Changes in Forage Quantity and Quality With Continued Late-Summer Cattle Grazing a Riparian Pasture in Eastern Oregon of United States

Darambazar, Enkhjargal; DelCurto, Timothy; Damiran, Daalkhaijav

doi:10.5539/sar.v2n4p64

Cited by 8 publications

(5 citation statements)

References 24 publications

(46 reference statements)

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“…In our study, graminoids contained lower CP and digestible DM, and higher cell wall carbohydrates (ADF and NDF) compared to forbs, shrubs, and lichen. These results concur with the existing literature (Holechek & Vavra, 1983;Darambazar, DelCurto, & Damiran, 2013) which suggested shrubs retain more CP than mature graminoids or forbs in late-summer. Also, the results of the current study were in agreement with others (Holechek & Vavra, 1982;Findholt et al, 2004;DelCurto et al, 2005) who suggested that cattle and elk shift their diets to more forbs and shrubs to maintain their rate of intake when graminoids availability and/or palatability decline.…”

Section: Discussionsupporting

confidence: 93%

The Effects of Previous Grazing on the Subsequent Nutrient Supply of Ungulates Grazing Late-summer Mixed-Conifer Rangelands

Damiran¹,

DelCurto²,

Findholt³

et al. 2019

SAR

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Ecological, societal, and political discussions abound regarding intra- and inter-specific competition for nutrients among wild and domestic ungulates grazing shared forested rangelands in summer as cascading effects of prior grazing drive subsequent grazing patterns and nutrient intake. Our objective was to determine diet quality and quantity of cattle (Bos taurus), mule deer (Odocoileus hemionus hemionus; deer), and elk (Cervus elaphus nelsoni) in late-summer in response to early-summer forage utilization by cattle and elk in two consecutive years. Four 2.25 ha enclosures were constructed in previously logged mixed-conifer rangelands dominated by grand fir (Abies grandis [Douglas] Forbes.), and within each enclosure, a 0.75 ha paddock was either: 1) ungrazed, 2) grazed by cattle, or 3) grazed by elk in mid-June and mid-July at a moderate utilization level (31.9 ± 2.7%). After grazing treatments, each paddock was subdivided into three 0.25 ha sub-paddocks and sixteen 20-minute foraging bouts were conducted in each sub-paddock using elk, deer, and cattle (n = 4). Within an animal species CP in diets did not differ (p > 0.05) between ungrazed paddocks and grazed paddocks; however, diet CP and IVDMD of each species was higher (p < 0.05) on cattle grazed paddocks compared to elk grazed. Regardless of treatment, cattle diets contained lower CP, IVDMD (p < 0.05) than did deer or elk diets, and relative to elk, deer consistently selected diets which contained higher CP (p < 0.05). In response to grazing, intake rate of DM, CP, ME did not change (p > 0.05) for any of the ungulates. The study revealed that early-summer grazing by cattle or elk at a moderate utilization level has minimal effect on the subsequent nutrient intake rate of cattle, deer, and elk foraging in mixed-conifer forests.

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Section: Discussionsupporting

confidence: 93%

The Effects of Previous Grazing on the Subsequent Nutrient Supply of Ungulates Grazing Late-summer Mixed-Conifer Rangelands

Damiran¹,

DelCurto²,

Findholt³

et al. 2019

SAR

Self Cite

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“…The presence of low NDF in forage samples taken from open and sparse sites may be related to the species composition. Many researchers (Darambazar et al 2013) have noted that grasses contain higher NDF than legumes, which supports these findings. With respect to NDF content, similar results were also recorded by Kaya et al (2004) in the region's rangelands.…”

Section: Discussionmentioning

confidence: 61%

Forage yield and nutritive value of forest gap rangelands under differing Scotch pine canopy coverage

Bilgili¹,

KOÇ>

2022

Bosque (Valdivia)

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Rangeland areas have great value as a quality source of roughage for livestock. As these areas lose their productivity, grazable areas within the forest will become alternative sources of forage for livestock. Therefore, determining the quality and quantity of forest gap understory vegetation at different tree frequencies is very important for efficient management of livestock and sustainable natural resources. This study was carried out in Scotch pine (Pinus sylvestris L.) forests to determine the forage quality of forest gap understories. The study area was separated into three different sites (open site, sparse site and dense site) based on tree canopy coverage. Among the examined plots, it was determined that dry matter yields were 823 -1,486 kg ha -1 , Crude Protein (CP) 9.59 -12.87 %; Neutral Detergent Fiber (NDF) 53.27 -58.49 %; Acid Detergent Fiber (ADF) 32. ranged between 95.32 -112.32. The highest CP, NDF, and ADF contents and the lowest dry matter yield were found in the densely tree-covered area. While dry matter yield decreased, the contents of CP, ADF and NDF increased with increasing tree canopy density. In conclusion, the forest gaps (open and sparse tree canopy) can be used for grazing under sustainable grazing management practices to alleviate forage shortages in the region and provide extra income for rural people. This practice can contribute to sustainable rural development of understory grazing in the forest and forest edge settlements.

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“…The east aspect's high rate grass may be what caused the highest NDF rate to be found there. According to research of Reuss (2001) and Darambazar et al (2003), grasses have a greater concentration of NDF than legumes. The north may have the lowest NDF rate owing to the lower illumination rate in this aspect and the higher leaf-stem ratio as a result of the plants' later maturity stage.…”

Section: Neutral Detergent Fiber (Ndf) Rate (%)mentioning

confidence: 99%

The Seasonal Variation of Forage's Chemical Composition of a Semi-Arid Rangeland According to Altitude and Aspects

KARABULUT,

ÇOMAKLI

2023

Turkish Journal of Range and Forage Science

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This study was carried out on Kop Mountain, which is located at the intersection of Eastern Anatolia and Eastern Black Sea in Turkey. Forage samples were taken from the semi-arid rangeland sites were analyzed for status of the chemical composition according to altitude and aspect. In addition, the seasonal variation of the chemical composition was investigated by repeated analyzes in 3 different periods. In terms of aspect, the highest crude protein ratio (13.40%) occurred in the north, the lowest ratio (10.11%) occurred in the east, while the higher crude protein ratio (11.88%) was observed in the backslope in terms of altitude. The highest crude protein rate (15.15%) was found in May. The highest rate (53.67%) was found in the east and the lowest (45.86%) in the North in terms of NDF. NDF rates in May, July, and October were 48.27%, 47.11%, and 58.17%, respectively. The highest value (33.30%) was recorded in the west and the lowest value (27.66%) was recorded in the North in terms of ADF. ADF values observed in May, July and October were determined as 26.98%, 30.93%, and 36.63%, respectively. According to the results of the research, it was determined that while the crude protein ratio decreased with the maturation of the plants, the elements forming the cell wall increased; and seasonal conditions changed and affected the forage quality.

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Changes in Forage Quantity and Quality With Continued Late-Summer Cattle Grazing a Riparian Pasture in Eastern Oregon of United States

Cited by 8 publications

References 24 publications

The Effects of Previous Grazing on the Subsequent Nutrient Supply of Ungulates Grazing Late-summer Mixed-Conifer Rangelands

The Effects of Previous Grazing on the Subsequent Nutrient Supply of Ungulates Grazing Late-summer Mixed-Conifer Rangelands

Forage yield and nutritive value of forest gap rangelands under differing Scotch pine canopy coverage

The Seasonal Variation of Forage's Chemical Composition of a Semi-Arid Rangeland According to Altitude and Aspects

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