Abstract

COLAS, M.; PEREZ, O.  and  TAMBARA, Y.. Influence of protein hydrolysates on bioproduction performance in L1 line White Leghorn hens. Rev. Med. Vet. Zoot. [online]. 2018, vol.65, n.2, pp.140-153. ISSN 0120-2952.  https://doi.org/10.15446/rfmvz.v65n2.75635.

The objective of this study was to evaluate the influence of protein hydrolysates (PH), as a nutritional supplement, in the bioproduction performance of White Leghorn hens. Thirty-nine-week old light line hens were assessed during six weeks. Two treatments (T) were designed involving 320 hens each (three replications of 40 hens each). In T1, each bird received 2 ml of PH daily; the birds in T2 were not offered the product. The following variables were controlled: bioproduction (total egg production, egg-laying percentage, total feed intake, mass conversion, viability, and caused mortality); incubation indicators (eggs to plant, incubation percentage, hatchability, and top quality chicks) and; quality (feed intake by top quality chicks, and top quality chicks per hen). The hens that received the PH showed significant differences in the laying, incubation, and hatchability percentage, as well as mass conversion, and the egg to plant ratio. They showed better performance in quality indicators. It is concluded that the use of PH in light line hens improves their bioproduction performance, as well as the indicators of to incubation, egg to plant ratio, and hatchability; its use also reduces by approximately 100 grams the necessary food intake to obtain top quality chicks.

Keywords : protein hydrolysates; bioproduction indicators; incubation indicators; egg quality indicators.

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