Reevaluation of Methionine Requirement Based on Performance and Immune Responses in Broiler Breeder Hens

Autor:	Sayed Abdoullah Hosseini, Mojtaba Zaghari, Houshang Lotfollahian, Mahmoud Shivazad, Hussein Moravaj
Jazyk:	angličtina
Rok vydání:	2012
Předmět:	broiler breeder hens immunity methionine requirement performance Animal culture SF1-1100
Zdroj:	The Journal of Poultry Science, Vol 49, Iss 1, Pp 26-33 (2012)
Druh dokumentu:	article
ISSN:	1346-7395 1349-0486
DOI:	10.2141/jpsa.011021
Popis:	This experiment was conducted to study methionine requirements in broiler breeder hens aged from 26-35 weeks. The treatments were consisted of six levels of methionine (0.2, 0.25, 0.3, 0.35, 0.4 and 0.45%), with five replicates of eight birds (Seven hens and one rooster). The results showed that different levels of methionine had no significant (p>0.05) effects on egg weight, unsettable (double yolk, small size) and settable eggs. The methionine levels significantly (p0.05), but total titer against sheep red blood cell (SRBC) and IgG responses were influenced (p
Databáze:	Directory of Open Access Journals
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