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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
26/08/2016 |
Data da última atualização: |
03/10/2016 |
Autoria: |
STEPHENSON, R. G. A.; EDWARDS, J. C.; HOPKINS, P. S. |
Título: |
The use of urea to improve milk yields and lamb survival of Merinos in a dry tropical environment. |
Ano de publicação: |
1981 |
Fonte/Imprenta: |
Australian Journal of Agricultural Research, v. 32, n. 3, p. 497-509, 1981. |
DOI: |
10.1071/AR9810497 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Urea supplementation of lambing Merino ewes increased milk yield and lamb growth and survival rates in both pen and paddock studies. These productivity gains occurred in a semi-arid environment characterized by poor reproductive efficiency in Merinos. In pens, urea supplenlents fed to lactating ewes at the rate of c. 12 g/day stimulated intake of poor quality pasture hay (0.9 %nitrogen) by c. 30% and increased total nitrogen intake by c. 100%. Milk yield was improved by c. 50% and lamb growth rate by c. 140%. Sorghum grain supplements stimulated milk yield and lamb growth to a lesser extent than urea. The correlations found in pen studies between nitrogen intake and milk yield of ewes (r ÿ 0.85; P < 0.05), and between ewe milk yield and lamb growth (r % 0.80; P < 0.01), prompted further investigations under paddock conditions. Ewes grazing dry pastures and supplemented with urea (8-10 glday) via drinking water yielded more milk (11-32%) than unsupplemented counterparts. Similarly, there were improvements in lamb growth (80-100%) and survival (c. 10%) in the supplemented groups. |
Palavras-Chave: |
Dry period; Produção de leite; Semiárido. |
Thesagro: |
Cordeiro; Crescimento; Ovino; Rendimento; Suplemento nitrogenado; Uréia. |
Thesaurus Nal: |
Milk production; Semiarid zones; Sheep. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01953naa a2200301 a 4500 001 2051784 005 2016-10-03 008 1981 bl uuuu u00u1 u #d 024 7 $a10.1071/AR9810497$2DOI 100 1 $aSTEPHENSON, R. G. A. 245 $aThe use of urea to improve milk yields and lamb survival of Merinos in a dry tropical environment. 260 $c1981 520 $aAbstract: Urea supplementation of lambing Merino ewes increased milk yield and lamb growth and survival rates in both pen and paddock studies. These productivity gains occurred in a semi-arid environment characterized by poor reproductive efficiency in Merinos. In pens, urea supplenlents fed to lactating ewes at the rate of c. 12 g/day stimulated intake of poor quality pasture hay (0.9 %nitrogen) by c. 30% and increased total nitrogen intake by c. 100%. Milk yield was improved by c. 50% and lamb growth rate by c. 140%. Sorghum grain supplements stimulated milk yield and lamb growth to a lesser extent than urea. The correlations found in pen studies between nitrogen intake and milk yield of ewes (r ÿ 0.85; P < 0.05), and between ewe milk yield and lamb growth (r % 0.80; P < 0.01), prompted further investigations under paddock conditions. Ewes grazing dry pastures and supplemented with urea (8-10 glday) via drinking water yielded more milk (11-32%) than unsupplemented counterparts. Similarly, there were improvements in lamb growth (80-100%) and survival (c. 10%) in the supplemented groups. 650 $aMilk production 650 $aSemiarid zones 650 $aSheep 650 $aCordeiro 650 $aCrescimento 650 $aOvino 650 $aRendimento 650 $aSuplemento nitrogenado 650 $aUréia 653 $aDry period 653 $aProdução de leite 653 $aSemiárido 700 1 $aEDWARDS, J. C. 700 1 $aHOPKINS, P. S. 773 $tAustralian Journal of Agricultural Research$gv. 32, n. 3, p. 497-509, 1981.
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Embrapa Caprinos e Ovinos (CNPC) |
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1. | | CROUS, P. W.; WINGFIELD, M. J.; BURGESS, T. I.; HARDY, G. E. ST. J.; CRANE, C.; BARRETT, S.; CANO-LIRA, J. F.; LEROUX, J. J.; THANGAVEL, R.; GUARRO, J.; STCHIGEL, A. M.; MARTÍN, M. P.; ALFREDO, D. S.; BARBER, P. A.; BARRETO, R. W.; BASEIA, I. G.; CANO-CANALS, J.; CHEEWANGKOON, R.; FERREIRA, R. J.; GENÉ, J.; LECHAT, C.; MORENO, G.; ROETS, F.; SHIVAS, R. G.; SOUSA, J. O.; TAN, Y. P.; WIEDERHOLD, N. P.; ABELL, S. E.; ACCIOLY, T.; ALBIZU, J. L.; ALVES, J. L.; ANTONIOLLI, Z. I.; APLIN, N.; ARAÚJO, J.; ARZANLOU, M.; BEZERRA, J. D. P.; BOUCHARA, J.-P.; CARLAVILLA, J. R.; CASTILLO, A.; CASTROAGUDÍN, V. L.; CERESINI, P. C.; CLARIDGE, G. F.; COELHO, G.; COIMBRA, V. R. M.; COSTA, L. A.; CUNHA, K. C. da; SILVA, S. S. da; DANIEL, R.; DE BEER, Z. W.; DUEÑAS, M.; EDWARDS, J.; ENWISTLE, P.; FIUZA, P. O.; FOURNIER, J.; GARCÍA, D.; GIBERTONI, T. B.; GIRAUD, S.; GUEVARA-SUAREZ, M.; GUSMÃO, L. F. P.; HAITUK, S.; HEYKOOP, M.; HIROOKA, Y.; HOFMANN, T. A.; HOUBRAKEN, J.; HUGHES, D. P.; KAUTMANOVÁ, I.; KOPPEL, O.; KOUKOL, O.; LARSSON, E.; LATHA, K. P. D.; LEE, D. H.; LISBOA, D. O.; LISBOA, W. S.; LÓPEZ-VILLALBA, Á.; MACIEL, J. L. N.; MANIMOHAN, P.; MANJÓN, J. L.; MARINCOWITZ, S.; MARNEY, T. S.; MEIJER, M.; MILLER, A. N.; OLARIAGA, I.; PAIVA, L. M.; PIEPENBRING, M.; POVEDA-MOLERO, J. C.; RAJ, K. N. A.; RAJA, H. A.; ROUGERON, A.; SALCEDO, I.; SAMADI, R.; SANTOS, T. A. B.; SCARLETT, K.; SEIFERT, K. A.; SHUTTLEWORTH, L. A.; SILVA, G. A.; SILVA, M.; SIQUEIRA, J. P. Z.; SOUZA-MOTTA, C. M.; STEPHENSON, S. L. Fungal planet description sheets: 469-557. Persoonia, Leiden, v. 37, p. 218-403, Dec. 2016.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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