| |
|
|
| Registros recuperados : 196 | |
| 41. |  | MAEDA, S.; BOGNOLA, I. A.; SILVA, H. D. da. Efeito de resíduos da indústria de celulose e papel em características químicas relativas à fertilidade de um Cambissolo Húmico Distrófico típico. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 29.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 13.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 11.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 8., 2010, Guarapari. Fontes de nutrientes e produção agrícola: modelando o futuro: anais. Viçosa, MG: Sociedade Brasileira de Ciência do Solo, 2010. 4 p. CD-ROM. FertBio 2010.| Biblioteca(s): Embrapa Florestas. |
|    |
| 46. | | MAEDA, S.; BOGNOLA, I. A.; GOMES, J. B. V. Efeito de cinza de biomassa florestal no crescimento e na nutrição de Pinus taeda e em características químicas do solo. Pesquisa Florestal Brasileira, Colombo, v. 39, (nesp), e201902043, 2019. p. 407. Edição especial dos resumos do IUFRO World Congress, 25., 2019, Curitiba.| Biblioteca(s): Embrapa Florestas. |
| |
| 57. | | BOGNOLA, I. A.; LINGNAU, C.; LAVORANTI, O. J.; STOLLE, L.; OLIVEIRA, E. B. de. Geoestatística integrada com estatística multivariada e geoprocessamento na definição de unidades de manejo para o Pinus taeda. In: INAMASU, R. Y.; NAIME, J. de M.; RESENDE, A. V. de; BASSOI, L. H.; BERNARDI, A. C. de C. (Ed.). Agricultura de precisão: um novo olhar. São Carlos: Embrapa Instrumentação, 2011. p. 227-231.| Biblioteca(s): Embrapa Florestas. |
| |
| Registros recuperados : 196 | |
|
|
|
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 |
|
Circulação/Nível: |
A - 1 |
|
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 |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
