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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
16/09/1998 |
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Data da última atualização: |
02/08/2023 |
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Autoria: |
VOICU, I.; BURLACU, G. H.; CRITE, R. D.; VOICU, D. |
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Título: |
Study on the energy and protein requirements in goats. |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
Archivos Animal Nutrition, v. 44, n. 1, p. 47-61, 1993. |
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DOI: |
https://doi.org/10.1080/17450399309386058 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The present study focussed on the energy and protein metabolism in pregnant and lactating goats, including young female goats up to 8 months of age, in order to determine feed availability, as also the energy and protein requirements. It was found that the diets consisting of alfalfa hay, oats hay, maize, wheat bran and mixed feeds (fed to suckling females) had different availabilities in terms of energy and protien, according to animal physiological condition and age. Thus, in pregnant goats, 21 % of the metabolizable energy (ME) was used as net energy for pregnancy (foetus plus foetal membranes); the amount of energy required for maintenance was 0.400 MJ/kg0.75. The availability of digestible protein in the intestines (PDI) for pregnancy was 41.2 ± 3.1 %, while the amount of protein required for maintenance was 2.32g PDI/kg0.75. In lactating goats 60.7 % of the ME of the diets is used as milk net energy, and 58.9 of the PDI as milk protein. Young femal goats had a daily net gain ranging between 173 g and 60 g; the amount of protein in the gain varied between 23 g (month 2) and 12 g (month 8); and that of fat, between 8 g (month 1) and 24 g (month 6). The energy and protein requirements for maintenance were found to be 0.450 MJ ME/kg0.75 and 2.43 g PDI/kg0.75, respectively. The net efficiency of ME for growth was of 46.2 ± 3 % and of PDI for protein retention, of 50.1 ± 2 %. |
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Palavras-Chave: |
Exigencia; Growing; Requerimento. |
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Thesagro: |
Caprino; Crescimento; Energia; Lactação. |
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Thesaurus Nal: |
Energy requirements; Goats; Lactation; Metabolizable energy; Pregnancy; Protein requirement. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02277naa a2200325 a 4500
001 1523946
005 2023-08-02
008 1993 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1080/17450399309386058$2DOI
100 1 $aVOICU, I.
245 $aStudy on the energy and protein requirements in goats.$h[electronic resource]
260 $c1993
520 $aAbstract: The present study focussed on the energy and protein metabolism in pregnant and lactating goats, including young female goats up to 8 months of age, in order to determine feed availability, as also the energy and protein requirements. It was found that the diets consisting of alfalfa hay, oats hay, maize, wheat bran and mixed feeds (fed to suckling females) had different availabilities in terms of energy and protien, according to animal physiological condition and age. Thus, in pregnant goats, 21 % of the metabolizable energy (ME) was used as net energy for pregnancy (foetus plus foetal membranes); the amount of energy required for maintenance was 0.400 MJ/kg0.75. The availability of digestible protein in the intestines (PDI) for pregnancy was 41.2 ± 3.1 %, while the amount of protein required for maintenance was 2.32g PDI/kg0.75. In lactating goats 60.7 % of the ME of the diets is used as milk net energy, and 58.9 of the PDI as milk protein. Young femal goats had a daily net gain ranging between 173 g and 60 g; the amount of protein in the gain varied between 23 g (month 2) and 12 g (month 8); and that of fat, between 8 g (month 1) and 24 g (month 6). The energy and protein requirements for maintenance were found to be 0.450 MJ ME/kg0.75 and 2.43 g PDI/kg0.75, respectively. The net efficiency of ME for growth was of 46.2 ± 3 % and of PDI for protein retention, of 50.1 ± 2 %.
650 $aEnergy requirements
650 $aGoats
650 $aLactation
650 $aMetabolizable energy
650 $aPregnancy
650 $aProtein requirement
650 $aCaprino
650 $aCrescimento
650 $aEnergia
650 $aLactação
653 $aExigencia
653 $aGrowing
653 $aRequerimento
700 1 $aBURLACU, G. H.
700 1 $aCRITE, R. D.
700 1 $aVOICU, D.
773 $tArchivos Animal Nutrition$gv. 44, n. 1, p. 47-61, 1993.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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