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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
18/04/2023 |
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Data da última atualização: |
18/04/2023 |
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Autoria: |
WANDERLEY, R. D. C. |
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Afiliação: |
RUY DA CARVALHEIRA WANDERLEY, CPPSE. |
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Título: |
Automated total collection and indicator methods for estimating digesta flow in steers fed roughage or concentrate diets. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
Tucson: The University of Arizona, 1982. |
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Páginas: |
108 f. |
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Idioma: |
Inglês |
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Conteúdo: |
Automated total collection (ATC) of digesta from four streers fitted with doudenal re-entrant cannulas was compared wid flow estimations based on Cr203 and acid detergent lignin concentrations of ATC samples. In two successive periods, each was fed about 4 kg daily of an all-roughage or an 80% sorghum grain diet. Digesta samples were automatically taken and pooled every 2 hr, 3- to 6-day collections. Sample aliquots, representing 4% of the digesta measurd in eanch 2 hr were pooled to represent 24-hr digesta flow. Data of 2-hr samples were used to study diunal flow patterns. Doudenal digesta and dry matter flow rates estimated by Cr203 and lignin were grater by ~15% than flow rates measured by ATC. Mean recoveries of Cr3o3 and lignin at the duodenum were 93 and 89%, respectively. Animals fed the roughage diet had about 55% greater digesta flow rates than fed the concentrate diet (42 versus 65 1 daily average by ATC). The appeared to be an interaction between diets and and markers. Apparent ruminal dry matter digestibility caluculated from direst measurements by ATC was 44% for the concentrate diet and 37% for the roughage diet. Rumen digestibility values based on Cr203 and lignin were about 25% lower than the ATC values. Average coefficients of diurnal variation for digesta flow were 29% in the concentrate diet 34% in the roughage diet. Estimations from Cr2o3 and lignin based on 2-hr samples coul either under- or overestimate digesta flow by 31 to 350% of the 24-hr flow based on TAC. Thus special emphasis should be given to the problem of sampling procedures when using indicators and spot-sampling technique to estimate digesta flow. There was evidence of a 24-hr cycle for the whole digesta flow in the grain diet, with a period of low before the onset of the light hours. No consistent flow pattern could be identified in the roughage diet. Lignin concentration patterns in digesta were somewhat similar for both diets; however, Cr2o3 patterns were diferent between diets. Digesta dry matter concentration followed a similar pattern to that of Cr2o3 inthe grain diet and to that of lignin in the roughage diet, suggesting that the flow pattern of solid phase components of digesta may also be differentially affected by the dietary concentrate: roughage ratio. MenosAutomated total collection (ATC) of digesta from four streers fitted with doudenal re-entrant cannulas was compared wid flow estimations based on Cr203 and acid detergent lignin concentrations of ATC samples. In two successive periods, each was fed about 4 kg daily of an all-roughage or an 80% sorghum grain diet. Digesta samples were automatically taken and pooled every 2 hr, 3- to 6-day collections. Sample aliquots, representing 4% of the digesta measurd in eanch 2 hr were pooled to represent 24-hr digesta flow. Data of 2-hr samples were used to study diunal flow patterns. Doudenal digesta and dry matter flow rates estimated by Cr203 and lignin were grater by ~15% than flow rates measured by ATC. Mean recoveries of Cr3o3 and lignin at the duodenum were 93 and 89%, respectively. Animals fed the roughage diet had about 55% greater digesta flow rates than fed the concentrate diet (42 versus 65 1 daily average by ATC). The appeared to be an interaction between diets and and markers. Apparent ruminal dry matter digestibility caluculated from direst measurements by ATC was 44% for the concentrate diet and 37% for the roughage diet. Rumen digestibility values based on Cr203 and lignin were about 25% lower than the ATC values. Average coefficients of diurnal variation for digesta flow were 29% in the concentrate diet 34% in the roughage diet. Estimations from Cr2o3 and lignin based on 2-hr samples coul either under- or overestimate digesta flow by 31 to 350% of the 24-hr flow based... Mostrar Tudo |
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Palavras-Chave: |
Alimento concentrato. |
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Thesagro: |
Digestão; Nutrição Animal. |
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Thesaurus Nal: |
animal nutrition; concentrates; digesta; digestion. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02912nam a2200205 a 4500
001 2153207
005 2023-04-18
008 1982 bl uuuu m 00u1 u #d
100 1 $aWANDERLEY, R. D. C.
245 $aAutomated total collection and indicator methods for estimating digesta flow in steers fed roughage or concentrate diets.$h[electronic resource]
260 $aTucson: The University of Arizona$c1982
300 $a108 f.
520 $aAutomated total collection (ATC) of digesta from four streers fitted with doudenal re-entrant cannulas was compared wid flow estimations based on Cr203 and acid detergent lignin concentrations of ATC samples. In two successive periods, each was fed about 4 kg daily of an all-roughage or an 80% sorghum grain diet. Digesta samples were automatically taken and pooled every 2 hr, 3- to 6-day collections. Sample aliquots, representing 4% of the digesta measurd in eanch 2 hr were pooled to represent 24-hr digesta flow. Data of 2-hr samples were used to study diunal flow patterns. Doudenal digesta and dry matter flow rates estimated by Cr203 and lignin were grater by ~15% than flow rates measured by ATC. Mean recoveries of Cr3o3 and lignin at the duodenum were 93 and 89%, respectively. Animals fed the roughage diet had about 55% greater digesta flow rates than fed the concentrate diet (42 versus 65 1 daily average by ATC). The appeared to be an interaction between diets and and markers. Apparent ruminal dry matter digestibility caluculated from direst measurements by ATC was 44% for the concentrate diet and 37% for the roughage diet. Rumen digestibility values based on Cr203 and lignin were about 25% lower than the ATC values. Average coefficients of diurnal variation for digesta flow were 29% in the concentrate diet 34% in the roughage diet. Estimations from Cr2o3 and lignin based on 2-hr samples coul either under- or overestimate digesta flow by 31 to 350% of the 24-hr flow based on TAC. Thus special emphasis should be given to the problem of sampling procedures when using indicators and spot-sampling technique to estimate digesta flow. There was evidence of a 24-hr cycle for the whole digesta flow in the grain diet, with a period of low before the onset of the light hours. No consistent flow pattern could be identified in the roughage diet. Lignin concentration patterns in digesta were somewhat similar for both diets; however, Cr2o3 patterns were diferent between diets. Digesta dry matter concentration followed a similar pattern to that of Cr2o3 inthe grain diet and to that of lignin in the roughage diet, suggesting that the flow pattern of solid phase components of digesta may also be differentially affected by the dietary concentrate: roughage ratio.
650 $aanimal nutrition
650 $aconcentrates
650 $adigesta
650 $adigestion
650 $aDigestão
650 $aNutrição Animal
653 $aAlimento concentrato
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
08/03/2021 |
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Data da última atualização: |
26/04/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
LIMA, C. S.; PEREIRA, M. H.; ALEMÁN GAINZA, Y.; HOSTE, H.; REGASINI, L. O.; CHAGAS, A. C. de S. |
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Afiliação: |
CAROLINE SPRENGEL LIMA, UNESP; MATHEUS HENRIQUE PEREIRA, UNESP; YOUSMEL ALEMÁN GAINZA, CNPq; HERVÉ HOSTE, INRA; LUÍS OCTAVIO REGASINI, UNESP; ANA CAROLINA DE SOUZA CHAGAS, CPPSE. |
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Título: |
Anthelmintic effect of Pterogyne nitens (Fabaceae) on eggs and larvae of Haemonchus contortus: analyses of structure-activity relationships based on phenolic compounds. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Industrial Crops and Products, v.164, june 2021, 113348. |
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Páginas: |
8 p. |
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Idioma: |
Inglês |
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Conteúdo: |
Due to high prevalence and large pathogenicity, Haemonchus contortus is the main gastrointestinal nematode in tropical and subtropical regions. This species is responsible for severe economic losses to sheep and goat breeders in Brazil. The control of this parasite is currently compromised, mainly, due to anthelmintic resistance. In the search for natural anthelmintic alternatives, Pterogyne nitens, a native Brazilian tree with potential ethnopharmacological activity, has been identified. The aim of this study was to evaluate the anthelmintic activity of ethanolic extracts and phenolic compounds from P. nitens, as well as two commercial flavonoids (chrysin and morin), to derive the chemical structure and anthelmintic activity. The ovicidal and larvicidal activity of ethanolic extracts from leaves (EEL) and fruits (EEFR), as well as natural compounds from P. nitens on H. contortus were evaluated through egg hatch assay (EHA) and larval development assay (LDA). The results showed that all extracts, especially the phenolic compounds were active in the EHA and LDA. The egg hatch inhibitory effects of EEL (EC50 = 316 μg/mL) were more potent than EEFR (EC50 = 512 μg/mL). However, larval development inhibitory effects of EEL (EC50 = 47 μg/mL) and EEFR (EC50 = 35 μg/mL) were similar. Among the compounds, the flavones (sorbifolin, pedalitin, and chrysin) did not have inhibitory effects on egg hatching but presented some activity against larval development of H. contortus. In contrast, the flavonols (quercetin, rutin, and morin) showed high activity in the EHA but were inactive in the LDA. The addition of at hydroxyl group and rutinose group to the flavonoid structure increased the ovicidal and larvicidal activity, respectively. The phenolic acids showed potent anthelmintic activity: caffeic acid, ferulic acid, and gallic acid had the highest anthelmintic effects, presenting EC50 values of 1.48, 0.56, and 4.93 μg/mL in the EHA; and 31, 22, and 33 μg/mL in the LDA, respectively. These results suggest that P. nitens might be a source of effective alternative compounds to control H. contortus. MenosDue to high prevalence and large pathogenicity, Haemonchus contortus is the main gastrointestinal nematode in tropical and subtropical regions. This species is responsible for severe economic losses to sheep and goat breeders in Brazil. The control of this parasite is currently compromised, mainly, due to anthelmintic resistance. In the search for natural anthelmintic alternatives, Pterogyne nitens, a native Brazilian tree with potential ethnopharmacological activity, has been identified. The aim of this study was to evaluate the anthelmintic activity of ethanolic extracts and phenolic compounds from P. nitens, as well as two commercial flavonoids (chrysin and morin), to derive the chemical structure and anthelmintic activity. The ovicidal and larvicidal activity of ethanolic extracts from leaves (EEL) and fruits (EEFR), as well as natural compounds from P. nitens on H. contortus were evaluated through egg hatch assay (EHA) and larval development assay (LDA). The results showed that all extracts, especially the phenolic compounds were active in the EHA and LDA. The egg hatch inhibitory effects of EEL (EC50 = 316 μg/mL) were more potent than EEFR (EC50 = 512 μg/mL). However, larval development inhibitory effects of EEL (EC50 = 47 μg/mL) and EEFR (EC50 = 35 μg/mL) were similar. Among the compounds, the flavones (sorbifolin, pedalitin, and chrysin) did not have inhibitory effects on egg hatching but presented some activity against larval development of H. co... Mostrar Tudo |
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Palavras-Chave: |
Egg hatch assay (EHA); Ethanolic extracts; In vitro; Larval development assay (LDA). |
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Thesaurus NAL: |
Anthelmintics; Phenolic compounds. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/221715/1/AnthelminticEffectPterogyne.pdf
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Marc: |
LEADER 03007naa a2200265 a 4500
001 2130547
005 2021-04-26
008 2021 bl uuuu u00u1 u #d
100 1 $aLIMA, C. S.
245 $aAnthelmintic effect of Pterogyne nitens (Fabaceae) on eggs and larvae of Haemonchus contortus$banalyses of structure-activity relationships based on phenolic compounds.$h[electronic resource]
260 $c2021
300 $a8 p.
520 $aDue to high prevalence and large pathogenicity, Haemonchus contortus is the main gastrointestinal nematode in tropical and subtropical regions. This species is responsible for severe economic losses to sheep and goat breeders in Brazil. The control of this parasite is currently compromised, mainly, due to anthelmintic resistance. In the search for natural anthelmintic alternatives, Pterogyne nitens, a native Brazilian tree with potential ethnopharmacological activity, has been identified. The aim of this study was to evaluate the anthelmintic activity of ethanolic extracts and phenolic compounds from P. nitens, as well as two commercial flavonoids (chrysin and morin), to derive the chemical structure and anthelmintic activity. The ovicidal and larvicidal activity of ethanolic extracts from leaves (EEL) and fruits (EEFR), as well as natural compounds from P. nitens on H. contortus were evaluated through egg hatch assay (EHA) and larval development assay (LDA). The results showed that all extracts, especially the phenolic compounds were active in the EHA and LDA. The egg hatch inhibitory effects of EEL (EC50 = 316 μg/mL) were more potent than EEFR (EC50 = 512 μg/mL). However, larval development inhibitory effects of EEL (EC50 = 47 μg/mL) and EEFR (EC50 = 35 μg/mL) were similar. Among the compounds, the flavones (sorbifolin, pedalitin, and chrysin) did not have inhibitory effects on egg hatching but presented some activity against larval development of H. contortus. In contrast, the flavonols (quercetin, rutin, and morin) showed high activity in the EHA but were inactive in the LDA. The addition of at hydroxyl group and rutinose group to the flavonoid structure increased the ovicidal and larvicidal activity, respectively. The phenolic acids showed potent anthelmintic activity: caffeic acid, ferulic acid, and gallic acid had the highest anthelmintic effects, presenting EC50 values of 1.48, 0.56, and 4.93 μg/mL in the EHA; and 31, 22, and 33 μg/mL in the LDA, respectively. These results suggest that P. nitens might be a source of effective alternative compounds to control H. contortus.
650 $aAnthelmintics
650 $aPhenolic compounds
653 $aEgg hatch assay (EHA)
653 $aEthanolic extracts
653 $aIn vitro
653 $aLarval development assay (LDA)
700 1 $aPEREIRA, M. H.
700 1 $aALEMÁN GAINZA, Y.
700 1 $aHOSTE, H.
700 1 $aREGASINI, L. O.
700 1 $aCHAGAS, A. C. de S.
773 $tIndustrial Crops and Products$gv.164, june 2021, 113348.
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