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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
18/04/2017 |
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Data da última atualização: |
18/04/2017 |
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Autoria: |
LINDBERG, J. E. |
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Título: |
Retention times of small feed particles and of water in the gut of dairy goats fed at different levels of intake. |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
Journal of Animal Physiology and Animal Nutrition, v. 59, n. 4, p. 173-181, Mai. 1988. |
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DOI: |
10.1111/j.1439-0396.1988.tb00062.x |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The effect of feed intake on the mean retention time (MRT), in the entire gastrointestinal tract, and the rumen retention time (RRT) of water (Li-CoEDTA) and of small feed particles (Cr-labelled milled oat hulls) was studied in dairy goats. A total of six goats of the Swedish Landrace breed were used with a mean live weight of 48 kg. The goats were fed a diet composed of 400 g dry matter (DM) .cntdot. kg-1 DM of chopped grass hay and 600 g DM .cntdot. kg-1 DM of a concentrate mixture. They were fed three times a day. Feed intake was ad lib. in collection periods I and II, while in collection periods III and IV feed intake was reduced to a lower level. The experiment started in the beginning of lactation (week 6) and the subsequent collections were made in lactation weeks 11, 20 and 22 respectively. A pulse dose of Cr-labelled oat hulls (30 g) and Li-CoEDTA (3.0 g), suspended in 250 ml of water, was given orally to each animal. Faeces were collected every 4th or every 8th h from 12 h up to 104 h after dosage. MRT and RRT were calculated from the decline in marker concentration in the faeces. The MRT and RRT of water and of small feed particles were all linearly (P < 0.001) related to feed intake (g DM .cntdot. kg-1 LW). The rumen outflow rate of small feed particles (Cr) was linearly (P < 0.001) related to the rumen outflow rate of water (Co).
[Retentionszeit von Wasser und kleinen Futterpartikeln im Darm von Milchziegen bei unterschiedlich hoher Futteraufnahme].
Zusammenfassung: An Milchziegen wurde der Einfluß auf die mittlere Retentionszeit (MRT), die gesamte Retentionszeit und im Pansen (RRT) für Wasser (Li-CoEDTA) und kleine Futterpartikel (Cr-markierte Haferspelzen) bestimmt. Zur Verfügung standen 6 Ziegen der Schwedischen Landrasse mit einem mittleren Körpergewicht von 48 kg. Die Ziegen erhielten ein Futter bestehend aus 400 g (TS) Grasheu und 600 g (TS) Konzentrat dreimal täglich. Die Futteraufnahme war in den Sammelperioden I und II ad libitum und in den Sammelperioden III und IV reduziert. Der Versuchsbeginn lag in der 6. Laktationswoche, die nächsten Sammelperioden erfolgten in der 11., 20. und 22. Laktationswoche. Vor Beginn des Sammeins erhielten die Tiere eine einmalige Gabe von 30 g Cr-markierten Haferspelzen und 3 g Li-CoEDTA in 250 ml Wasser. Der Kot wurde alle 4 h oder 8 h von 12 h bis 104 h nach der Markerverabreichung gesammelt. Die MRT und RRT wurde aus der Markerkonzentration berechnet. MRT und RRT von Wasser und kleinen Futterpartikeln zeigte eine lineare Abhängigkeit (P < 0,001) von der Futteraufnahme (g TS.kg?1 KG), die Flußrate kleiner Futterpartikel aus dem Pansen (Cr) eine lineare Abhängigkeit (P < 0,001) vom Wasserabfluß (Co) aus dem Pansen. MenosAbstract: The effect of feed intake on the mean retention time (MRT), in the entire gastrointestinal tract, and the rumen retention time (RRT) of water (Li-CoEDTA) and of small feed particles (Cr-labelled milled oat hulls) was studied in dairy goats. A total of six goats of the Swedish Landrace breed were used with a mean live weight of 48 kg. The goats were fed a diet composed of 400 g dry matter (DM) .cntdot. kg-1 DM of chopped grass hay and 600 g DM .cntdot. kg-1 DM of a concentrate mixture. They were fed three times a day. Feed intake was ad lib. in collection periods I and II, while in collection periods III and IV feed intake was reduced to a lower level. The experiment started in the beginning of lactation (week 6) and the subsequent collections were made in lactation weeks 11, 20 and 22 respectively. A pulse dose of Cr-labelled oat hulls (30 g) and Li-CoEDTA (3.0 g), suspended in 250 ml of water, was given orally to each animal. Faeces were collected every 4th or every 8th h from 12 h up to 104 h after dosage. MRT and RRT were calculated from the decline in marker concentration in the faeces. The MRT and RRT of water and of small feed particles were all linearly (P < 0.001) related to feed intake (g DM .cntdot. kg-1 LW). The rumen outflow rate of small feed particles (Cr) was linearly (P < 0.001) related to the rumen outflow rate of water (Co).
[Retentionszeit von Wasser und kleinen Futterpartikeln im Darm von Milchziegen bei unterschiedlich hoher Futteraufnahme].
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Thesaurus Nal: |
Animal feeding; Animal nutrition; Digestion; Goats. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 03340naa a2200181 a 4500
001 2068662
005 2017-04-18
008 1988 bl uuuu u00u1 u #d
024 7 $a10.1111/j.1439-0396.1988.tb00062.x$2DOI
100 1 $aLINDBERG, J. E.
245 $aRetention times of small feed particles and of water in the gut of dairy goats fed at different levels of intake.
260 $c1988
520 $aAbstract: The effect of feed intake on the mean retention time (MRT), in the entire gastrointestinal tract, and the rumen retention time (RRT) of water (Li-CoEDTA) and of small feed particles (Cr-labelled milled oat hulls) was studied in dairy goats. A total of six goats of the Swedish Landrace breed were used with a mean live weight of 48 kg. The goats were fed a diet composed of 400 g dry matter (DM) .cntdot. kg-1 DM of chopped grass hay and 600 g DM .cntdot. kg-1 DM of a concentrate mixture. They were fed three times a day. Feed intake was ad lib. in collection periods I and II, while in collection periods III and IV feed intake was reduced to a lower level. The experiment started in the beginning of lactation (week 6) and the subsequent collections were made in lactation weeks 11, 20 and 22 respectively. A pulse dose of Cr-labelled oat hulls (30 g) and Li-CoEDTA (3.0 g), suspended in 250 ml of water, was given orally to each animal. Faeces were collected every 4th or every 8th h from 12 h up to 104 h after dosage. MRT and RRT were calculated from the decline in marker concentration in the faeces. The MRT and RRT of water and of small feed particles were all linearly (P < 0.001) related to feed intake (g DM .cntdot. kg-1 LW). The rumen outflow rate of small feed particles (Cr) was linearly (P < 0.001) related to the rumen outflow rate of water (Co). [Retentionszeit von Wasser und kleinen Futterpartikeln im Darm von Milchziegen bei unterschiedlich hoher Futteraufnahme]. Zusammenfassung: An Milchziegen wurde der Einfluß auf die mittlere Retentionszeit (MRT), die gesamte Retentionszeit und im Pansen (RRT) für Wasser (Li-CoEDTA) und kleine Futterpartikel (Cr-markierte Haferspelzen) bestimmt. Zur Verfügung standen 6 Ziegen der Schwedischen Landrasse mit einem mittleren Körpergewicht von 48 kg. Die Ziegen erhielten ein Futter bestehend aus 400 g (TS) Grasheu und 600 g (TS) Konzentrat dreimal täglich. Die Futteraufnahme war in den Sammelperioden I und II ad libitum und in den Sammelperioden III und IV reduziert. Der Versuchsbeginn lag in der 6. Laktationswoche, die nächsten Sammelperioden erfolgten in der 11., 20. und 22. Laktationswoche. Vor Beginn des Sammeins erhielten die Tiere eine einmalige Gabe von 30 g Cr-markierten Haferspelzen und 3 g Li-CoEDTA in 250 ml Wasser. Der Kot wurde alle 4 h oder 8 h von 12 h bis 104 h nach der Markerverabreichung gesammelt. Die MRT und RRT wurde aus der Markerkonzentration berechnet. MRT und RRT von Wasser und kleinen Futterpartikeln zeigte eine lineare Abhängigkeit (P < 0,001) von der Futteraufnahme (g TS.kg?1 KG), die Flußrate kleiner Futterpartikel aus dem Pansen (Cr) eine lineare Abhängigkeit (P < 0,001) vom Wasserabfluß (Co) aus dem Pansen.
650 $aAnimal feeding
650 $aAnimal nutrition
650 $aDigestion
650 $aGoats
773 $tJournal of Animal Physiology and Animal Nutrition$gv. 59, n. 4, p. 173-181, Mai. 1988.
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