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Trakia Journsl of Science, 2016, vol.14, n.1 >
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|Title: ||Productive performance of Easter egger crosses of Araucana and Schijndelaar roosters with white Leghorn hens|
|Authors: ||Lukanov, H.|
|Keywords: ||chicken eggs|
|Issue Date: ||2016|
|Citation: ||H. Lukanov, P. Petrov, A. Genchev, E. Halil and N. Ismail|
|Abstract: ||During the past decade, consumers in some regions of the world evidenced a marked interest to eggs with non-traditional shell colour. The aim of the present study was to investigate the productive traits of Easter eggers, obtained by crossbreeding of Araucana and Schijndelaar roosters with White Leghorn layer hens. For this purpose, a total of five groups of hens were used: three control: group L (White Leghorn), group A (Araucana), group S (Schijndelaar) and two experimental: group AWL (F1 Araucana×White Leghorn) and group SWL (F1 Schijndelaar×White Leghorn). During the production cycle which continued up to 65 weeks of age, the following traits were evaluated: live weight at 20% and 50% egg production; economic maturity; average weekly feed intake and feed conversion, egg production and egg weight.
At the age of 50% egg production, Araucana had the highest live body weight (1408.25 ±19.25 g), and Leghorns – the lowest (1297.45 ±10.25 g) (p<0.05). The best economic maturity was exhibited by White Leghorn group (135 days of age), whereas the Schijndelaar group attained economic maturity at 205 days of age. The most efficient feed conversion (p<0.001) for production of one egg and 1 kg egg mass was observed in group L (133.46±1.94 g and 2.19±0.05 kg/kg respectively). The highest hen-day egg production was recorded in group L and the lowest – in Schijndelaar (group S) and Araucana (group A). The weight of White Leghorn eggs was substantially higher (р<0.001) compared to eggs laid by Schijndelaars and Araucanas. The traits characterizing the economic efficiency of layer hens (feed conversion per egg produced and per 1 kg egg mass) in experimental groups were comparable to traits recorded in heavy egg-laying hybrids.|
|Appears in Collections:||Trakia Journsl of Science, 2016, vol.14, n.1|
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