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DOI	10.1016/j.smallrumres.2020.106125
	Longitudinal study of Toxoplasma gondii antibodies in female lambs from Paraiba State, Brazil
	Valencio, Bianca Alves; Alves, Bruna Farias; Bezerra, Roberto Alves; Ribeiro Vilela, Vinicius Longo; Feitosa, Thais Ferreira; Amaku, Marcos; Azevedod, Sergio S.; Gennari, Solange Maria
通讯作者	Gennari, SM
来源期刊	SMALL RUMINANT RESEARCH
ISSN	0921-4488
EISSN	1879-0941
出版年	2020
卷号	188
英文摘要	Toxoplasmosis is a worldwide zoonosis that affects man and homeothermic animals, caused by the protozoan Toxoplasma gondii. This parasite is responsible for congenital diseases, miscarriage and stillbirth in some species, such as sheep. Although outbreaks of abortion are considered important, descriptions of these outbreaks in ewes in Brazil are rare, even though infection is highly prevalent, and isolates are very virulent. Studies have shown a strong association between the presence of antibodies against the parasite in mothers and a low occurrence of reproductive problems by T. gondii during pregnancy. The objective of the study was to evaluate the occurrence of T. gondii infection in sheep from the semi-arid region of Paraiba State, Brazil, and to determine if these animals acquire the infection in the first year of life, before the beginning of the reproductive phase. This was done by monitoring the dynamics of anti-T. gondii antibodies by indirect fluorescence antibody test (IFAT >= 64) in animal serum from birth to 12 months of age, obtained once a month. Fifty-six crossbreed females and their 61 offspring, belonging to seven semi-intensive farms (representative of the region's farms) were evaluated. Of the 61 lambs studied, 55.7% (34/61) (IC 95% 44.9%-71.4%) were antibody negative at the end of 12 months, as only presumed colostrum antibodies were detected in these animals or they remained negative throughout the study. The remaining 44.3% (27/61) (IC 95% 28.6%-55.1%) were either presenting high antibody titres since the first examination (5/27; 18.5%), or became seropositive in the first year of life (22/27; 81.5%). Antibody titres ranged from 64 to 65,356 and the variables analysed (presence of cats, type of water supplied, type of flock, sanitary management and existence of sewage within the property) were not associated with the seroconversion of the lambs. The study concludes that about half of the ewes were seronegative at the age of one year, the time of their first gestation and, probably, they are more susceptible to reproductive problems caused by this coccidia.
英文关键词	epidemiology sheep toxoplasmosis Brazil
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000539358700011
WOS关键词	NEOSPORA-CANINUM ANTIBODIES ; VERTICAL TRANSMISSION ; IN-OVINE ; PASSIVE-IMMUNITY ; ABORTED FETUSES ; RISK-FACTORS ; SHEEP ; INFECTION ; COLOSTRUM ; LEPTOSPIROSIS
WOS类目	Agriculture, Dairy & Animal Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324714
作者单位	[Valencio, Bianca Alves; Alves, Bruna Farias; Gennari, Solange Maria] Univ Sao Paulo, Fac Med Vet & Zootecnia, Av Prof Orlando M de Paiva 87, Sao Paulo, SP, Brazil; [Bezerra, Roberto Alves; Ribeiro Vilela, Vinicius Longo; Feitosa, Thais Ferreira] Inst Fed Paraiba, Dept Med Vet, Rua Pedro Antunes S-N, Sousa, Paraiba, Brazil; [Amaku, Marcos] Univ Sao Paulo, Fac Med, Av Dr Arnaldo 455, Sao Paulo, SP, Brazil; [Azevedod, Sergio S.] Univ Fed Campina Grande, Lab Doencas Transmissiveis, Patos de Minas, PB, Brazil; [Gennari, Solange Maria] Univ Santo Amaro, Programa Posgrad Med Vet, Rua Prof Eneias Siqueira Neto 340,Campus 1, Sao Paulo, SP, Brazil
推荐引用方式 GB/T 7714	Valencio, Bianca Alves,Alves, Bruna Farias,Bezerra, Roberto Alves,et al. Longitudinal study of Toxoplasma gondii antibodies in female lambs from Paraiba State, Brazil[J],2020,188.
APA	Valencio, Bianca Alves.,Alves, Bruna Farias.,Bezerra, Roberto Alves.,Ribeiro Vilela, Vinicius Longo.,Feitosa, Thais Ferreira.,...&Gennari, Solange Maria.(2020).Longitudinal study of Toxoplasma gondii antibodies in female lambs from Paraiba State, Brazil.SMALL RUMINANT RESEARCH,188.
MLA	Valencio, Bianca Alves,et al."Longitudinal study of Toxoplasma gondii antibodies in female lambs from Paraiba State, Brazil".SMALL RUMINANT RESEARCH 188(2020).