Rumen Parameters and Urea Kinetics in Goats and Sheep

Darlis,; Abdullah, Nik Rosli; Halim, R. A.; Jalaludin, S.; Ho, Yin Wan

doi:10.5713/ajas.2000.922

Cited by 5 publications

(1 citation statement)

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“…Additional studies conducted over short periods were included to evaluate differences between goats and sheep in DM intake (Wahed and Owen, 1986; Huston et al., 1988; Hadjipanayiotou and Hadjidemetriou, 1990; Hadjipanayiotou, 1995), rumen ammonia (NH 3 ) production (Cabrera et al., 1983; Darlis et al., 2000b; Yáñez‐Ruiz et al., 2004a) and rumen pH (Darlis et al., 2000b; Yáñez‐Ruiz et al., 2004a,b).…”

Section: Methodsmentioning

confidence: 99%

Quantifying differences in total tract nutrient digestibilities between goats and sheep

Sales

Jančík

Homolka

2011

Animal Physiology Nutrition

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Conclusions from narrative qualitative reviews on differences in total tract digestibilities between goats and sheep did not account for variability among studies. Therefore meta-analytic techniques were used to describe the magnitude of these differences with numerical values. A unitless effect size (Hedges' g) was applied within studies to measure differences in digestibilities of dry matter (DM; 104 comparisons), organic matter (OM; 93 comparisons), crude protein (CP; 85 comparisons), neutral detergent fibre (NDF; 74 comparisons), acid detergent fibre (ADF; 59 comparisons), cellulose (24 comparisons), hemicellulose (18 comparisons) and gross energy (GE; 29 comparisons). The absence and inability to describe independent factors which contributed to variation among studies necessitated the use of frequentist random effects and hierarchical Bayesian models in the calculation of summary statistics across studies. Digestibilities of DM, OM, CP, NDF, ADF and hemicellulose were higher (p < 0.05) in goats than sheep when all-forage diets were fed. When concentrates were included in the diets, there were no such differences. Differences between goats and sheep in DM intake were found to be non-significant. Differences in nutrient digestibilities of forages as sole feed implies that species-specific values have to be used in feed formulation and feeding strategies. However, caution is needed when extrapolating results from stall-feeding, which is how digestibility data are usually measured, to grazing conditions.

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Section: Methodsmentioning

confidence: 99%

Quantifying differences in total tract nutrient digestibilities between goats and sheep

Sales

Jančík

Homolka

2011

Animal Physiology Nutrition

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Effects of non-protein nitrogen on buffel grass fiber and ruminal bacterial composition in sheep

et al. 2023

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Influence of ad libitum feeding of urea-treated wheat straw with or without corn steep liquor on intake, in situ digestion kinetics, nitrogen metabolism, and nutrient digestion in Nili-Ravi buffalo bulls

Mahr-un-Nisa¹,

Sarwar²,

Khan³

2004

Aust. J. Agric. Res.

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Influence of different levels of corn steep liquor (CSL) on chemical composition of urea-treated wheat straw (UTWS), feed intake, ruminal characteristics, digestion kinetics, nitrogen (N) metabolism, and nutrient digestibility by ruminally cannulated buffalo bulls was studied using 4 × 4 Latin square design. Wheat straw was treated with 5% urea and ensiled with 0, 3, 6, and 9% CSL on a dry matter (DM) basis and was ensiled in laboratory silos for 5, 10, and 15 days. Neutral detergent fibre (NDF) contents of UTWS ensiled with 0, 3, 6, and 9% CSL were 74.01, 76.16, 77.34, and 78.93%, respectively. Acid detergent fibre (ADF), cellulose, and lignin were similar across treatments. The increase in NDF content was due to increased neutral detergent insoluble nitrogen (NDIN), as when NDF was calculated on crude protein (CP)-free basis (NDF – NDIN × 6.25), its concentration was same for UTWS ensiled with or without CSL. Four diets were formulated to contain 20% concentrate and 80% UTWS ensiled with or without CSL. Dry matter, digestible DM, organic matter (OM), CP, ADF, and NDF intakes were higher in bulls fed UTWS ensiled with CSL. Significant increases in both DM disappearance and rate of disappearance and a reduction in lag time of UTWS ensiled with CSL was noticed. There were significant differences in ruminal ammonia concentrations between diets containing UTWS ensiled with or without CSL at 3, 6, and 12 h postprandial. Higher digestibilities for DM, OM, CP, ADF, and NDF were noted with UTWS ensiled with CSL. Nitrogen balance was positive for all animals; however, the animals fed UTWS ensiled with CSL retained higher amount of N. These results indicated that CSL was very effective in enhancing the utilisation of ammoniated straw for buffaloes by minimising the nutrient loss at ruminal and cellular levels.

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Rumen Parameters and Urea Kinetics in Goats and Sheep

Cited by 5 publications

References 0 publications

Quantifying differences in total tract nutrient digestibilities between goats and sheep

Quantifying differences in total tract nutrient digestibilities between goats and sheep

Effects of non-protein nitrogen on buffel grass fiber and ruminal bacterial composition in sheep

Influence of ad libitum feeding of urea-treated wheat straw with or without corn steep liquor on intake, in situ digestion kinetics, nitrogen metabolism, and nutrient digestion in Nili-Ravi buffalo bulls

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