Quality-related characteristics of forages as influenced by plant environment and agronomic factors

Buxton, D. R.

doi:10.1016/0377-8401(95)00885-3

Cited by 399 publications

(451 citation statements)

References 25 publications

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“…From the results of multivariate regression analysis we can see that among all climatic factors only MAT significantly influenced CF, which may reflect the effect of low temperatures during dry matter accumulation in plants. Previous studies show an increase in temperature will result in a decrease of the leaf/stem ratio and will promote the production of structural carbohydrates with an increase in the CF content and a reduced digestibility of pasture forage [42,43], consistent with our results.…”

Section: Effect Of Environmental Factors On Forage-quality Patternssupporting

confidence: 82%

“…However, multivariate regression analysis also shows that even after taking vegetation type into consideration some environmental factors still have significant influence on forage quality, which may be caused by the fact environmental factors can affect forage-quality patterns through certain physiological mechanisms [1,[40][41][42]. From the results of multivariate regression analysis we can see that among all climatic factors only MAT significantly influenced CF, which may reflect the effect of low temperatures during dry matter accumulation in plants.…”

Section: Effect Of Environmental Factors On Forage-quality Patternsmentioning

confidence: 99%

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Large scale patterns of forage yield and quality across Chinese grasslands

Shi

et al. 2012

Chin. Sci. Bull.

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Understanding the patterns of forage quantity and quality and investigating the factors influencing these patterns are essential for the development of animal husbandry. However, there is very little field evidence focused on these issues at a large spatial scale. In the current study, we analyzed forage quantity and quality at 177 sites distributed in all the major grassland types across China, and explored the relationship between forage quantity and quality based on consistent sampling protocols. We also investigated potential factors influencing forage quality patterns across China. Our study indicates the Tibetan grasslands had both higher quantity and quality forage than the Inner Mongolian grasslands, and alpine meadow had the best quantity and quality forage because of the meadow's high productivity and the crude protein and nitrogen free extract content of the meadow forage. For the main vegetation formations, Kobresia tibetica meadows and Achnatherum splendens steppes had the highest quantity, while Kobresia pygmaea meadows and Kobresia humilis meadows had the best quality. We also found that although environmental factors, such as temperature and soil fertility, could affect physiological processes and so influence forage quality, the large scale patterns of change were mainly a result of the differences in vegetation types. Finally, we reported a negative relationship between forage quantity and quality: higher forage quantity means more crude fiber but less ether extract and crude protein. These findings improve our understanding on the spatial patterns of forage quantity and quality, and provide solid evidence related to the future development of animal husbandry.

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Section: Effect Of Environmental Factors On Forage-quality Patternssupporting

confidence: 82%

Section: Effect Of Environmental Factors On Forage-quality Patternsmentioning

confidence: 99%

Large scale patterns of forage yield and quality across Chinese grasslands

Shi

et al. 2012

Chin. Sci. Bull.

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“…Number of leaves and thus leaf/stalk ratios decrease with the progress of ripening. Ripening reduces number of leaves rich in crude protein and reduces crude protein ratios of the plants (Buxton, 1996). In present study, crude protein ratios of Astragalus species decrease with the progress of ripening and quite significant differences were observed among the species.…”

Section: Discussionsupporting

confidence: 44%

Potential Nutritive Value of Astragalus Species Harvested at Three Different Maturity Stages

Çaçan¹

2017

Appl. Ecol. Env. Res.

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Abstract. The present study was conducted to investigate the effects of maturity stages on the chemical composition, in vitro gas and methane production, metabolic energy and organic matter digestibility for eleven Astragalus species widely encountered over the rangelands and intensely grazed by ruminants. Astragalus samples were collected from the rangelands at three different stages namely as before flowering, flowering and bear fruit stages. Dried samples were then subjected to various chemical analysis. Effects of Astragalus species and maturity stages on chemical composition, in vitro gas and methane production, metabolic energy and organic matter digestibility were found to be quite significant (P < 0.001). Acid detergent fiber (ADF) and neutral detergent fiber (NDF) ratios increased, while the crude protein, crude ash, crude oil, condensed tannin contents, gas and methane production levels decreased with the progress of maturity stage. It can be suggested that grazing was more favorable at before flowering or flowering stages of Astragalus species because of high crude protein and metabolic energy content of plant at these stages. Also, although all Astragalus species were considered as a quality feed source for ruminants, endemic Astragalus oocephalus and Astragalus longifolius species were prominent with their superior nutritive properties.

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“…With advancing stage of maturity, the proportion of cell wall components increases relative to the proportion of cell contents (e.g. crude protein) (Buxton 1996). The corresponding decline in herbage quality reflects the decrease in the ratio of leaf to stem tissue and the greater rate of decline in digestibility of the stem compared with the leaf due to increased lignification (Hatfield 1993).…”

Section: Discussionmentioning

confidence: 99%

The estimated nutritive value of three common grassland species at three primary growth harvest dates following ensiling and fractionation of press-cake

McEniry

O’Kiely

2013

AFSci

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In a Green Biorefinery processing green biomass one possible application for the press-cake fraction is as a feedstuff for ruminants. This study investigates the effects of ensiling and fractionation on the estimated nutritive value of three grassland species harvested at different stages of maturity. Perennial ryegrass (Lolium perenne L., var. 'Gandalf'), cocksfoot (Dactylis glomerata L., var. 'Pizza') and red clover (Trifolium pratense L., var. 'Merviot',) were grown in field plots and harvested and ensiled in laboratory silos. These silages were subsequently fractionated into presscake and press-juice fractions. Loss of soluble, fermentable organic matter during ensiling increased the relative proportions of fibre and crude protein. Fractionation resulted in the substantial reduction of herbage soluble nutrient and mineral content, increasing the fibre content and reducing digestibility and crude protein. The low energy and protein content of the press-cake fraction, especially at later harvest dates, will limit its use in ruminant diets.

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Quality-related characteristics of forages as influenced by plant environment and agronomic factors

Cited by 399 publications

References 25 publications

Large scale patterns of forage yield and quality across Chinese grasslands

Large scale patterns of forage yield and quality across Chinese grasslands

Potential Nutritive Value of Astragalus Species Harvested at Three Different Maturity Stages

The estimated nutritive value of three common grassland species at three primary growth harvest dates following ensiling and fractionation of press-cake

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