desempenho de novilhas leiteiras alimentadas com silagem de capim-elefante com adição de diferentes níveis de bagaço de mandioca performance of dairy heifers fed on elephantgrass silage added with different levels of cassava bagasse

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ID: 255341
2006
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Abstract
Avaliou-se o efeito da adição de diferentes níveis (5; 10; 15 e 20%) de bagaço de mandioca na ensilagem do capim-elefante (Pennisetum purpureum, Schum) sobre o desempenho de novilhas leiteiras. Utilizaram-se 16 novilhas ¾ Holandês × Zebu, com idade média de 15 meses e peso vivo inicial de 144kg, com quatro repetições por tratamento. O experimento constou de 14 dias de adaptação, quando as novilhas receberam apenas silagem, e 56 dias de período experimental. Realizaram-se pesagens e tomadas as medidas da altura de cernelha e da circunferência torácica, após jejum de 16 horas, no início do experimento e no 28º e 56º dias. Os consumos médios diários de matéria seca (MS) e proteína bruta não diferiram entre tratamentos (P>0,05). Os consumos médios de fibra em detergente neutro e fibra em detergente ácido apresentaram comportamento linear decrescente (P<0,05). O desempenho foi verificado por meio das médias do peso vivo inicial, do peso vivo final, do ganho de peso médio diário, do aumento de perímetro torácico, do aumento de altura de cernelha e da conversão alimentar da MS. Não se observou influência dos tratamentos (P>0,05) sobre as características estudadas.
The effect of cassava bagasse addition levels (5, 10, 15 and 20%) to elephantgrass silage on dairy heifers performance was evaluated. Sixteen ¾ Holstein x Zebu heifers with 15 months of age and 144kg of initial body weight were used in a completely randomized block design with four replicates and four treatments. The experiment was carried out for 56 days after and adaptation period of 14 days in which the heifers were fed the respective treatment diets. Weight, withers height and thoracic circumference were recorded often 16 hours fasting at the beginning of the experiment and at days 28 and 56. No differences between treatments were observed for day mother (DM) and crude protein daily intake. The neutral detergent fiber and acid detergent fiber showed a linear reduction behavior. No treatment effects were observed for final body weight, daily weight gain, thoracic perimeter, withers height and DM feed efficiency.
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silva2006arquivodesempenho Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;F.F. Silva;M.S.M.A. Aguiar;C.M. Veloso;A.J.V. Pires;P. Bonomo;G.S. Dutra;V.S. Almeida;G.G.P. Carvalho;R.R. Silva;A.M. Dias;L.C.V. Ítavo
Journal Environmental research
Year 2006
DOI
10.1590/S0102-09352006000200009
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000200009
Keywords
weight gain intake dairy heifer residue consumo ganho de peso by productanimal culture

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