Potentials of ZP maize hybrids for silage production
2016
Semenčenko, Valentina (Maize Research Institute Zemun Polje, Belgrade-Zemun (Serbia)) | Milašinović-Šeremešić, Marija (Maize Research Institute Zemun Polje, Belgrade-Zemun (Serbia)) | Radosavljević, Milica (Maize Research Institute Zemun Polje, Belgrade-Zemun (Serbia)) | Terzić, Dušanka (Maize Research Institute Zemun Polje, Belgrade-Zemun (Serbia)) | Srdić, Jelena (Maize Research Institute Zemun Polje, Belgrade-Zemun (Serbia)) | Filipović, Milomir (Maize Research Institute Zemun Polje, Belgrade-Zemun (Serbia))
Maize (Zea Mays L.) silage is a feed source that provides majority of forage fibre and energy in ruminant diets. Many factors have to be taken into consideration to get the most benefit from this valuable feed. Hybrid selection directed towards high whole plant yield and excellent nutritional characteristics is of great importance for the quality of maize silage. In addition to high whole plant yield which is a prerequisite for promising silage maize hybrids, the most important parameters that can influence maize silage quality include lignocellulose fibres content and dry matter (DM) digestibility. The aim of this study was to observe quality parameters of maize hybrids in order to determine their suitability for silage production. The whole plants of nine maize hybrids developed at the Maize Research Institute, Zemun Polje, were used in this study. Forage yield, dry matter yield of whole plant and ear as well as the yield of the digestible DM of the maize hybrids were investigated and ranged from: 57.0 – 76.2 t∙ha-1; 19.1 – 29.7 t∙ha-1; 9.4 – 17.9 t∙ha-1 and 12.5 – 19.9 t∙ha-1, respectively. The content of NDF, ADF, ADL, hemicellulose and cellulose of the whole maize plant ranged between: 40.00 – 49.22%; 18.55 – 24.67%; 1.42 – 2.16%; 21.01 – 24.55%; 16.92 – 22.69%, respectively. In vitro dry matter digestibility of the investigated maize hybrids varied from 62.31% to 69.37%, while NDFD (NDF digestibility) and dNDF (DM that is digestible NDF) ranged from 13.49 to 29.22% and from 5.52 to 14.38%, respectively. According to the results obtained in this study significant differences regarding NDF, ADF, hemicellulose and cellulose content were detected, while ADL content did not differ much among hybrids. Among the investigated hybrids the highest value of dry matter digestibility, low NDF and ADL content were obtained by hybrid ZP 560, which makes it the most promising candidate for high quality silage production
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