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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
29/01/2019 |
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Data da última atualização: |
29/01/2019 |
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Autoria: |
MARTIN, L. C.; AMMERMAN, C. B.; HENRY, P. R.; LOGGINS, P. E. |
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Título: |
Effect of level and form of supplemental energy and nitrogen on utilization of low quality roughage by sheep. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
Journal of Animal Science, v. 53, n. 2, p. 479-488, Aug. 1981. |
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DOI: |
https://doi.org/10.2527/jas1981.532479x |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Three voluntary intake and metabolism studies were conducted to compare various levels and forms of nonprotein N (urea and biuret) and energy (corn and sugarcane molasses) as supllements for sheep consuming a low quality forage. In Exp. 1, sheep consumed hay containing 3.9% crude protein plus a dialy supplement of 0, 5 or 10 g of urea N in combination with 80 or 160 g of molasses. A control treatment group was fed no supplemental energy or N. sheep given 160 g of mollasses daily consumed less (P<.05) hay than control animals (480 vs 597 g). Increasing N levels improved (P<.05) cellulose digestiblity, organic matter digestibility and N retention. Blood urea N (BUN) levels increased with greater supplemental N levels. In Exp. 2, sheep consumed hay containing 3.4% crude protein plus a daily supplement of 0, 5 or 10 g of biuret N in combination with 0, 80 or 160 g of molasses. Cellulose digestibility was decreased (P<.05) by molasses supplementation, while organic matter digestibility was increased (P<.05) with increasing levels of biuret N. In Exp. 3, sheep fed hay containing 3.6% crude protein were supplied with either no supplemental N or 7 g of N daily from urea or biuret in combination with 60 g of dry energy supplement (50% corn meal, 25% corn starch, 25% sucrose; 4.8% crude protein) or 80 g of molasses. Cellulose and organic matter digestibilities were improved (P<.05) when diets were supplemented with urea or biuret. Supplemental energy improved (P<.05) organic matter digestibility and N retention. Prefeeding BUN values for sheep consuming urea were lower (P<.05) than those for sheep consuming biuret. MenosAbstract: Three voluntary intake and metabolism studies were conducted to compare various levels and forms of nonprotein N (urea and biuret) and energy (corn and sugarcane molasses) as supllements for sheep consuming a low quality forage. In Exp. 1, sheep consumed hay containing 3.9% crude protein plus a dialy supplement of 0, 5 or 10 g of urea N in combination with 80 or 160 g of molasses. A control treatment group was fed no supplemental energy or N. sheep given 160 g of mollasses daily consumed less (P<.05) hay than control animals (480 vs 597 g). Increasing N levels improved (P<.05) cellulose digestiblity, organic matter digestibility and N retention. Blood urea N (BUN) levels increased with greater supplemental N levels. In Exp. 2, sheep consumed hay containing 3.4% crude protein plus a daily supplement of 0, 5 or 10 g of biuret N in combination with 0, 80 or 160 g of molasses. Cellulose digestibility was decreased (P<.05) by molasses supplementation, while organic matter digestibility was increased (P<.05) with increasing levels of biuret N. In Exp. 3, sheep fed hay containing 3.6% crude protein were supplied with either no supplemental N or 7 g of N daily from urea or biuret in combination with 60 g of dry energy supplement (50% corn meal, 25% corn starch, 25% sucrose; 4.8% crude protein) or 80 g of molasses. Cellulose and organic matter digestibilities were improved (P<.05) when diets were supplemented with urea or biuret. Supplemental energy improved (P<.05) organic... Mostrar Tudo |
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Palavras-Chave: |
Low quality forages. |
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Thesaurus Nal: |
Biuret; Dietary mineral supplements; Molasses; Nitrogen; 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 02435naa a2200265 a 4500
001 2104957
005 2019-01-29
008 1981 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.2527/jas1981.532479x$2DOI
100 1 $aMARTIN, L. C.
245 $aEffect of level and form of supplemental energy and nitrogen on utilization of low quality roughage by sheep.
260 $c1981
520 $aAbstract: Three voluntary intake and metabolism studies were conducted to compare various levels and forms of nonprotein N (urea and biuret) and energy (corn and sugarcane molasses) as supllements for sheep consuming a low quality forage. In Exp. 1, sheep consumed hay containing 3.9% crude protein plus a dialy supplement of 0, 5 or 10 g of urea N in combination with 80 or 160 g of molasses. A control treatment group was fed no supplemental energy or N. sheep given 160 g of mollasses daily consumed less (P<.05) hay than control animals (480 vs 597 g). Increasing N levels improved (P<.05) cellulose digestiblity, organic matter digestibility and N retention. Blood urea N (BUN) levels increased with greater supplemental N levels. In Exp. 2, sheep consumed hay containing 3.4% crude protein plus a daily supplement of 0, 5 or 10 g of biuret N in combination with 0, 80 or 160 g of molasses. Cellulose digestibility was decreased (P<.05) by molasses supplementation, while organic matter digestibility was increased (P<.05) with increasing levels of biuret N. In Exp. 3, sheep fed hay containing 3.6% crude protein were supplied with either no supplemental N or 7 g of N daily from urea or biuret in combination with 60 g of dry energy supplement (50% corn meal, 25% corn starch, 25% sucrose; 4.8% crude protein) or 80 g of molasses. Cellulose and organic matter digestibilities were improved (P<.05) when diets were supplemented with urea or biuret. Supplemental energy improved (P<.05) organic matter digestibility and N retention. Prefeeding BUN values for sheep consuming urea were lower (P<.05) than those for sheep consuming biuret.
650 $aBiuret
650 $aDietary mineral supplements
650 $aMolasses
650 $aNitrogen
650 $aRuminant nutrition
650 $aSheep
650 $aUrea
653 $aLow quality forages
700 1 $aAMMERMAN, C. B.
700 1 $aHENRY, P. R.
700 1 $aLOGGINS, P. E.
773 $tJournal of Animal Science$gv. 53, n. 2, p. 479-488, Aug. 1981.
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Embrapa Caprinos e Ovinos (CNPC) |
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