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2017, Number 2

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AbanicoVet 2017; 7 (2)

Effect of incubator relative humidity on hatchability and embryonic mortality of broiler chicken in Mexican dry tropic

Prado-Rebolledo O, Juárez-Estrada M

Language: Spanish
References: 24
Page: 68-74
PDF size: 544.32 Kb.


ABSTRACT

The objective of this experiment was to evaluate the effect of two relative humidities (RH) in incubator machine over hatchability and embryonic mortality of broiler chicken in Mexican dry tropics. A total of 2,520 incubating eggs were warmed at room temperature, they were weighed each one and divided into treatments (1,260 eggs/each) placed in trays and preheated. These treatments were maintained with RH to 50 ± 2 % and the other RH of 58 ± 2 %. The temperature in both incubators was kept at 37.7ºC. These conditions prevailed from day 0 until day 19 of incubation. Weight loss was more significant (P‹0.05), with 50 % RH than 58 % RH. Body weight and hatchability were no affected by incubation RH. The data of embryo mortality had a significant difference in the first week with 50 % of RH, the other stage of embryonic mortality was equal (P›0.05) with both RH incubation. The eggs incubated at 50 % RH had increased weight loss in comparison with the other incubation RH. It is concluded that both HR can be used without affecting incubating hatching.


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