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Integrated crop-livestock system as grassland contamination control method for gastrointestinal helminths of sheep

Grant number: 15/25413-1
Support type:Scholarships in Brazil - Master
Effective date (Start): March 01, 2016
Effective date (End): June 30, 2017
Field of knowledge:Agronomical Sciences - Animal Husbandry
Principal Investigator:Ciniro Costa
Grantee:Marina Lais Sabião de Toledo Piza
Home Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil


Will be evaluated four Integrated Crop-Livestock Systems (ICLS) to verify if after a rest period of nine months the pasture will be decontaminated by infective larvae of gastrointestinal parasites of sheep. The systems will be: (1) Maize + palisadegrass + oats spread out manually; (2) Maize + palisadegrass + pigeon pea + oats spread out manually; (3) Maize + palisadegrass + oats on the line; (4) Maize + palisadegrass + pigeon pea + oats on the line. An experimental cycle (2015/2016) evaluation using 64 sheep (n = 16) Corriedale x Poll Dorset crossbred with an average of 90 days old and 25 kg body weight will be accomplished. The grazing animals will be rotated (12 paddocks per treatment) with three days of occupation and 33 days of rest. Will be assessed two grazing cycles (two cycles of oats), totaling 72 days of experiment. The animals will be collected at the end of the day in pen in a covered shed, and each group will be allocated on a pen and on this occasion will be supplemented with concentrated + silage from the same treatment. The pasture collected to verify contamination by infective larvae (L3) of gastrointestinal parasites will be evaluated every nine days, after the occupation for animals, at the pickets 1, 6 and 11 of each treatment. Will be compared two pasture collection methods for quantification and identification of infective larvae. The first is the 'W' method and the other the Square Method. Before the occupation of the lambs test in these paddocks, will be used 12 tracer lambs, free of helminth infection (n = 3), to verify if the rest period of nine months was enough to decontaminate the pasture. These animals will be slaughtered for recovery and quantification and identification of parasites present in the gastrointestinal tract (abomasum and small and large intestines). We hoped this project validate the ICLS as a method to decontaminate the pasture by gastrointestinal parasites of sheep.

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SABIAO DE TOLEDO PIZA, MARINA LAIS; DE ALMEIDA, FABIANA ALVES; PARIZ, CRISTIANO MAGALHAES; COSTA, CINIRO; TALAMINI DO AMARANTE, ALESSANDRO FRANCISCO. Comparison of two methods for the quantification of gastrointestinal nematode infective larvae from pasture. SEMINA-CIENCIAS AGRARIAS, v. 40, n. 2, p. 713-722, MAR-APR 2019. Web of Science Citations: 1.
ALMEIDA, FABIANA A.; PIZA, MARINA L. S. T.; BASSETTO, CESAR C.; STARLING, RENAN Z. C.; ALBUQUERQUE, ANA CLAUDIA A.; PROTES, VERENA M.; PARIZ, CRISTIANO M.; CASTILHOS, ANDRE M.; COSTA, CINIRO; AMARANTE, ALESSANDRO F. T. Infection with gastrointestinal nematodes in lambs in different integrated crop-livestock systems (ICL). Small Ruminant Research, v. 166, p. 66-72, SEP 2018. Web of Science Citations: 1.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
PIZA, Marina Lais Sabião de Toledo. Sistema de integração lavoura-pecuária como método de controle da contaminação da pastagem por nematódeos gastrintestinais de ovinos. 2017. Master's Dissertation - Universidade Estadual Paulista "Júlio de Mesquita Filho" Faculdade de Medicina Veterinária e Zootecnia..

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