NDLI: Intake, digestibility and rumen dynamics of neutral detergent fibre in cattle fed low-quality tropical forage and supplemented with nitrogen and/or starch

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Intake, digestibility and rumen dynamics of neutral detergent fibre in cattle fed low-quality tropical forage and supplemented with nitrogen and/or starch

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Intake, digestibility and rumen dynamics of neutral detergent fibre in cattle fed low-quality tropical forage and supplemented with nitrogen and/or starch

Content Provider	Springer Nature Link
Author	Souza, Marjorrie A. Detmann, Edenio Pauli, Mário F. Sampaio, Cláudia B. Lazzarini, Ísis Valadares Filho, Sebastião C.
Copyright Year	2010
Abstract	The objective of this work was to evaluate the effects of nitrogenous compounds and/or starch supplementation on the intake, digestibility and rumen dynamics of neutral detergent fibre (NDF) in cattle fed low-quality tropical forage. Four crossbred heifers (Holstein × Zebu) with a body weight 231.9 ± 15.5 kg and fitted with ruminal cannulae were used. The forage fed to the animals consisted of low-quality signal grass (Brachiaria decumbens Stapf.) hay, with an average crude protein (CP) level of 51.6 g/kg, on a dry matter (DM) basis. Four treatments were evaluated: control, without supplementation; supplementation with nitrogenous compounds (CP of the roughage was raised to 100 g/kg), on a DM basis; supplementation with starch at a ratio of 200 g/kg DM of roughage; and supplementation with nitrogenous compounds and starch as described above. A mixture of urea, ammonium sulphate and albumin was used as a source of nitrogenous compounds at a ratio of 4.5:0.5:1.0. The experiment was carried out according to a 4 × 4 Latin square design in a 2 × 2 factorial arrangement. There was a positive effect of the nitrogenous compound supplementation on the DM and NDF intake (P < 0.01). In contrast, starch supplementation decreased forage intake (P < 0.10). Nitrogen supplementation increased the digestibility coefficient of DM and NDF (P < 0.05). Supplementation with nitrogen and starch together increased the microbial assimilation of nitrogenous compounds in the rumen (P < 0.05). We observed that nitrogen supplementation increased the estimated weighted degradation rate of NDF by 14.8%, whilst starch supplementation decreased this rate by 32.5%.
Starting Page	1299
Ending Page	1310
Page Count	12
File Format	PDF
ISSN	00494747
Journal	Tropical Animal Health and Production
Volume Number	42
Issue Number	6
e-ISSN	15737438
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-04-13
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Non-fibrous carbohydrates Rumen degradation Rumen fill Signal grass Supplementation Urea Veterinary Medicine Zoology
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Food Animals

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Rumen dynamics of neutral detergent fiber in cattle fed low-quality tropical forage and supplemented with nitrogenous compounds

Intake and digestibility in cattle fed low-quality tropical forage and supplemented with nitrogenous compounds

Intake, digestibility and rumen dynamics of neutral detergent fibre in cattle fed low-quality tropical forage and supplemented with nitrogen and/or starch.

Intake and digestibility in cattle fed low-quality tropical forage and supplemented with nitrogenous compounds

Intake, digestibility and nitrogen utilization in cattle fed tropical forage and supplemented with protein in the rumen, abomasum, or both

Intake, digestibility and nitrogen utilization in cattle fed tropical forage and supplemented with protein in the rumen, abomasum, or both

Intake and digestibility in cattle under grazing supplemented with nitrogenous compounds during dry season

In vitro degradation of neutral detergent fiber of high-quality tropical forage according to supplementation with different nitrogenous compounds

In vitro degradation of neutral detergent fiber from high-quality tropical forage according to supplementation with protein and (or) carbohydrates

Intake, digestibility and rumen dynamics of neutral detergent fibre in cattle fed low-quality tropical forage and supplemented with nitrogen and/or starch

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