Effects of dietary digestible lysine levels in breeding Japanese quails on productive and reproductive performance, egg quality, blood metabolites and immune responses
Abstract Background The vegetable‐based diet alone does not provide the lysine (Lys) needed to maximize poultry productive performance. Objectives This experiment aimed to evaluate the effects of dietary digestible Lys (dLys) level on productive and reproductive performance, egg quality, blood metab...
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Wiley
2024-11-01
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| Series: | Veterinary Medicine and Science |
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| Online Access: | https://doi.org/10.1002/vms3.70038 |
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| author | Mohammad Amin Omary Heydar Zarghi Ahmad Hassanabadi |
| author_facet | Mohammad Amin Omary Heydar Zarghi Ahmad Hassanabadi |
| author_sort | Mohammad Amin Omary |
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| description | Abstract Background The vegetable‐based diet alone does not provide the lysine (Lys) needed to maximize poultry productive performance. Objectives This experiment aimed to evaluate the effects of dietary digestible Lys (dLys) level on productive and reproductive performance, egg quality, blood metabolites and immune responses in breeding Japanese quails (Coturnix japonica). Methods The experiment was conducted in a completely randomized design with 6 treatments, 5 replicates and 15 (12 females and 3 meals) 10‐week‐old breeding Japanese quails each. A basal diet was formulated to meet nutritional requirements of breeding quails except dLys. The basal diet was supplemented with graded (+0.82 g/kg) levels of l‐Lys‐HCl, corresponding to dietary dLys levels of 0.690%, 0.755%, 0.820%, 0.885%, 0.950% and 1.015%. The experiment lasted for 12 weeks, which was divided into 3‐4‐week periods. Results Significant differences were observed for egg production (EP), egg mass (EM) and feed efficiency (FE) in response to increasing dietary dLys concentration with quadratic trends. The highest traits were observed in the birds fed with a diet containing 0.885% dLys. However, feed intake, egg quality, reproductive performance, blood metabolites and immune responses against sheep red blood cell inoculation were not significantly affected by increasing dietary dLys concentrations. The dLys requirements during 11–14, 15–18, 19–22 and 11–22 (overall) weeks of age for optimal EP, EM and FE, based on the quadratic broken‐line regression analysis, were estimated 272, 265, 250 and 266; 293, 285, 264 and 279; and 303, 294, 281 and 293 mg/bird/day, respectively. Conclusions The dLys requirements vary depending on the EP phase and the trait being optimized. The estimated dLys requirement for FE was higher than those for EP and EM. During the peak stage of the first laying cycle, the dietary dLys level of 0.932% and a daily intake of 303 mg dLys/bird are sufficient for optimal performance. |
| format | Article |
| id | doaj-art-c1607501561b410b979f97adc7566788 |
| institution | Kabale University |
| issn | 2053-1095 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Veterinary Medicine and Science |
| spelling | doaj-art-c1607501561b410b979f97adc75667882025-01-20T17:16:44ZengWileyVeterinary Medicine and Science2053-10952024-11-01106n/an/a10.1002/vms3.70038Effects of dietary digestible lysine levels in breeding Japanese quails on productive and reproductive performance, egg quality, blood metabolites and immune responsesMohammad Amin Omary0Heydar Zarghi1Ahmad Hassanabadi2Department of Animal Science, Faculty of Agriculture Ferdowsi University of Mashhad Mashhad IranDepartment of Animal Science, Faculty of Agriculture Ferdowsi University of Mashhad Mashhad IranDepartment of Animal Science, Faculty of Agriculture Ferdowsi University of Mashhad Mashhad IranAbstract Background The vegetable‐based diet alone does not provide the lysine (Lys) needed to maximize poultry productive performance. Objectives This experiment aimed to evaluate the effects of dietary digestible Lys (dLys) level on productive and reproductive performance, egg quality, blood metabolites and immune responses in breeding Japanese quails (Coturnix japonica). Methods The experiment was conducted in a completely randomized design with 6 treatments, 5 replicates and 15 (12 females and 3 meals) 10‐week‐old breeding Japanese quails each. A basal diet was formulated to meet nutritional requirements of breeding quails except dLys. The basal diet was supplemented with graded (+0.82 g/kg) levels of l‐Lys‐HCl, corresponding to dietary dLys levels of 0.690%, 0.755%, 0.820%, 0.885%, 0.950% and 1.015%. The experiment lasted for 12 weeks, which was divided into 3‐4‐week periods. Results Significant differences were observed for egg production (EP), egg mass (EM) and feed efficiency (FE) in response to increasing dietary dLys concentration with quadratic trends. The highest traits were observed in the birds fed with a diet containing 0.885% dLys. However, feed intake, egg quality, reproductive performance, blood metabolites and immune responses against sheep red blood cell inoculation were not significantly affected by increasing dietary dLys concentrations. The dLys requirements during 11–14, 15–18, 19–22 and 11–22 (overall) weeks of age for optimal EP, EM and FE, based on the quadratic broken‐line regression analysis, were estimated 272, 265, 250 and 266; 293, 285, 264 and 279; and 303, 294, 281 and 293 mg/bird/day, respectively. Conclusions The dLys requirements vary depending on the EP phase and the trait being optimized. The estimated dLys requirement for FE was higher than those for EP and EM. During the peak stage of the first laying cycle, the dietary dLys level of 0.932% and a daily intake of 303 mg dLys/bird are sufficient for optimal performance.https://doi.org/10.1002/vms3.70038breeding Japanese quaildigestible lysinerequirementregression model |
| spellingShingle | Mohammad Amin Omary Heydar Zarghi Ahmad Hassanabadi Effects of dietary digestible lysine levels in breeding Japanese quails on productive and reproductive performance, egg quality, blood metabolites and immune responses Veterinary Medicine and Science breeding Japanese quail digestible lysine requirement regression model |
| title | Effects of dietary digestible lysine levels in breeding Japanese quails on productive and reproductive performance, egg quality, blood metabolites and immune responses |
| title_full | Effects of dietary digestible lysine levels in breeding Japanese quails on productive and reproductive performance, egg quality, blood metabolites and immune responses |
| title_fullStr | Effects of dietary digestible lysine levels in breeding Japanese quails on productive and reproductive performance, egg quality, blood metabolites and immune responses |
| title_full_unstemmed | Effects of dietary digestible lysine levels in breeding Japanese quails on productive and reproductive performance, egg quality, blood metabolites and immune responses |
| title_short | Effects of dietary digestible lysine levels in breeding Japanese quails on productive and reproductive performance, egg quality, blood metabolites and immune responses |
| title_sort | effects of dietary digestible lysine levels in breeding japanese quails on productive and reproductive performance egg quality blood metabolites and immune responses |
| topic | breeding Japanese quail digestible lysine requirement regression model |
| url | https://doi.org/10.1002/vms3.70038 |
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