Productive and reproductive efficiencyof Purunã beef cowsof differentcategories
This study was conducted at Fazenda Modelo an Experimental Estation belonged to the Instituto Agronômico do Paraná. (IAPAR), in the city of Ponta Grossa - PR, in the period from June2011 to March 2012.Purunã bovine females (n = 159) class were divided into three categories as follows: young cows (3...
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Universidade Estadual de Londrina
2014-09-01
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doaj-d6c03bb3c6084902a441c458754407612020-11-25T01:59:41ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592014-09-01354Supl12555256210.5433/1679-0359.2014v35n4Supl1p2555Productive and reproductive efficiencyof Purunã beef cowsof differentcategoriesIvan César Furmann Moura 0Fernando Kuss 1José Luis Moletta 2Douglas Sampaio Henrique 3Antônio Altino Cherubin 4Micheli de Paris5Universidade Tecnológica Federal do ParanáUniversidade Tecnológica Federal do ParanáUniversidade Tecnológica Federal do ParanáInstituto Agronômico do ParanáMonitor de Processo da Unidade Industrial de Carnes CastrolandaUniversidade Tecnológica Federal do Paraná This study was conducted at Fazenda Modelo an Experimental Estation belonged to the Instituto Agronômico do Paraná. (IAPAR), in the city of Ponta Grossa - PR, in the period from June2011 to March 2012.Purunã bovine females (n = 159) class were divided into three categories as follows: young cows (33-36 months old) adult cows (43-90 months old) and older cows (> 90 months).The negative energy balance was evident in all categories of cows with weight loss above 13 kg to 60 days postpartum. The pregnancy rate did not differ significantly among the three categories were 93% for young cows, old cows for 94% and 96% for adult cows. Adult cows weaned calves with higher weaning weight (221.20 kg) as compared to young cows (190.00 kilograms) and old (205.19 kg). Rates of the pregnant cow herd were not influenced by the category of beef cows when maintained in good body condition and nutritional at calving and during the breeding season. In these circumstances, young cows bred at two years of age are similar to productive and reproductive performance of mature cows, while the category of old cows has the lowest reproductive efficiency of breeding squad. http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/14181Calf; Performance; Weaning; Body condition; Pregnancy |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ivan César Furmann Moura Fernando Kuss José Luis Moletta Douglas Sampaio Henrique Antônio Altino Cherubin Micheli de Paris |
spellingShingle |
Ivan César Furmann Moura Fernando Kuss José Luis Moletta Douglas Sampaio Henrique Antônio Altino Cherubin Micheli de Paris Productive and reproductive efficiencyof Purunã beef cowsof differentcategories Semina: Ciências Agrárias Calf; Performance; Weaning; Body condition; Pregnancy |
author_facet |
Ivan César Furmann Moura Fernando Kuss José Luis Moletta Douglas Sampaio Henrique Antônio Altino Cherubin Micheli de Paris |
author_sort |
Ivan César Furmann Moura |
title |
Productive and reproductive efficiencyof Purunã beef cowsof differentcategories |
title_short |
Productive and reproductive efficiencyof Purunã beef cowsof differentcategories |
title_full |
Productive and reproductive efficiencyof Purunã beef cowsof differentcategories |
title_fullStr |
Productive and reproductive efficiencyof Purunã beef cowsof differentcategories |
title_full_unstemmed |
Productive and reproductive efficiencyof Purunã beef cowsof differentcategories |
title_sort |
productive and reproductive efficiencyof purunã beef cowsof differentcategories |
publisher |
Universidade Estadual de Londrina |
series |
Semina: Ciências Agrárias |
issn |
1676-546X 1679-0359 |
publishDate |
2014-09-01 |
description |
This study was conducted at Fazenda Modelo an Experimental Estation belonged to the Instituto Agronômico do Paraná. (IAPAR), in the city of Ponta Grossa - PR, in the period from June2011 to March 2012.Purunã bovine females (n = 159) class were divided into three categories as follows: young cows (33-36 months old) adult cows (43-90 months old) and older cows (> 90 months).The negative energy balance was evident in all categories of cows with weight loss above 13 kg to 60 days postpartum. The pregnancy rate did not differ significantly among the three categories were 93% for young cows, old cows for 94% and 96% for adult cows. Adult cows weaned calves with higher weaning weight (221.20 kg) as compared to young cows (190.00 kilograms) and old (205.19 kg). Rates of the pregnant cow herd were not influenced by the category of beef cows when maintained in good body condition and nutritional at calving and during the breeding season. In these circumstances, young cows bred at two years of age are similar to productive and reproductive performance of mature cows, while the category of old cows has the lowest reproductive efficiency of breeding squad.
|
topic |
Calf; Performance; Weaning; Body condition; Pregnancy |
url |
http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/14181 |
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