Health concerns of lambs fed cottonseed hulls combined with chitosan by examining the blood metabolic profile and histopathology of the kidney, liver, and rumen

T Silva Magalhaes, Carvalho Ggp, Santos Em, Lima Aes, Freitas Junior Je, Pina Ds, Santos Sa, Pinto Lfb, Mourao Gb, Soares Fds, Pereira Tcj and Leite Lc
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T Silva Magalhaes: Federal University of Bahia, Salvador, Bahia, Brazil
Carvalho Ggp: Federal University of Bahia, Salvador, Bahia, Brazil
Santos Em: Federal University of Paraíba, Areia, Paraíba, Brazil
Lima Aes: Federal University of Bahia, Salvador, Bahia, Brazil
Freitas Junior Je: Federal University of Bahia, Salvador, Bahia, Brazil
Pina Ds: Federal University of Bahia, Salvador, Bahia, Brazil
Santos Sa: Federal University of Bahia, Salvador, Bahia, Brazil
Pinto Lfb: Federal University of Bahia, Salvador, Bahia, Brazil
Mourao Gb: University of São Paulo, Piracicaba, São Paulo, Brazil
Soares Fds: State University of Southwest Bahia, Itapetinga, Bahia, Brazil
Pereira Tcj: Federal University of Bahia, Salvador, Bahia, Brazil
Leite Lc: Federal University of Recôncavo da Bahia, Cruz das Almas, Bahia, Brazil

Veterinární medicína, 2021, vol. 66, issue 11, 470-480

Abstract: This study analysed the effect of cottonseed hulls and chitosan in diets for lambs by determining the blood metabolite profile, and the histopathology of the kidney, liver, and rumen. Eighty non-castrated Santa Inês lambs, approximately 120 days of age and a mean initial body weight (b.w.) of 22.6 (standard deviation ± 2.2 kg) were assigned to a completely randomised design, with a 2 × 2 factorial arrangement. Two chitosan levels and two cottonseed forms were evaluated. The experimental diets were following: diet containing whole cottonseed hulls (WC) without the addition of chitosan; diet containing WC with 136 mg/kg b.w. chitosan added; diet containing ground cottonseed hulls (GC) without the addition of chitosan; diet containing GC with 136 mg/kg b.w. chitosan added. The blood metabolites and hepatic enzymes ALT, AST, GGT were not significantly influenced in the treatment groups, except for the serum cholesterol concentration which was lower (P < 0.05) when the chitosan was combined with the whole cottonseed hulls. There were histopathological alterations (P < 0.05) in the liver and kidney tissue and moderate changes in the rumen samples in the animals fed cottonseed without chitosan, however, when chitosan was added, the changes were less marked. The combination of chitosan with cottonseed hulls (ground or whole) can be supplied safely to feedlot finishing lambs without compromising their health.

Keywords: clinical biochemistry; hepatocytes; hepatopathy; ruminal morphometry; small ruminants (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlvet:v:66:y:2021:i:11:id:194-2020-vetmed

DOI: 10.17221/194/2020-VETMED

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