|
|
Registro Completo |
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
12/08/2021 |
Data da última atualização: |
12/08/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SGUIZZATO, A. L. L.; MARCONDES, M. I.; DIJKSTRA, J.; VALADARES FILHO, S. de C.; CAMPOS, M. M.; MACHADO, F. S.; SILVA, B. C.; ROTTA, P. P. |
Afiliação: |
ANNA LUIZA LACERDA SGUIZZATO, Universidade Federal de Viçosa; MARCOS INÁCIO MARCONDES, Universidade Federal de Viçosa; JAN DIJKSTRAI, Wageningen University; SEBASTIÃO DE CAMPOS VALADARES FILHO, Universidade Federal de Viçosa; MARIANA MAGALHAES CAMPOS, CNPGL; FERNANDA SAMARINI MACHADO, CNPGL; BRENO CASTRO SILVA, Universidade Federal de Viçosa; POLYANA PIZZI ROTTA, Universidade Federal de Viçosa. |
Título: |
Energy requirements for pregnant dairy cows. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
PLoS One, v. 15, n. 7, e0235619, 2020. |
DOI: |
https://doi.org/ 10.1371/journal.pone.0235619 |
Idioma: |
Inglês |
Conteúdo: |
This study aimed to estimate energy requirements of pregnant Holstein × Gyr cows. Different planes of nutrition were established by two feeding regimens: ad libitum or maintenance. Sixty-two nonlactating cows with average body weight of 480 ± 10.1 kg and an age of 5 ± 0.5 years were used. Cows were divided into three groups: pregnant (n = 44), non-pregnant (n=12), and baseline reference (n = 6). The 56 pregnant and non-pregnant cows were randomly allocated into a feeding regimen: ad libitum or maintenance. To evaluate the effects of days of pregnancy, pregnant and non-pregnant animals were slaughtered at 140, 200, 240, and 270 days of pregnancy. Energy requirements for maintenance differed between pregnant and non-pregnant cows, thus two equations were developed. Net energy and metabolizable energy requirements for maintenance of non-pregnant cows were 82 kcal/kg empty body weight0.75/day and 132 kcal/kg empty body weight0.75/day, respectively. The efficiency of use of metabolizable energy for maintenance of non-pregnant cows was 62.4%. Net energy and metabolizable energy for maintenance of pregnant cows were 86 kcal/kg empty body weight0.75/day and 137 kcal/kg empty body weight0.75/day, respectively. Efficiency of use of metabolizable energy for maintenance of pregnant cows was 62.5%. The efficiency of use of metabolizable energy for gain was 41.9%. The efficiency of use of metabolizable energy for pregnancy was 14.1%. Furthermore, net energy requirement for pregnancy was different from zero from day 70 of pregnancy onwards. In conclusion, net energy and metabolizable energy requirements for maintenance of non-pregnant cows are different from pregnant cows. Furthermore, we believe that the proposed non-linear equations to estimate net energy requirements for pregnancy are more adequate than current NRC equation, and should be recommended for Holstein × Gyr cows. MenosThis study aimed to estimate energy requirements of pregnant Holstein × Gyr cows. Different planes of nutrition were established by two feeding regimens: ad libitum or maintenance. Sixty-two nonlactating cows with average body weight of 480 ± 10.1 kg and an age of 5 ± 0.5 years were used. Cows were divided into three groups: pregnant (n = 44), non-pregnant (n=12), and baseline reference (n = 6). The 56 pregnant and non-pregnant cows were randomly allocated into a feeding regimen: ad libitum or maintenance. To evaluate the effects of days of pregnancy, pregnant and non-pregnant animals were slaughtered at 140, 200, 240, and 270 days of pregnancy. Energy requirements for maintenance differed between pregnant and non-pregnant cows, thus two equations were developed. Net energy and metabolizable energy requirements for maintenance of non-pregnant cows were 82 kcal/kg empty body weight0.75/day and 132 kcal/kg empty body weight0.75/day, respectively. The efficiency of use of metabolizable energy for maintenance of non-pregnant cows was 62.4%. Net energy and metabolizable energy for maintenance of pregnant cows were 86 kcal/kg empty body weight0.75/day and 137 kcal/kg empty body weight0.75/day, respectively. Efficiency of use of metabolizable energy for maintenance of pregnant cows was 62.5%. The efficiency of use of metabolizable energy for gain was 41.9%. The efficiency of use of metabolizable energy for pregnancy was 14.1%. Furthermore, net energy requirement for pregnancy was d... Mostrar Tudo |
Thesagro: |
Gado Leiteiro. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/225095/1/Energy-requirements.pdf
|
Marc: |
LEADER 02554naa a2200229 a 4500 001 2133488 005 2021-08-12 008 2020 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/ 10.1371/journal.pone.0235619$2DOI 100 1 $aSGUIZZATO, A. L. L. 245 $aEnergy requirements for pregnant dairy cows.$h[electronic resource] 260 $c2020 520 $aThis study aimed to estimate energy requirements of pregnant Holstein × Gyr cows. Different planes of nutrition were established by two feeding regimens: ad libitum or maintenance. Sixty-two nonlactating cows with average body weight of 480 ± 10.1 kg and an age of 5 ± 0.5 years were used. Cows were divided into three groups: pregnant (n = 44), non-pregnant (n=12), and baseline reference (n = 6). The 56 pregnant and non-pregnant cows were randomly allocated into a feeding regimen: ad libitum or maintenance. To evaluate the effects of days of pregnancy, pregnant and non-pregnant animals were slaughtered at 140, 200, 240, and 270 days of pregnancy. Energy requirements for maintenance differed between pregnant and non-pregnant cows, thus two equations were developed. Net energy and metabolizable energy requirements for maintenance of non-pregnant cows were 82 kcal/kg empty body weight0.75/day and 132 kcal/kg empty body weight0.75/day, respectively. The efficiency of use of metabolizable energy for maintenance of non-pregnant cows was 62.4%. Net energy and metabolizable energy for maintenance of pregnant cows were 86 kcal/kg empty body weight0.75/day and 137 kcal/kg empty body weight0.75/day, respectively. Efficiency of use of metabolizable energy for maintenance of pregnant cows was 62.5%. The efficiency of use of metabolizable energy for gain was 41.9%. The efficiency of use of metabolizable energy for pregnancy was 14.1%. Furthermore, net energy requirement for pregnancy was different from zero from day 70 of pregnancy onwards. In conclusion, net energy and metabolizable energy requirements for maintenance of non-pregnant cows are different from pregnant cows. Furthermore, we believe that the proposed non-linear equations to estimate net energy requirements for pregnancy are more adequate than current NRC equation, and should be recommended for Holstein × Gyr cows. 650 $aGado Leiteiro 700 1 $aMARCONDES, M. I. 700 1 $aDIJKSTRA, J. 700 1 $aVALADARES FILHO, S. de C. 700 1 $aCAMPOS, M. M. 700 1 $aMACHADO, F. S. 700 1 $aSILVA, B. C. 700 1 $aROTTA, P. P. 773 $tPLoS One$gv. 15, n. 7, e0235619, 2020.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Agroindústria de Alimentos. Para informações adicionais entre em contato com ctaa.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
Data corrente: |
25/11/2002 |
Data da última atualização: |
23/05/2007 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Circulação/Nível: |
-- - -- |
Autoria: |
ROSENTHAL, A.; FARIAS, A. X.; OLIVEIRA, S. D.; ALVARENGA, A. L. B.; GUERRA, F. D.; MASSAGUER, P. |
Título: |
Evaluation of thermal pasteurization of aseptic packaged pineapple juice. |
Ano de publicação: |
2001 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 21., 2001, Foz do Iguacu, PR. Resumos... SBM, 2001. p. 391, ref. AL-099. |
Páginas: |
1 p. |
Idioma: |
Inglês |
Palavras-Chave: |
Frutas. |
Thesagro: |
Abacaxi; Conservação; Pasteurização; Suco. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00704naa a2200241 a 4500 001 1414206 005 2007-05-23 008 2001 bl --- 0-- u #d 100 1 $aROSENTHAL, A. 245 $aEvaluation of thermal pasteurization of aseptic packaged pineapple juice. 260 $c2001 300 $a1 p. 650 $aAbacaxi 650 $aConservação 650 $aPasteurização 650 $aSuco 653 $aFrutas 700 1 $aFARIAS, A. X. 700 1 $aOLIVEIRA, S. D. 700 1 $aALVARENGA, A. L. B. 700 1 $aGUERRA, F. D. 700 1 $aMASSAGUER, P. 773 $tIn: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 21., 2001, Foz do Iguacu, PR. Resumos... SBM, 2001. p. 391, ref. AL-099.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Agroindústria de Alimentos (CTAA) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|