Utilization of Formic Acid Treated Sorghum-Sudan Silage by Dairy Cows

Fisher, L. J.; Lessard, J. R.; Lodge, G. A.

doi:10.4141/cjas71-050

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…Formic acid has been shown to be a highly effective silage additive for direct-cut, unwilted herbage over a wide range of conditions (4,5,7,9,10,12) and the present study demonstrates that it is equally valuable for herbage wilted for 1 and 2 days and with a DM of about 24%.…”

Section: Discussionmentioning

confidence: 69%

Silage and Milk Production. A Comparison Between Wilted Grass Silages Made With and Without Formic Acid

Castle

Watson

1973

Grass and Forage Science

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Fonr grass sUages made in May from the same herbage were compared io a 16-week feeding experiment with 12 Ayrshire cows. The silages were made from herhage wilted for either 1 or 2 days, and with or without \ gal formic acid per ton of herhage. The silages treated with acid were, on average, 5°C cooler than the untreated silages, had lower pH values, higher lactic acid contents, slightly higher DM and crude protein contents, and higher contents of digestible organic matter in the DM. The silages were fed ad lib. with a supplement of harley and groundnut cake. The intakes of silage DM were higher with the acidtreated than with the nntreated silage. The mean daily milk yields on the silages made with and without the acid additive were 35-4 and 331 lb (16-1 and 15-0 kg), respectively, for the sOage, wilted for 1 day and 34-2 and 32 2 Ih (15-5 and 14-6 kg) for the silage wilted for 2 days. The effects of the treatments on the composition of the milk were small. It is concluded that the silages treated with formic acid additive were superior to the nntreated silages as a feed for dairy cows.

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Section: Discussionmentioning

confidence: 69%

Silage and Milk Production. A Comparison Between Wilted Grass Silages Made With and Without Formic Acid

Castle

Watson

1973

Grass and Forage Science

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“…The chemical characteristics of silage can be altered by wilting (Castle & Watson 1970;Jackson & Forbes 1970;Donaldson & Edwards 1976;Hinks et al 1976) and by the addition of formalin (Barry & Fennessy 1972;Brown & Valentine 1972;Valentine & Brown 1973;Valentine & Radcliffe 1975). However, it is not lmown whether milk yield and composition can be influenced by these changes, as previous studies (Brown 1960;Murdoch 1962;Kormos 1967;Castle & Watson 1970;Fisher et al 1971; Valentine & Radcliffe 1975) have included confounding effects due to different levels of feeding, and the supplementation of silages with concentrates.…”

Section: Introductionmentioning

confidence: 99%

Silage and dairy cow production

Rogers

Bryant²,

Jury³

et al. 1979

New Zealand Journal of Agricultural Research

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In two experiments with Tersey cross-bred dairy cows, pasture and unwilted silage, and unwilted, wilted, and forma~dehyde-treated silages, fed as sale rations, ''v'ere compared. In both experiments level of feeding and diet significantly affected milk production and composition. In the first experiment voluntary intake of silage was 32% lower than that of pasture, and silage feeding lowered milk yields and fat and protein contents of milk. Regression analyses of data obtained when different levels of feeding were applied indicated that differences in milk yield and composition persisted when the diets were compared at the same digestible energy intake. Also, pasture-fed cows lost more body weight than those fed silage. In the second experiment, by comparison with unwilted silage, formaldehyde-treated silage increased milk fat content and yields of milk and fat. Wilting also produced relative increases in yields of milk and its components. Differences between diets in the pattern of rumen fermentation were small and not considered to influence milk yield and composition. However, lower levels of soluble carbohydrate and higher levels of soluble non-protein N, each affecting the efficiency of rumen microbial synthesis and consequently the amount of available dietary protein,. could have been responsible. The possible mechanisms accounting for different responses between silages are also discussed.

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