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Título

Effect of dietary supplementation with carnosic acid or vitamin E on animal performance, haematological and immunological characteristics of artificially reared suckling lambs before and after road transport

AutorMorán, Lara ; Andrés, Sonia ; Blanco, Carolina ; Benavides, Julio ; Martínez Valladares, María ; Moloney, A. P.; Giráldez, Francisco Javier
Palabras claveStress
Feed supplements
Haematology
Lambs
Transport of animals
Carnosic acid
Fecha de publicación2017
EditorTaylor & Francis
CitaciónArchives of Animal Nutrition 71: 272- 284 (2017)
ResumenTo elucidate the influence of dietary carnosic acid (CA) and vitamin E on animal performance, immune response indicators and haematological parameters before and after transport stress, 24 lambs were individually fed ad libitum with milk replacer (MR) using an auto-feeder. Once daily the lambs received MR alone (Group CON, n = 8), MR + 0.096 g CA/kg live weight (LW) (Group CARN, n = 8) or MR + 0.024 g of α-tocopheryl acetate per kg LW (Group VitE, n = 8). After reaching the target slaughter weight (12 ± 0.5 kg), blood samples were collected to measure haematological and immunological parameters. Then, lambs were subjected to 4-h road transport and blood samples were collected again for haematological assessment. The animals were subsequently slaughtered. Before road transport, dietary CA supplementation promoted a descent of circulating white blood cells (WBC), red blood cells (RBC), haematocrit and haemoglobin concentration when compared with Groups CON and VitE (p < 0.05), but it did not affect production of cytokines by blood mononuclear cells. Road transport did not affect either RBC or haematocrit significantly. Nevertheless, transport affected leucocyte profile similarly in all the treatments, increasing granulocytes and monocytes proportions and decreasing lymphocytes. In contrast, after transport, WBC was increased in Group CARN, reaching similar values than Groups CON and VitE. However, under conditions of the present study, those modifications did not influence animal performance or immunity parameters of artificially reared suckling lambs.
Descripción13 páginas, 6 tablas.
Versión del editorhttp://dx.doi.org/10.1080/1745039X.2017.1316137
URIhttp://hdl.handle.net/10261/158965
DOI10.1080/1745039X.2017.1316137
ISSN1477-2817
E-ISSN1477-2817
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