Body chemical composition of churra lambs at 20kg live-weigth: effect of level of milk-intake and Protein content in the post-weaning diet

  1. Manso, T. 2
  2. Mantecó, A.R. 1
  3. Castro, T. 2
  4. Lavin, P. 1
  1. 1 Consejo Superior de Investigaciones Científicas
    info

    Consejo Superior de Investigaciones Científicas

    Madrid, España

    ROR https://ror.org/02gfc7t72

  2. 2 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

Journal:
Proceedings of the British Society of Animal Production (1972)

ISSN: 0308-2296 0308-2296

Year of publication: 1994

Volume: 1994

Pages: 212-212

Type: Article

DOI: 10.1017/S0308229600027562 GOOGLE SCHOLAR lock_openOpen access editor

More publications in: Proceedings of the British Society of Animal Production (1972)

Sustainable development goals

Abstract

Body composition changes in animals undergoing compensatory growth and these response vary with the age or stage of maturity at which the restriction is applied and with the undegradable protein in the diet during post-restriction period (O'Donovan, 1984; Ryan, 1990).This experiment was conducted to determine the effect of level of intake during milk-fed period and the energy/protein relationship during post-weaning period on changes in carcass, non-carcass and empty body weigth (EBW) components in lambs slaughtered at 20 Kg live weigth (LW).A total of 16 lambs of Churra breed were used in a comparative slaughter experiment to determinate the effect of level of intake during milk-fed period (4 weeks) and the protein supplement in the diet during post-weaning period on chemical body composition at 20 Kg LWThe lambs were assigned to a 2×2×4 factorial design, defined by 2 levels of milk intake (High: 1.5 MJ GE/Kg LW°75/day and Low: 0.9 MJ GE/kg LW°75/day) during milk-fed period, 2 post-weaning concentrate supplements (HP: barley grain plus 200g/kg fish meal and LP: barley) and 4 lambs per treatment.All lambs were individually penned. During post-weaning period low quality hay and concentrate were independently offered ad libitum. Intake and LW were recorded daily and three times a week respectively. At slaughter (20Kg LW), EBW was estimated and carcass and non-carcass chemical composition (water, fat, ash and protein) and energy content was measured.

Bibliographic References

  • O'donovan, (1984), Nutr. Abs. Rev., Ser. B., 54, pp. 389
  • Ryan, (1990), Nutr. Abs. Rev., Ser. B, 60, pp. 653