Effect of gastrointestinal nematodes on serum copper and phosphorus of growing beef calves in northwestern Argentina

The aim of this work was to study the effect of gastrointestinal nematodes (GINs) on copper (Cu) and phosphorus (P) in blood of beef cattle in two ranches (R1 and R2) located in northwestern Argentina. In 2015–2016 (R1) and 2016–2017 (R2), in each ranch, 22 weaned female calves were divided into two...

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Autores principales: Suarez, Victor Humberto, Micheloud, Juan Francisco, Araoz, Virginia, Martinez, Gabriela Marcela, Rosa, Diana Esther, Mattioli, Guillermo Alberto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Veterinaria
Cattle
Gastrointestinal nematode
Serum copper
Serum phosphorus
Effect
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/135513
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-135513
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Veterinaria
Cattle
Gastrointestinal nematode
Serum copper
Serum phosphorus
Effect
spellingShingle Veterinaria
Cattle
Gastrointestinal nematode
Serum copper
Serum phosphorus
Effect
Suarez, Victor Humberto
Micheloud, Juan Francisco
Araoz, Virginia
Martinez, Gabriela Marcela
Rosa, Diana Esther
Mattioli, Guillermo Alberto
Effect of gastrointestinal nematodes on serum copper and phosphorus of growing beef calves in northwestern Argentina
topic_facet Veterinaria
Cattle
Gastrointestinal nematode
Serum copper
Serum phosphorus
Effect
description The aim of this work was to study the effect of gastrointestinal nematodes (GINs) on copper (Cu) and phosphorus (P) in blood of beef cattle in two ranches (R1 and R2) located in northwestern Argentina. In 2015–2016 (R1) and 2016–2017 (R2), in each ranch, 22 weaned female calves were divided into two groups: calves treated systematically with 200 mcg/kg moxidectin every 45–50 days (TG) and untreated calves (UTG). The following parameters were measured: number of fecal eggs (epg), fecal cultures, serum Cu and P levels, and live weight gain (LWG). Differences between groups were compared using analysis of variance and Tukey test. GIN infections in both ranches were subclinical and moderate, showing the highest epg (R1 = 907 ± 754; R2 = 1049 ± 1040) by mid-winter. Epg values of TG groups were always negligible (> 93% of moxidectin efficacy). The dominant nematode genera were <i>Cooperia</i> and <i>Haemonchus</i>. The average serum Cu values (μg/dl) indicated low (R1 = 49.7 ± 18) and severe (R2 = 27.2 ± 14) deficiency. The effect of treatments was evident in both ranches from late winter, with TG showing significantly (p < 0.01) higher serum levels in winter, spring, and early autumn (R1 = 65.1, 50.9, and 60.3; R2 = 48.0, 25.7, and 22.4) than UTG (R1 = 44.3, 33.9, and 32.9; R2 = 25.5, 18.2, and 16.4). There were no differences in serum P levels between groups. LWG of TG increased significantly (p < 0.008) (27.2% in R1 and 38.6% in R2), with respect to those of UTG. This study showed a negative effect of GIN on serum Cu values in moderately infected growing calves.
format Articulo
Articulo
author Suarez, Victor Humberto
Micheloud, Juan Francisco
Araoz, Virginia
Martinez, Gabriela Marcela
Rosa, Diana Esther
Mattioli, Guillermo Alberto
author_facet Suarez, Victor Humberto
Micheloud, Juan Francisco
Araoz, Virginia
Martinez, Gabriela Marcela
Rosa, Diana Esther
Mattioli, Guillermo Alberto
author_sort Suarez, Victor Humberto
title Effect of gastrointestinal nematodes on serum copper and phosphorus of growing beef calves in northwestern Argentina
title_short Effect of gastrointestinal nematodes on serum copper and phosphorus of growing beef calves in northwestern Argentina
title_full Effect of gastrointestinal nematodes on serum copper and phosphorus of growing beef calves in northwestern Argentina
title_fullStr Effect of gastrointestinal nematodes on serum copper and phosphorus of growing beef calves in northwestern Argentina
title_full_unstemmed Effect of gastrointestinal nematodes on serum copper and phosphorus of growing beef calves in northwestern Argentina
title_sort effect of gastrointestinal nematodes on serum copper and phosphorus of growing beef calves in northwestern argentina
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/135513
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