Effect of diet nutrients density on performance and egg quality of laying hens during the post-peak production phase of the first laying cycle under subtropical climate
An experiment was done to evaluate the effects of diet nutrients density on performance and egg quality in laying hens during the post-peak production phase of the first laying cycle under subtropical climate. A total of 768, 49-weeks-old Hy-Line-W36 laying hens were assigned in a completely randomi...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2021-01-01
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| Series: | Italian Journal of Animal Science |
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| Online Access: | http://dx.doi.org/10.1080/1828051X.2021.1900753 |
| _version_ | 1818107490217230336 |
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| author | Seyed Mohammad Reza Khatibi Heydar Zarghi Abolghasem Golian |
| author_facet | Seyed Mohammad Reza Khatibi Heydar Zarghi Abolghasem Golian |
| author_sort | Seyed Mohammad Reza Khatibi |
| collection | DOAJ |
| description | An experiment was done to evaluate the effects of diet nutrients density on performance and egg quality in laying hens during the post-peak production phase of the first laying cycle under subtropical climate. A total of 768, 49-weeks-old Hy-Line-W36 laying hens were assigned in a completely randomised design with six treatments, eight replicates, and 16 birds each. Experimental treatments were given the diet with nutrients density recommended by the Hy-Line-W36 guide for their age and level of production (100%) or were given 92, 94, 96, 98, and 102% of that. During the experimental period, the average ambient temperature and humidity were 27.41 ± 2.54 °C and 35 ± 5%, respectively. By increasing diet nutrients density significantly improved egg production (EP), egg weight (EW), egg mass (EM), feed conversion ratio (FCR). Also, egg crude protein and yolk ether extract composition, egg special gravity and relative shell weight significantly increased as increased diet nutrient density. Average bird’s daily feed intake (FI), eggshell thickness, Haugh unit and solid percentage did not affect by diet nutrients density. By linear broken-line models, the diet nutrients density for optimised EP, EM, and FCR were estimated at 97.93, 97.57, and 100% of strain recommendation, respectively. It is concluded, laying hens during the post-peak production phase of the first laying cycle and under subtropical climate was not able to adjust FI with diet dilution. Nutrient requirements varied to what productive parameter was taken for optimisation. Optimum FCR was achieved when the diet was formulated to followed strain recommendations.HIGHLIGHTS Hy-Line-W36 laying hens during the post-peak production phase of the first laying cycle and under subtropical climate cannot adjust their feed intake with dietary nutrients dilution. |
| first_indexed | 2024-12-11T02:00:17Z |
| format | Article |
| id | doaj.art-0b2ea023f1ac41e5a80bceb0e21e4bb6 |
| institution | Directory Open Access Journal |
| issn | 1594-4077 1828-051X |
| language | English |
| last_indexed | 2024-12-11T02:00:17Z |
| publishDate | 2021-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Italian Journal of Animal Science |
| spelling | doaj.art-0b2ea023f1ac41e5a80bceb0e21e4bb62022-12-22T01:24:31ZengTaylor & Francis GroupItalian Journal of Animal Science1594-40771828-051X2021-01-0120155957010.1080/1828051X.2021.19007531900753Effect of diet nutrients density on performance and egg quality of laying hens during the post-peak production phase of the first laying cycle under subtropical climateSeyed Mohammad Reza Khatibi0Heydar Zarghi1Abolghasem Golian2Faculty of Agriculture, Department of Animal Science, Ferdowsi University of MashhadFaculty of Agriculture, Department of Animal Science, Ferdowsi University of MashhadFaculty of Agriculture, Department of Animal Science, Ferdowsi University of MashhadAn experiment was done to evaluate the effects of diet nutrients density on performance and egg quality in laying hens during the post-peak production phase of the first laying cycle under subtropical climate. A total of 768, 49-weeks-old Hy-Line-W36 laying hens were assigned in a completely randomised design with six treatments, eight replicates, and 16 birds each. Experimental treatments were given the diet with nutrients density recommended by the Hy-Line-W36 guide for their age and level of production (100%) or were given 92, 94, 96, 98, and 102% of that. During the experimental period, the average ambient temperature and humidity were 27.41 ± 2.54 °C and 35 ± 5%, respectively. By increasing diet nutrients density significantly improved egg production (EP), egg weight (EW), egg mass (EM), feed conversion ratio (FCR). Also, egg crude protein and yolk ether extract composition, egg special gravity and relative shell weight significantly increased as increased diet nutrient density. Average bird’s daily feed intake (FI), eggshell thickness, Haugh unit and solid percentage did not affect by diet nutrients density. By linear broken-line models, the diet nutrients density for optimised EP, EM, and FCR were estimated at 97.93, 97.57, and 100% of strain recommendation, respectively. It is concluded, laying hens during the post-peak production phase of the first laying cycle and under subtropical climate was not able to adjust FI with diet dilution. Nutrient requirements varied to what productive parameter was taken for optimisation. Optimum FCR was achieved when the diet was formulated to followed strain recommendations.HIGHLIGHTS Hy-Line-W36 laying hens during the post-peak production phase of the first laying cycle and under subtropical climate cannot adjust their feed intake with dietary nutrients dilution.http://dx.doi.org/10.1080/1828051X.2021.1900753egg performance and qualitylaying hensnutrients densitysubtropical climate |
| spellingShingle | Seyed Mohammad Reza Khatibi Heydar Zarghi Abolghasem Golian Effect of diet nutrients density on performance and egg quality of laying hens during the post-peak production phase of the first laying cycle under subtropical climate Italian Journal of Animal Science egg performance and quality laying hens nutrients density subtropical climate |
| title | Effect of diet nutrients density on performance and egg quality of laying hens during the post-peak production phase of the first laying cycle under subtropical climate |
| title_full | Effect of diet nutrients density on performance and egg quality of laying hens during the post-peak production phase of the first laying cycle under subtropical climate |
| title_fullStr | Effect of diet nutrients density on performance and egg quality of laying hens during the post-peak production phase of the first laying cycle under subtropical climate |
| title_full_unstemmed | Effect of diet nutrients density on performance and egg quality of laying hens during the post-peak production phase of the first laying cycle under subtropical climate |
| title_short | Effect of diet nutrients density on performance and egg quality of laying hens during the post-peak production phase of the first laying cycle under subtropical climate |
| title_sort | effect of diet nutrients density on performance and egg quality of laying hens during the post peak production phase of the first laying cycle under subtropical climate |
| topic | egg performance and quality laying hens nutrients density subtropical climate |
| url | http://dx.doi.org/10.1080/1828051X.2021.1900753 |
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