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Investigación Agraria

On-line version ISSN 2305-0683


OCAMPOS OLMEDO, Diego Avilio; MEDINA, Diego; ALONZO GRIFFITH, Luis Alberto  and  LEZCANO, Carlos Alberto. Replacing corn by dried citrus pulp in diets for lambs: productive performance and characteristics of non-carcass components. Investig. Agrar. [online]. 2018, vol.20, n.1, pp.1-10. ISSN 2305-0683.

Dehydrated citrus pulp (DCP) is a highly energetic by-product with the potential to substitute cereal grains for domestic animals feeding. Thirty-two castrated male lambs, crossbred Santa Inés × Texel were employed to evaluate the effect of the substitution of corn by DCP on productive performance and non-carcass components characteristics . The inclusion of DCP in the ration in proportions of 14.47; 28.94 and 43.41% of DM constituted the four treatments 0PCD, 14PCD, 29PCD and 43PCD. The delineation was the complete random blocks (blocked by weight) with four replicates. Data were submitted to ANAVA and the means were compared by the Duncan test (P <0.05). It was verified that the live weight (PV = 39.5 kg) and the carcass weight (PC = 19.3 kg) were lower for 0PCD compared to the other treatments with increasing level of corn substitution (p <0.02). The average yield of the carcass was 48.75%. The gastrointestinal tract weight (GIT) of 29PCD had a higher net weight (7.1 kg) compared to 0PCD and 14PCD (p<0.042). The lowest net weight of the reticulum-rumen set was found in animals that consumed 100% corn as a feed energy source with 2.81 kg and the highest weight was found in 29PCD with 3.95 kg (p <0.02). There were no differences (p>0.05) in the other components of GIT, in total fat and in the net weights of the different vital organs.

Keywords : vital organs; sheep; dehydrated citrus pulp; performance; by-products; gastrointestinal tract.

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