In situ degrability of dry matter of sheep fed with corn silage with or without Bt gene / Frações de degradabilidade in situ da MS em ovinos alimentados com silagem de milho com e sem o gene Bt
Memari Trava, Camila; Sartori Bueno, Mauro; Balieiro, Geraldo.
B. Indústr. Anim.;
69: 7-7, 2012.
Artigo
em Português
| VETINDEX
| ID: vti-467772
Resumo
Silage corn is a food widely used, composing the bulk of feed for ruminants, because its present high nutritional value. Since the release by CNTBio seeds of modified genetically corn, many of it began to use transgenic silage corn, which was inserted into genetic code the Bt (Bacillus thuringiensis) gene that expresses a toxic protein to caterpillar pests of corn, so occurs the reduction of production costs and pesticide use. Due to rapid expansion of transgenic maize and your wide use in animal feed by producers, the aim of this study was to evaluate the degrability in situ in animal rumen, in order to estimate the nutritional value of silage corn with and without the Bt gene. The experiment was conducted at the Institute of Animal Science Nova Odessa-SP. Were used four rumen fistulated sheep housed in individual pens for 56 days, including four periods. The animals were fed with silage with two varieties of plant corn to silage - DKB and AG, and their isogenic counterparts with the Bt gene, comprising four treatments. The degradability determination of dry matter (DM) digestibility of silage corn treatments was determined by means of nylon bag in situ. After removal, the bags were washed and incubated, then placed in forced-circulation at 55C to constant weight to determine the DM concentration. Data from in situ degradation of DM was adjusted in the mathematical model propO artigo não apresenta resumo em português.
Biblioteca responsável:
BR68.1
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