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| Freitas,Ednardo Rodrigues; Braz,Nádia de Melo; Watanabe,Pedro Henrique; Cruz,Carlos Eduardo Braga; Nascimento,Germano Augusto Jerônimo do; Bezerra,Roseane Madeira. |
| Feeding management of laying hens has been focused on the direct influence of nutrient intake on weight gain, especially at growing phase. This study evaluates nutrient digestibility, performance, development of the digestive tract, body composition, and bone quality of two strains of laying hens fed with different levels of neutral detergent fiber (NDF) during the growing phase from the 7th to the 12th week of age. A total of 1,296 birds were distributed in a completely randomized design in a 2 x 3 factorial arrangement (two strains x three levels of NDF) with four replicates of 54 birds per treatment. Semi-heavy (Hy Line Brown) and light-strain (Lohman LSL) pullets were allotted to dietary treatments consisting of 14.50, 16.50, and 18.50% NDF. An... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth; Insoluble fiber; Neutral detergent fiber; Strain. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000200010 |
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| Fraga,A.L.; Thomaz,M.C.; Kronka,R.N.; Budiño,F.E.L.; Huaynate,R.A.R.; Scandolera,A.J.; Ruiz,U.S.; Nadai,A.. |
| A total of 50 barrows were used to evaluate qualitative feed restriction on digestibility of dietary components, weight of organs of digestive tract, and composition and production of feces. Five experimental diets, with increasing levels of qualitative feed restriction of 0, 5, 10, 15, and 20% were used. There was linear reduction (P<0.001) of all digestibility coefficients on the levels of qualitative feed restriction, except for acid detergent fiber, which presented a quadratic response (P<0.05). Contents of total solids (P<0.01), volatile solids (P<0.05), and total minerals (P<0.001) in the feces augmented with increasing levels of qualitative feed restriction, whereas the levels of K (P<0.05), Cu (P<0.01), N, P, Na, Ca, Mg, Fe,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Swine; Fecal composition; Energy dilution; Mineral excretion; Fermentable fiber; Insoluble fiber. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352009000600015 |
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