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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
02/12/2004 |
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Data da última atualização: |
14/12/2023 |
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Autoria: |
RICKE, S. C.; BERGER, L. L.; AAR, P. J. VAN DER; FAHEY JUNIOR, G. C. |
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Título: |
Effects of lasalocid and monensin on nutrient digestion, metabolism and rumen characteristics of sheep. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Journal of Animal Science, v. 58, n. 1, p. 194-202, Jan. 1984. |
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DOI: |
10.2527/jas1984.581194x. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Two experiments were conducted to evaluate metabolism and rumen fermentation responses of lambs fed either monensin or lasalocid (33 mg/kg level) in an alfalfa-corn diet. Experiment 1 was a lamb metabolism trial where rumen samples were taken at the end of each excreta collection period. In Exp. 2, ruminally cannulated sheep were used and cotton thread cellulose and soybean nitrogen (N) disappearance were measured by the in situ dacron bag technique. Rumen turnover rates and volatile fatty acid (VFA) and ammonia pool sizes were determined. In Exp. 1, dry matter and fiber (neutral detergent fiber, NDF; acid detergent fiber, ADF and hemicellulose) digestibilities were not influenced by treatment. Absorbed N was increased (P less than .05) with lasalocid, but not with monensin. No direct or adaptive rumen effects on in situ cellulose or N disappearance were noted in Exp. 2 for either additive. In Exp. 1, at 6 h postfeeding, both additives increased (P less than .05) propionate concentration and lowered (P less than .05) the acetate: propionate (A:P) ratio, while only monensin decreased (P less than .05) rumen ammonia levels. However, no differences in ammonia or VFA concentrations were noted at 2 and 4 h postfeeding. In Exp. 2, where pool size was considered, monensin-fed sheep had lower (P less than .05) total quantities of rumen ammonia at 8 and 12 h postfeeding. Both additives decreased A:P ratios at 6 and 12 h. Lasalocid increased (P less than .05) acetate, propionate and total VFA pool size at 12 h. MenosAbstract: Two experiments were conducted to evaluate metabolism and rumen fermentation responses of lambs fed either monensin or lasalocid (33 mg/kg level) in an alfalfa-corn diet. Experiment 1 was a lamb metabolism trial where rumen samples were taken at the end of each excreta collection period. In Exp. 2, ruminally cannulated sheep were used and cotton thread cellulose and soybean nitrogen (N) disappearance were measured by the in situ dacron bag technique. Rumen turnover rates and volatile fatty acid (VFA) and ammonia pool sizes were determined. In Exp. 1, dry matter and fiber (neutral detergent fiber, NDF; acid detergent fiber, ADF and hemicellulose) digestibilities were not influenced by treatment. Absorbed N was increased (P less than .05) with lasalocid, but not with monensin. No direct or adaptive rumen effects on in situ cellulose or N disappearance were noted in Exp. 2 for either additive. In Exp. 1, at 6 h postfeeding, both additives increased (P less than .05) propionate concentration and lowered (P less than .05) the acetate: propionate (A:P) ratio, while only monensin decreased (P less than .05) rumen ammonia levels. However, no differences in ammonia or VFA concentrations were noted at 2 and 4 h postfeeding. In Exp. 2, where pool size was considered, monensin-fed sheep had lower (P less than .05) total quantities of rumen ammonia at 8 and 12 h postfeeding. Both additives decreased A:P ratios at 6 and 12 h. Lasalocid increased (P less than .05) acetate, propio... Mostrar Tudo |
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Palavras-Chave: |
Amônia ruminal; Balanço de nitrogênio; Drug effects. |
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Thesagro: |
Ácido Graxo Volátil; Aditivo; Cordeiro; Digestibilidade; Ovino. |
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Thesaurus Nal: |
Ammonia; Cellulose; Digestibility; Food additives; Furans; Lambs; Monensin; Ruminant nutrition; Sheep; Volatile fatty acids. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02588naa a2200385 a 4500
001 1524273
005 2023-12-14
008 1984 bl uuuu u00u1 u #d
024 7 $a10.2527/jas1984.581194x.$2DOI
100 1 $aRICKE, S. C.
245 $aEffects of lasalocid and monensin on nutrient digestion, metabolism and rumen characteristics of sheep.
260 $c1984
520 $aAbstract: Two experiments were conducted to evaluate metabolism and rumen fermentation responses of lambs fed either monensin or lasalocid (33 mg/kg level) in an alfalfa-corn diet. Experiment 1 was a lamb metabolism trial where rumen samples were taken at the end of each excreta collection period. In Exp. 2, ruminally cannulated sheep were used and cotton thread cellulose and soybean nitrogen (N) disappearance were measured by the in situ dacron bag technique. Rumen turnover rates and volatile fatty acid (VFA) and ammonia pool sizes were determined. In Exp. 1, dry matter and fiber (neutral detergent fiber, NDF; acid detergent fiber, ADF and hemicellulose) digestibilities were not influenced by treatment. Absorbed N was increased (P less than .05) with lasalocid, but not with monensin. No direct or adaptive rumen effects on in situ cellulose or N disappearance were noted in Exp. 2 for either additive. In Exp. 1, at 6 h postfeeding, both additives increased (P less than .05) propionate concentration and lowered (P less than .05) the acetate: propionate (A:P) ratio, while only monensin decreased (P less than .05) rumen ammonia levels. However, no differences in ammonia or VFA concentrations were noted at 2 and 4 h postfeeding. In Exp. 2, where pool size was considered, monensin-fed sheep had lower (P less than .05) total quantities of rumen ammonia at 8 and 12 h postfeeding. Both additives decreased A:P ratios at 6 and 12 h. Lasalocid increased (P less than .05) acetate, propionate and total VFA pool size at 12 h.
650 $aAmmonia
650 $aCellulose
650 $aDigestibility
650 $aFood additives
650 $aFurans
650 $aLambs
650 $aMonensin
650 $aRuminant nutrition
650 $aSheep
650 $aVolatile fatty acids
650 $aÁcido Graxo Volátil
650 $aAditivo
650 $aCordeiro
650 $aDigestibilidade
650 $aOvino
653 $aAmônia ruminal
653 $aBalanço de nitrogênio
653 $aDrug effects
700 1 $aBERGER, L. L.
700 1 $aAAR, P. J. VAN DER
700 1 $aFAHEY JUNIOR, G. C.
773 $tJournal of Animal Science$gv. 58, n. 1, p. 194-202, Jan. 1984.
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Embrapa Caprinos e Ovinos (CNPC) |
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