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| Nääs,IA; Gigli,ACS; Baracho,MS; Almeida Paz,ICL; Salgado,DD. |
| Hatching results are directly related to environmental and biological surroundings. This research study aimed at evaluating the influence of incubation environmental conditions on hatchability and one-day-old chickling quality of five production flocks using multivariable analysis tool. The experiment was carried out in a commercial hatchery located in the state of São Paulo, Brazil. Environmental variables such as dry bulb temperature, relative humidity, carbon dioxide concentration, and number of colony forming units of fungi were recorded inside a broiler multi-stage setter, a hatcher after eggs transference, and a chick-processing room. The homogeneity of parameter distribution among quadrants inside the setter, the hatcher, and the chick room was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler chick; Chick quality; Hatchability; Hatchery; Incubation conditions. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400004 |
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| Demmers, Theo. |
| This study was conducted to evaluate the effect of a 12 hours light, 12 hours dark (12L:12D) photoperiod of green light during day 1 to day 18 of incubation time, on embryo growth, hatch performance and the hatch process. In the light-stimulated group, the monochromatic light was provided by a total of 204 green LEDs (522nm) mounted in a frame which was placed above the eggs to give even spread of illumination. The control group was incubated in complete darkness. Four batches of eggs (n=300 per group per batch) from fertile Ross 308 broiler breeders were used in this experiment. The beak length and crown-rump length compared of embryos incubated under green light were significantly longer than those incubated in the dark condition at day10and day 12,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler incubation; Green light; Embryo growth; Chick quality; Hatch window; Hatching time. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3162 |
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