{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,6]],"date-time":"2026-06-06T08:22:25Z","timestamp":1780734145308,"version":"3.54.1"},"reference-count":41,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2024,1,14]],"date-time":"2024-01-14T00:00:00Z","timestamp":1705190400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006769","name":"Russian Science Foundation","doi-asserted-by":"publisher","award":["21-16-00086"],"award-info":[{"award-number":["21-16-00086"]}],"id":[{"id":"10.13039\/501100006769","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>The aim of the current study was to assess the female metabolic rate and test the hypothesis that there is a relationship between the egg productivity of Japanese quails from eight breeds and their morphometric, or growth, parameters. Parameters measured were body weight (B), volume (V), and surface area (S), as well as the metabolism level expressed by the ratio S\/V. The collected egg performance traits were as follows: the number of eggs produced (N), the average egg weight (W), and the total egg mass (M) (i.e., N multiplied by W). To measure the S and V values, a novel technique was developed that takes into account the similarity of the quail\u2019s body to an ellipsoid. An analysis of the relationships between productivity indicators allowed us to introduce a new index called the metabolic index, B\u00b7S\/V, based on all three main growth parameters in quails. Using the values of this index, we were then able to judge indirectly the level of quails\u2019 egg productivity. We went on to assess the N, W, and M values, not only depending on the size of the bird\u2019s growth parameters but also according to the degree of their changes during quail growth. These changes were expressed as the slope angles of trend lines describing the growth process data. This approach produced more accurate results for predicting the egg productivity in terms of W and M.<\/jats:p>","DOI":"10.3390\/ani14020258","type":"journal-article","created":{"date-parts":[[2024,1,15]],"date-time":"2024-01-15T04:54:38Z","timestamp":1705294478000},"page":"258","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Metabolic Rate and Egg Production in Japanese Quails Can Be Predicted by Assessing Growth Parameters of Laying Hens"],"prefix":"10.3390","volume":"14","author":[{"given":"Valeriy G.","family":"Narushin","sequence":"first","affiliation":[{"name":"Research Institute for Environment Treatment, 69035 Zaporizhya, Ukraine"},{"name":"Vita-Market Ltd., 69035 Zaporizhya, Ukraine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7191-3550","authenticated-orcid":false,"given":"Natalia A.","family":"Volkova","sequence":"additional","affiliation":[{"name":"L. K. Ernst Federal Research Centre for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anastasia N.","family":"Vetokh","sequence":"additional","affiliation":[{"name":"L. K. Ernst Federal Research Centre for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alan Yu.","family":"Dzhagaev","sequence":"additional","affiliation":[{"name":"L. K. Ernst Federal Research Centre for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ludmila A.","family":"Volkova","sequence":"additional","affiliation":[{"name":"L. K. Ernst Federal Research Centre for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7595-3226","authenticated-orcid":false,"given":"Darren K.","family":"Griffin","sequence":"additional","affiliation":[{"name":"School of Biosciences, University of Kent, Canterbury CT2 7NZ, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3584-4644","authenticated-orcid":false,"given":"Michael N.","family":"Romanov","sequence":"additional","affiliation":[{"name":"L. K. Ernst Federal Research Centre for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia"},{"name":"School of Biosciences, University of Kent, Canterbury CT2 7NZ, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4017-6863","authenticated-orcid":false,"given":"Natalia A.","family":"Zinovieva","sequence":"additional","affiliation":[{"name":"L. K. Ernst Federal Research Centre for Animal Husbandry, Dubrovitsy, Podolsk 142132, Moscow Oblast, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,1,14]]},"reference":[{"key":"ref_1","first-page":"323","article-title":"The challenges of making eggs","volume":"94","author":"Nager","year":"2006","journal-title":"Ardea"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"750","DOI":"10.2307\/4084786","article-title":"Relation of avian egg weight to body weight","volume":"92","author":"Rahn","year":"1975","journal-title":"Auk"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"716","DOI":"10.1086\/376425","article-title":"Plasticity in body composition in breeding birds: What drives the metabolic costs of egg production?","volume":"76","author":"Williams","year":"2003","journal-title":"Physiol. Biochem. 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