Digestible lysine levels in diets for laying Japanese quails
| Autor: | Cleverson Luís Nascimento Ribeiro, Sergio Luiz de Toledo Barreto, Renata de Souza Reis, Jorge Cunha Lima Muniz, Juarez Lopes Donzele, Paulo Cezar Gomes, José Geraldo de Vargas Júnior, Luiz Fernando Teixeira Albino |
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| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Revista Brasileira de Zootecnia, Vol 42, Iss 7, Pp 489-495 (2013) |
| Druh dokumentu: | article |
| ISSN: | 1806-9290 1516-3598 |
| DOI: | 10.1590/S1516-35982013000700005 |
| Popis: | The objective of this study was to estimate the digestible lysine requirement of Japanese quails in the egg-laying phase. A total of 336 female Japanese quails (Coturnix coturnix japonica) of average initial age of 207 days were distributed in a completely randomized experimental design, composed of 6 treatments (lysine levels) with 7 replicates and 8 birds per experimental unit, with duration of 84 days. Experimental diets were formulated from a basal diet, with corn and soybean meal, with 2.800 kcal ME/kg and 203.70 g/kg crude protein, showing levels of 9.50; 10.00; 10.50; 11.00; 11.50; and 12.00 g/kg digestible lysine; diets remained isoprotein and isocaloric. The following variables were studied: feed intake (FI); lysine intake (LI); egg production per bird per day (EPBD); egg production per bird housed (EPBH); production of marketable eggs (PME); egg weight (EW); egg mass (EM); utilization efficiency of lysine for egg mass production (UELEM); feed conversion per mass (FCEM); feed conversion per dozen eggs (FCDZ); bird availability (BA); percentages of yolk (Y), albumen (A) and shell (S); specific egg weight (SW); nitrogen ingested (NI); nitrogen excreted (NE); and nitrogen balance (NB). Significant effect was only observed for LI, EW, EM, UELEM, FCEM, Y, A and SW. The digestible lysine level estimated in diets for laying Japanese quails is 11.20 g digestible lysine/kg diet, corresponding to an average daily intake of 272.23 mg lysine. |
| Databáze: | Directory of Open Access Journals |
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