Effects of the main cereal and type of fat of the diet on productive performance of brown egg-laying hens from twenty-two to fifty-four weeks of age | Efecto del cereal principal y el tipo de grasa en la dieta sobre los parámetros productivos en gallinas rubias en el periodo productivo de 22-54 semanas de vida
2011
Pérez Bonilla, A. | Frikha, M., Universidad Politécnica de Madrid (España) | Jabbour, C., Universidad Politécnica de Madrid (España) | Mirzaie, S., Universidad Politécnica de Madrid (España) | Irandoust, H., Universidad Politécnica de Madrid (España) | García, J. | Mateos, G.G., Universidad Politécnica de Madrid (España)
The influence of the main cereal and type of fat in the diet on productive performance and egg quality from 22 to 54 weeks of age was studied in 756 brown-egg laying hens. The experiment was conducted as a completely randomized design with 9 treatments arranged factorially with 3 cereals (dented corn, soft wheat, and barley) and 3 types of fat (soy oil, acidulated vegetable soapstocks, and lard). Each treatment was replicated 4 times (21 hens per replicate). All diets were formulated to have similar nutrient content except for LIN that ranged from 0.76 to 3.4% depending on the combination of cereal and fat source used. Productive performance was recorded every 4-wk period. For the entire experimental period egg production and egg weight were higher (P< 0.05) for hens fed corn than for hens fed wheat, with hens fed barley being intermediate. It is concluded that the 3 cereals and the 3 fat sources tested can be used indistinctly in diets for laying hens provided that the final diet satisfy the linoleic acid requirements of laying hens.
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