Amino‐acid composition of lucerne and of lucerne and grass protein preparations

Wilson, Robert F.; Tilley, J. M. A.

doi:10.1002/jsfa.2740160401

Cited by 50 publications

(21 citation statements)

References 25 publications

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“…Also the amino acid composition of LLM used in this study was in good agreement with earlier published values for lucerne leaves (Wilson & Tilley, 1965;Gerloff et al, 1965;Malmlof et al, 1990b). The digestibility of dry matter, organic matter, CP and fat all decreased significantly with increasing inclusion of LLM in the diet.…”

Section: Discussionsupporting

confidence: 82%

“…Thc high content of CP and rcasonable level of essential amino acids (Wilson & Tilley, 1965;Gcrloff ct al., 1965) make this crop a n interesting alternative to conventional protein feeds in cereal-based diets for pigs. The high content of fibre (Smith, 1964;Nordkvist & Aman, 1986) of whole lucerne is, however, a limiting factor for full exploitation of lucerne as a source of CP owing to impaired utilization of the dietary energy by pigs (Kass et al, 1980;Calvert et al, 1985;Just, 1982;Low, 1993).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Nutritive Value of Lucerne Leaf Meal for Pigs Based on Digestibility and Nitrogen Utilization

Lindberg

Cortova

Thomke

1995

Acta Agriculturae Scandinavica, Section A - Animal Science

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Section: Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

The Nutritive Value of Lucerne Leaf Meal for Pigs Based on Digestibility and Nitrogen Utilization

Lindberg

Cortova

Thomke

1995

Acta Agriculturae Scandinavica, Section A - Animal Science

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“…Other differences between the grasses such as potentially greater enzyme content within CO, however, cannot be ruled out. Amino acid concentrations and compositions are similar to those reported in the literature based on the level of CP for grasses and legumes (Wilson and Tilley, 1965;Lee et al, 2002;HalmemiesBeauchet-Filleau et al, 2014).…”

Section: Silage Compositionsupporting

confidence: 86%

The effect of high polyphenol oxidase grass silage on metabolism of polyunsaturated fatty acids and nitrogen across the rumen of beef steers1

Lee

Theobald

Gordon

et al. 2014

Journal of Animal Science

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Polyphenol oxidase (PPO) activity in red clover (Trifolium pratense) has been reported to reduce both proteolysis and lipolysis, resulting in greater N use efficiency and protection of PUFA across the rumen. Although high levels of PPO have been reported in grasses such as cocksfoot (orchard grass; Dactylis glomerata), no in vivo research has determined whether grass PPO elicits the same response as red clover PPO. To test the hypothesis that silage ensiled from grass with high levels of PPO protects N and PUFA across the rumen, 6 steers with ruminal and duodenal cannulas were offered cocksfoot silage (CO; high-PPO grass), perennial ryegrass silage (PR; Lolium perenne; low-PPO grass), or red clover silage (RC; high-PPO control) at 16 g DM/ kg BW daily with the experiment consisting of two 3 × 3 Latin squares with 21-d periods, consisting of 12 d of diet adaptation, 6 d of duodenal marker infusion, 2 d of duodenal sampling, and 1 d of ruminal sampling. All silages were well preserved, with DM of 34.4, 55.3, and 45.4% for CO, PR, and RC. Activity of PPO in silages was low due to deactivation but was greater in CO than either PR or RC (0.15 vs. 0.05 and 0.08 μkatal/g DM).Protein-bound phenol (mg/g DM) as a measure of the degree of oxidation and an indication of PPO protection was greatest for RC (15.9) but comparable for PR (10.1) and CO (12.2). Biohydrogenation of C18 PUFA was significantly lower on RC compared to the 2 grass silages with CO greater than PR. Despite lower levels of total fatty acid intake and subsequent duodenal flow, CO resulted in greater levels of phytanic acid and total branched and odd chain fatty acids in duodenal digesta than RC or PR. Ruminal ammonia concentration was greatest for RC, with no difference between the grasses. Duodenal flow of microbial N and efficiency of microbial protein synthesis were lowest for CO and comparable for RC and PR. The CO (high-grass PPO) did not result in elevated levels of C18 PUFA escaping the rumen or improve efficiency of total N transfer through the rumen compared to PR. The RC resulted in a greater flow of N and nonmicrobial N to the duodenum than the 2 grasses with PR greater than CO.

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“…The values for the relative proportions of the amino acids found in the six forage diets were similar to those previously obtained by Chibnall et al (1963) and Wilson & Tilley (1965). Significant differences were found in the proportions of 11 individual ammo acids, but the overall betweendiet differences were small.…”

Section: The Total Flow and The Relative Proportions Of The Amino Acisupporting

confidence: 74%

The influence of diet upon the quantity and types of amino acids entering and leaving the small intestine of sheep

et al. 1973

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Wether sheep were fed on six forage diets, namely, (1) barn-dried low-N hay, (2) barndried low-N hay plus urea infused intraruminally at 12-6 g/24 h, (3) dried sainfoin, (4) dried lucerne, (5) fresh red clover and (6) dried and pelleted red clover. The proportions of amino acids in the diet and in samples of digesta from the duodenum and ileum were determined.The relative proportions of individual amino acids in the duodenal digesta showed little variation despite the differences in intake and the variation in the proportions of amino acids in the feeds. Only the proportions of methionine, lysine, 2:6 diaminopimelic acid (DAPA) and aminoisobutyric acid (AIB) showed significant (P < O'Ol) variation with respect to diet. In the ileal digesta the proportions of methionine, leucine, tyrosine, phenylalanine, glutamic acid, proline, glycine, alanine, AIB and DAPA showed significant variation by diet.With all diets except lucerne the quantity (g/day) of total amino acids presented at the duodenum was higher than the quantity ingested. There was no correlation between the quantity of total amino acids presented at the duodenum and the quantity disappearing within the small intestine.The duodenal digesta contained a significantly higher (P < 0-001) proportion of essential amino acids than did the ileal digesta. This difference was most marked with the diets which supplied a low amino acid intake.With all diets there was little apparent absorption of DAPA in the small intestine.

show abstract

Amino‐acid composition of lucerne and of lucerne and grass protein preparations

Cited by 50 publications

References 25 publications

The Nutritive Value of Lucerne Leaf Meal for Pigs Based on Digestibility and Nitrogen Utilization

The Nutritive Value of Lucerne Leaf Meal for Pigs Based on Digestibility and Nitrogen Utilization

The effect of high polyphenol oxidase grass silage on metabolism of polyunsaturated fatty acids and nitrogen across the rumen of beef steers1

The influence of diet upon the quantity and types of amino acids entering and leaving the small intestine of sheep

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