon” events on the physiology of a wild bird. Ecology and Evolution, v. 9, n. 14, p. 7974-7984, 2019. https://doi.org/10.1002/ece3.5311
Raeside JL, Liptrap RM. Patterns of urinary estrogen excretion in individual pregnancy mares. J Reprod Fertil, Suppl.23, p.469-475, 1975.
Sharp DC. Melatonin. In: Mckinnon AO, Squires EL, Vaala WE, Varner DD (Eds.). Equine reproduction, 2.ed., v.2, Ames:Wiley-Blackwell; 2011a. p.1669-1678.
Sharp DC. Photoperiod. In: Mckinnon AO, Squires EL, Vaala WE, Varner DD (Eds.). Equine reproduction, 2.ed., v.2, Ames:Wiley-Blackwell; 2011b. p.1771-1777.
Shuhaiber JH, Fava JL, Shin T, Dobrilovic N, Ehsan A, Bert A, Sellke F. The influence of seasons and lunar cycle on hospital outcomes following ascending aortic dissection repair. Interact CardioVasc Thorac Surg, v.17, p.818-822, 2013.
RIVERA, J.R. La Luna: El Sol Nocturno em los trópicos y sua influência em la agricultura. 2ed. Bogota: Impresora Feriva, 220 p., 2005.
R Core Team (2023). _R: A Language and Environment for Statistical Computing_. R Foundation for Statistical Computing, Vienna, Austria. <https://www.R-project.org/>.
SAMPER, J.C.; MORRIS, L.; PEÑA, F.J.; PLOUGH, T.A. Commercial Breeding with Sexed Stallion Semen: Reality or Fiction? Journal of Equine Veterinary Science, Volume 32, Issue 8, Pages 471-474, 2012. https://doi.org/10.1016/j.jevs.2012.06.018.
SCOTT C, SOUZA FF, MOTHÉ GB, ARISTIZABAL VHV, DEL’AQUA JUNIOR JD. Estudo sobre as diferentes técnicas de sexagem de espermatozoides. Veterinária e Zootecnia, v 25(1), p. 021-029, mar, 2018.
Schneider J. Sex determination in horses – current status and future perspectives. Anim Reprod Sci, v.146, p.34-41, 2014.
Silva AEF, Dias MJ, Dias DSO, Duarte JB, Andrade JRA. Influência do momento da inseminação artificial sobre a fertilidade e o sexo da cria de novilhas da raça Nelore. Ciên Anim Bras, v.9, p.997-1003, 2008.
Singaravelan N, Marimuthu G. Moonlight inhibits and lunar eclipse enhances foraging activity of fruit bats in an orchard. Cur Sci, v.82, p.1020-1022, 2002.
SOUSA, Y. C.; LEITE, E.V.; SANTOS, A. S.; MALAFAIA, G.; ALVES JÚNIOR, J.R. F. Influência lunar sobre a determinação sexual de potros quarto de milha. Anais VI CONGRESSO ESTADUAL DE INICIAÇÃO CIENTÍFICA E TECNOLÓGICA DO IF GOIANO, IF Goiano- Campus Urutaí 25 a 28 de setembro de 2017.
Stern EW, Glazer GL, Sanduleak N. Influence of the full and new moon on onset of labor and spontaneous rupture of membranes. J Nurse Midwifery, v.33, p.57-61, 1988.
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Valle GR, Silva Filho JM, Henry MRJM, Palhares MS, Oliveira HN. Efeitos da rufiação e da manipulação do sistema genital sobre a fertilidade de éguas inseminadas. Arq Bras Med Vet Zootec, v.50, p.547-556, 1998.
Wolf A, Gabaldi SH. Acompanhamento ultrassonográfico da gestação em grandes animais. Ciên Agr Saúde, v.2, p.77-83, 2002.
