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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
12/08/2021 |
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Data da última atualização: |
12/08/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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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. |
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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. |
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Título: |
Energy requirements for pregnant dairy cows. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
PLoS One, v. 15, n. 7, e0235619, 2020. |
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DOI: |
https://doi.org/ 10.1371/journal.pone.0235619 |
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Idioma: |
Inglês |
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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 |
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Thesagro: |
Gado Leiteiro. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/225095/1/Energy-requirements.pdf
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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.
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Embrapa Gado de Leite (CNPGL) |
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| 1. |  | TOMQUELSKI, G. V.; HIROSE, E.; FARIAS, A.; CZEPAK, C.; PITTELKOW, F. K.; RUTHES, E.; GRIGOLLI, J. F. J.; RATTES, J.; VIVAN, L. M.; GOUSSAIN JUNIOR, M. M.; PEIXOTO, M. F.; TAMAI, M. A.; IDE, M. A.; MARTINS, M. C.; LOBAK, T. Eficiência de inseticidas para o controle da mosca-branca Bemisia tabaci biótipo B (Hemiptera: Aleyrodidae) em soja nas safras 2017/2018 e 2018/2019: resultados sumarizados dos ensaios cooperativos. Londrina: Embrapa Soja, 2020. 9 p. (Embrapa Soja. Circular técnica, 158).| Biblioteca(s): Embrapa Soja. |
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| 2. | | ROGGIA, S.; UTIAMADA, C. M.; HIROSE, E.; ROY, J. M. T.; TOMQUELSKI, G. V.; JAKOBY, G. L.; GUEDES, J. V. C.; GRIGOLLI, J. F. J.; RATTES, J. F.; VIVAN, L. M.; MARCHIORO, L.; CURIOLETTI, L. E.; SATO, L. N.; PEIXOTO, M. F.; GOUSSAIN JUNIOR, M. M.; TAMAI, M. A.; GRIGOLLI, M. M. K.; MARTINS, M. C.; MADALOSSO, T. Eficiência de inseticidas no controle do percevejo-marrom (Euschistus heros) em soja, na safra 2018/2019: resultados sumarizados de ensaios cooperativos. Londrina: Embrapa Soja, 2019. 18 p. (Embrapa Soja. Circular técnica, 154).| Biblioteca(s): Embrapa Soja. |
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| 3. | | ROGGIA, S.; UTIAMADA, C. M.; HIROSE, E.; STOETZER, A.; AVILA, C. J.; KISCHEL, E.; MARZAROTTO, F. O.; TOMQUELSKI, G. V.; GUEDES, J. V. C.; ARNEMANN, J. A.; GRIGOLLI, J. F. J.; FARIAS, J. R.; VIVAN, L. M.; SATO, L. N.; PEIXOTO, M. F.; GOUSSAIN JUNIOR, M. M.; TAMAI, M. A.; OLIVEIRA, M. C. N. de; MARTINS, M. C.; BELLETTINI, S.; BORATTO, V. N. M.; NASCIMENTO, V. L. do; VENANCIO, W. S. Eficiência de inseticidas no controle do percevejo-marrom (Euschistus heros) em soja, na safra 2013/14: resultados sumarizados de ensaios cooperativos. Londrina: Embrapa Soja, 2018. 22 p. (Embrapa Soja. Circular técnica, 137).| Biblioteca(s): Embrapa Soja. |
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| 4. | | GRIGOLLI, J. F. J.; AVILA, C. J.; OLIVEIRA, H. N. de; TOMQUELSKI, G. V.; SANTOS, V. Mapping the occurrence and density of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) in Mato Grosso do Sul State, Brazil. Journal of Entomology and Nematology, v. 8, n. 4, p. 28-33, Oct. 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: C - 0 |
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| Registros recuperados : 10 | |
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