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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
14/04/2004 |
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Data da última atualização: |
14/04/2004 |
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Autoria: |
AJONYE, M; LWANGA CHARLES; SSEMAKULA, G; OTIM-NAPE, G.W; BAGUMA, Y. K; OBA, J. R. |
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Título: |
Progress in cassava micropropagation in Uganda. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Revista Brasileira de Mandioca,Cruz das Almas, v.17, p.49, nov, 1998. Suplemento. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Micropropagation (in vitro culture) of some farmer prefered cassava varieties was investigated, inorder to suplement existing multiplication techniques (farme's and rapid multiplication methods). The best medium formulation for initiation and multiplication of the variety SS4 was standard modified Murashige and Skoog's (MS) (1962) medium supplemented with 0.05 mg/l benzyl aminopurine (BAP), 0.01 mg/l naphthyl acetic acid (NAA) and 1 mg/l gibberellic acid (GA). For variety TMS 2 (4) 1425, the same formulation favoured culture initiation, but further multiplication (subculturing) required basic MS medium without growth regulator supplement. Six substrates namely: coffee husks, 100%; top soil, 100%; soil/sawdust mixture, 50:50; and farmyard manure, were tested for plantlet response, for weaning and hardenig. The best growth occured in soil and the worst in coffee husks and dairy manure. The effect of plantlet age at 2,4 and 8 weeks after, was investigated in relation to plant survival. The lowest survival rates occured at two weeks after subculture (SS4, 95% and TMS 2 (4) 1425, 93%). The optimum age for the highest survival was 4 weeks after subculture. Varietal differences significantly (P>0.05) occured at 8 weeks after subculture, with SS4 having 95% better perfomance than TMS 2 (4) 1425, 80%. Successful field establishment occured at MUARIK (100%) and Namulonge (70%). Approximately 7000 plantlets were established in the field within one year. The first generation of plantlets fron MUARIK flowered at 7 months after planting (MAP). one thousand stems were harvested at MAP, from which stakes planted 0.7 ha of land were obtained. Farmers held high opinion of in vitro cassava plantlets. All the selected farmers for the demostration reported 100% survival in preliminary field trials. Initial tecnical and economic comparison of the multiplication techniques (conventional and rapid multiplication techniques) used, by the national cassava program in Uganda was done, against the tissue culture technique. The conventional method required the largest area and starting material. Tissue culture consumed most time, effort and operating capital, overall labour and machinery, compared with the two alternative techniques. Total direct production cost were least for the conventional technique. The tissue culture method had the highest multiplication rate (1:2000) compared to the rapid (1:16) and conventional (1:3) per year. MenosAbstract: Micropropagation (in vitro culture) of some farmer prefered cassava varieties was investigated, inorder to suplement existing multiplication techniques (farme's and rapid multiplication methods). The best medium formulation for initiation and multiplication of the variety SS4 was standard modified Murashige and Skoog's (MS) (1962) medium supplemented with 0.05 mg/l benzyl aminopurine (BAP), 0.01 mg/l naphthyl acetic acid (NAA) and 1 mg/l gibberellic acid (GA). For variety TMS 2 (4) 1425, the same formulation favoured culture initiation, but further multiplication (subculturing) required basic MS medium without growth regulator supplement. Six substrates namely: coffee husks, 100%; top soil, 100%; soil/sawdust mixture, 50:50; and farmyard manure, were tested for plantlet response, for weaning and hardenig. The best growth occured in soil and the worst in coffee husks and dairy manure. The effect of plantlet age at 2,4 and 8 weeks after, was investigated in relation to plant survival. The lowest survival rates occured at two weeks after subculture (SS4, 95% and TMS 2 (4) 1425, 93%). The optimum age for the highest survival was 4 weeks after subculture. Varietal differences significantly (P>0.05) occured at 8 weeks after subculture, with SS4 having 95% better perfomance than TMS 2 (4) 1425, 80%. Successful field establishment occured at MUARIK (100%) and Namulonge (70%). Approximately 7000 plantlets were established in the field within one year. The first generation ... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 02957naa a2200181 a 4500
001 1651845
005 2004-04-14
008 1998 bl uuuu u00u1 u #d
100 1 $aAJONYE, M
245 $aProgress in cassava micropropagation in Uganda.
260 $c1998
520 $aAbstract: Micropropagation (in vitro culture) of some farmer prefered cassava varieties was investigated, inorder to suplement existing multiplication techniques (farme's and rapid multiplication methods). The best medium formulation for initiation and multiplication of the variety SS4 was standard modified Murashige and Skoog's (MS) (1962) medium supplemented with 0.05 mg/l benzyl aminopurine (BAP), 0.01 mg/l naphthyl acetic acid (NAA) and 1 mg/l gibberellic acid (GA). For variety TMS 2 (4) 1425, the same formulation favoured culture initiation, but further multiplication (subculturing) required basic MS medium without growth regulator supplement. Six substrates namely: coffee husks, 100%; top soil, 100%; soil/sawdust mixture, 50:50; and farmyard manure, were tested for plantlet response, for weaning and hardenig. The best growth occured in soil and the worst in coffee husks and dairy manure. The effect of plantlet age at 2,4 and 8 weeks after, was investigated in relation to plant survival. The lowest survival rates occured at two weeks after subculture (SS4, 95% and TMS 2 (4) 1425, 93%). The optimum age for the highest survival was 4 weeks after subculture. Varietal differences significantly (P>0.05) occured at 8 weeks after subculture, with SS4 having 95% better perfomance than TMS 2 (4) 1425, 80%. Successful field establishment occured at MUARIK (100%) and Namulonge (70%). Approximately 7000 plantlets were established in the field within one year. The first generation of plantlets fron MUARIK flowered at 7 months after planting (MAP). one thousand stems were harvested at MAP, from which stakes planted 0.7 ha of land were obtained. Farmers held high opinion of in vitro cassava plantlets. All the selected farmers for the demostration reported 100% survival in preliminary field trials. Initial tecnical and economic comparison of the multiplication techniques (conventional and rapid multiplication techniques) used, by the national cassava program in Uganda was done, against the tissue culture technique. The conventional method required the largest area and starting material. Tissue culture consumed most time, effort and operating capital, overall labour and machinery, compared with the two alternative techniques. Total direct production cost were least for the conventional technique. The tissue culture method had the highest multiplication rate (1:2000) compared to the rapid (1:16) and conventional (1:3) per year.
700 1 $aLWANGA CHARLES
700 1 $aSSEMAKULA, G
700 1 $aOTIM-NAPE, G.W
700 1 $aBAGUMA, Y. K
700 1 $aOBA, J. R.
773 $tRevista Brasileira de Mandioca,Cruz das Almas$gv.17, p.49, nov, 1998. Suplemento.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
11/03/2016 |
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Data da última atualização: |
11/03/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
CASTAGNINO, D. de S.; HüRTER, C. J.; RIVERA, A. R.; LIMA, L. D. de; SILVA, H. G. de O.; BIAGIOLI, B.; RESENDE, K. T. de; TEIXEIRA, I. A. M. de A. |
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Afiliação: |
Douglas de Souza Castagnino, Universidade Estadual Paulista (Unesp) - Jaboticabal, SP, Brasil; Carla Joice Härter, Unesp - Jaboticabal, SP, Brasil; Astrid Rivera Rivera, Unesp - Jaboticabal, SP, Brasil; LISIANE DORNELES DE LIMA, CNPC; Herymá Giovane de Oliveira Silva, Unesp - Jaboticabal, SP, Brasil; Bruno Biagioli; Kleber Tomás de Resende; Izabelle Auxiliadora Molina de Almeida Teixeira. |
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Título: |
Changes in maternal body composition and metabolism of dairy goats during pregnancy. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, v. 44, n. 3, p. 92-102, 2015. |
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DOI: |
http://dx.doi.org/10.1590/S1806-92902015000300003 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The objective of this study was to evaluate the mobilization of nutrients in goats of different gestation types and pregnancy stages. Forty-four Saanen and Oberhasli goats were studied. The goats of each breed and gestation type (single or twin) were slaughtered at different gestational ages (80, 110, and 140 days of pregnancy), forming a completely randomized design in a 2 × 3 × 2 factorial arrangement (two breeds, three gestational ages, and two types of pregnancy). The slaughter procedure involved separating the empty body, mammary glands, uterus with membranes and fetal fluid, and fetus(es). For the females slaughtered at 140 days of pregnancy, blood was collected to analyze metabolites and hormones every 15 days during gestation. The dry matter (DM) intake was lower in goats with twin pregnancies. The relative daily retention rate of the nutrients in the body was positive at 100 days of pregnancy but became negative at 140 days (-0.18±0.25 g DM kg-1 of maternal body d-1) and did not differ with breed or number of fetuses. Fetal growth in twin pregnancies was 66% higher than in single pregnancies. The highest levels of ß-hydroxybutyrate and non-esterified fatty acids were observed beginning at 100 days of gestation. Serum total protein and albumin levels decreased after 125 days of gestation. Serum urea levels were reduced after 80 days of gestation. Plasma 17ß-estradiol levels increased with the advance of pregnancy, and IGF-1 was highest between 60 and 80 days of gestation. The maternal metabolism throughout pregnancy does not vary with the type of pregnancy, and pregnant goats need greater nutritional intake during the final third of the gestational period regardless of the breed or type of pregnancy. MenosAbstract: The objective of this study was to evaluate the mobilization of nutrients in goats of different gestation types and pregnancy stages. Forty-four Saanen and Oberhasli goats were studied. The goats of each breed and gestation type (single or twin) were slaughtered at different gestational ages (80, 110, and 140 days of pregnancy), forming a completely randomized design in a 2 × 3 × 2 factorial arrangement (two breeds, three gestational ages, and two types of pregnancy). The slaughter procedure involved separating the empty body, mammary glands, uterus with membranes and fetal fluid, and fetus(es). For the females slaughtered at 140 days of pregnancy, blood was collected to analyze metabolites and hormones every 15 days during gestation. The dry matter (DM) intake was lower in goats with twin pregnancies. The relative daily retention rate of the nutrients in the body was positive at 100 days of pregnancy but became negative at 140 days (-0.18±0.25 g DM kg-1 of maternal body d-1) and did not differ with breed or number of fetuses. Fetal growth in twin pregnancies was 66% higher than in single pregnancies. The highest levels of ß-hydroxybutyrate and non-esterified fatty acids were observed beginning at 100 days of gestation. Serum total protein and albumin levels decreased after 125 days of gestation. Serum urea levels were reduced after 80 days of gestation. Plasma 17ß-estradiol levels increased with the advance of pregnancy, and IGF-1 was highest between 60 and 80 day... Mostrar Tudo |
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Palavras-Chave: |
Hormone profile; Nutritional profile; Perfil hormonal; Perfil metabólico; Pregnancy outcomes; Type of pregnancy. |
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Thesagro: |
Cabra; Caprino; Ingestão; Nutrição animal; Nutriente; Prenhez. |
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Thesaurus NAL: |
Animal nutrition; Energy metabolism; Goats; Nutrients; Pregnancy. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/141040/1/CNPC-2015-Changes.pdf
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Marc: |
LEADER 02955naa a2200421 a 4500
001 2040623
005 2016-03-11
008 2015 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/S1806-92902015000300003$2DOI
100 1 $aCASTAGNINO, D. de S.
245 $aChanges in maternal body composition and metabolism of dairy goats during pregnancy.$h[electronic resource]
260 $c2015
520 $aAbstract: The objective of this study was to evaluate the mobilization of nutrients in goats of different gestation types and pregnancy stages. Forty-four Saanen and Oberhasli goats were studied. The goats of each breed and gestation type (single or twin) were slaughtered at different gestational ages (80, 110, and 140 days of pregnancy), forming a completely randomized design in a 2 × 3 × 2 factorial arrangement (two breeds, three gestational ages, and two types of pregnancy). The slaughter procedure involved separating the empty body, mammary glands, uterus with membranes and fetal fluid, and fetus(es). For the females slaughtered at 140 days of pregnancy, blood was collected to analyze metabolites and hormones every 15 days during gestation. The dry matter (DM) intake was lower in goats with twin pregnancies. The relative daily retention rate of the nutrients in the body was positive at 100 days of pregnancy but became negative at 140 days (-0.18±0.25 g DM kg-1 of maternal body d-1) and did not differ with breed or number of fetuses. Fetal growth in twin pregnancies was 66% higher than in single pregnancies. The highest levels of ß-hydroxybutyrate and non-esterified fatty acids were observed beginning at 100 days of gestation. Serum total protein and albumin levels decreased after 125 days of gestation. Serum urea levels were reduced after 80 days of gestation. Plasma 17ß-estradiol levels increased with the advance of pregnancy, and IGF-1 was highest between 60 and 80 days of gestation. The maternal metabolism throughout pregnancy does not vary with the type of pregnancy, and pregnant goats need greater nutritional intake during the final third of the gestational period regardless of the breed or type of pregnancy.
650 $aAnimal nutrition
650 $aEnergy metabolism
650 $aGoats
650 $aNutrients
650 $aPregnancy
650 $aCabra
650 $aCaprino
650 $aIngestão
650 $aNutrição animal
650 $aNutriente
650 $aPrenhez
653 $aHormone profile
653 $aNutritional profile
653 $aPerfil hormonal
653 $aPerfil metabólico
653 $aPregnancy outcomes
653 $aType of pregnancy
700 1 $aHüRTER, C. J.
700 1 $aRIVERA, A. R.
700 1 $aLIMA, L. D. de
700 1 $aSILVA, H. G. de O.
700 1 $aBIAGIOLI, B.
700 1 $aRESENDE, K. T. de
700 1 $aTEIXEIRA, I. A. M. de A.
773 $tRevista Brasileira de Zootecnia$gv. 44, n. 3, p. 92-102, 2015.
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Embrapa Caprinos e Ovinos (CNPC) |
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