References
- Aguerre, S., Jacquiet, P., Brodier, H., Bournazel, J.P., Grisez, C., Prévot, F., Michot, L., Fidelle, F., Astruc, J. M., Moreno, C.R. (2018): Resistance to gastrointestinal nematodes in dairy sheep: Genetic variability and relevance of artificial infection of nucleus rams to select for resistant ewes on farms. Vet Parasitol, 256: 16 – 23. DOI: 10.1016/j.vetpar.2018.04.004
- Aguirre-Serrano, A.M., Ojeda-Robertos, N.F., González-Garduño, R., Peralta-Torres, J.A., Luna-Palomera, C., Torres-Acosta, J.F.J. (2020): Influence of litter size at birth and weaning on the proportion of Pelibuey ewes treated with an anthelmintic in a targeted selective scheme in the hot humid tropics. Small Ruminant Res, 184: 106049. DOI: 10.1016/j.smallrumres.2020.106049
- Alavez-Ramírez, A., Montes-Pérez, R., Aguilar-Caballero, A. J., Ortega-Pacheco, A. (2016): Effect of the combination of male effect with PGF2α on estrus synchronization of hair sheep in Mexican tropic. Trop. Anim. Health Prod, 48: 655 – 658. DOI: 10.1007/s11250-015-0977-2
- Al Kalaldeh, M., Gibson, J., Lee, S.H., Gondro, C., Van Der Werf, J.H.J. (2019): Detection of genomic regions underlying resistance to gastrointestinal parasites in Australian sheep. Genet Sel Evol., 51: 37. https: DOI 10.1186/s12711-019-0479-1
- Beasley, A.M., Kahn, L.P., Windon, R.G. (2010): The periparturient relaxation of immunity in Merino ewes infected with Trichostrongylus colubriformis: parasitological and immunological responses. Vet Parasitol, 168: 60 – 70. DOI: 10.1016/j.vetpar.2009.08.028
- Bell, A., Mcnally, J., Smith, D.V., Rahman, A., Hunt, P., Kotze, A.C., Dominik, S., Ingham, A. (2019): Quantification of differences in resistance to gastrointestinal nematode infections in sheep using a multivariate blood parameter. Vet Parasitol, 270: 31 – 39. DOI: 10.1016/j.vetpar.2019.05.007
- Bezerra, L.R., Oliveira, W.D.C., Silva, T.P.D., Torreão, J.N.C., Marques, C.A.T., Araújo, M.J., Oliveira, R.L. (2017): Comparative hematological analysis of Morada Nova and Santa Inês ewes in all reproductive stages. Pesqui Vet Bras, 37: 408 – 414. DOI: 10.1590/S0100-736X2017000400017
- Bouix, J., Krupinski, J., Rzepecki, R., Nowosad, B., Skrzyzala, I., Roborzynski, M., Fudalewicz-Niemczyk, W., Skalska, M., Malczewski, A., Gruner, L. (1998): Genetic resistance to gastrointestinal nematode parasites in polish long-wool sheep. Int J Parasitol, 28: 1797 – 1804. DOI: 10.1016/S0020-7519(98)00147-7
- CONAGUA (2021): Comision Nacional del Agua. Servicio Meteorológico Nacional. Normales climatológicas. Resúmenes mensuales de temperatura y lluvia. [National Water Comission. National Metereological Service. Climatological normals. Monthly temperature and rainfall summaries] Retrieved 20 July 2021 from https://smn.conagua.gob.mx/es/climatologia/temperaturas-y-lluvias/resumenes-mensuales-detemperaturas-y-lluvias (In Spanish)
- Corticelli, B., Lai, M. (1963): Studies on the technique of culture of infective larvae of gastrointestinal strongyles of cattle. Acta Med Vet Napoli, 9: 347 – 357
- De La Chevrotière, C., Bambou, J.C., Arquet, R., Jacquiet, P., Mandonnet, N. (2012): Genetic analysis of the potential role of IgA and IgE responses against Haemonchus contortus in parasite resistance of Creole goats. Vet Parasitol, 186: 337 – 343. DOI: 10.1016/j.vetpar.2011.11.071
- Douch, P.G.C., Green, R.S., Morris, C.A., Mcewan, J.C., Windon, R.G. (1996): Phenotypic markers for selection of nematode resistant sheep. Int J Parasitol, 26: 899 – 911. DOI: 10.1016/S0020-7519(96)80062-2
- Figueroa-Castillo, J.A., Medina, R.D.M., Villalobos, J.M.B., Gayosso-Vázquez, A., Ulloa-Arvízu, R., Rodríguez, R.A., Ramírez, H.P., Alonso-Morales, R.A. (2011): Association between major histocompatibility complex microsatellites, fecal egg count, blood packed cell volume and blood eosinophilia in Pelibuey sheep infected with Haemonchus contortus. Vet Parasitol, 177: 339 – 344. DOI: 10.1016/j.vetpar.2010.11.056
- Goldberg, V., Ciappesoni, G., Aguilar, I. (2012): Modelling the faecal worm egg count curve during the periparturient period in Uruguayan Merino sheep. Spanish J Agric Res, 10: 986. DOI: 10.5424/sjar/2012104-3256
- González-Garduño, R., Arece-García, J., Torres-Hernández, G. (2021): Physiological, immunological and genetic factors in the resistance and susceptibility to gastrointestinal nematodes of sheep in the peripartum period: A review. Helminthologia, 58: 134 – 151. DOI: 10.2478/helm-2021-0020
- González-Garduño, R., Mendoza-De Gives, P., López-Arellano, M. E., Aguilar-Marcelino, L., Torres-Hernández, G., Ojeda-Robertos, N.F., Torres-Acosta, J.F.J. (2018): Influence of the physiological stage of Blackbelly sheep on immunological behaviour against gastrointestinal nematodes. Exp Parasitol, 193: 20 – 26. DOI: 10.1016/j.exppara.2018.08.003
- González-Garduño, R., Mendoza-De Gives, P., Torres-Hernández, G. (2014): Variability in the infection of F1 Katahdin x Pelibuey crossbred lambs to gastrointestinal parasitic nematodes in a warm humid climate. Acta Sci Vet, 42 (1): 1 – 9
- Gutiérrez-Amézquita, R.A., Morales-Montor, J., Muñoz-Guzmán, M.A., Nava-Castro, K.E., Ramírez-Álvarez, H., Cuenca-Verde, C., Moreno-Mendoza, N.A., Cuéllar-Ordaz, J.A., Alba-Hurtado, F. (2017): Progesterone inhibits the in vitro L3/L4 molting process in Haemonchus contortus. Vet Parasitol, 248: 48 – 53. DOI: 10.1016/j.vetpar.2017.10.011
- Hamer, K., Bartley, D., Jennings, A., Morrison, A., Sargison, N. (2018): Lack of efficacy of monepantel against trichostrongyle nematodes in a UK sheep flock. Vet Parasitol, 257: 48 – 53. DOI: 10.1016/j.vetpar.2018.05.013
- Henderson, N.G., Stear, M.J. (2006): Eosinophil and IgA responses in sheep infected with Teladorsagia circumcincta. Vet Immunol Immunopathol, 112: 62 – 66. DOI: 10.1016/j.vetimm.2006.03.012
- Houdijk, J.G.M. (2008): Influence of periparturient nutritional demand on resistance to parasites in livestock. Parasite Immunol, 30: 113 – 121. DOI: 10.1111/j.1365-3024.2008.00992.x
- Idris, A., Moors, E., Sohnrey, B., Gauly, M. (2012): Gastrointestinal nematode infections in German sheep. Parasitol Res, 110: 1453 – 1459. DOI: 10.1007/s00436-011-2648-1
- Jaimez-Rodríguez, P.R., González-Pech, P.G., Ventura-Cordero, J., Brito, D. R. B., Costa-Júnior, L. M., Sandoval-Castro, C. A., Torres-Acosta, J.F.J. (2019): The worm burden of tracer kids and lambs browsing heterogeneous vegetation is influenced by strata harvested and not total dry matter intake or plant life form. Trop Anim Health Prod, 51: 2243 – 2251. DOI: 10.1007/s11250-019-01928-9
- Jeffcoate, I.A., Wedrychowicz, H., Fishwick, G., Dunlop, E.M., Duncan, J.L., Holmes, P.H. (1992): Pathophysiology of the periparturient egg rise in sheep: a possible role for IgA. Res Vet Sci., 53: 212 – 218. DOI: 10.1016/0034-5288(92)90112-F
- Kanobana, K., Vervelde, L., Van Der Veer, M., Eysker, M., Ploeger, H.W. (2001): Characterization of host responder types after a single Cooperia oncophora infection: Kinetics of the systemic immune response. Parasite Immunol, 23: 641 – 653. DOI: 10.1046/j.1365-3024.2001.00426.x
- Mavrot, F., Hertzberg, H., Torgerson, P. (2015): Effect of gastro-intestinal nematode infection on sheep performance: A systematic review and meta-analysis. Parasit Vectors., 8: 1 – 11. DOI: 10.1186/s13071-015-1164-z
- Mendes, J.B., Cintra, M.C.R., Nascimento, L.V., De Jesus, R.M.M., Maia, D., Ostrensky, A., Teixeira, V.N., Sotomaior, C.S. (2018): Effects of protein supplementation on resistance and resilience of lambs naturally infected with gastrointestinal parasites. Semin Cienc Agrar, 39: 643 – 655. DOI: 10.5433/1679-0359.2018v39n2p643
- Morgan, E.R., Aziz, N.A.A., Blanchard, A., Charlier, J., Charvet, C., Claerebout, E., Geldhof, P., Greer, A.W., Hertzberg, H., Hodgkinson, J., Höglund, J., Hoste, H., Kaplan, R.M., Martínez-Valladares, M., Mitchell, S., Ploeger, H.W., Rinaldi, L., Von Samson-Himmelstjerna, G., Sotiraki, S., Schnyder, M., Skuce, P., Bartley, D., Kenyon, F., Thamsborg, S. M., Vineer, H.R., De Waal, T., Williams, A.R., Van Wyk, J.A., Vercruysse, J. (2019): 100 Questions in livestock helminthology research. Trends Parasitol, 35: 52 – 71. DOI: 10.1016/j.pt.2018.10.006
- Morteo-Gómez, R., González-Garduño, R., Torres-Hernández, G., Nuncio-Ochoa, G., Becerril-Pérez, C. M., Gallegos-Sánchez, J., Aranda-Ibañez, E. (2004): Effect of the phenotypic variation in the resistance of Pelibuey lambs to the infestation with gastrointestinal nematodes. Agrociencia., 38: 395 – 404
- Muñoz-Osorio, G., Aguilar-Caballero, A., Sarmiento Franco, L., Wurzinger, M., Cámara-Sarmiento, R. (2016): Technologies and strategies for improving hair lamb fattening systems in tropical regions: a review. Ecosis Recur Agropec, 3: 267 – 277. DOI: 10.19136/era.a3n8.1058
- Notter, D.R., Burke, J.M., Miller, J.E., Morgan, J.L.M. (2017): Factors affecting fecal egg counts in periparturient Katahdin ewes and their lambs. J Anim Sci, 95: 103 – 112. DOI: 10.2527/jas2016.0955
- Notter, D.R, Ngere, L., Burke, J.M., Miller, J.E., Morgan, J.L.M. (2018): Genetic parameters for ewe reproductive performance and periparturient fecal egg counts and their genetic relationships with lamb body weights and fecal egg counts in Katahdin sheep. J Anim Sci, 96: 1579 – 1589. DOI: 10.1093/jas/sky100
- Oliveira, E.J., Savegnago, R.P., De Freita, L.A., Freitas, A.P., Maia, S.R., Simili, F.F., El Faro, L., Da Costa, R.L.D., Santana, Júnior M.L., De Paz, C.C.P. (2018): Estimates of genetic parameters and cluster analysis for worm resistance and resilience in Santa Inês meat sheep. Pesqui Agropecu Bras, 53: 1338 – 1345. DOI: 10.1590/S0100-204X2018001200006
- Palomo-Couoh, J.G., Aguilar-Caballero, A.J., Torres-Acosta, J.F.J., Magaña-Monforte, J.G. (2016): Evaluation of different models to segregate Pelibuey and Katahdin ewes into resistant or susceptible to gastrointestinal nematodes. Trop Anim Health Prod, 48: 1517 – 1524. DOI: 10.1007/s11250-016-1122-6
- Palomo-Couoh, J.G., Aguilar-Caballero, A.J., Torres-Acosta, J.F.J., González-Garduño, R. (2017): Comparing the phenotypic susceptibility of Pelibuey and Katahdin female lambs against natural gastrointestinal nematode infections under hot humid tropical conditions. Parasitol Res, 116: 1627 – 1636. DOI: 10.1007/s00436-017-5437-7
- Rodríguez-Vivas, R.I., Cob-Galera, L. (2005): Técnicas Diagnósticas en Parasitología Veterinaria [Diagnostic Techniques in Veterinary Parasitology], 2a. ed. Universidad Autónoma de Yucatán, México. 306p. (In Spanish)
- Ruano, Z.M., Cortinhas, A., Carolino, N., Gomes, J., Costa, M., Mateus, T.L. (2019): Gastrointestinal parasites as a possible threat to an endangered autochthonous Portuguese sheep breed. J Helminthol, 94: e103. DOI: 10.1017/S0022149X19000968
- Russel, A. (1984): Body condition scoring of sheep. In Pract, 6: 91 – 93
- Saddiqi, H.A., Sarwar, M., Iqbal, Z., Nisa, M., Shahzad, M.A. (2012): Markers/parameters for the evaluation of natural resistance status of small ruminants against gastrointestinal nematodes. Animal, 6: 994 – 1004. DOI: 10.1017/S1751731111002357
- SAS (2004): Statistical Analysis System, SAS Institute Inc. SAS/ACCESS®.
- Tembely, S., Lahlou-Kassi, A., Rege, Jeo., Mukasa-Mugerwa, E., Anindo, D., Sovani, S., Baker, R.L. (1998): Breed and season effects on the periparturient rise in nematode egg output in indigenous ewes in a cool tropical environment. Vet Parasitol, 77: 123 – 132. DOI: 10.1016/S0304-4017(97)00219-7
- Torres-Acosta, J.F.J. (1999): Supplementary feeding and the control of gastrointestinal nematodes of goats in Yucatán, México. Ph.D. Thesis. Royal of Veterinary College. University of London. London, U.K. 269 p.
- Torres-Acosta, J.F.J., Mendoza-De Gives, P., Aguilar-Caballero, A.J., Cuéllar-Ordaz, J.A. (2012): Anthelmintic resistance in sheep farms: Update of the situation in the American continent. Vet Parasitol, 189: 89 – 96. DOI: 10.1016/j.vetpar.2012.03.037
- Van Den Brom, R., Moll, L., Kappert, C., Vellema, P. (2015): Haemonchus contortus resistance to monepantel in sheep. Vet Parasitol., 209: 278 – 280. DOI: 10.1016/j.vetpar.2015.02.026
- Van Wyk, J.A., Mayhew, E. (2013): Morphological identification of parasitic nematode infective larvae of small ruminants and cattle : A practical lab guide. Onderstepoort J Vet Res, 80: 1 – 14. DOI: 10.4102/ojvr.v80i1.539
- Vargas-Duarte, J. J., Lozano-Márquez, H., Grajales-Lombana, H. A., Manrique-Perdomo, C., Martínez-Bello, D. A., Saegerman, C., Raes, M., Kirschvink, N. (2015): Effect of moxidectin treatment at peripartum on gastrointestinal parasite infections in ewes raised under tropical Andes high altitude conditions. Vet Med Int, 1 – 8. DOI: 10.1155/2015/932080
- Vasileiou, N.G.C., Arsenopoulos, K., Katsafadou, A.I., Angelou, A., Mavrogianni, V.S., Fthenakis, G.C., Papadopoulos, E. (2019): Interactions between parasitism and milk production - Mastitis in sheep. Small Rumin Res., 180: 70 – 73. DOI: 10.1016/j.smallrumres.2019.07.015
- Vilela, V.L.R., Feitosa, T.F., Braga, F.R., De Araújo, J.V., Dos Santos, A., De Morais, D.F., De Oliveira-Souto, D.V., Athayde, A.C.R. (2016): Coadministration of nematophagous fungi for biological control over gastrointestinal helminths in sheep in the semiarid region of northeastern Brazil. Vet Parasitol, 221, 139 – 143. DOI: 10.1016/j.vetpar.2016.03.027
- Vineer, H.R., Baber, P., White, T., Morgan, E.R. (2019): Reduced egg shedding in nematode-resistant ewes and projected epidemiological benefits under climate change. Int J Parasitol, 49: 901 – 910. DOI: 10.1016/j.ijpara.2019.06.008
- Zaragoza-Vera, C.V., Aguilar-Caballero, A.J., González-Garduño, R., Arjona-Jiménez, G., Zaragoza-Vera, M., Torres-Acosta, J.F.J., Medina-Reynés, J.U., Berumen-Alatorre, A.C. (2019): Variation in phenotypic resistance to gastrointestinal nematodes in hair sheep in the humid tropics of Mexico. Parasitol Res, 118: 567 – 573. DOI: 10.1007/s00436-018-06201-w