Effects of in ovo feeding of cationic amino acids on hatchability, hatch weights, and organ developments in domestic pigeon squabs (Columba livia)
| Autor: | Ningyu Zhang, Liping Miao, Xiaofei Zhang, Lanlan Li, Zou Xiyong |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Veterinary medicine animal structures media_common.quotation_subject medicine.medical_treatment Biology In ovo 03 medical and health sciences Animal science Domestic pigeon Cations medicine Animals media_common.cataloged_instance Amino Acids Columbidae Saline Ovum media_common chemistry.chemical_classification Hatching Reproduction Body Weight 0402 animal and dairy science Proventriculus 04 agricultural and veterinary sciences General Medicine 040201 dairy & animal science Small intestine Amino acid 030104 developmental biology medicine.anatomical_structure chemistry embryonic structures Animal Science and Zoology |
| Zdroj: | Poultry Science. 97:110-117 |
| ISSN: | 0032-5791 |
| DOI: | 10.3382/ps/pex260 |
| Popis: | This study was conducted to evaluate the effect of in ovo feeding of cationic amino acids on hatchability, hatch weights, and organ developments in pigeon squabs. Two experiments were conducted in this study. Eggs in Exp. 1 were subjected to modification of in ovo feeding in pigeons. Optimal time was determined by checking amniotic fluid volume, and suitable length was confirmed through ink injection. Results showed that the optimum time of in ovo feeding was on d 13 of embryonic development, and the suitable injected length was 20 mm to reach the amniotic cavity of the embryo. Eggs in Exp. 2 were transferred to access in ovo feeding of cationic amino acids. A total of 75 fertile pigeon eggs was randomly distributed into 5 treatments of 15 replicate eggs. Treatments in Exp. 2 consisted of non-injected controls (Control), a sterile buffered solution (0.75% saline), or a cationic amino acid mixture (> 98.5% purity crystalline L-arginine, > 98% purity crystalline L-lysine, and > 98.5% purity L-histidine) containing 0.1, 1, or 10% concentration (Conc.), which were relative to their total content in the eggs, respectively. The crystalline amino acids were dissolved in 200 μL buffered solution prior to in ovo feeding. After hatching, hatch weight (HW) and organ weight (OW) of the squabs were measured immediately. In ovo feeding of cationic amino acids increased the proportions of yolk-free hatch weight to hatch weight (YFHW/HW) (quadratic P = 0.01), and those of OW to YFHW including the heart (quadratic P = 0.01), kidney (quadratic P |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|