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Selection objectives and criteria for sheep in Central Brazil

Three production systems for sheep (Low - L, Medium - M and High - H technology), with increasing technological levels, were studied under conditions in the Center-west of Brazil, to determine economic weights and selection indices of important traits. Receipts and costs were simulated using an econ...

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Main Authors:	Pimentel, Concepta Margaret McManus, Pinto, Bruno Freitas, Martins, Rafhael Felipe Saraiva, Louvandini, Helder, Paiva, Samuel Rezende, Braccini Neto, José, Paim, Tiago do Prado
Format:	Artigo
Language:	English
Published:	Sociedade Brasileira de Zootecnia 2017
Subjects:	Correlação (Estatística) Custos Herdabilidade Lucro Ovino
Online Access:	http://repositorio.unb.br/handle/10482/28197 https://dx.doi.org/10.1590/S1516-35982011001200014
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spelling	ir-10482-281972021-02-26T18:06:23Z Selection objectives and criteria for sheep in Central Brazil Pimentel, Concepta Margaret McManus Pinto, Bruno Freitas Martins, Rafhael Felipe Saraiva Louvandini, Helder Paiva, Samuel Rezende Braccini Neto, José Paim, Tiago do Prado Correlação (Estatística) Custos Herdabilidade Lucro Ovino Three production systems for sheep (Low - L, Medium - M and High - H technology), with increasing technological levels, were studied under conditions in the Center-west of Brazil, to determine economic weights and selection indices of important traits. Receipts and costs were simulated using an economic simulator to calculate the structure of the operational costs. Only characteristics that were responsible for more than 10% of the profit were studied, which included: number of weaned lambs, food consumption (ewe and lamb), weight of carcass and weight of female lambs sold for reproduction. Regardless of the index used (profitability or yield) or system (L, M or H), the economic weights are larger for the number of lambs weaned per ewe. With improvement in the technology used within the production system (H to L) the importance of this trait becomes less important. Lamb growth increased and weight of female for slaughter decreased in importance in higher technology systems. Changes in herd structure had little influence on economic values, whereas (co)variances were important sources of change in selection indices. 2017-12-07T04:57:18Z 2017-12-07T04:57:18Z 2011-12 Artigo MCMANUS, Concepta et al. Selection objectives and criteria for sheep in Central Brazil. Revista Brasileira de Zootecnia, Viçosa, v. 40, n. 12, p. 2713-2720, dez. 2011. DOI: https://doi.org/10.1590/S1516-35982011001200014. Disponível em: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001200014&lng=en&nrm=iso. Acesso em: 12 jan. 2021. http://repositorio.unb.br/handle/10482/28197 https://dx.doi.org/10.1590/S1516-35982011001200014 en Acesso Aberto Revista Brasileira de Zootecnia - All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License (CC BY NC 4.0). Fonte: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001200014&lng=en&tlng=en. Acesso em: 12 jan. 2021. application/pdf Sociedade Brasileira de Zootecnia
institution	REPOSITORIO UNB
collection	REPOSITORIO UNB
language	English
topic	Correlação (Estatística) Custos Herdabilidade Lucro Ovino
spellingShingle	Correlação (Estatística) Custos Herdabilidade Lucro Ovino Pimentel, Concepta Margaret McManus Pinto, Bruno Freitas Martins, Rafhael Felipe Saraiva Louvandini, Helder Paiva, Samuel Rezende Braccini Neto, José Paim, Tiago do Prado Selection objectives and criteria for sheep in Central Brazil
description	Three production systems for sheep (Low - L, Medium - M and High - H technology), with increasing technological levels, were studied under conditions in the Center-west of Brazil, to determine economic weights and selection indices of important traits. Receipts and costs were simulated using an economic simulator to calculate the structure of the operational costs. Only characteristics that were responsible for more than 10% of the profit were studied, which included: number of weaned lambs, food consumption (ewe and lamb), weight of carcass and weight of female lambs sold for reproduction. Regardless of the index used (profitability or yield) or system (L, M or H), the economic weights are larger for the number of lambs weaned per ewe. With improvement in the technology used within the production system (H to L) the importance of this trait becomes less important. Lamb growth increased and weight of female for slaughter decreased in importance in higher technology systems. Changes in herd structure had little influence on economic values, whereas (co)variances were important sources of change in selection indices.
format	Artigo
author	Pimentel, Concepta Margaret McManus Pinto, Bruno Freitas Martins, Rafhael Felipe Saraiva Louvandini, Helder Paiva, Samuel Rezende Braccini Neto, José Paim, Tiago do Prado
author_sort	Pimentel, Concepta Margaret McManus
title	Selection objectives and criteria for sheep in Central Brazil
title_short	Selection objectives and criteria for sheep in Central Brazil
title_full	Selection objectives and criteria for sheep in Central Brazil
title_fullStr	Selection objectives and criteria for sheep in Central Brazil
title_full_unstemmed	Selection objectives and criteria for sheep in Central Brazil
title_sort	selection objectives and criteria for sheep in central brazil
publisher	Sociedade Brasileira de Zootecnia
publishDate	2017
url	http://repositorio.unb.br/handle/10482/28197 https://dx.doi.org/10.1590/S1516-35982011001200014
_version_	1693127007430246400
score	13.657419

Selection objectives and criteria for sheep in Central Brazil

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