Gastrointestinal parasite control during prepuberty improves mammary parenchyma development in Holstein heifers
Parasitism during development impairs normal growth and delays the onset of puberty through altered hormone profiles, including insulin-like growth factor one (IGF-1). Asmammary gland development during prepuberty is strongly dependent on IGF-1, we determined if antiparasitic treatment during this s...
Autores principales: | , , , , , , , |
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Formato: | Articulo |
Lenguaje: | Inglés |
Publicado: |
2013
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Materias: | |
Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/104605 https://ri.conicet.gov.ar/11336/1008 |
Aporte de: |
id |
I19-R120-10915-104605 |
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record_format |
dspace |
institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Ciencias Veterinarias Gastrointestinal parasites Puberty IGF-1 Mammary development Dairy heifers |
spellingShingle |
Ciencias Veterinarias Gastrointestinal parasites Puberty IGF-1 Mammary development Dairy heifers Perri, Adrián Francisco Mejía, Miguel E. Licoff, Nicolas Diab, Santiago Formía, Néstor Fabián Ornstein, Ana María Becú de Villalobos, Damasia Lacau Mengido, Isabel M. Gastrointestinal parasite control during prepuberty improves mammary parenchyma development in Holstein heifers |
topic_facet |
Ciencias Veterinarias Gastrointestinal parasites Puberty IGF-1 Mammary development Dairy heifers |
description |
Parasitism during development impairs normal growth and delays the onset of puberty through altered hormone profiles, including insulin-like growth factor one (IGF-1). Asmammary gland development during prepuberty is strongly dependent on IGF-1, we determined if antiparasitic treatment during this stage of growth improved mammary gland development. One group of Holstein heifers was treated monthly, rotationally with antiparasitic drugs from birth to 70 weeks of age, a second group was untreated. Treated heifer calves had between 56% and 65% less EPG counts than untreated ones. Presence of Ostertagia, Cooperia, Haemonchus and Trichostrongylus was demonstrated. Treatment effectively advanced the onset of puberty and increased IGF-1 levels. At 20, 30, 40 and 70 weeks of age biopsies from the mammary gland were taken and histological sections were prepared and stained with hematoxylin–eosin. Pictures were analyzed to compare parenchyma area in relation to total mammary tissue between groups. Mammary samples from treated heifers had higher ratios of parenchyma/total area than untreated ones. As mammary development during prepuberty is crucial for mammary performance during lactation, these results add new evidence to the importance of gastrointestinal parasite control in heifers. |
format |
Articulo Articulo |
author |
Perri, Adrián Francisco Mejía, Miguel E. Licoff, Nicolas Diab, Santiago Formía, Néstor Fabián Ornstein, Ana María Becú de Villalobos, Damasia Lacau Mengido, Isabel M. |
author_facet |
Perri, Adrián Francisco Mejía, Miguel E. Licoff, Nicolas Diab, Santiago Formía, Néstor Fabián Ornstein, Ana María Becú de Villalobos, Damasia Lacau Mengido, Isabel M. |
author_sort |
Perri, Adrián Francisco |
title |
Gastrointestinal parasite control during prepuberty improves mammary parenchyma development in Holstein heifers |
title_short |
Gastrointestinal parasite control during prepuberty improves mammary parenchyma development in Holstein heifers |
title_full |
Gastrointestinal parasite control during prepuberty improves mammary parenchyma development in Holstein heifers |
title_fullStr |
Gastrointestinal parasite control during prepuberty improves mammary parenchyma development in Holstein heifers |
title_full_unstemmed |
Gastrointestinal parasite control during prepuberty improves mammary parenchyma development in Holstein heifers |
title_sort |
gastrointestinal parasite control during prepuberty improves mammary parenchyma development in holstein heifers |
publishDate |
2013 |
url |
http://sedici.unlp.edu.ar/handle/10915/104605 https://ri.conicet.gov.ar/11336/1008 |
work_keys_str_mv |
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bdutipo_str |
Repositorios |
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1764820442077462528 |