| Titles |
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English :
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Effect of grain content in corn Hybrids on nutritive value of whole plant corn silage
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Arabic :
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تأثير محتوى الحبوب في هجن الذرة على القيمة الغذائية لسيلاج النبات الكامل للذرة
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| Abstract |
Three commercial corn hybrids were used to study the effect of their grain content on the nutritive value of whole plant corn silage. Hybrids were harvested at dough stage of maturity, chopped and ensiled in plastic bags for eight weeks. Nutrients digestibility coefficients and nutritive values of com silages were determined using barki rams. The yield of whole plant corn forage, silage, ear, grain and leave with husk crops per feddan increased significantly (P0.05) affected by grain content in the hybrid. The relative contents of ear and grain increased, stover and stalks decreased significantly (P<0.05) with increasing grain content. The relative content of leaves was not significantly (P>0.05) affected by grain content. The percentage of ensiling weight losses decreased significantly (P<0.05) with increasing grain content.
The contents of DM, OM and NFE of whole plant com forage and silage crops increased, but the contents of CP, CF, EE and ash decreased significantly (P<0.05) with increasing grain content. However, ensiling decreased the contents of DM. OM and NFE and increased the contents of CP, EE, CF and ash. In respect of silage quality, the concentrations of lactic, propionic and valeric acids increased, but the concentrations of TVFA's, acetic, isobutyric, butyric acids and ammonia-N decreased significantly (PO.05).
Whole plant corn silage DM intake by rams and the digestibilities of DM, OM and NFE and subsequently TDN and DE values increased, but the digestibilities of CP and CF and subsequently DCP value decreased significantly (P<0.05) with increasing grain content of com silage. The digestibility of EE was not significantly affected by grain content (P>0.05). The production of TDN, DE and DCP per feddan along with the output of silage yield and economic efficiency increased significantly (P<0.05) with increasing grain content of corn silage. Also, the output per feddan was doubled by 1.18 to 1.36 when corn crop used as silage compared with grain. In addition, the corn crop can be harvested early to clear the land for fall plowing or for second cropping. These results suggest that the optimum level of grain in whole plant corn silage is at least 35% of the DM.
Key words: Whole plant corn silage, quality characteristics, nutritive value and economic evaluation.
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| Publication year |
2004
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| Pages |
1-10
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| Availability location |
معهد بحوث الانتاج الحيوانى
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| Availability number |
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| Organization Name |
Animal Production Research Institute (APRI)
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| City |
القاهرة
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| serial title |
Egyptian Journal Nutrition and Feeds
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| Department |
Animal Nutrition Research Departement
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| Author(s) from ARC |
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| Agris Categories |
Animal feeding
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AGROVOC
TERMS |
Grain.
Lambs.
Maize.
Nutritive value.
Silage.
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| Publication Type |
Journal
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