Carcass Traits of Geese (Anser anser) as Affected by Age, Gender and Their Interactions

摘要

Background: The geese have several advantages over chickens. These birds are highly valued for its meat, also used to get rid of weeds as it was released in the fields, which the cost of raising it was low. In recent years, despite of interest in geese production, it is important to take cognisance of the fact that there is a dearth of information on carcass traits, and the different effects of age, gender and their interactions on carcass characteristics of geese. Therefore, the objective of the current study aimed to investigate effect of age, gender and their interactions on the carcass traits of geese (Anser anser). Methods: A number of geese parents at the end of the third season and their gosling hatched reared until 10 weeks of age and each stock contain equal number of sexes for assessing carcass traits. All geese were reared under equal managerial, environmental and hygienic conditions. Result: Parent stock was significantly (p=0.0001) higher body weight, dressing percentage and edible meat parts compared to the young geese. Males geese had approximately a 17% significantly higher live weight, a 4.6% higher dressed carcass percentage and 5.2% higher edible meat parts percentage than females. The intestine and neck percentages were significantly affected only by age, whereas blood and feather percentages were significantly affected only by gender. Moreover, abdominal fat and gizzard fat percentages were affected by all observed factors. The young geese had approximately a 24.7% higher non-edible meat percentage than the parents geese. Females geese had approximately 8.7% higher non-edible meat percentage than males. Abdominal and gizzard fat (%) were significantly affected by interaction between age and gender. A significant positive correlation coefficient was detected between live body weight and all edible parts of carcass characteristics weights for goose males. In conclusion, the increase of age had a positive effect on the carcass traits of geese (Anser anser). Males geese had a better carcass characteristics compared to females; in addition, the females were significantly higher than males for the abdominal fat and gizzard fat percentages.