Effect of feeding and housing systems on rumen properties and plasma metabolite stress indicators in autochthonous Spanish Ojalada sheep

To rear lambs of the Ojalada breed, fed exclusively on mothers' milk until 5 weeks, three feeding systems were compared: a) ewes kept indoors and fed chopped straw plus concentrate (IND+CH+C), total mixed ration (TMR); b) ewes kept indoors and fed whole straw in the form of large bales plus con...

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Autores principales:	Miguel,José A, Calvo,José L, Ciria,Jesús, Asenjo,Begoña
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2015
Materias:	Barley straw ewe grazing local Spanish breed
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000100007
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spelling	oai:scielo:S0718-162020150001000072015-05-27Effect of feeding and housing systems on rumen properties and plasma metabolite stress indicators in autochthonous Spanish Ojalada sheepMiguel,José ACalvo,José LCiria,JesúsAsenjo,Begoña Barley straw ewe grazing local Spanish breed To rear lambs of the Ojalada breed, fed exclusively on mothers' milk until 5 weeks, three feeding systems were compared: a) ewes kept indoors and fed chopped straw plus concentrate (IND+CH+C), total mixed ration (TMR); b) ewes kept indoors and fed whole straw in the form of large bales plus concentrate (IND+W+C), TMR; and c) free-range grazing plus concentrate (GR+C; control group). Parameters related to ruminal fermentation (pH, NH3-N concentration and proportion of volatile fatty acids (VFAs)) in 40 sheep during a production cycle were monitored. The plasma concentrations of stress-related metabolites (i.e., glucose, lactate, phosphate, creatine kinase (CK), cortisol and non-esterified fatty acids (NEFAs)) during a production cycle and in 10 sheep during lactation (5 weeks) were tested. The sheep fed a whole forage ration (IND+W+C and GR+C treatment group) had higher concentrations of NH3-N and total VFAs, but no differences were found in the acetate/propionate ratio in sheep in the IND+CH+C treatment group compared to the control group. When analyzing plasma metabolites, we found that during the entire production cycle, grazing sheep had higher concentrations of glucose and cortisol. The concentration of NEFAs was also higher for the GR+C treatment group when evaluated during lactation. Thus, we concluded that the ration particle size for sheep fed a TMR influences the concentration of NH3-N and VFAs in the rumen. Keeping the sheep indoors during the production cycle and during lactation did not increase the plasma levels of the evaluated stress indicators.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.42 n.1 20152015-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000100007en10.4067/S0718-16202015000100007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Barley straw ewe grazing local Spanish breed
spellingShingle	Barley straw ewe grazing local Spanish breed Miguel,José A Calvo,José L Ciria,Jesús Asenjo,Begoña Effect of feeding and housing systems on rumen properties and plasma metabolite stress indicators in autochthonous Spanish Ojalada sheep
description	To rear lambs of the Ojalada breed, fed exclusively on mothers' milk until 5 weeks, three feeding systems were compared: a) ewes kept indoors and fed chopped straw plus concentrate (IND+CH+C), total mixed ration (TMR); b) ewes kept indoors and fed whole straw in the form of large bales plus concentrate (IND+W+C), TMR; and c) free-range grazing plus concentrate (GR+C; control group). Parameters related to ruminal fermentation (pH, NH3-N concentration and proportion of volatile fatty acids (VFAs)) in 40 sheep during a production cycle were monitored. The plasma concentrations of stress-related metabolites (i.e., glucose, lactate, phosphate, creatine kinase (CK), cortisol and non-esterified fatty acids (NEFAs)) during a production cycle and in 10 sheep during lactation (5 weeks) were tested. The sheep fed a whole forage ration (IND+W+C and GR+C treatment group) had higher concentrations of NH3-N and total VFAs, but no differences were found in the acetate/propionate ratio in sheep in the IND+CH+C treatment group compared to the control group. When analyzing plasma metabolites, we found that during the entire production cycle, grazing sheep had higher concentrations of glucose and cortisol. The concentration of NEFAs was also higher for the GR+C treatment group when evaluated during lactation. Thus, we concluded that the ration particle size for sheep fed a TMR influences the concentration of NH3-N and VFAs in the rumen. Keeping the sheep indoors during the production cycle and during lactation did not increase the plasma levels of the evaluated stress indicators.
author	Miguel,José A Calvo,José L Ciria,Jesús Asenjo,Begoña
author_facet	Miguel,José A Calvo,José L Ciria,Jesús Asenjo,Begoña
author_sort	Miguel,José A
title	Effect of feeding and housing systems on rumen properties and plasma metabolite stress indicators in autochthonous Spanish Ojalada sheep
title_short	Effect of feeding and housing systems on rumen properties and plasma metabolite stress indicators in autochthonous Spanish Ojalada sheep
title_full	Effect of feeding and housing systems on rumen properties and plasma metabolite stress indicators in autochthonous Spanish Ojalada sheep
title_fullStr	Effect of feeding and housing systems on rumen properties and plasma metabolite stress indicators in autochthonous Spanish Ojalada sheep
title_full_unstemmed	Effect of feeding and housing systems on rumen properties and plasma metabolite stress indicators in autochthonous Spanish Ojalada sheep
title_sort	effect of feeding and housing systems on rumen properties and plasma metabolite stress indicators in autochthonous spanish ojalada sheep
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000100007
work_keys_str_mv	AT migueljosea effectoffeedingandhousingsystemsonrumenpropertiesandplasmametabolitestressindicatorsinautochthonousspanishojaladasheep AT calvojosel effectoffeedingandhousingsystemsonrumenpropertiesandplasmametabolitestressindicatorsinautochthonousspanishojaladasheep AT ciriajesus effectoffeedingandhousingsystemsonrumenpropertiesandplasmametabolitestressindicatorsinautochthonousspanishojaladasheep AT asenjobegona effectoffeedingandhousingsystemsonrumenpropertiesandplasmametabolitestressindicatorsinautochthonousspanishojaladasheep
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Effect of feeding and housing systems on rumen properties and plasma metabolite stress indicators in autochthonous Spanish Ojalada sheep

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