Energetic Values and Inclusion Levels of the Dry Residue of Cassava in Broiler Diet
Autor: | R. V. Nunes, Cinthia Eyng, Idiana Mara da Silva, Rodrigo André Schone, Jomara Broch, H Trautenmüller, Rafael Frank, IC Pires Filho, Plo Carvalho |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
intestinal morphometry
Chemistry business.industry Veterinary medicine Poultry farming co-product Broiler Co product Feed conversion ratio SF1-1100 cassava Animal culture Deposition rate Animal science QL1-991 SF600-1100 parasitic diseases medicine Animal Science and Zoology medicine.symptom business Weight gain Zoology Completely randomized design |
Zdroj: | Brazilian Journal of Poultry Science v.22 n.4 2020 Brazilian Journal of Poultry Science Fundação APINCO de Ciência e Tecnologia Avícolas (FACTA) instacron:FACTA Brazilian Journal of Poultry Science, Vol 22, Iss 4 (2020) Brazilian Journal of Poultry Science, Volume: 22, Issue: 4, Article number: eRBCA-2019-1183, Published: 14 DEC 2020 |
Popis: | The objective of this study was to evaluate the energetic values of dry residue of cassava (DRC) and the effects of its inclusion in broiler diets on performance, intestinal morphometry, protein and fat deposition rate, and carcass and cut yields. In experiment I, two metabolism trials were carried out from 11-21 and from 31-41 days of age. The birds were distributed in a completely randomized design and DRC was included at levels of 10, 20, 30 and 40% in the basal diet. In experiment II, 980 male chicks were distributed in a completely randomized design with seven treatments (0; 2; 4; 6; 8; 10; 12% DRC) and seven replicates. DRC levels did not influence (p>0.05) the energetic values. From days 1-7, weight gain (WG) had a linear adjustment, and the inclusion of up to 6% of DRC from d 1-7, and the feed conversion ratio (FCR) had a tendency (p=0.060) with quadratic effect (p=0.001), and the worst FCR was observed with the inclusion of 5.81% of DRC. From d 1-21 of age, the WG decreased linearly, with the increasing of DRC while the FCR increased linearly. Breast yield decreased linearly with increasing levels of DRC inclusion. The addition of the residue reduced the protein deposition rate (PDR) and did not alter the (fat deposition rate) FDR. The metabolizable energy of DRC was 1534 kcal kg-1 (11-21 d), 1746 kcal kg-1 (d 31-42) and can be included up to 6% until d 42 in the broiler`s diet without harming the performance. |
Databáze: | OpenAIRE |
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