Determination of fertility, hatchability and stage of embryonic death in non-hatching eggs at Rubilizi national hatchery select="/dri:document/dri:meta/dri:pageMeta/dri:metadata[@element='title']/node()"/>

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dc.contributor.author Mushonga, Borden
dc.contributor.author Benimana, Theophile
dc.contributor.author Kandiwa, Erick
dc.contributor.author Chinyoka, Simbarashe
dc.contributor.author Samkange, Alaster
dc.contributor.author Bishi, Alec S.
dc.contributor.author Habarugira, Gervais
dc.date.accessioned 2017-09-29T10:17:35Z
dc.date.available 2017-09-29T10:17:35Z
dc.date.issued 2017
dc.identifier.citation Mushonga, B., Benimana, T., Kandiwa, E., et al. (2017). Determination of fertility, hatchability and stage of embryonic death in non-hatching eggs at Rubilizi national hatchery. Focus on Sciences, 3(3), 1-6. en_US
dc.identifier.uri http://hdl.handle.net/11070/2092
dc.description.abstract Background: This study was undertaken to evaluate the major causes of mortality at different stages of incubation and their economic impact in response to sustainability challenges at the Rwandan National Hatchery. Methods: The study evaluated the fertility, hatchability and embryonic deaths in broiler-producing flocks (B series) and layer-producing flocks (L series) at Rubilizi, a state-owned hatchery in Kigali, Rwanda. Results: Mean fertility in the B series (94.23%) was not significantly different (P >0.05) from that of the L series (93.24%). Mean hatchability in the B series (57.39%) was significantly (P < 0.05) higher than that of the L series (42.2%). Early embryonic deaths in the L series (8.6%) were significantly (P<0.05) higher than those in the B series (3.9%). Middle embryonic deaths in the L series (6.2%) were significantly (P < 0.05) higher than those in the B series (1.8%). Late embryonic deaths in the L series (21.6%) were significantly higher (P < 0.05) than those encountered in the B series (13.0%). The occurrence of hatch debris in the L series (34.14%) was significantly (P<0.05) higher than that in the B series (24.42%). There was no significant difference in the proportions of pips, rots and malformations/malpositions between the B and the L series (P > 0.05). Conclusions: Low hatchability in the L series possibly resulted from the higher number of embryonic deaths and hatch debris and not from reduced fertility or cull chicks. Total chick losses during the study amounted to US$54 327.00. The hatchery was experiencing more losses in layers than in broilers as emanating from low hatchability of the layers. Further investigations are needed with aim to maximise the hatchery’s capacity. en_US
dc.language.iso en en_US
dc.subject Embryo loss en_US
dc.subject Foot rot en_US
dc.subject Germ layers en_US
dc.title Determination of fertility, hatchability and stage of embryonic death in non-hatching eggs at Rubilizi national hatchery en_US
dc.type Article en_US


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