Duckweed in Irrigation Water as a Replacement of Soybean Meal in the Laying Hens Diet
Rev. bras. ciênc. avic
; 20(3): 573-582, July-Sept. 2018. tab
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em En
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| ID: biblio-1490529
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BR68.1
ABSTRACT
Water lentils (Duckweed [DW])(Lemna gibba), in irrigation ponds, was evaluated by replacing two levels of soybean meal (SBM) on performance and egg quality of laying hens of 54 weeks of age. A total of 72 white Lohmann laying hens were randomly allocated into 3 treatments with 6 replicates/treatment, 4 hens/replicate in a randomized complete block design. Treatments were control group (DW0%) with (SBM) as the main source of protein, T1 (DW10%) and T2 (DW20%), where duckweed replaced 10% and 20% of SBM for 9 weeks. No significant differences were observed among the dietary treatments in body weight change, feed conversion ratio, egg weight and mortality rate. Replacement with (DW20%) decreased (p 0.05) feed intake, egg laying rate and egg mass. The dry albuminin (DW10%) decreased (p 0.05) from 7 to 9 weeks and in the total period. Yolk pigmentation was highly (p 0.001) improved by the replacement. Blood spots were increased (p 0.05) with (DW20%). Duckweed grown in good quality irrigation water can replace up to 10% of the SBM as a source of protein without adverse effects on hen performance and egg quality in addition to profitability.
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VETINDEX
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En
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Rev. bras. ciênc. avic
Ano de publicação:
2018
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Article