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Effect of pre-weaning solid feed and milk intake on caecal content characteristics and performance of rabbits around weaning

Antonino Nizza, Giampiero Stanco, Carmelo Di Meo, Maria Laura Marongiu, Sylvie Taranto, Monica Isabella Cutrignelli, Luca Juliano

Authors information
  • Antonino Nizza
    Dipartimento di Scienze Zootecniche ed Ispezione degli Alimenti. Università di Napoli “Federico II”, Italy. nizza@unina.it
  • Giampiero Stanco
    Dipartimento di Scienze Zootecniche ed Ispezione degli Alimenti. Università di Napoli “Federico II”, Italy.
  • Carmelo Di Meo
    Dipartimento di Scienze Zootecniche ed Ispezione degli Alimenti. Università di Napoli “Federico II”, Italy.
  • Maria Laura Marongiu
    Dipartimento di Scienze Zootecniche ed Ispezione degli Alimenti. Università di Napoli “Federico II”, Italy.
  • Sylvie Taranto
    Dipartimento di Scienze Zootecniche ed Ispezione degli Alimenti. Università di Napoli “Federico II”, Italy.
  • Monica Isabella Cutrignelli
    Dipartimento di Scienze Zootecniche ed Ispezione degli Alimenti. Università di Napoli “Federico II”, Italy.
  • Luca Juliano
    Dipartimento di Scienze Zootecniche ed Ispezione degli Alimenti. Università di Napoli “Federico II”, Italy.

Abstract


The aim of this study is to know the effect of different solid feed and milk intake during suckling on performance around weaning and on caecal content characteristics at weaning. In order to obtain different intakes of milk and solid feed, 13 litters of pregnant females (PF) inseminated the day after delivery and 14 litters of non-pregnant females (NPF) were compared. At birth the litters were equalized at eight pups and during lactation dead pups were replaced by pups of the same age from nursing does. Compared to the PF group, rabbits in the NPF group had a higher milk intake (26.0 versus 21.4 g/day; P < 0.01) and lower solid feed intake (9.1 versus 11.5 g/day; P < 0.01) between 20 and 28 days of age. No significant difference was observed between the two groups in weight gain before and post-weaning (28-49 days). At weaning, the rabbits in group PF showed higher values in caecal content (g 26.3 versus 22.6; P < 0.05) and volatile fatty acids (mmol/l 52.2 versus 43.6; P < 0.01) and lower values in empty caecal weight (g 7.18 versus 7.78; P < 0.05), C3 (6.4 versus 9.3%; P < 0.01) and C3/C4 ratio (0.39 versus 0.63; P < 0.01) than the group NPF. On the basis of the above results, it may be concluded that the quantity of solid feed and milk intake before weaning influenced the charac- teristics of the caecal content, but not the performance of rabbits around weaning.

Keywords


Rabbits; Weaning; Feed intake; Performance; Caecal fermentation;

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Submitted: 2009-12-29 21:45:22
Published: 2009-12-29 21:45:35
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The Italian Journal of Animal Science [eISSN 1828-051X] is the official journal of the Animal Science and Production Association and it is published by PAGEPress®, Pavia, Italy. Reg. Pavia, n. 2/2010-INF. All credits and honors to PKP for their OJS.