| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
|
Data corrente: |
02/12/2004 |
|
Data da última atualização: |
10/01/2024 |
|
Autoria: |
HEANEY, D. P.; SHRESTHA, J. N. B.; PETERS, H. F. |
|
Título: |
Effects of postweaning protein regimens and urea on the performance of intensively reared lambs. |
|
Ano de publicação: |
1983 |
|
Fonte/Imprenta: |
Canadian Journal of Animal Science, v. 63, n. 3, p. 631-641, Sept., 1983. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract: Seven hundred fifty artificially reared lambs that had been weaned from milk replacer at 3?wk of age were randomly assigned, at weaning, to 12 ration sequences: 20% vs 17% dietary crude protein from weaning to 56 days of age, 17% dietary protein from 57 to 98 days of age and 17 vs 14% dietary protein from 99 to 140 days of age and each of the resulting four dietary protein concentration regimens with the protein being provided as natural protein throughout, with 30% of the protein being provided as urea throughout or with 30% of the protein being provided as urea from 57 to 140 days of age. The diets contained 72% corn-soybean meal, or corn-soybean-meal-urea and 20% ground hay, providing about 3?mcal/kg of digestible energy. Maximum growth performance was achieved by the lambs fed diets containing only natural protein in the concentration sequence of 20/17/17. However, the advantage (though statistically significant at a probability of 0.05) was small and slightly lower gains with the protein sequence of 17/17/14 might prove economical because of the savings in expensive protein supplement. There was generally no advantage in growth performance as a result of 17% vs 14% dietary protein after 98 days of age. The results also indicated that such lambs can adapt to, and utilize, urea but that introduction of urea should be delayed for about 2?wk after weaning to allow sufficient time for development of fully functional rumens. Key words: Lambs, protein requirements, urea, artificially reared, early weaned MenosAbstract: Seven hundred fifty artificially reared lambs that had been weaned from milk replacer at 3?wk of age were randomly assigned, at weaning, to 12 ration sequences: 20% vs 17% dietary crude protein from weaning to 56 days of age, 17% dietary protein from 57 to 98 days of age and 17 vs 14% dietary protein from 99 to 140 days of age and each of the resulting four dietary protein concentration regimens with the protein being provided as natural protein throughout, with 30% of the protein being provided as urea throughout or with 30% of the protein being provided as urea from 57 to 140 days of age. The diets contained 72% corn-soybean meal, or corn-soybean-meal-urea and 20% ground hay, providing about 3?mcal/kg of digestible energy. Maximum growth performance was achieved by the lambs fed diets containing only natural protein in the concentration sequence of 20/17/17. However, the advantage (though statistically significant at a probability of 0.05) was small and slightly lower gains with the protein sequence of 17/17/14 might prove economical because of the savings in expensive protein supplement. There was generally no advantage in growth performance as a result of 17% vs 14% dietary protein after 98 days of age. The results also indicated that such lambs can adapt to, and utilize, urea but that introduction of urea should be delayed for about 2?wk after weaning to allow sufficient time for development of fully functional rumens. Key words: Lambs, protein requirements, u... Mostrar Tudo |
|
Palavras-Chave: |
Nível de proteína. |
|
Thesagro: |
Confinamento; Conversão Alimentar; Cordeiro; Ganho de Peso; Nutrição Animal; Ovino; Uréia. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02254naa a2200241 a 4500
001 1530846
005 2024-01-10
008 1983 bl uuuu u00u1 u #d
100 1 $aHEANEY, D. P.
245 $aEffects of postweaning protein regimens and urea on the performance of intensively reared lambs.$h[electronic resource]
260 $c1983
520 $aAbstract: Seven hundred fifty artificially reared lambs that had been weaned from milk replacer at 3?wk of age were randomly assigned, at weaning, to 12 ration sequences: 20% vs 17% dietary crude protein from weaning to 56 days of age, 17% dietary protein from 57 to 98 days of age and 17 vs 14% dietary protein from 99 to 140 days of age and each of the resulting four dietary protein concentration regimens with the protein being provided as natural protein throughout, with 30% of the protein being provided as urea throughout or with 30% of the protein being provided as urea from 57 to 140 days of age. The diets contained 72% corn-soybean meal, or corn-soybean-meal-urea and 20% ground hay, providing about 3?mcal/kg of digestible energy. Maximum growth performance was achieved by the lambs fed diets containing only natural protein in the concentration sequence of 20/17/17. However, the advantage (though statistically significant at a probability of 0.05) was small and slightly lower gains with the protein sequence of 17/17/14 might prove economical because of the savings in expensive protein supplement. There was generally no advantage in growth performance as a result of 17% vs 14% dietary protein after 98 days of age. The results also indicated that such lambs can adapt to, and utilize, urea but that introduction of urea should be delayed for about 2?wk after weaning to allow sufficient time for development of fully functional rumens. Key words: Lambs, protein requirements, urea, artificially reared, early weaned
650 $aConfinamento
650 $aConversão Alimentar
650 $aCordeiro
650 $aGanho de Peso
650 $aNutrição Animal
650 $aOvino
650 $aUréia
653 $aNível de proteína
700 1 $aSHRESTHA, J. N. B.
700 1 $aPETERS, H. F.
773 $tCanadian Journal of Animal Science$gv. 63, n. 3, p. 631-641, Sept., 1983.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 3 | |
| Registros recuperados : 3 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
