Presentation Title

Evaluating the effect of a cooling period on egg hatchability in a BSL-2 poultry facility

Faculty Mentor

Cord B Brundage

Start Date

17-11-2018 12:30 PM

End Date

17-11-2018 2:30 PM

Location

HARBESON 1

Session

POSTER 2

Type of Presentation

Poster

Subject Area

biological_agricultural_sciences

Abstract

Cal Poly Pomona has established a biosafety level 2 (BSL-2) facility for poultry vaccinology research. A central component of that research is the successful incubation and hatching of specific pathogen free (SPF) chicken eggs in that BSL-2 facility. Maintaining incubator conditions that simulate natural nesting is important to increase the percentage of eggs that hatch (hatchability rate). In natural nesting, the hen will periodically leave their nest for short periods of time, during which the eggs in the nest will cool temporarily. These cooling periods are essential to egg development in some avian species, but are generally not considered critical in chickens. We evaluated the effect of a cooling period on the hatchability rate of the SPF eggs in our BSL-2 Facility. Seventy-nine SPF chicken eggs were acquired by a commercial supplier. Eggs were divided into two treatment groups, one experiencing a 60 minute per day cooling period (n = 39) and one without a cooling period (n = 40). Eggs were placed in a cabinet incubator within the BSL-2 facility and incubation parameters, other than the cooling period were controlled for (humidity, temperature, turning interval etc.). Candling to evaluate egg development occurred after the 1st and before the 3rd week of incubation. This process allowed us to determine the viability and development with each protocol. The hatchability of eggs without cooling was 82.5%, this is within the interval average of commercial operations 80-85%. This would suggest that cooling is not needed in order to achieve comparable hatchability rates in our BSL-2 facility to industry standards.

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Nov 17th, 12:30 PM Nov 17th, 2:30 PM

Evaluating the effect of a cooling period on egg hatchability in a BSL-2 poultry facility

HARBESON 1

Cal Poly Pomona has established a biosafety level 2 (BSL-2) facility for poultry vaccinology research. A central component of that research is the successful incubation and hatching of specific pathogen free (SPF) chicken eggs in that BSL-2 facility. Maintaining incubator conditions that simulate natural nesting is important to increase the percentage of eggs that hatch (hatchability rate). In natural nesting, the hen will periodically leave their nest for short periods of time, during which the eggs in the nest will cool temporarily. These cooling periods are essential to egg development in some avian species, but are generally not considered critical in chickens. We evaluated the effect of a cooling period on the hatchability rate of the SPF eggs in our BSL-2 Facility. Seventy-nine SPF chicken eggs were acquired by a commercial supplier. Eggs were divided into two treatment groups, one experiencing a 60 minute per day cooling period (n = 39) and one without a cooling period (n = 40). Eggs were placed in a cabinet incubator within the BSL-2 facility and incubation parameters, other than the cooling period were controlled for (humidity, temperature, turning interval etc.). Candling to evaluate egg development occurred after the 1st and before the 3rd week of incubation. This process allowed us to determine the viability and development with each protocol. The hatchability of eggs without cooling was 82.5%, this is within the interval average of commercial operations 80-85%. This would suggest that cooling is not needed in order to achieve comparable hatchability rates in our BSL-2 facility to industry standards.