Abstract
The production of artificial planted forage is important for the development of animal husbandry in the Qinghai–-Tibet Plateau, and oat forage is one of the main artificial planted forages in the area. However, the suitable oat varieties for harvesting and preparing silage feed in this region are still unclear. To investigate suitable oat forage varieties for silage production and the potential feeding value of different oat forage varieties, 16 oat forage varieties planted in Qinghai Province were selected in this experiment. These oat forages were subjected to two treatments: a group with no inoculants (CK) and a group with self-selected lactic acid bacteria (LAB) inoculants (IN). After 90 days of ensiling, silage quality and in vitro digestibility of the 16 oat forage varieties were determined. The results showed that all oat forage varieties ferment well after ensiling (pH < 4), the CK group had a silage pH range of 3.62–3.95, and the IN group had a silage pH range of 3.68–3.83. Tianyan No.1, Qingtian No.2, and Tianyan No.3 were in the top three in RFV and RFQ rankings in the CK group, while Qinghai 444, Tianyan No.1, and Tianyan No.3 were in the lead in GI rankings. Tianyan No.1, Qingtian No.2, and Everleaf 126 were in the lead in RFV and RFQ rankings in the IN group, while Qinghai 444, Titan, and Tianyan No.1 were in the top three in GI rankings. The dry matter digestibility and 72 h cumulative gas production of the IN group were higher than that of the CK group (p < 0.05). Based on principal component analysis and membership function comprehensive evaluation, Tianyan No.1, Qinghai 444, and Tianyan No.3 ranked the top three, demonstrating that these three oat forage varieties are suitable for silage processing in the Qinghai–Tibet Plateau region.
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Claims 11
Claim · model-written summary
All oat varieties fermented with pH below 4.
Verbatim
e0“all oat forage varieties ferment well after ensiling (pH < 4)”
Claim · model-written summary
Uninoculated oat silage pH ranged from 3.62 to 3.95.
Verbatim
e0“the CK group had a silage pH range of 3.62–3.95”
t0“oat forage varieties”
Claim · model-written summary
Inoculated oat silage pH ranged from 3.68 to 3.83.
Verbatim
e0“the IN group had a silage pH range of 3.68–3.83”
t0“oat forage varieties”
Claim · model-written summary
Tianyan No.1, Qingtian No.2 and Tianyan No.3 led RFV and RFQ in CK.
Verbatim
e0“Tianyan No.1, Qingtian No.2, and Tianyan No.3 were in the top three in RFV and RFQ rankings in the CK group”
t0“oat forage varieties”
Claim · model-written summary
Qinghai 444, Tianyan No.1 and Tianyan No.3 led GI in CK.
Verbatim
e0“Qinghai 444, Tianyan No.1, and Tianyan No.3 were in the lead in GI rankings”
t0“oat forage varieties”
Claim · model-written summary
Tianyan No.1, Qingtian No.2 and Everleaf 126 led RFV and RFQ in IN.
Verbatim
e0“Tianyan No.1, Qingtian No.2, and Everleaf 126 were in the lead in RFV and RFQ rankings in the IN group”
t0“oat forage varieties”
Claim · model-written summary
Qinghai 444, Titan and Tianyan No.1 led GI in IN.
Verbatim
e0“Qinghai 444, Titan, and Tianyan No.1 were in the top three in GI rankings”
t0“oat forage varieties”
Claim · model-written summary
Inoculation increased dry matter digestibility versus CK.
Verbatim
e0“The dry matter digestibility and 72 h cumulative gas production of the IN group were higher than that of the CK group (p < 0.05).”
t0“oat forage varieties”
Claim · model-written summary
Inoculation increased 72 h cumulative gas production versus CK.
Verbatim
e0“The dry matter digestibility and 72 h cumulative gas production of the IN group were higher than that of the CK group (p < 0.05).”
t0“oat forage varieties”
Claim · model-written summary
Tianyan No.1, Qinghai 444 and Tianyan No.3 ranked highest overall.
Verbatim
e0“Tianyan No.1, Qinghai 444, and Tianyan No.3 ranked the top three”
t0“oat forage varieties”
Claim · model-written summary
The three highest ranked varieties were deemed suitable for silage processing in the region.
Verbatim
e0“Tianyan No.1, Qinghai 444, and Tianyan No.3 ranked the top three, demonstrating that these three oat forage varieties are suitable for silage processing in the Qinghai–Tibet Plateau region.”
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