IMPACT OF SHORT-TERM SELECTION FOR BODY WEIGHT AND GROWTH RATE ON HEMATOLOGICAL PARAMETERS, PLASMA CONSTITUENTS AND CARCASS TRAITS IN JAPANESE QUAIL. | ||
| Fayoum Journal of Agricultural Research and Development | ||
| Article 12, Volume 20, Issue 2, July 2006, Pages 132-141 PDF (359.97 K) | ||
| Document Type: Research articles. | ||
| DOI: 10.21608/fjard.2006.197594 | ||
| Authors | ||
| Ensaf A. El Full; Bothaina Y. F. Mahmoud; Hanan A. Hassan; E. M. Omar | ||
| Poult. Prod. Dept., Fac. Agric., Fayoum Univ., Egypt. | ||
| Abstract | ||
| Chicks of three lines of Japanese quail were used to study the effects of sex, line and age on hematology, growth and carcass traits in Japanese quail. The first line was selected for high 6 week-body weight (HBW6) while second line was selected for high 0-6week growth rate (HGR0-6) for three generations and the third line was randombred control (RC). Birds at 6 weeks of age had significantly higher values of live body weight (LBW), carcass%, dressing%, boneless meat% (BLM%), fat%, protein%, red blood cells (RBCs), total proteins (TP), globulin (Glob), triglycerides (TG), total lipids (TL) and growth hormone (GH) than those at 3 weeks of age. However, birds at 3 weeks of age had the highest hemoglobin (Hb), white blood cells (WBCs) and albumin (Alb) values as compared with those at 6 weeks of age. The HGR0-6 line had higher BW6, performance index (PI), carcass%, dressing%, BLM%, TP, Alb, TL, triiodothyronine (T3) and ratio of T3 to thyroxine (T3/T4) than other lines. Females had significantly higher BW, PI, TP, Alb, Glob, TG and TL than males. Males had significantly higher carcass%, dressing%, BLM%, GH and T3/T4 than females. Significant line by age interactions were found for BW, carcass%, dressing%, fat%, protein%, Hb, PCV%, RBCs, TP, Alb, Glob, GH, T3, T4 and T3/ T4. It can be concluded that selection has a central role in variations in plasma constituents, hematological parameters and carcass traits which are related to differences in age and sex of Japanese quail. | ||
| Keywords | ||
| Hematology; plasma; carcass traits; short-term selection; body weight; growth rate; Japanese quail | ||
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