Nutritive value of citrus co-products in rabbit feeding

Blas Beorlegui, Juan Carlos de and Ferrer, Pablo and Rodríguez Cortés, Carlos Alberto and Cerisuelo, A. and García Rebollar, Paloma and Calvet, Salvador and Farias Kovac, Carlos (2018). Nutritive value of citrus co-products in rabbit feeding. "World Rabbit Science", v. 26 (n. 1); pp. 7-14. ISSN 1257-5011.


Title: Nutritive value of citrus co-products in rabbit feeding
  • Blas Beorlegui, Juan Carlos de
  • Ferrer, Pablo
  • Rodríguez Cortés, Carlos Alberto
  • Cerisuelo, A.
  • García Rebollar, Paloma
  • Calvet, Salvador
  • Farias Kovac, Carlos
Item Type: Article
Título de Revista/Publicación: World Rabbit Science
Date: 2018
ISSN: 1257-5011
Volume: 26
Freetext Keywords: citrus pulp; type of fruit; processing; nutritive value; rabbits
Faculty: E.T.S. de Ingeniería Agronómica, Alimentaria y de Biosistemas (UPM)
Department: Producción Agraria
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Pulps from different citrus fruits are relevant agro-industrial co-products in the Mediterranean area in terms of amounts produced and availability. Moreover, part of the product is dehydrated, which increases its interest in monogastric species such as rabbits. Seventy eight samples from various Spanish producers using several types of fresh fruits (orange, tangerine, lemon and pomelo) and different processing methods of orange and tangerine samples (either fresh or dried after adding Ca(OH)2 ) were analysed for their chemical composition and in vitro digestibility. Average dry matter (DM) contents of ash, neutral detergent fibre, acid detergent fibre, acid detergent lignin (ADL), soluble fibre, crude protein (CP), insoluble neutral and acid detergent CP, ether extract and gross energy were 49.0, 226, 139, 12.1, 213, 71.2, 13.1, 4.2, 30.5 g and 17.8 MJ/kg DM, respectively. Mean DM and CP in vitro digestibility were 86.7 and 95.6%, respectively. Digestible energy was estimated to be 15.1 MJ/kg DM. A high variability (coefficient of variation from 17% for CP to 60% for ADL) was observed among the samples for most of the traits studied, which was partially explained by the effects of type of fruit and processing. Lemon pulps had on average higher ash and fibre but lower sugar contents than the other pulps. Dehydration processes increased ash content (almost double than for fresh pulp) due to lime addition. As regards the current results, citrus pulp has potential for use in rabbit diets as a source of energy and soluble fibre.

Funding Projects

Government of SpainAGL2014-56653CoPIGUnspecifiedUnspecified

More information

Item ID: 54584
DC Identifier:
OAI Identifier:
DOI: 10.4995/wrs.2018.7699
Official URL:
Deposited by: Memoria Investigacion
Deposited on: 10 Apr 2019 11:15
Last Modified: 30 Oct 2020 08:55
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