In Vitro Study of the Effect of Ensiling Length and Processing on the Nutritive Value of Maize Silages
The effect of the ensiling length (3, 6, or 9 months), and the processing by dehydration (D) or dehydration and pelleting (P) with respect to the fresh silages (F) were studied in vitro on three maize cultivars in three incubation runs to study the effect of these factors on the nutritive value of m...
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MDPI AG
2023-01-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/13/3/344 |
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| author | Ana Gordo Belén Hernando Jesús Artajona Manuel Fondevila |
| author_facet | Ana Gordo Belén Hernando Jesús Artajona Manuel Fondevila |
| author_sort | Ana Gordo |
| collection | DOAJ |
| description | The effect of the ensiling length (3, 6, or 9 months), and the processing by dehydration (D) or dehydration and pelleting (P) with respect to the fresh silages (F) were studied in vitro on three maize cultivars in three incubation runs to study the effect of these factors on the nutritive value of maize silage. Gas production pattern, in vitro true digestibility (IVTD), methane concentration (6 and 12 h), ammonia, and volatile fatty acid concentration (VFA) at 12 h were measured. The moisture and pH of F averaged 676 g/kg and 4.09, respectively, and were not affected by the ensiling length, but moisture was reduced, and the pH increased in D and P with respect to F (<i>p</i> < 0.05). The ensiling length did not affect the chemical composition, but differences among the processing forms were detected in a higher acid detergent insoluble nitrogen (ADIN) proportion in P than D, and D than F (<i>p</i> < 0.001). Silages opened at 9 months showed the lowest gas production (<i>p</i> < 0.05), and those that opened after 3 months showed the highest IVTD. The effects of processing on nutrient utilisation only manifested on 3 month silages, with the volume of gas production and IVTD being lower in D than F. However, processing tended (<i>p</i> = 0.064) to reduce the methane proportion at 12 h, indicating both a more efficient fermentation and a lower potential of greenhouse gas emissions compared to the fresh silages. Extending the length of ensiling to 9 months reduced the fermentation of maize silage. The processing increased the dry matter and buffered the feed as well as contributed to an increase in fermentation in 3 month silages. |
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| issn | 2076-2615 |
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| last_indexed | 2024-03-11T09:55:25Z |
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| series | Animals |
| spelling | doaj.art-d4b324207b9c451ba72d5e288977469a2023-11-16T15:59:33ZengMDPI AGAnimals2076-26152023-01-0113334410.3390/ani13030344In Vitro Study of the Effect of Ensiling Length and Processing on the Nutritive Value of Maize SilagesAna Gordo0Belén Hernando1Jesús Artajona2Manuel Fondevila3Departamento de Producción Animal y Ciencia de los Alimentos, Instituto Agroalimentario de Aragón (IA2), Universidad de Zaragoza-CITA, M. Servet 177, 50013 Zaragoza, SpainDepartamento de Producción Animal y Ciencia de los Alimentos, Instituto Agroalimentario de Aragón (IA2), Universidad de Zaragoza-CITA, M. Servet 177, 50013 Zaragoza, SpainDepartamento de Producción Animal y Ciencia de los Alimentos, Instituto Agroalimentario de Aragón (IA2), Universidad de Zaragoza-CITA, M. Servet 177, 50013 Zaragoza, SpainDepartamento de Producción Animal y Ciencia de los Alimentos, Instituto Agroalimentario de Aragón (IA2), Universidad de Zaragoza-CITA, M. Servet 177, 50013 Zaragoza, SpainThe effect of the ensiling length (3, 6, or 9 months), and the processing by dehydration (D) or dehydration and pelleting (P) with respect to the fresh silages (F) were studied in vitro on three maize cultivars in three incubation runs to study the effect of these factors on the nutritive value of maize silage. Gas production pattern, in vitro true digestibility (IVTD), methane concentration (6 and 12 h), ammonia, and volatile fatty acid concentration (VFA) at 12 h were measured. The moisture and pH of F averaged 676 g/kg and 4.09, respectively, and were not affected by the ensiling length, but moisture was reduced, and the pH increased in D and P with respect to F (<i>p</i> < 0.05). The ensiling length did not affect the chemical composition, but differences among the processing forms were detected in a higher acid detergent insoluble nitrogen (ADIN) proportion in P than D, and D than F (<i>p</i> < 0.001). Silages opened at 9 months showed the lowest gas production (<i>p</i> < 0.05), and those that opened after 3 months showed the highest IVTD. The effects of processing on nutrient utilisation only manifested on 3 month silages, with the volume of gas production and IVTD being lower in D than F. However, processing tended (<i>p</i> = 0.064) to reduce the methane proportion at 12 h, indicating both a more efficient fermentation and a lower potential of greenhouse gas emissions compared to the fresh silages. Extending the length of ensiling to 9 months reduced the fermentation of maize silage. The processing increased the dry matter and buffered the feed as well as contributed to an increase in fermentation in 3 month silages.https://www.mdpi.com/2076-2615/13/3/344time of ensilingdehydrationpelletingin vitro fermentation |
| spellingShingle | Ana Gordo Belén Hernando Jesús Artajona Manuel Fondevila In Vitro Study of the Effect of Ensiling Length and Processing on the Nutritive Value of Maize Silages Animals time of ensiling dehydration pelleting in vitro fermentation |
| title | In Vitro Study of the Effect of Ensiling Length and Processing on the Nutritive Value of Maize Silages |
| title_full | In Vitro Study of the Effect of Ensiling Length and Processing on the Nutritive Value of Maize Silages |
| title_fullStr | In Vitro Study of the Effect of Ensiling Length and Processing on the Nutritive Value of Maize Silages |
| title_full_unstemmed | In Vitro Study of the Effect of Ensiling Length and Processing on the Nutritive Value of Maize Silages |
| title_short | In Vitro Study of the Effect of Ensiling Length and Processing on the Nutritive Value of Maize Silages |
| title_sort | in vitro study of the effect of ensiling length and processing on the nutritive value of maize silages |
| topic | time of ensiling dehydration pelleting in vitro fermentation |
| url | https://www.mdpi.com/2076-2615/13/3/344 |
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