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Descripción
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| A total of 960 Lohmann Brown laying hens was used to study the effect of the main cereal of the diet and mean particle size (MPS) of the cereal on productive performance and egg quality from 20 to 48 wk of age. The experimental design was completely at random with 6 treatments arranged factorially with 2 cereals (corn vs. hard wheat) and 3 MPS of the cereal (hammer milled to pass through a 6-, 8- or 10-mm screen). Each treatment was replicated 8 times (20 hens per replicate). All diets were formulated to be isonutritive and contained 50% of either corn or hard wheat. Productive traits were recorded every 4 wk and egg quality was measured at 48 wk of age. The only significant effect detected was for feed intake (P < 0.05) that was greater for hens fed coarse ground cereals (10-mm) than for hens fed medium and fine ground cereals (8- or 6-mm). Also, hens fed corn had higher proportion of large and extra large eggs (> 63 g) from 45 to 48 weeks of age than hens fed hard wheat (84.5 vs. 79.4%; P < 0.05) but no differences were detected in any other period. Dietary treatment did not affect the percentage of broken and shell-less and dirty eggs, percentage of shell, yolk, or albumen of the egg, or albumen and Shell quality. We conclude that neither type of cereal nor MPS affected productive performance or egg quality of young brown hens, except for feed intake that increased with the coarser particle size. | |
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Internacional
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Si |
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JCR del ISI
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Si |
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Título de la revista
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POULTRY SCIENCE |
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ISSN
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0032-5791 |
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Factor de impacto JCR
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1,668 |
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Información de impacto
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Volumen
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88 |
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DOI
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Número de revista
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0 |
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Desde la página
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608 |
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Hasta la página
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614 |
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Mes
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ENERO |
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Ranking
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