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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Energy Requirements for Maintenance and Growth of Male Saanen Goat Kids

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Autor(es):
Medeiros, A. N. [1] ; Resende, K. T. [2] ; Teixeira, I. A. M. A. [2] ; Araujo, M. J. [3] ; Yanez, E. A. [4] ; Ferreira, A. C. D. [5]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] Univ Fed Paraiba UFPB, Dept Anim Sci, BR-58397000 Areia, PB - Brazil
[2] Univ Estadual Paulista UNESP, Dept Anim Sci, BR-14884900 Jaboticabal, SP - Brazil
[3] Univ Fed Piaui UFPI, Dept Anim Sci, BR-64900000 Born Jesus, PI - Brazil
[4] Univ Nacl Nordeste UNNE, Dept Anim Prod, RA-3400 Conientes - Argentina
[5] Univ Fed Sergipe UFS, Dept Anim Sci, BR-49100000 Aracaju, SE - Brazil
Número total de Afiliações: 5
Tipo de documento: Artigo Científico
Fonte: ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES; v. 27, n. 9, p. 1293-1302, SEP 2014.
Citações Web of Science: 4
Resumo

The aim of study was to determine the energy requirements for maintenance and growth of forty-one Saanen, intact male kids with initial body weight (BW) of 5.12 +/- 0.19 kg. The baseline (BL) group consisted of eight kids averaging 5.46 +/- 0.18 kg BW. An intermediate group consisted of six kids, fed for ad libitum intake, that were slaughtered when they reached an average BW of 12.9 +/- 0.29 kg. The remaining kids (n = 27) were randomly allocated into nine slaughter groups (blocks) of three animals distributed among three amounts of thy matter intake (DMI; ad libitum and restricted to 70% or 40% of ad libitum intake). Animals in a group were slaughtered when the ad libitum-treatment kid in the group reached 20 kg BW. In a digestibility trial, 21 kids (same animals of the comparative slaughter) were housed in metabolic cages and used in a completely randomized design to evaluate the energetic value of the diet at different feed intake levels. The net energy for maintenance (NEm) was 417 kJ/kg(0.75) of empty BW (EBW)/d, while the metabolizable energy for maintenance (MEm) was 657 kJ/kg(0.75) of EBW/d. The efficiency of ME use for NE maintenance (k(m)) was 0.64. Body fat content varied from 59.91 to 92.02 g/kg of EBW while body energy content varied from 6.37 to 7.76 MJ/kg of EBW, respectively, for 5 and 20 kg of EBW The net energy for growth (NE,) ranged from 7.4 to 9.0 MJ/kg of empty weight gain by day at 5 and 20 kg BW, respectively. This study indicated that the energy requirements in goats were lower than previously published requirements for growing dairy goats. (AU)

Processo FAPESP: 04/05833-1 - Estudo morfofisiologico do trato digestorio, composicao corporal, exigencias nutricionais, caracteristicas de carcaca e qualidade de carne de cabrito saanen.
Beneficiário:Kléber Tomás de Resende
Linha de fomento: Auxílio à Pesquisa - Regular