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Effect of egg size and day length on reproductive and growth performance, egg characteristics and blood profile of the Guinea fowl

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dc.contributor.author Kyere, C.G.
dc.contributor.author Annor, S.Y.
dc.contributor.author Kagya-Agyemang, J.K.
dc.contributor.author Korankye, O.
dc.date.accessioned 2019-11-28T12:24:39Z
dc.date.available 2019-11-28T12:24:39Z
dc.date.issued 2017
dc.identifier.uri http://ir.uew.edu.gh/xmlui/handle/123456789/376
dc.description Published in Livestock Research for Rural Development en_US
dc.description.abstract This study was conducted to investigate the influence of egg size and day length on reproductive and growth performance, egg characteristics and blood profile of indigenous guinea fowls in Ghana. Two hundred and forty day old keets hatched from three different egg size groups: small (23-39g); medium (40-42g) and large (43-49g) were used in the experiment. The birds were subjected to artificial light between 6 to 36 weeks and the treatment groups were 12 hours of light: 12 hours of darkness, 14 hours of light: 10 hours of darkness, 16 hours of light: 8 hours of darkness and 18 hours of light: 6 hours of darkness with an average light intensity of 5.6 lux in a 3?4 factorial design. Data were analysis using General Linear Model (GLM) procedure of SAS. The best (p<0.05) hatchability was observed from medium size eggs with both small and large eggs showing poor results. Daily feed intake increased with an increase in the size of the eggs. Large size egg had the highest (p<0.05) yolk height, followed by both medium and small size eggs. Shell weight and shell thickness increased with increase in egg size. Age at sexual maturity reduced with increasing egg size. Similar trend was observed in egg size at first egg laid. Daily feed intake increased with increasing day length. Age at sexual maturity reduced with increasing day length. Similar trend was observed in egg size at first egg laid. It was concluded that medium size eggs had higher hatchability. Daily feed intake increased with increasing egg size and day length. Age at sexual maturity decreased with increasing egg size and day length, whereas egg weight at first egg laying increased with increasing egg size and day length. en_US
dc.language.iso en en_US
dc.publisher Fundacion CIPAV en_US
dc.subject Age at sexual maturity en_US
dc.subject Dead in shell en_US
dc.subject Fertility en_US
dc.subject Hatchability en_US
dc.subject Light and piped eggs en_US
dc.title Effect of egg size and day length on reproductive and growth performance, egg characteristics and blood profile of the Guinea fowl en_US
dc.type Article en_US


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