Technical note: Effects of forage protein-binding polyphenols on chemistry of dairy excreta

Powell, J. M.; Broderick, G.A.; Grabber, John H.; Hymes-Fecht, U.C.

doi:10.3168/jds.2008-1738

Cited by 54 publications

(41 citation statements)

References 15 publications

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“…However, faecal N concentrations will not change if apparent digestion of both N and DM decreased by similar proportions. For example, Powell et al (2009) found different levels of L. corniculatus fed with silage to dairy cows did not alter faecal N concentration, but the amount partitioned to faeces increased significantly, and this may have applied to the HCT treatment here. Powell et al (2011) also showed reductions in MUN (as evident in the MCT and HCT treatments) were associated with reductions in urinary urea excretion and ammonia emissions from cows indoors (van Duinkerken et al, 2011), supporting the benefits of CT for reducing urinary N excretion.…”

Section: Discussionmentioning

confidence: 81%

Supplementing lactating dairy cows fed high-quality pasture with black wattle (Acacia mearnsii) tannin

Griffiths

Clark

et al. 2013

Animal

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A reduction in urinary nitrogen (N) excretion from dairy cows fed pasture containing a high N concentration in the dry matter (DM) will have environmental benefits, because losses to soil water and air by leachate and nitrous oxides (N 2 O) will be reduced. Condensed tannins (CT) reduce digestion of N, and provision as a dietary additive could have nutritional benefits for production, but the amount required and the responses to different sources of CT on milk production have not been defined. Two experiments were conducted to evaluate effects of supplementation with CT extracted from black wattle (Acacia mearnsii De Wild.) on milk production and faecal N concentration by lactating dairy cows grazing a vegetative Perennial ryegrass (Lolium perenne L.)-based pasture. In one experiment, CT was administered as a drench, twice daily, to 38 multiparous Holstein-Friesian cows assigned to four treatments; control (CONT, 0 g/day), low CT (LCT, 111 g/day), medium CT (MCT, 222 g/day) and high CT (HCT, 444 g/day), grazing as a single group. The CT supplementation affected milk yield (P , 0.001) with a trend of declining milk yield as CT concentration increased from about 0.6 to about 2.9% of dietary DM. Milk urea nitrogen (MUN) decreased at MCT and HCT levels of supplementation (P , 0.01) but milk fat, CP and lactose percentage were not affected by CT supplementation. The CT supplementation increased N concentration in faeces for LCT and MCT treatments (P , 0.05), suggesting partitioning of dietary N away from urine. When CT was pelleted with grain, in a second experiment and fed twice daily as a supplement at milking, it reduced the acceptability relative to pellets without CT, and tended to lower milk production from 25.4 to 24.5 kg/day, although the decline was not significant (P . 0.05). The diet of cows fed pellets with CT contained about 1.2% CT in the DM but neither milk constituents nor MUN were affected by CT-supplemented grain (P . 0.05). These findings demonstrate beneficial effects for production of low concentrations (c. 0.6% DM) of CT from black wattle when given to cows grazing pasture with an N concentration of 3.8%, and suggest a diversion of N from urine, but when CT exceeded about 1.4% of dietary DM, milk production was depressed. The value of supplementing a pasture diet for lactating dairy cows with black wattle tannin extract will depend on costs of supplementation, returns from milk production and liabilities associated with N losses to urine.

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Section: Discussionmentioning

confidence: 81%

Supplementing lactating dairy cows fed high-quality pasture with black wattle (Acacia mearnsii) tannin

Griffiths

Clark

et al. 2013

Animal

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“…This reduction in urinary N reduces volatile N losses after land application with dairy manure, which in turn reduces environmental losses through nitrate leaching, NH3 volatilization and nitrous oxide emissions [24]. Confirming these effects of CT-containing forages, Powell et al reported that the ratio of N excreted in feces and urine was highest for low-tannin and high-tannin birds' foot trefoil treatment and lowest for the alfalfa treatment [25]. Current study data revealed that the higher fecal N excretion in the presence of active tannins was matched by lower urinary N excretion.…”

Section: Discussion Feed Intake and Digestionmentioning

confidence: 93%

Productive and Reproductive Traits of Sheep Fed Acacia saligna Leaves-Based Diets

El-Gendy¹,

Anwar²,

Fahmy,³

et al. 2017

IJEAB

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“…The type and amount of crude protein (CP) consumed by ruminant affect total N excretions and the relative amount of N excreted in faeces and urine [6]. Lowering the CP content of diet will decrease the amount of N excreted by animal and vice versa.…”

Section: Journal Of Waste Managementmentioning

confidence: 99%

“…An increase in dietary fermentable energy content at a similar N intake level increases N excretion in the faeces with decline of N excreted in urine [23]. Tannins and polyphenols also shift N excretion from urine to faeces and from soluble to insoluble N form in faeces [6].…”

Section: Journal Of Waste Managementmentioning

confidence: 99%

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Vermicomposting: Tool for Sustainable Ruminant Manure Management

Abdullahi

Ismail

Ibrahim

2013

Journal of Waste Management

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Ruminants are important sources of meat and milk. Their production is associated with manure excretion. Estimates of over 3,900,000 million metric tonnes of manure are produced daily from ruminants worldwide. Storage and spread of this waste on land pose health risks and environmental problems. Efficient and sustainable way of handling ruminant manure is required. Composting and vermicomposting are considered two of the best techniques for solid biomass waste management. This paper presents vermicomposting as an effective tool for ruminant manure management. Vermicomposting is a mesophilic biooxidation and stabilisation process of organic materials that involves the joint action of earthworm and microorganism. Compared with composting, vermicomposting has higher rate of stabilisation and it is greatly modifying its physical and biochemical properties, with low C : N ratio and homogenous end product. It is also costeffective and ecofriendly waste management. Due to its innate biological, biochemical and physicochemical properties, vermicomposting can be used to promote sustainable ruminant manure management. Vermicomposts are excellent sources of biofertiliser and their addition improves the physiochemical and biological properties of agricultural soils. In addition, earthworms from the vermicomposting can be used as source of protein to fishes and monogastric animals. Vermicompost can also be used as raw materials for bioindustries.

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Technical note: Effects of forage protein-binding polyphenols on chemistry of dairy excreta

Cited by 54 publications

References 15 publications

Supplementing lactating dairy cows fed high-quality pasture with black wattle (Acacia mearnsii) tannin

Supplementing lactating dairy cows fed high-quality pasture with black wattle (Acacia mearnsii) tannin

Productive and Reproductive Traits of Sheep Fed Acacia saligna Leaves-Based Diets

Vermicomposting: Tool for Sustainable Ruminant Manure Management

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