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                                                                                                                      OJVRTM

 

Online Journal of Veterinary Research©

(Including Medical and Laboratory Research)

Established 1994

ISSN 1328-925X

 

Volume 29 (2): 114-119, 2025.


 

Cyhalothrin residues and placenta transfer in goats.

 

Oliveira C,  Vassilieff VS, Vassilieff I.

 

Centro Toxicologia (CEATOX), Institute of Biosciences, UNESP, Botucatu, São Paulo, Brasil.

 

ABSTRACT

 

C. Oliveira, V S Vassilieff, I Vassilieff: Cyhalothrin residues and placenta transfer in goats, Onl J Vet Res., 29 (2): 114-119, 2025.,  Residues and placental transfer of cyhalothrin were determined in pregnant and lactating goats sprayed 28 mg twice over 6 to 7 weeks.  In pregnant goats, residues persisted for 35 days and were detected in 50 to 70% blood and 60 to 70% of colostrum samples. In lactating goats, residues were detected in 60 to 70% of blood and 60 to 80% of milk samples. The pesticide was cleared by 42 days. Before 1st milking, 69% blood from offspring contained residues, and 50 to 70% of suckled male offspring had blood residues for 35 days. These results show that lambda-cyhalothrin is absorbed cutaneously and eliminated in colostrum and milk; and residues in offspring before ingestion of colostrum, suggested placental transfer.

 

Key words: Residue, placental transfer, goat, lambda-cyhalothrin.


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