Influence of dietary nitrogen sources on amino acids in plasma and abomasal ingesta from sheep

Poley, Gerald E.

doi:10.31274/rtd-180814-1945

Cited by 1 publication

(1 citation statement)

References 52 publications

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“…Lambs fed corn supplemented with urea tended to have higher levels of these amino acids, except tyrosine, than lambs fed the other two treatments. Poley and Trenkle (1963) observed similar amino acid patterns when either urea or soybean meal supplied in excess of 90% of the dietary N for sheep. Glutamate and ornithine concentrations were higher (P<.10) in plasma of lambs fed both urea diets.…”

Section: Resultsmentioning

confidence: 72%

Utilization by Sheep of Whole Shelled Corn Impregnated with Urea, Calcium, Potassium and Sulfur

Koeln

Webb

Fontenot

1985

Journal of Animal Science

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Twenty-eight growing wether lambs (33.9 kg), adapted to urea for 40 d, were used in a metabolism study to determine if urea impregnation of corn could improve urea utilization. The following diets were compared: 1) whole shelled corn alone, 2) whole shelled corn impregnated with urea, calcium (Ca) as CaCl2, potassium (K) as KC2H3O2, and sulfur (S) as Na2S2O3 X 5H2O, 3) whole shelled corn fed with a dry supplement containing urea, Ca, K and S and 4) whole shelled corn fed with a dry supplement containing soybean meal, Ca and K. Additions were made to provide diets containing 12% crude protein, .37% Ca and .50% K. A 10:1 N (from urea) to S ratio, dry basis was used in urea-containing diets. Corn (90% dry matter) in diet 2 was impregnated by spraying 1.1 liters of an aqueous solution containing the above salts per 10 kg of corn dry matter. After mixing for 10 min in a horizontal mixer, the corn was dried in a laboratory grain drying bin with ambient laboratory air for 48 h. Lambs were fed 350 g of the respective diets plus 35 g orchardgrass hay twice daily during a 20-d metabolism trial. On the last day of the trial, ruminal fluid samples were collected at 0, 1, 2, 3, 4, 5 and 6 h postfeeding and jugular blood was obtained at 0 and 6 h postfeeding. Nitrogen-supplemented diets resulted in increased (P less than .01) absorption and retention of N. Digestibility of dry matter, organic matter and NFE tended to be greater in lambs fed impregnated corn than in lambs fed the other diets.(ABSTRACT TRUNCATED AT 250 WORDS)

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Section: Resultsmentioning

confidence: 72%