The voluntary intake by sheep and cattle of silages differing in free-acid content

McLeod, David; Wilkins, R. J.; Raymond, W. F.

doi:10.1017/s0021859600017007

Cited by 103 publications

(54 citation statements)

References 21 publications

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“…The concentrations of acetic, propionic, and n-butyric acids in the untreated silages in both experiments are within the normal range for silages made from a variety of swards (McLeod et al 1970;Gordon et al 1961;Bryant and Lancaster 1970;Castle and Watson 1970).…”

Section: Organic Acids and 23-butanediolmentioning

confidence: 51%

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The effect of formaldehyde treatment on the chemical composition and nutritive value of silage

Barry

Fennessy

1972

New Zealand Journal of Agricultural Research

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Two experiments were conducted in which solutions of formaldehyde (HCHO) were applied to clover-dominant herbage before conservation as high-moisture silage.In Experiment 1 the HCHO application rates were 0, 0.6, 1.1. 2.2, and 4.4% (wjw of the dry matter treated), and 15 kg quantities of the herbage were ensiled in small polythene containers. Rates of HCHO up to 2.2% decreased the content of acetic acid, increased the content of a compound identified as 2,3~butanediol, but had no effect on silage pH (4.74 units). The 4.4% rate decreased the contents of acetic acid and ?..3-butanediol to very low levels and increased the pH to 5.02 units. The two higher rates of HCHO decreased nitrogen (N) breakdown in the silages and reduced ammonia production ill vitro.In Experiment 2, untreated silage and silage treated with HCHO (1.7% wjw of the dry matter) were ensiled in 6000 kg polythene-covered stacks. Formaldehyde treatment decreased the contents of acetic, propionic, n-butyric, and lactic acids, decreased the extent of N breakdown. and increased pH. The treatment decreased the osmotic pressure and conductivity of silage juice by 25 and 19% respectively, 2.3-butanediol comprised 2.40/< of the dry matter and was unaffected by HCHO treatment.Untreated silage showed a strong buffering action to both sodium hydroxide and artificial saliva solutions. Formaldehyde treatment before ensiling eliminated this effect.Secondarv fermentation was apparent in a 30 em deep surface layer of HCHO-treated silage, but was not present to any marked extent in untreated silage.

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Section: Organic Acids and 23-butanediolmentioning

confidence: 51%

“…propionic, butyric, and lactic acids and ammonia nitrogen (N) (Gordon et al 1961;McLeod et al 1970;McDonald et al 1968).…”

Section: Introductionmentioning

confidence: 99%

The effect of formaldehyde treatment on the chemical composition and nutritive value of silage

Barry

Fennessy

1972

New Zealand Journal of Agricultural Research

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“…For personal use only. (Mcleod et al 1970;Farhan and Thomas 1978) or the observation of Edwards and Poole (1982) with lactating cows.…”

mentioning

confidence: 96%

“…Mots cl6s: NaHCO,, bentonite, vaches en lactation, ingestion d'ensilage, disestibilit6 The manipulation of the free acid content of grass silages has been shown by Mcleod et al (1970) to influence the dry matter consumption of silages by steer calves and sheep. Orth and Kaufman (1966), by adding sodium bicarbonate to silage just prior to feeding, observed an increase in dry matter consumption.…”

mentioning

confidence: 99%

The Investigation of Sodium Bicarbonate or Bentonite as Supplements in Silages Fed to Lactating Cows

Fisher¹,

Mackay²

1983

Can. J. Anim. Sci.

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“…But in the subsequent year, Lahr et al (1983) For personal use only. (Mcl-eod et al 1970), silage fermentation products (Thomas et al 1961) and moisture content (Grenawalt et al 1981).…”

Section: Digestibilitymentioning

confidence: 99%

Comparison of Wilted-Alfalfa Silage and Alfalfa Hay Preserved With Propionic Acid in Corn-Silage-Based Diets for Milking Cows

Atwal¹,

Erfle²

1988

Can. J. Anim. Sci.

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Atwel, A. S. a,ur ERFLE, J. D. 1988. Comparison of wilted-alfalfa silage and alfalfa hay preserved with propionic acid in corn-silage-based diets for milking cows. Can. J. Anim. Thirty cows (9 uniparous and 2l multiparous) were fed three diets during weeks [5][6][7][8][9][10][11][12][13][14][15][16] of lactation. The dietary ingredients were adjusted weekly to reflect their oven dry matter (DM). production for this preliminary period was used as a covariate to compare the effects of dietary treatments. The number of lactations. the milk oroduced during weeks 6-9 of the previous lactation or during the preliminary period for uniparous cows were used to stratiry the cows into 10 groups of three cows each. One cow from each group was then assigned at random to one of the three experimental diets. A 2-wk interval (weeks 5-6 of lactation) was used as the adjustment period; then milk production and feed intake were recorded for a l0-wk (weeks 7-16 of lactation) experimental period. The SCM data were also anall zed by co',ariance analysis using the individual cow data from preliminary period (weeks 3-4 of lactation) as a covariate (Erfle et al. 1983) In this text, statements of differences or significant differences refer to P < 0.05 unless otherwise stated.

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The voluntary intake by sheep and cattle of silages differing in free-acid content

Cited by 103 publications

References 21 publications

The effect of formaldehyde treatment on the chemical composition and nutritive value of silage

The effect of formaldehyde treatment on the chemical composition and nutritive value of silage

The Investigation of Sodium Bicarbonate or Bentonite as Supplements in Silages Fed to Lactating Cows

Comparison of Wilted-Alfalfa Silage and Alfalfa Hay Preserved With Propionic Acid in Corn-Silage-Based Diets for Milking Cows

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