Effect of dietary magnesium, calcium, phosphorus, and limestone grain size on productive performance and eggshell quality of hens
Two experiments conducted on laying hens, aged 50 and 52 weeks, were carried out to evaluate the effect of dietary Mg and its relationship to the Ca : NPP (non-phytate phosphorus) ratio using a various grain-size of limestone. The Ca : NPP ratio in each experiment was 12.8 and 18, respectively. Two...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2016-10-01
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| Series: | Czech Journal of Animal Science |
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| Online Access: | https://cjas.agriculturejournals.cz/artkey/cjs-201610-0004_effect-of-dietary-magnesium-calcium-phosphorus-and-limestone-grain-size-on-productive-performance-and-eggshe.php |
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| author | M. Skřivan M. Englmaierová M. Marounek V. Skřivanová T. Taubner T. Vít |
| author_facet | M. Skřivan M. Englmaierová M. Marounek V. Skřivanová T. Taubner T. Vít |
| author_sort | M. Skřivan |
| collection | DOAJ |
| description | Two experiments conducted on laying hens, aged 50 and 52 weeks, were carried out to evaluate the effect of dietary Mg and its relationship to the Ca : NPP (non-phytate phosphorus) ratio using a various grain-size of limestone. The Ca : NPP ratio in each experiment was 12.8 and 18, respectively. Two Mg levels were evaluated in the first (1.56 and 4.0 g/kg) and the second experiment (1.52 and 4.0 g/kg). A fine-grained limestone (< 0.5 mm; FL) or a coarse-grained limestone (0.8-2 mm; CL) was used in the first experiment. In the second experiment, a mixture of both the aforementioned limestone forms (FCL) was used as the third alternative. The main parameters estimated in this study were egg production and egg shell breaking strength. In the first experiment, CL significantly increased hen-day egg production (P = 0.043) and Mg (in dietary concentration up to 4 g/kg) increased egg weight (P < 0.001). The addition of Mg to the mixed feed, together with CL, decreased yolk percentage (P = 0.008), increased egg shell percentage (P = 0.044), increased egg shell thickness (P = 0.014), and egg shell breaking strength (P = 0.003). Higher dietary Mg, together with a wider Ca : NPP ratio in the second experiment, increased egg production and egg weight (P < 0.001), but it did not influence egg shell breaking strength. CL increased egg shell breaking strength compared to the addition of FL, as well as FCL (P < 0.05), regardless of the Mg levels. Lower level of Mg with FL decreased ash content of shells (P = 0.004). |
| first_indexed | 2024-04-10T08:24:48Z |
| format | Article |
| id | doaj.art-2a5d633ab9e24cd0abd85c7badffea4a |
| institution | Directory Open Access Journal |
| issn | 1212-1819 1805-9309 |
| language | English |
| last_indexed | 2024-04-10T08:24:48Z |
| publishDate | 2016-10-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Czech Journal of Animal Science |
| spelling | doaj.art-2a5d633ab9e24cd0abd85c7badffea4a2023-02-23T03:33:24ZengCzech Academy of Agricultural SciencesCzech Journal of Animal Science1212-18191805-93092016-10-01611047348010.17221/3/2016-CJAScjs-201610-0004Effect of dietary magnesium, calcium, phosphorus, and limestone grain size on productive performance and eggshell quality of hensM. Skřivan0M. Englmaierová1M. Marounek2V. Skřivanová3T. Taubner4T. Vít5Department of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, Prague-Uhříněves, Czech RepublicDepartment of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, Prague-Uhříněves, Czech RepublicDepartment of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, Prague-Uhříněves, Czech RepublicDepartment of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, Prague-Uhříněves, Czech RepublicDepartment of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, Prague-Uhříněves, Czech RepublicDepartment of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, Prague-Uhříněves, Czech RepublicTwo experiments conducted on laying hens, aged 50 and 52 weeks, were carried out to evaluate the effect of dietary Mg and its relationship to the Ca : NPP (non-phytate phosphorus) ratio using a various grain-size of limestone. The Ca : NPP ratio in each experiment was 12.8 and 18, respectively. Two Mg levels were evaluated in the first (1.56 and 4.0 g/kg) and the second experiment (1.52 and 4.0 g/kg). A fine-grained limestone (< 0.5 mm; FL) or a coarse-grained limestone (0.8-2 mm; CL) was used in the first experiment. In the second experiment, a mixture of both the aforementioned limestone forms (FCL) was used as the third alternative. The main parameters estimated in this study were egg production and egg shell breaking strength. In the first experiment, CL significantly increased hen-day egg production (P = 0.043) and Mg (in dietary concentration up to 4 g/kg) increased egg weight (P < 0.001). The addition of Mg to the mixed feed, together with CL, decreased yolk percentage (P = 0.008), increased egg shell percentage (P = 0.044), increased egg shell thickness (P = 0.014), and egg shell breaking strength (P = 0.003). Higher dietary Mg, together with a wider Ca : NPP ratio in the second experiment, increased egg production and egg weight (P < 0.001), but it did not influence egg shell breaking strength. CL increased egg shell breaking strength compared to the addition of FL, as well as FCL (P < 0.05), regardless of the Mg levels. Lower level of Mg with FL decreased ash content of shells (P = 0.004).https://cjas.agriculturejournals.cz/artkey/cjs-201610-0004_effect-of-dietary-magnesium-calcium-phosphorus-and-limestone-grain-size-on-productive-performance-and-eggshe.phpmagnesium oxidelimestone granularitymixed feedca : npp ratioegg shell strengthlayers |
| spellingShingle | M. Skřivan M. Englmaierová M. Marounek V. Skřivanová T. Taubner T. Vít Effect of dietary magnesium, calcium, phosphorus, and limestone grain size on productive performance and eggshell quality of hens Czech Journal of Animal Science magnesium oxide limestone granularity mixed feed ca : npp ratio egg shell strength layers |
| title | Effect of dietary magnesium, calcium, phosphorus, and limestone grain size on productive performance and eggshell quality of hens |
| title_full | Effect of dietary magnesium, calcium, phosphorus, and limestone grain size on productive performance and eggshell quality of hens |
| title_fullStr | Effect of dietary magnesium, calcium, phosphorus, and limestone grain size on productive performance and eggshell quality of hens |
| title_full_unstemmed | Effect of dietary magnesium, calcium, phosphorus, and limestone grain size on productive performance and eggshell quality of hens |
| title_short | Effect of dietary magnesium, calcium, phosphorus, and limestone grain size on productive performance and eggshell quality of hens |
| title_sort | effect of dietary magnesium calcium phosphorus and limestone grain size on productive performance and eggshell quality of hens |
| topic | magnesium oxide limestone granularity mixed feed ca : npp ratio egg shell strength layers |
| url | https://cjas.agriculturejournals.cz/artkey/cjs-201610-0004_effect-of-dietary-magnesium-calcium-phosphorus-and-limestone-grain-size-on-productive-performance-and-eggshe.php |
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