Effect of a feed supplementation during the mid-lactating period on body condition, milk yield, metabolic profile and pregnancy rate of grazing dual-purpose cows in the Mexican humid tropic

Forty-eight grazing mid-lactating anoestrous dual-purpose cows were used to determine the effect of feed supplementation (FS) on body condition score (BCS), milk yield, metabolic profile and pregnancy rate in the dry (DS, n= 24) and rainy (RS, n= 24) seasons in Mexico. Half of the cows received FS w...

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Autores principales:	Montiel,F, Galina,C S, Lamothe,C, Castañeda,O
Lenguaje:	English
Publicado:	Facultad de Ciencias Veterinarias, Universidad Austral de Chile 2007
Materias:	metabolites Bos taurus/Bos indicus cows
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2007000300003
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spelling	oai:scielo:S0301-732X20070003000032008-04-23Effect of a feed supplementation during the mid-lactating period on body condition, milk yield, metabolic profile and pregnancy rate of grazing dual-purpose cows in the Mexican humid tropicMontiel,FGalina,C SLamothe,CCastañeda,O metabolites Bos taurus/Bos indicus cows Forty-eight grazing mid-lactating anoestrous dual-purpose cows were used to determine the effect of feed supplementation (FS) on body condition score (BCS), milk yield, metabolic profile and pregnancy rate in the dry (DS, n= 24) and rainy (RS, n= 24) seasons in Mexico. Half of the cows received FS with 19% crude protein from days 0 to 45. On days 0 and 45 BCS was assessed in all cows, and blood samples were collected to determine the serum concentrations of some metabolites. Milk yield was individually recorded from days-7 to 45 (day 0 = start of the FS period). On day 10 all cows were induced to oestrous with norgestomet and then artificially inseminated. BCS, serum albumin concentration and pregnancy rate were higher (P < 0.05) in DS. Milk yield and serum inorganic phosphorus concentration were not affected (P > 0.05) by FS or season of the year. Serum total protein was higher (P < 0.05) on day 0 in cows receiving FS in DS. Serum urea was lower (P < 0.05) on day 45 in cows without FS in DS, but was higher on day 45 in cows with and without FS in RS (P < 0.05). Serum copper and zinc were higher (P < 0.05) in RS, and serum zinc was also higher (P < 0.05) on day 45 in cows with and without FS in DS. In conclusion, FS affected serum concentrations of total protein, urea and zinc, whereas season of the year affected BCS, serum concentrations of albumin, copper and zinc and pregnancy rateinfo:eu-repo/semantics/openAccessFacultad de Ciencias Veterinarias, Universidad Austral de ChileArchivos de medicina veterinaria v.39 n.3 20072007-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2007000300003en10.4067/S0301-732X2007000300003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	metabolites Bos taurus/Bos indicus cows
spellingShingle	metabolites Bos taurus/Bos indicus cows Montiel,F Galina,C S Lamothe,C Castañeda,O Effect of a feed supplementation during the mid-lactating period on body condition, milk yield, metabolic profile and pregnancy rate of grazing dual-purpose cows in the Mexican humid tropic
description	Forty-eight grazing mid-lactating anoestrous dual-purpose cows were used to determine the effect of feed supplementation (FS) on body condition score (BCS), milk yield, metabolic profile and pregnancy rate in the dry (DS, n= 24) and rainy (RS, n= 24) seasons in Mexico. Half of the cows received FS with 19% crude protein from days 0 to 45. On days 0 and 45 BCS was assessed in all cows, and blood samples were collected to determine the serum concentrations of some metabolites. Milk yield was individually recorded from days-7 to 45 (day 0 = start of the FS period). On day 10 all cows were induced to oestrous with norgestomet and then artificially inseminated. BCS, serum albumin concentration and pregnancy rate were higher (P < 0.05) in DS. Milk yield and serum inorganic phosphorus concentration were not affected (P > 0.05) by FS or season of the year. Serum total protein was higher (P < 0.05) on day 0 in cows receiving FS in DS. Serum urea was lower (P < 0.05) on day 45 in cows without FS in DS, but was higher on day 45 in cows with and without FS in RS (P < 0.05). Serum copper and zinc were higher (P < 0.05) in RS, and serum zinc was also higher (P < 0.05) on day 45 in cows with and without FS in DS. In conclusion, FS affected serum concentrations of total protein, urea and zinc, whereas season of the year affected BCS, serum concentrations of albumin, copper and zinc and pregnancy rate
author	Montiel,F Galina,C S Lamothe,C Castañeda,O
author_facet	Montiel,F Galina,C S Lamothe,C Castañeda,O
author_sort	Montiel,F
title	Effect of a feed supplementation during the mid-lactating period on body condition, milk yield, metabolic profile and pregnancy rate of grazing dual-purpose cows in the Mexican humid tropic
title_short	Effect of a feed supplementation during the mid-lactating period on body condition, milk yield, metabolic profile and pregnancy rate of grazing dual-purpose cows in the Mexican humid tropic
title_full	Effect of a feed supplementation during the mid-lactating period on body condition, milk yield, metabolic profile and pregnancy rate of grazing dual-purpose cows in the Mexican humid tropic
title_fullStr	Effect of a feed supplementation during the mid-lactating period on body condition, milk yield, metabolic profile and pregnancy rate of grazing dual-purpose cows in the Mexican humid tropic
title_full_unstemmed	Effect of a feed supplementation during the mid-lactating period on body condition, milk yield, metabolic profile and pregnancy rate of grazing dual-purpose cows in the Mexican humid tropic
title_sort	effect of a feed supplementation during the mid-lactating period on body condition, milk yield, metabolic profile and pregnancy rate of grazing dual-purpose cows in the mexican humid tropic
publisher	Facultad de Ciencias Veterinarias, Universidad Austral de Chile
publishDate	2007
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2007000300003
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Effect of a feed supplementation during the mid-lactating period on body condition, milk yield, metabolic profile and pregnancy rate of grazing dual-purpose cows in the Mexican humid tropic

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