Veterinarski arhiv, Vol. 86 No. 1, 2016.
Izvorni znanstveni članak
Growth performance, meat composition and haematological parameters of first generation of newly evolved hybridized pure chicken and their crossbred parents.
Tabinda Khawaja
Sohail H. Khan
orcid.org/0000-0002-5147-5458
Abida Parveen
Javid Iqbal
Sažetak
A total of 2000 un-sexed day-old chicks of FIRI (Fayoumi male x RIR female), RLH (White Leghorn male x F1 female (Fayoumi male x RIR female) and RLH-G1 (generation one of RLH) chickens were obtained from the hatchery of the Poultry Research Institute, Rawalpindi. The chickens of each crossbred were divided into 5 groups as replicates under a completely randomized design, so that there were 400 chickens in each replicate. The birds were maintained on a deep litter system for a period of 20 weeks. The results showed that the average day-old weight was highest in RLH, intermediate in RLH-G1and lowest in FIRI chickens. The RLH-G1chickens consumed less (P<0.05) feed than RLH and FIRI chickens, however, they gained more (P<0.05) weight than FIRI crossbred chickens at all ages of the growing phase. Poor (P<0.05) feed conversion was observed in FIRI chickens and better feed conversion was recorded in RLH-G1crossbred chickens during the growing phase. The RLH and RLH-G1crossbred chickens had lower (P<0.05) mortality than FIRI chickens. The highest (P>0.05) dressing %age was observed in FIRI (62.60) followed by RLH (62.10) and RLH-G1 (61.98) chickens. The breast and thigh meat composition had a non-significant (P>0.05) difference of all crossbred chickens. There was a non-significant (P>0.05) difference in haematological values between all crossbred chickens. The total erythrocyte number, Hb and packed cell volume (PCV) increased with the advancement of age. However, the erythrocyte sedimentation rate (ESR), mean corpuscular volume (MCV) and mean corpuscular hemoglobin (MCH) values decreased gradually with the advancement of age. It may be concluded that RLH and RLHG1crossbred chickens gained better body weight than FIRI chickens, with lower mortality. The first generation of RLH showed better FCR than RLH and FIRI crossbred chickens.
Ključne riječi
Crossbred chickens; body weight; meat composition; haematological parameters
Hrčak ID:
153656
URI
Datum izdavanja:
15.2.2016.
Posjeta: 2.034 *