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Effects of short term exposure of eggs to magnetic field before incubation on hatchability and post-hatch performance of meat chickens 总被引:1,自引:0,他引:1
T.M. Shafey R.S. Aljumaah S.A. Swillam S.I. Al-mufarrej A.A. Al-abdullatif M.M. Ghannam 《Saudi Journal of Biological Sciences》2011,18(4):381-386
The effects of exposing meat-type breeder eggs to magnetic field (MF) before incubation on hatchability traits (percents of hatchability and hatchability failures of eggs), chick weight at hatch, and post-hatch performance (weight gain, feed intake, and feed conversion ratio (FCR)) from 1 to 39 d of age were investigated. Eggs from a Ross flock at 38 weeks of age were exposed to MF of 18 Gauss (1.8 mT) at 50 Hz for 0, 15, 30, 45, 60, and 75 min (MF0, MF15, MF30, MF45, MF60, and MF75) before incubation.Exposing eggs to MF did not influence hatchability of eggs and chick weight at hatch. However, chickens of MF60 and MF75 treatments had lower weight gain and feed intake than those of the non-exposed treatment at 39 d of age. MF exposure of eggs did not influence FCR of chickens between 1 and 21 d of age, but tended to increase FCR, albeit non-significantly, between 22 and 39 d of age.It is concluded that exposing meat-type breeder eggs to MF of 18 Gauss (1.8 mT) at 50 Hz for up to 75 min did not influence hatchability traits and chick weight at hatch. However, MF exposure of eggs for 60 and 75 min reduced body weight gain and feed intake of chickens over the 39-d experimental period. 相似文献
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Hussein MF Aljumaah RS Homeida AM Alhaidary AA Alshaikh MA Gar Elnabi A Mohammed OB Omer SA Macasero WV 《Journal of wildlife diseases》2010,46(4):1165-1171
During March 2009, we evaluated the hemostatic profile and platelet indices of 18 Arabian sand gazelles (Gazella subgutturosa marica) and compared the results with those from humans and camels (Camelus dromedarius). Gazelles and camels had shorter activated partial thromboplastin times, lower proconvertin and higher antihemophilic factor coagulation activity, and plasma fibrinogen levels than humans. Prothrombin time was longer in sand gazelles and shorter in camels than it was in humans. Plasma thromboplastin component, Stuart factor, and plasma thromboplastin antecedent were similar in gazelles, humans, and camels, whereas the platelet count of the sand gazelle was significantly higher than it was for camels and humans. 相似文献
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Abudabos Alaeldein M. Al-Atiyat Raed M. Albatshan Hamad A. Aljassim Rafat Aljumaah Mashael R. Alkhulaifi Manal M. Stanley Dragana M. 《Applied microbiology and biotechnology》2017,101(18):7017-7026
Applied Microbiology and Biotechnology - With the increasing production of ethanol for biofuels, a by-product of corn-based ethanol fermentation, dried distillers grains with solubles (DDGS) is... 相似文献
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