Growth curves and age-related changes in carcass characteristics, organs, serum parameters, and intestinal transporter gene expression in domestic pigeon (Columba livia)

• DOI: 10.3382/ps/pev443
• Publication Date: 2016-01-20T02:50:25Z
• Authors: C.Q. Gao; J.X. Yang; M.X. Chen; H.C. Yan; X.Q. Wang
• Keywords: Avian Proteins; 2. Zero hunger; Intestine, Small; 0402 animal and dairy science; Animals; Gene Expression; Membrane Transport Proteins; 04 agricultural and veterinary sciences; Columbidae

Two experiments were conducted to fit growth curves, and determine age-related changes in carcass characteristics, organs, serum biochemical parameters, gene expression of intestinal nutrient transporters domestic pigeon (Columba livia). In experiment 1, body weight (BW) 30 pigeons was respectively determined at 3, 7, 14, 21, 28, 35 days old curves describe the pigeons. 2, eighty-four 1-day-old squabs grouped by into 7 groups. On d 35, twelve birds from each group randomly selected for slaughter post-slaughter analysis. The results showed that BW increased rapidly 1 28 (a 25.7-fold increase), then had little change until 35. Logistic, Gompertz, Von Bertalanffy functions can all be well fitted with curve (R2>0.90) Gompertz model highest R2value among models (R2=0.9997). equation Y=507.72×e-(3.76exp(-0.17t))(Y=BW (g); t=time (day)). addition, breast meat yield (%) age throughout experiment, whereas leg reached peak on 14. Serum total protein, albumin, globulin, glucose concentration age, uric acid decreased (P<0.05). Furthermore, expressions (y+LAT2, LAT1, B0AT1, PepT1, NHE2) jejunum age. correlation analysis NHE2 positive correlations (0.73<correlation coefficient<0.80,P<0.0001). It concluded that, 28-day-old should latest market type pigeon. And various physiological functional properties profiles, small intestine might cause differences their development patterns.