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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
11/12/2023 |
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Autoria: |
DIEF, H. I.; EL-SHASZLEY, Y.Y.; ABOU AKKADA, A. R. |
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Título: |
The biological evaluation of urea, casein and gluten in the diets of sheep. |
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Ano de publicação: |
1968 |
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Fonte/Imprenta: |
British Journal Nutrition, v. 22, p. 451-460, 1968. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: I. Two adult Barki rams weighing 43 kg were each put on a practically nitrogen-free diet until they became clearly hypoproteinic. They were then given gluten, casein and urea as sources of N at levels of 1.33, 3.33, 5.33, 7.33, 11.33 and 1433 g N/day, and N balance trials were carried out at each level. 2. Absorbed N (g/day) was plotted against N retention (g/day), and a straight-line relationship within certain limits was established. The slope K (the N balance index of absorbed N) was found to be 065, 1.05, and 0.82 for casein, gluten and urea respectively. 3. Urea N was utilized best at a level of 5.33 g N/day, and casein at levels of 11.33 and 1433 g N/day. Gluten showed almost identical "biological values" at all the levels tested. 4. It was possible to prove that urinaryN (U) excreted when the rams were in N equilibrium and were consuming rice gluten was equivalent to the endogenous urinary N (Uo), thus verifying the equation of Allison (1949), U = (I -K) A+ U,,, where A is the absorbed N. |
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Palavras-Chave: |
Avaliacao biological. |
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Thesagro: |
Nutrição; Ovino; Uréia. |
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Thesaurus Nal: |
Casein; Dietary protein; Gluten-free diet; Ruminant nutrition; Sheep; Urea. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01735naa a2200265 a 4500
001 1522549
005 2023-12-11
008 1968 bl uuuu u00u1 u #d
100 1 $aDIEF, H. I.
245 $aThe biological evaluation of urea, casein and gluten in the diets of sheep.$h[electronic resource]
260 $c1968
520 $aAbstract: I. Two adult Barki rams weighing 43 kg were each put on a practically nitrogen-free diet until they became clearly hypoproteinic. They were then given gluten, casein and urea as sources of N at levels of 1.33, 3.33, 5.33, 7.33, 11.33 and 1433 g N/day, and N balance trials were carried out at each level. 2. Absorbed N (g/day) was plotted against N retention (g/day), and a straight-line relationship within certain limits was established. The slope K (the N balance index of absorbed N) was found to be 065, 1.05, and 0.82 for casein, gluten and urea respectively. 3. Urea N was utilized best at a level of 5.33 g N/day, and casein at levels of 11.33 and 1433 g N/day. Gluten showed almost identical "biological values" at all the levels tested. 4. It was possible to prove that urinaryN (U) excreted when the rams were in N equilibrium and were consuming rice gluten was equivalent to the endogenous urinary N (Uo), thus verifying the equation of Allison (1949), U = (I -K) A+ U,,, where A is the absorbed N.
650 $aCasein
650 $aDietary protein
650 $aGluten-free diet
650 $aRuminant nutrition
650 $aSheep
650 $aUrea
650 $aNutrição
650 $aOvino
650 $aUréia
653 $aAvaliacao biological
700 1 $aEL-SHASZLEY, Y.Y.
700 1 $aABOU AKKADA, A. R.
773 $tBritish Journal Nutrition$gv. 22, p. 451-460, 1968.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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