The effect of dry feed additives on the nutritive value of silage

Moseley, G.; Ramanathan, V. D.

doi:10.1111/j.1365-2494.1989.tb01937.x

Cited by 18 publications

(11 citation statements)

References 16 publications

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“…The inclusion of beet pulp with herbage at ensiling resulted in a significant increase in the apparent digestibilities of DM, OM, energy and fibre components in the silage, which although in contrast with the findings of Ferris and Mayne (1994a) is in agreement with the results of Moseley and Ramanathan (1989). The lack of consistency in these effects reflects difTerences in the digestibility of herbage ensiled between experiments and differences in the nutritive value of sugar-beet pulp.…”

Section: Apparent Digestibility Degradability and Food Utilizationsupporting

confidence: 62%

Effects on milk production of feeding silage and three levels of sugar‐beet pulp either as a mixed ration or as an ensiled blend

Ferris¹,

Maynet²

1994

Grass and Forage Science

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Twenty-one British Friesian dairy cows, in midlactation, were used in a seven-treatment, partially balanced change-over design experiment consisting of three periods each of 4 weeks' duration. Treatments involved offering grass silage either without a sugar-beet pulp (beet pulp) supplement (US) or supplemented with beet pulp at silage/beet pulp dry matter ratios of 80:20 (C40), 65:35 (C80) and 55:45 (C120), and offered in the fonn of a mixed ration. A further three treatments consisted of ofTering ensiled blends of silage and beet pulp, produced by mixing 40 (E40), 80 (E80) and 120 (EI20) kg beet pulp t'l of grass at ensiling. Silage was offered ad libitum on all treatments, with cows receiving

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Section: Apparent Digestibility Degradability and Food Utilizationsupporting

confidence: 62%

Effects on milk production of feeding silage and three levels of sugar‐beet pulp either as a mixed ration or as an ensiled blend

Ferris¹,

Maynet²

1994

Grass and Forage Science

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“…With the exception of the nitrogen component, silage digestibility, as determined using sheep, was relatively unaffected by beet pulp inclusion. This conflicts with the work of Moseley and Ramanathan (1989), who found the digestibility of the nitrogen component to be relatively unaffected by beet pulp inclusion. It is suggested that the lower digestibility of the nitrogen fraction of the beet pulp-treated silages in the present study is a reflection of the low digestibility of the nitrogen component of beet pulp relative to that of herbage harvested after a 50-day regrowth interval.…”

Section: Apparent Digestibility and Food Utilizationcontrasting

confidence: 83%

“…It is suggested that the lower digestibility of the nitrogen fraction of the beet pulp-treated silages in the present study is a reflection of the low digestibility of the nitrogen component of beet pulp relative to that of herbage harvested after a 50-day regrowth interval. In addition, silage ME concentrations were unaffected by treatment, again in contrast to the findings of Moseley and Ramanathan (1989). A comparison of diets offered in treatments S80, SM and ST, as determined using dairy cows, indicates that method of beet pulp inclusion had little effect on overall ration digestibility.…”

Section: Apparent Digestibility and Food Utilizationmentioning

confidence: 68%

Effects on milk production of feeding silage and sugar‐beet pulp as separate components, in a mixed ration or as an ensiled blend

Ferris¹,

Mayne²

1994

Grass and Forage Science

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Twenty early‐lactation British Friesian dairy cows were used in a five‐treatment, partially balanced change‐over design experiment, consisting of four periods each of 4 weeks' duration. Three treatments consisted of offering ensiled blends of silage and sugar‐beet pulp produced by mixing 40 (S40), 80 (S80) and 120 (S120)kg beet pulp t−1 herbage at ensiling. In two further treatments, an untreated silage was supplemented with 5 kg of beet pulp daily, either mixed with the silage prior to feeding (SM) or offered in two equal feeds each day (ST). Silage was offered ad libitum in all treatments, while in addition all cows received 1 kg d−1 of a concentrate supplement containing 470 g crude protein kg−1 fresh weight. Dry‐matter intakes and milk fat + protein yields increased with increasing level of beet pulp inclusion in the diet, irrespective of whether it was offered in the form of an ensiled blend or as a supplement to an untreated silage. With the exception of D‐value (digestible organic matter in the dry matter), which was significantly higher with treatments SM and ST than with the ensiled blend treatment (S80), no significant differences were identified in total ration digestibility or in the efficiency of nitrogen or energy utilization between methods of beet pulp inclusion in the diet. However, offering beet pulp in the form of an ensiled blend reduced the acetate/propionate ratio in rumen fluid compared with offering best pulp as a supplement to an untreated silage. When account is taken of differences in the efficiency of recovery of edible silage dry matter between ensilage systems and of differences in dry‐matter intakes between treatments, total milk fat + protein outputs per 10000 kg herbage dry matter ensiled were 55 (s.e. 50·9) and 78 (s.e. 47·5) kg lower when equal quantities of beet pulp were offered as part of an ensiled blend rather than as a supplement to an untreated silage, as in treatments SM and ST respectively. However, these differences were non‐significant. Alternatively, in order to produce an equal milk output from ensiling a given quantity of herbage, 12·5 and 16·2% more beet pulp would have been required if the beet pulp had been mixed with the herbage at ensiling, rather than offered as a supplement, as in treatments SM and ST respectively.

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“…Butler et al 47 described the non‐glycosidic cyanide as HCN gas which is entrapped by reaction with metal ions and/or carbonyl groups of hexoses to form cyanohydrins. The differences in the rate at which cyanide concentration decreased between the two mixture ratios at the onset of fermentation may be due to an increase in DM at ensiling which tends to improve fermentation, an observation confirmed by Moseley and Ramanathan 48…”

Section: Discussionmentioning

confidence: 70%

Ensilage as a means of reducing the concentration of cyanogenic glycosides in the pods of Acacia sieberiana and the effect of additives on silage quality

2004

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Cyanogenic glycosides are anti-nutritional components capable of liberating hydrogen cyanide, a respiratory poison that has been reported to be responsible for the death of livestock that browse some Acacia species containing these compounds. The objective of the study was to improve the nutritive value of the pods of Acacia sieberiana by reducing their contents of cyanogenic glycosides through ensiling, and to examine the influence of various levels of added molasses and urea on the aerobic stability of the silage. In experiment 1, laboratory silages, prepared by mixing ground pods with water in two ratios (60:40 and 40:60 w/w pod material:water), were put into 250 ml polythene bottles, ensiled for 4, 7, 14, 21, 28 or 35 days and analyzed for cyanide. In experiment 2, silages prepared as described above but using only one of the ratios (40:60), and with the addition of molasses (0, 30 or 60 g kg −1 ) and urea (0, 2.5 or 50 g kg −1 ) were included in a 3 × 3 factorial design, to study the effects of these additives on the stability of the silage. The period of ensilage was 14 days. In experiment 3, the concentrations of molasses and urea were modified to 0, 45 or 90 g kg −1 and 0, 7.5 or 15 g kg −1 , respectively, and the period of ensilage was extended to 45 days. The parent material contained 130.6 mg CN kg −1 DM and ensiling the material for 35 days reduced the concentration to 18.1 mg CN kg −1 DM. Moisture content at ensiling significantly (P < 0.001) affected the concentration of cyanide in the stored silages. Silages opened after 14 days were unstable irrespective of the use of additives. However those with combined urea and molasses exhibited a slow rate of deterioration and low fungal counts. Extending the period of ensiling to 45 days improved the aerobic stability of all the silages. The addition of urea significantly (P < 0.001) increased the pH, crude protein content, gross energy and fermentation acids while molasses treatment increased (P < 0.001) the lactic acid and ash content of the silages. Ensiling ground pods for 45 days was enough to reduce the cyanide content to non-toxic levels and produced a silage which was aerobically stable, while the inclusion of additives further improved the quality of the silages.

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The effect of dry feed additives on the nutritive value of silage

Cited by 18 publications

References 16 publications

Effects on milk production of feeding silage and three levels of sugar‐beet pulp either as a mixed ration or as an ensiled blend

Effects on milk production of feeding silage and three levels of sugar‐beet pulp either as a mixed ration or as an ensiled blend

Effects on milk production of feeding silage and sugar‐beet pulp as separate components, in a mixed ration or as an ensiled blend

Ensilage as a means of reducing the concentration of cyanogenic glycosides in the pods of Acacia sieberiana and the effect of additives on silage quality

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