Effect of heat treatment on pre-stocking of Turkey eggs and its impact on incubation and hatching |
| |
| Institution: | 1. Department of Mathematics, Faculty of Science, Bilkent University, 06800 Ankara, Turkey;2. Department of Mathematics, Faculty of Science, Hacettepe University, 06800 Ankara, Turkey;3. Department of Mathematics, Faculty of Science, Middle East Technical University, 06800 Ankara, Turkey;1. Department of Mathematics, İzmir Institute of Technology, Urla, 35430, İzmir, Turkey;2. Department of Physics, Adnan Menderes University, 09010, Aydın, Turkey;1. Department of Physics, Chemistry and Mathematics, Alabama A&M University, Normal, AL 35762-4900, USA;2. Department of Mathematics, King Abdulaziz University, Jeddah–21589, Saudi Arabia;3. Department of Applied Mathematics, National Research Nuclear University, 31 Kashirskoe Shosse, Moscow–115409, Russian Federation;4. Institute of Mathematical Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia;5. Department of Mathematics, Hiralal Mazumdar Memorial College for Women, Dakshineswar, Kolkata–700035, India;6. Faculty of Sciences and Environment, Department of Chemistry, Physics and Environment, Dunarea de Jos University of Galati, 47 Domneasca Street, 800008, Romania;7. Department of Mathematics, Faculty of Science and Arts, Yozgat Bozok University, 66100 Yozgat, Turkey;8. Science Program, Texas A&M University at Qatar, PO Box 23874, Doha, Qatar;1. Department of Architecture and Arts. LAMA-Laboratory for Analysing Materials of Ancient Origin, Iuav University of Venice. Calle Della Laca – San Polo, 2468, I-30125, Venezia, Italy;2. Dipartimento di Scienze Della Terra, Dell''Ambiente e Delle Risorse – DiSTAR, Università Degli Studi di Napoli Federico II, Via Cintia 21, 80126 Napoli, Italy;3. Dipartimento di Biologia, Ecologia e Scienze Della Terra, Università Della Calabria, Via P. Bucci Cubo 12-b 87036 Arcavacata di Rende, Cosenza, Italy;4. Department of Earth Sciences, University of Pisa, Via Santa Maria, 53, 56126 Pisa, Italy;5. Department of Geosciences, University of Padova, Via Giovanni Gradenigo, 6, 35131 Padova, Italy |
| |
| Abstract: | Egg stocking is used to meet housing demands in the hatchery industry. Stocking periods longer than 10 days of occur commonly, despite the fact that this practice causes productive losses during the incubation process. To minimize these losses, eggs are heated before incubation to stimulate the embryo, thereby reducing the range of birth intervals. The objective of this study was to determine whether heat treatment (37.5 °C) prior to incubation would improve hatching rates. We also determined the heat-exposure time necessary to improve productivity. We stored 5376 Nicholas pedigree eggs, aged between 40 and 51 weeks, for seven days. These eggs were distributed in three groups: groups 1 and 2 received 4 and 6 h of heat treatment, respectively; group 3 was used as control (no heat treatment, remaining at 17 °C). After heat treatment, the eggs were stored for 7 days at 17 °C, together with eggs from the control group. We found significant variation in the cumulative dispersion of birds born during the hatch window; greater numbers of birds were born in group 1 that underwent the 4-h heat treatment with a 24-h hatch window and in group 3 that underwent the 6-h heat treatment with a 12-h hatch window. Hatch rate, yolk retention and the relationship between average chick weight/average egg weight did not differ between treatments. These data suggest that heat treatment modulates the hatch window; nevertheless, the treatment did not influence the average weight the chicks, the number of chicks born, the percentage of hatching or yolk retention. |
| |
| Keywords: | Hatching Incubation Turkeys Temperature |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
