What question did this study set out to answer?

Determine the distribution of urinary nitrogen across diverse chemical constituents in cattle, sheep, and goats to better understand subsequent nitrogen reactions in soil.

January 1, 1992Journal of the Science of Food and Agriculture

Nitrogenous constituents in the urine of cattle, sheep and goats

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Authors

ABA. W. Bristow DWDavid WhiteheadLincoln University JCJ. E. CockburnAberystwyth University

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Implication

Comparative biochemical analysis reveals urea-dominated nitrogen partitioning across cattle, sheep, and goat urine, suggesting differing metabolic fates in agricultural soils.

Key Points

Determine the distribution of urinary nitrogen across diverse chemical constituents in cattle, sheep, and goats to better understand subsequent nitrogen reactions in soil.
Analyzed urine samples collected from dairy cows (N=10), sheep (N=5), and goats (N=4).
Quantified total nitrogen alongside individual nitrogenous constituents including urea, allantoin, hippuric acid, creatinine, creatine, uric acid, purines, free amino acids, and ammonia.
Total nitrogen in dairy cow urine ranged from 6.8 to 21.6 g N L⁻¹, comprising an average of 69% urea, 7.3% allantoin, 5.8% hippuric acid, 3.7% creatinine, 2.5% creatine, 1.3% uric acid, 0.5% xanthine plus hypoxanthine, 1.3% free amino acid nitrogen, and 2.8% ammonia.
Total nitrogen in sheep urine ranged from 3.0 to 13.7 g L⁻¹, with an average of 83% urea, 5.3% creatine, 4.3% hippuric acid, 4.3% allantoin, and less than 1% for each remaining constituent.
Goat urine mirrored sheep urine nitrogen distributions, exhibiting a lower creatine-to-creatinine ratio and a slightly higher proportion of amino acid nitrogen (2.0%).

Cite This Study

Bristow et al. (1992) studied this question.

synapsesocial.com/papers/6a9c0acc92fb38ea9dc53713 https://doi.org/10.1002/jsfa.2740590316

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Implication

Comparative biochemical analysis reveals urea-dominated nitrogen partitioning across cattle, sheep, and goat urine, suggesting differing metabolic fates in agricultural soils.

Nitrogenous constituents in the urine of cattle, sheep and goats

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Key Points

Cite This Study

Nitrogenous constituents in the urine of cattle, sheep and goats

Discussion

Member takes

Implication

Key Points

Cite This Study

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