THE EFFECT OF CROSSBREEDING BETWEEN GABALI AND BAUSCAT RABBIT BREEDS ON PRODUCTIVE PERFORMANCE OF THEIR CROSSES
AHMED IBRAHIM ABDELMABOUD ELDOMYITY;
Abstract
Ahmed Ibrahim AbdelmaboudEldomyati: The Effect of crossbreeding Between Gabali and Bauscat Rabbit Breeds on Productive Performance of their Crosses. Unpublished M.Sc. Thesis, Department of Poultry Production, Faculty of Agriculture, Ain Shams University, 2018.
Data of 518 litter traits (litter size at birth, LSB, and at weaning, LSW, and litter weight at birth, LWB, and at weaning, LWW) produced from 4 genetic groups (2 purebreds and 2 crossbreds) were used. Data were analyzed using crossbreeding effect program to estimate crossbreeding components (additive, heterosis and maternal effect) .
Generally the experiment was conducted on Bauscat (B) and Gabali (GAB). The rabbits were fed pellets adlibitum, and slaughtered at 12 weeks of age . The following traits were recorded: body weight and average daily gain at birth to slaughter, average feed consumption from weaning to slaughter, slaughter age, carcass weight, meat, bone and fat content of carcass, prime cuts weight (fore part, loin and hind part), and dressing percentage. The results indicated that reciprocal crossbred B × GAB and GAB × B rabbits were heavier than purebred animals. B × GAB crosses attained the slaughter body weight earlier, and had lower feed consumption. The dressing percentage in B × GAB crosses was highest, while the lowest was observed in Gab rabbits. For other slaughter traits, except the fat content of carcass, effects of crossing rabbits were small. The magnitude of the crossbreeding effects depended on the direction of crossbreeding. Maximum effects in crosses for slaughter age, body weight and dressing percentage were obtained when the Bauscat breed was used as a maternal component.
Data of 518 litter traits (litter size at birth, LSB, and at weaning, LSW, and litter weight at birth, LWB, and at weaning, LWW) produced from 4 genetic groups (2 purebreds and 2 crossbreds) were used. Data were analyzed using crossbreeding effect program to estimate crossbreeding components (additive, heterosis and maternal effect) .
Generally the experiment was conducted on Bauscat (B) and Gabali (GAB). The rabbits were fed pellets adlibitum, and slaughtered at 12 weeks of age . The following traits were recorded: body weight and average daily gain at birth to slaughter, average feed consumption from weaning to slaughter, slaughter age, carcass weight, meat, bone and fat content of carcass, prime cuts weight (fore part, loin and hind part), and dressing percentage. The results indicated that reciprocal crossbred B × GAB and GAB × B rabbits were heavier than purebred animals. B × GAB crosses attained the slaughter body weight earlier, and had lower feed consumption. The dressing percentage in B × GAB crosses was highest, while the lowest was observed in Gab rabbits. For other slaughter traits, except the fat content of carcass, effects of crossing rabbits were small. The magnitude of the crossbreeding effects depended on the direction of crossbreeding. Maximum effects in crosses for slaughter age, body weight and dressing percentage were obtained when the Bauscat breed was used as a maternal component.
Other data
| Title | THE EFFECT OF CROSSBREEDING BETWEEN GABALI AND BAUSCAT RABBIT BREEDS ON PRODUCTIVE PERFORMANCE OF THEIR CROSSES | Other Titles | تأثير خلط الأرانب الجبلي بالبوسكات علي الأداء الأنتاجي لخلطانهما | Authors | AHMED IBRAHIM ABDELMABOUD ELDOMYITY | Issue Date | 2018 |
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