Salinity Reduces the Forage Quality of Forage Kochia A Halophytic Chenopodiaceae Shrub
(چکیده مقاله) :
Abstract :
Forage kochia (Bassia prostrata [L.] A.J. Scott) is a perennial, halophytic Chenopodiaceae shrub adapted to
semiarid rangelands and steppes. It is noted for its ability to produce edible forage in saline environments,
but the effect of salinity on its nutritive value has not been determined. Therefore, this study
evaluated the dose-response of increasing salinity on the forage quality of forage kochia and Gardner’s
saltbush (Atriplex gardneri [Moq.] D. Dietr., a chenopod forage shrub indigenous to the United States).
Individual plants were evaluated in hydroponics for 28 days at 0, 150, 300, and 600 mM NaCl. Salt from
accumulated ions, minerals, and forage nutritive value were determined using ground shoot samples.
Analysis of forage nutritive value is problematic in plants with high salt concentrations, so neutral
detergent fiber (NDF) and in vitro true digestibility (IVTD) were also predicted on an ash-corrected dry
matter (DM) basis (NDFcorrected and IVTDcorrected). Forage kochia exhibited a dose-response for salt
concentration, IVTDcorrected, and crude protein (CP) as salinity increased. Salt concentrations increased to
19% of DM at 600 mM NaCl, which may reduce voluntary intake by ruminants grazing forage kochia.
Results indicated that uncorrected IVTD estimates were inflated as forage kochia IVTDcorrected decreased
from 65% to 56% with the major change between 300 and 600 mM NaCl. Crude protein did not differ
between two forage kochia cultivars but decreased from 26% to 15% between 0 and 600 mM NaCl,
whereas Gardner’s saltbush CP decreased by only five percentage poin
semiarid rangelands and steppes. It is noted for its ability to produce edible forage in saline environments,
but the effect of salinity on its nutritive value has not been determined. Therefore, this study
evaluated the dose-response of increasing salinity on the forage quality of forage kochia and Gardner’s
saltbush (Atriplex gardneri [Moq.] D. Dietr., a chenopod forage shrub indigenous to the United States).
Individual plants were evaluated in hydroponics for 28 days at 0, 150, 300, and 600 mM NaCl. Salt from
accumulated ions, minerals, and forage nutritive value were determined using ground shoot samples.
Analysis of forage nutritive value is problematic in plants with high salt concentrations, so neutral
detergent fiber (NDF) and in vitro true digestibility (IVTD) were also predicted on an ash-corrected dry
matter (DM) basis (NDFcorrected and IVTDcorrected). Forage kochia exhibited a dose-response for salt
concentration, IVTDcorrected, and crude protein (CP) as salinity increased. Salt concentrations increased to
19% of DM at 600 mM NaCl, which may reduce voluntary intake by ruminants grazing forage kochia.
Results indicated that uncorrected IVTD estimates were inflated as forage kochia IVTDcorrected decreased
from 65% to 56% with the major change between 300 and 600 mM NaCl. Crude protein did not differ
between two forage kochia cultivars but decreased from 26% to 15% between 0 and 600 mM NaCl,
whereas Gardner’s saltbush CP decreased by only five percentage poin
(توضیحات تکمیلی) :
(توضیحات تکمیلی) :
Description :
مقاله ISI انگلیسی اصلی
سال انتشار: 2020
فایل ISI انگلیسی اصلی ، با فرمت Pdf
تعداد صفحات فایل ISI انگلیسی اصلی: 10 صفحه
سال انتشار: 2020
فایل ISI انگلیسی اصلی ، با فرمت Pdf
تعداد صفحات فایل ISI انگلیسی اصلی: 10 صفحه
Authors / Descriptions(نویسندگان/توضیحات): مقاله ISI سال انتشار2020 \ B.L. Waldron a, *, J.K. Sagers b, M.D. Peel a, C.W. Rigby a, B. Bugbee b, J.E. Creech
Sent date(تاریخ ارسال) :
1399/04/20 | 7/10/2020
Number of visits(تعداد بازدید):
562
Key words (کلمات کلیدی):
digestibility , forage nutritive value , halogeton , salinity , saltbush
Number of pages(تعداد صفحات) :
10
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