Comparisons of Corn Stover Silages after Fresh- or Ripe-Corn Harvested: Effects on Digestibility and Rumen Fermentation in Growing Beef Cattle
Both waxy corn stover after fresh- (CF) and ripe-corn (CR) harvested are important byproducts of corn cropping system and have 20 d difference in harvest time. The study aimed to investigate the effects of prolonging harvest time on the nutritive value of corn stover silage by comparing CF with CR s...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-05-01
|
| Series: | Animals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-2615/12/10/1248 |
| _version_ | 1797502100077281280 |
|---|---|
| author | Min Zhang Rong Wang Tingting Wu Yingbai Yang Zhixiong He Zhiyuan Ma Zhiliang Tan Bo Lin Min Wang |
| author_facet | Min Zhang Rong Wang Tingting Wu Yingbai Yang Zhixiong He Zhiyuan Ma Zhiliang Tan Bo Lin Min Wang |
| author_sort | Min Zhang |
| collection | DOAJ |
| description | Both waxy corn stover after fresh- (CF) and ripe-corn (CR) harvested are important byproducts of corn cropping system and have 20 d difference in harvest time. The study aimed to investigate the effects of prolonging harvest time on the nutritive value of corn stover silage by comparing CF with CR silages. In vitro ruminal experiment was firstly performed to investigate substrate degradation and fermentation of CF and CR silages. The CR diet was formulated by replacing 50% forage of CF silage with CR silage on a dry matter (DM) basis. Fourteen crossbred steers (Simmental × Limousin × local Chinese) aged 13 months with an average weight of 318.1 ± 37.1 kg were selected and randomly allocated into two dietary treatment groups. Although the CR silage had greater DM and fiber contents than CF silage, it did not alter in vitro degradation (<i>p</i> > 0.05), but with lower molar percentage of propionate and acetate to propionate ratio (<i>p</i> < 0.05). The cattle fed CR diet had a higher DM intake and lower fiber digestibility with reduction in 18S rRNA gene copies of protozoa and fungi and 16S rRNA gene copies of <i>Fibrobacter succinogenes</i> (<i>p</i> < 0.05). Further 16S rRNA gene amplicon analysis indicated a similar diversity of bacteria community between CR and CF treatments (<i>p</i> > 0.05). Few differences were observed in the abundance of genera larger than 1% (<i>p</i> > 0.05), except for the reduction in abundance of genera <i>Ruminococcaceae</i>_NK4A214_group in CR treatment (<i>p</i> < 0.05). In summary, prolonging 20 d harvest time of corn stover silage increases the forage fiber and DM content, which promotes feed intake with decreased fiber degradation, although rumen fermentation and growth performance are not changed in growing beef cattle. |
| first_indexed | 2024-03-10T03:28:03Z |
| format | Article |
| id | doaj.art-260e9aec240949c4918fbe9a871aa810 |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-10T03:28:03Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-260e9aec240949c4918fbe9a871aa8102023-11-23T09:46:13ZengMDPI AGAnimals2076-26152022-05-011210124810.3390/ani12101248Comparisons of Corn Stover Silages after Fresh- or Ripe-Corn Harvested: Effects on Digestibility and Rumen Fermentation in Growing Beef CattleMin Zhang0Rong Wang1Tingting Wu2Yingbai Yang3Zhixiong He4Zhiyuan Ma5Zhiliang Tan6Bo Lin7Min Wang8College of Animal Science and Technology, Guangxi University, Nanning 530004, ChinaKey Laboratory for Agro-Ecological Processes in Subtropical Region/National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, ChinaCollege of Animal Science and Technology, Guangxi University, Nanning 530004, ChinaCollege of Animal Science and Technology, Guangxi University, Nanning 530004, ChinaKey Laboratory for Agro-Ecological Processes in Subtropical Region/National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, ChinaKey Laboratory for Agro-Ecological Processes in Subtropical Region/National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, ChinaKey Laboratory for Agro-Ecological Processes in Subtropical Region/National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, ChinaCollege of Animal Science and Technology, Guangxi University, Nanning 530004, ChinaKey Laboratory for Agro-Ecological Processes in Subtropical Region/National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, ChinaBoth waxy corn stover after fresh- (CF) and ripe-corn (CR) harvested are important byproducts of corn cropping system and have 20 d difference in harvest time. The study aimed to investigate the effects of prolonging harvest time on the nutritive value of corn stover silage by comparing CF with CR silages. In vitro ruminal experiment was firstly performed to investigate substrate degradation and fermentation of CF and CR silages. The CR diet was formulated by replacing 50% forage of CF silage with CR silage on a dry matter (DM) basis. Fourteen crossbred steers (Simmental × Limousin × local Chinese) aged 13 months with an average weight of 318.1 ± 37.1 kg were selected and randomly allocated into two dietary treatment groups. Although the CR silage had greater DM and fiber contents than CF silage, it did not alter in vitro degradation (<i>p</i> > 0.05), but with lower molar percentage of propionate and acetate to propionate ratio (<i>p</i> < 0.05). The cattle fed CR diet had a higher DM intake and lower fiber digestibility with reduction in 18S rRNA gene copies of protozoa and fungi and 16S rRNA gene copies of <i>Fibrobacter succinogenes</i> (<i>p</i> < 0.05). Further 16S rRNA gene amplicon analysis indicated a similar diversity of bacteria community between CR and CF treatments (<i>p</i> > 0.05). Few differences were observed in the abundance of genera larger than 1% (<i>p</i> > 0.05), except for the reduction in abundance of genera <i>Ruminococcaceae</i>_NK4A214_group in CR treatment (<i>p</i> < 0.05). In summary, prolonging 20 d harvest time of corn stover silage increases the forage fiber and DM content, which promotes feed intake with decreased fiber degradation, although rumen fermentation and growth performance are not changed in growing beef cattle.https://www.mdpi.com/2076-2615/12/10/1248harvest timefiber digestibilitymicrobiotarumen fermentationutilization of agricultural byproducts |
| spellingShingle | Min Zhang Rong Wang Tingting Wu Yingbai Yang Zhixiong He Zhiyuan Ma Zhiliang Tan Bo Lin Min Wang Comparisons of Corn Stover Silages after Fresh- or Ripe-Corn Harvested: Effects on Digestibility and Rumen Fermentation in Growing Beef Cattle Animals harvest time fiber digestibility microbiota rumen fermentation utilization of agricultural byproducts |
| title | Comparisons of Corn Stover Silages after Fresh- or Ripe-Corn Harvested: Effects on Digestibility and Rumen Fermentation in Growing Beef Cattle |
| title_full | Comparisons of Corn Stover Silages after Fresh- or Ripe-Corn Harvested: Effects on Digestibility and Rumen Fermentation in Growing Beef Cattle |
| title_fullStr | Comparisons of Corn Stover Silages after Fresh- or Ripe-Corn Harvested: Effects on Digestibility and Rumen Fermentation in Growing Beef Cattle |
| title_full_unstemmed | Comparisons of Corn Stover Silages after Fresh- or Ripe-Corn Harvested: Effects on Digestibility and Rumen Fermentation in Growing Beef Cattle |
| title_short | Comparisons of Corn Stover Silages after Fresh- or Ripe-Corn Harvested: Effects on Digestibility and Rumen Fermentation in Growing Beef Cattle |
| title_sort | comparisons of corn stover silages after fresh or ripe corn harvested effects on digestibility and rumen fermentation in growing beef cattle |
| topic | harvest time fiber digestibility microbiota rumen fermentation utilization of agricultural byproducts |
| url | https://www.mdpi.com/2076-2615/12/10/1248 |
| work_keys_str_mv | AT minzhang comparisonsofcornstoversilagesafterfreshorripecornharvestedeffectsondigestibilityandrumenfermentationingrowingbeefcattle AT rongwang comparisonsofcornstoversilagesafterfreshorripecornharvestedeffectsondigestibilityandrumenfermentationingrowingbeefcattle AT tingtingwu comparisonsofcornstoversilagesafterfreshorripecornharvestedeffectsondigestibilityandrumenfermentationingrowingbeefcattle AT yingbaiyang comparisonsofcornstoversilagesafterfreshorripecornharvestedeffectsondigestibilityandrumenfermentationingrowingbeefcattle AT zhixionghe comparisonsofcornstoversilagesafterfreshorripecornharvestedeffectsondigestibilityandrumenfermentationingrowingbeefcattle AT zhiyuanma comparisonsofcornstoversilagesafterfreshorripecornharvestedeffectsondigestibilityandrumenfermentationingrowingbeefcattle AT zhiliangtan comparisonsofcornstoversilagesafterfreshorripecornharvestedeffectsondigestibilityandrumenfermentationingrowingbeefcattle AT bolin comparisonsofcornstoversilagesafterfreshorripecornharvestedeffectsondigestibilityandrumenfermentationingrowingbeefcattle AT minwang comparisonsofcornstoversilagesafterfreshorripecornharvestedeffectsondigestibilityandrumenfermentationingrowingbeefcattle |