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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
10/02/2015 |
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Data da última atualização: |
12/03/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GALVANI, D. B.; PIRES, C. C.; HÜBNER, C. H.; CARVALHO, S.; WOMMER, T. P. |
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Afiliação: |
DIEGO BARCELOS GALVANI, CNPC; Universidade Federal de Santa Maria (UFSM) - Santa Maria, RS, Brazil; C.H. Hübner, Universidade Federal de Pelotas - Pelotas, RS, Brazil; UFSM - Santa Maria, RS, Brazil; Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso do Sul (IFMS) - Ponta Porã, MS, Brazil. |
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Título: |
Growth performance and carcass traits of early-weaned lambs as affected by the nutritional regimen of lactating ewes. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Small Ruminant Research, Amsterdam, v. 120, n. 1, p. 1-5, Jul. 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Three isonitrogenous diets with different levels of metabolizable energy (ME; 10.3, 10.9, and 11.5 MJ/kg) were fed to lactating ewes to study the relationships among milk yield and feed intake, growth rate, and carcass traits of early-weaned lambs. Eighteen multiparous Texel × Ile de France ewes (55.7 ± 1.3 kg of initial body weight; BW) supporting single male lambs were penned individually at 24 h after lambing and evaluated for 42 days. Lambs had free access to a creep feeding system before weaning (42 days of age), and after that they were individually penned and fed a common diet until reaching the slaughter weight (32 kg of BW). Carcasses were then evaluated after 24 h of refrigeration. Dry matter and ME intake of ewes presented a quadratic relationship with energy level of the diet (P < 0.05), and it directly affected milk yield (P < 0.01). Milk yield was correlated with DM intake (r = ?0.75; P < 0.01) and growth rate (r = 0.74; P < 0.01) of lambs from birth to weaning. On the other hand, in this period there was no relationship between solid feed intake and ADG of lambs (r = ?0.05; P > 0.05). Therefore, creep feed supplementation was not enough to support a similar growth rate among lambs ingesting different amounts of milk. From weaning to slaughter, DM intake of lambs was greater (P < 0.05) for the lambs raised by ewes in the low-energy group, resulting in a worse feed efficiency (P < 0.05). No remarkable changes were observed in carcass traits. We concluded that improving ewe nutrition and consequently the early life nutrition of lambs can really increase profitability of lamb meat production. MenosAbstract: Three isonitrogenous diets with different levels of metabolizable energy (ME; 10.3, 10.9, and 11.5 MJ/kg) were fed to lactating ewes to study the relationships among milk yield and feed intake, growth rate, and carcass traits of early-weaned lambs. Eighteen multiparous Texel × Ile de France ewes (55.7 ± 1.3 kg of initial body weight; BW) supporting single male lambs were penned individually at 24 h after lambing and evaluated for 42 days. Lambs had free access to a creep feeding system before weaning (42 days of age), and after that they were individually penned and fed a common diet until reaching the slaughter weight (32 kg of BW). Carcasses were then evaluated after 24 h of refrigeration. Dry matter and ME intake of ewes presented a quadratic relationship with energy level of the diet (P < 0.05), and it directly affected milk yield (P < 0.01). Milk yield was correlated with DM intake (r = ?0.75; P < 0.01) and growth rate (r = 0.74; P < 0.01) of lambs from birth to weaning. On the other hand, in this period there was no relationship between solid feed intake and ADG of lambs (r = ?0.05; P > 0.05). Therefore, creep feed supplementation was not enough to support a similar growth rate among lambs ingesting different amounts of milk. From weaning to slaughter, DM intake of lambs was greater (P < 0.05) for the lambs raised by ewes in the low-energy group, resulting in a worse feed efficiency (P < 0.05). No remarkable changes were observed in carcass traits. We conclud... Mostrar Tudo |
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Palavras-Chave: |
Diets; Energy value; Feed conversion efficiency; Growth rate; Valor energético. |
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Thesagro: |
Carcaça; Concentrado energético; Cordeiro; Dieta; Eficiência nutricional; Nutrição animal; Ovelha; Ovino; Taxa de crescimento. |
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Thesaurus Nal: |
Animal nutrition; Carcass composition; creep feeding; Feed intake; Lactation; Lambs; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02828naa a2200421 a 4500
001 2008317
005 2015-03-12
008 2014 bl uuuu u00u1 u #d
100 1 $aGALVANI, D. B.
245 $aGrowth performance and carcass traits of early-weaned lambs as affected by the nutritional regimen of lactating ewes.$h[electronic resource]
260 $c2014
520 $aAbstract: Three isonitrogenous diets with different levels of metabolizable energy (ME; 10.3, 10.9, and 11.5 MJ/kg) were fed to lactating ewes to study the relationships among milk yield and feed intake, growth rate, and carcass traits of early-weaned lambs. Eighteen multiparous Texel × Ile de France ewes (55.7 ± 1.3 kg of initial body weight; BW) supporting single male lambs were penned individually at 24 h after lambing and evaluated for 42 days. Lambs had free access to a creep feeding system before weaning (42 days of age), and after that they were individually penned and fed a common diet until reaching the slaughter weight (32 kg of BW). Carcasses were then evaluated after 24 h of refrigeration. Dry matter and ME intake of ewes presented a quadratic relationship with energy level of the diet (P < 0.05), and it directly affected milk yield (P < 0.01). Milk yield was correlated with DM intake (r = ?0.75; P < 0.01) and growth rate (r = 0.74; P < 0.01) of lambs from birth to weaning. On the other hand, in this period there was no relationship between solid feed intake and ADG of lambs (r = ?0.05; P > 0.05). Therefore, creep feed supplementation was not enough to support a similar growth rate among lambs ingesting different amounts of milk. From weaning to slaughter, DM intake of lambs was greater (P < 0.05) for the lambs raised by ewes in the low-energy group, resulting in a worse feed efficiency (P < 0.05). No remarkable changes were observed in carcass traits. We concluded that improving ewe nutrition and consequently the early life nutrition of lambs can really increase profitability of lamb meat production.
650 $aAnimal nutrition
650 $aCarcass composition
650 $acreep feeding
650 $aFeed intake
650 $aLactation
650 $aLambs
650 $aSheep
650 $aCarcaça
650 $aConcentrado energético
650 $aCordeiro
650 $aDieta
650 $aEficiência nutricional
650 $aNutrição animal
650 $aOvelha
650 $aOvino
650 $aTaxa de crescimento
653 $aDiets
653 $aEnergy value
653 $aFeed conversion efficiency
653 $aGrowth rate
653 $aValor energético
700 1 $aPIRES, C. C.
700 1 $aHÜBNER, C. H.
700 1 $aCARVALHO, S.
700 1 $aWOMMER, T. P.
773 $tSmall Ruminant Research, Amsterdam$gv. 120, n. 1, p. 1-5, Jul. 2014.
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