Comparative evaluation of udder and body conformation traits of first lactation ¾ Holstein ¼ Jersey versus Holstein cows

To facilitate the process of decision-making in selecting specific breeds for crossbreeding, this study aimed to determine the conformation traits of ¾ Holstein (HO) x ¼ Jersey (JE) crossbreds, relative to their pure HO contemporaries during the first lactation. All measurements were objectively rec...

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Autores principales:	Bretschneider,G, Arias,D, Cuatrin,A
Lenguaje:	English
Publicado:	Facultad de Ciencias Veterinarias, Universidad Austral de Chile 2015
Materias:	crossbreeding conformation culling udder
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2015000100014
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spelling	oai:scielo:S0301-732X20150001000142016-07-04Comparative evaluation of udder and body conformation traits of first lactation ¾ Holstein ¼ Jersey versus Holstein cowsBretschneider,GArias,DCuatrin,A crossbreeding conformation culling udder To facilitate the process of decision-making in selecting specific breeds for crossbreeding, this study aimed to determine the conformation traits of ¾ Holstein (HO) x ¼ Jersey (JE) crossbreds, relative to their pure HO contemporaries during the first lactation. All measurements were objectively recorded on first-calf heifers between 40 and 100 days in milk. Crossbreds had smaller stature (-9.62 cm; P = 0.0001), narrower rump width (-1.55 cm; P = 0.005), shallower body depth (-6.45 cm; P = 0.04), smaller heart girth (-10.43 cm; P = 0.0001), narrower chest width (-2.18 cm; P = 0.006), and lower foot angle (-4.61°; P = 0.02) than HO first-calf heifers. Among udder traits, HO x JE crossbreds had deeper (+3.80 cm; P = 0.006) and narrower (-2.32 cm; P = 0.001) udders with longer front teats (+0.54 cm; P = 0.04) compared with HO. It is suggested that certain aspects of the mammary conformation of ¾ HO x ¼ JE crossbreds, as identified in this study, may be animal-associated risk factors of concern for cow culling, mainly in high input production systems.info:eu-repo/semantics/openAccessFacultad de Ciencias Veterinarias, Universidad Austral de ChileArchivos de medicina veterinaria v.47 n.1 20152015-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2015000100014en10.4067/S0301-732X2015000100014
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	crossbreeding conformation culling udder
spellingShingle	crossbreeding conformation culling udder Bretschneider,G Arias,D Cuatrin,A Comparative evaluation of udder and body conformation traits of first lactation ¾ Holstein ¼ Jersey versus Holstein cows
description	To facilitate the process of decision-making in selecting specific breeds for crossbreeding, this study aimed to determine the conformation traits of ¾ Holstein (HO) x ¼ Jersey (JE) crossbreds, relative to their pure HO contemporaries during the first lactation. All measurements were objectively recorded on first-calf heifers between 40 and 100 days in milk. Crossbreds had smaller stature (-9.62 cm; P = 0.0001), narrower rump width (-1.55 cm; P = 0.005), shallower body depth (-6.45 cm; P = 0.04), smaller heart girth (-10.43 cm; P = 0.0001), narrower chest width (-2.18 cm; P = 0.006), and lower foot angle (-4.61°; P = 0.02) than HO first-calf heifers. Among udder traits, HO x JE crossbreds had deeper (+3.80 cm; P = 0.006) and narrower (-2.32 cm; P = 0.001) udders with longer front teats (+0.54 cm; P = 0.04) compared with HO. It is suggested that certain aspects of the mammary conformation of ¾ HO x ¼ JE crossbreds, as identified in this study, may be animal-associated risk factors of concern for cow culling, mainly in high input production systems.
author	Bretschneider,G Arias,D Cuatrin,A
author_facet	Bretschneider,G Arias,D Cuatrin,A
author_sort	Bretschneider,G
title	Comparative evaluation of udder and body conformation traits of first lactation ¾ Holstein ¼ Jersey versus Holstein cows
title_short	Comparative evaluation of udder and body conformation traits of first lactation ¾ Holstein ¼ Jersey versus Holstein cows
title_full	Comparative evaluation of udder and body conformation traits of first lactation ¾ Holstein ¼ Jersey versus Holstein cows
title_fullStr	Comparative evaluation of udder and body conformation traits of first lactation ¾ Holstein ¼ Jersey versus Holstein cows
title_full_unstemmed	Comparative evaluation of udder and body conformation traits of first lactation ¾ Holstein ¼ Jersey versus Holstein cows
title_sort	comparative evaluation of udder and body conformation traits of first lactation ¾ holstein ¼ jersey versus holstein cows
publisher	Facultad de Ciencias Veterinarias, Universidad Austral de Chile
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2015000100014
work_keys_str_mv	AT bretschneiderg comparativeevaluationofudderandbodyconformationtraitsoffirstlactation3⁄4holstein1⁄4jerseyversusholsteincows AT ariasd comparativeevaluationofudderandbodyconformationtraitsoffirstlactation3⁄4holstein1⁄4jerseyversusholsteincows AT cuatrina comparativeevaluationofudderandbodyconformationtraitsoffirstlactation3⁄4holstein1⁄4jerseyversusholsteincows
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Comparative evaluation of udder and body conformation traits of first lactation ¾ Holstein ¼ Jersey versus Holstein cows

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