Comparisons Between Alfalfa Silage and Hay

Thomas, J. W.; Brown, L.D.; Emery, R.S.; Benne, Erwin J; Huber, J.T.

doi:10.3168/jds.s0022-0302(69)86529-x

Cited by 46 publications

(15 citation statements)

References 11 publications

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“…Sheaffer et al reported lower CP in ensiled corn than fresh corn (16). Thomas et al [(17) as cited by (19)], on the other hand, reported slightly higher CP in ensiled material, consistent with our observations. Respiration is likely to result in a loss of DM (mostly sugars), which could result in a slight increase in CP of ensiled corn as a percent of DM.…”

Section: Impact Of Ensiling On Cp Concentrationssupporting

confidence: 93%

Forage Quality Differences of Corn Hybrids as Influenced by Ensiling

Cherney¹,

Cherney²,

Cox

2007

Forage & Grazinglands

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Our objective was to determine the impact of ensiling on forage quality of 54 corn hybrids (Zea mays L.). Four field replicates of each hybrid were planted at each of two locations in NY in 2003 (Groveland Station and Aurora, NY). There were differences among hybrids in pH (P < 0.01) at both sites. The pH of ensiled samples was positively correlated with silage DM (r = 0.82) and increased 0.016 pH units for each 1.0% increase in DM. Crude protein of ensiled samples was highly correlated (r = 0.95) with CP of fresh samples, but CP was 0.41% greater in the ensiled samples. Sugar of fresh samples averaged 9.9% while that of corresponding ensiled samples averaged 3.6%. Ranking of hybrids for sugar changed from fresh to ensiled, but was not consistent between sites. There were hybrid × ensiling/fresh interactions for NDF and IVTD at one site; this interaction was not significant at either site for fiber digestibility (NDFD). There was a significant correlation between fresh and ensiled sample NDFD (r = 0.74, P < 0.01). These data suggest little difference between fresh or ensiled hybrid rankings for NDFD, which implies that differences among hybrids in NDFD could be selected by using fresh samples. Inconsistencies for hybrid × ensiling/fresh interactions indicated that more research is needed to fully assess the relative benefits of ensiling prior to quality comparisons of corn hybrids.

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Section: Impact Of Ensiling On Cp Concentrationssupporting

confidence: 93%

Forage Quality Differences of Corn Hybrids as Influenced by Ensiling

Cherney¹,

Cherney²,

Cox

2007

Forage & Grazinglands

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“…The calorific values found are near the top of the range (4.53-5.24 kcal/gDM) reported for silage by other authors (Waldo et al 1969: Thomas et al 1969Beever et al 1971), all of whom have noted that the calorific value of silage is considerably higher than when the same forage is conserved as hay. The presence of the high-energy compound 2,3-butanediol (6.46 kcal/ g) in these silages would account for 0.16 kcal/g silage dry matter, or approximately 3o/ c of the total heat of combustion.…”

Section: Heat Of Combustionsupporting

confidence: 53%

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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“…Nevertheless, the percent composition of the dewatered silage was still significantly lower for crude protein (P<.Ol) and higher for cell walls (P<.Ol) as well as ADF, cellulose, and hemicellulose (P < .05 ). Similar differences were reported by Thomas (15) in the I year in which he analyzed silage cell wall fractions, although neither the initial composition nor estimates of experimental error of the reported means were presented. Wilted silage, on the other hand, experienced no seepage loss and contained a greater proportion of soluble materials after fermentation than either of the other silages (P < .0 l ).…”

Section: Resultssupporting

confidence: 72%

Evaluation of Dewatering and Wilting as Moisture Reduction Methods for Hay‐Crop Silage¹

Derbyshire¹,

Gordon²,

Holdren³

et al. 1969

Agronomy Journal

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The wilting and dewatering methods of reducing alfalfa (Medicago sativa L.) moisture prior to ensiling were compared with the direct‐cut harvesting procedure. Field dry matter losses from wilting were essentially zero and were high for the dewatering method. Because of large storage losses of direct‐cut silage, total dry matter losses from the field to the cow were similar for the two nonwilted methods but five times greater than for wilting. Silage temperatures were similar for the three harvesting systems, but silage dry matter bulk density was greatest for the wilted method. Both methods of reducing forage moisture reduced the percentage of the more soluble plant fractions. These differences were not as marked after fermentation. Milking cow response was similar on the three silages in spite of small differences in energy consumption. Wilting appeared superior particularly when animal product per unit of crop land is dominant.

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Comparisons Between Alfalfa Silage and Hay

Cited by 46 publications

References 11 publications

Forage Quality Differences of Corn Hybrids as Influenced by Ensiling

Forage Quality Differences of Corn Hybrids as Influenced by Ensiling

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

Evaluation of Dewatering and Wilting as Moisture Reduction Methods for Hay‐Crop Silage¹

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Comparisons Between Alfalfa Silage and Hay

Cited by 46 publications

References 11 publications

Forage Quality Differences of Corn Hybrids as Influenced by Ensiling

Forage Quality Differences of Corn Hybrids as Influenced by Ensiling

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

Evaluation of Dewatering and Wilting as Moisture Reduction Methods for Hay‐Crop Silage1

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Evaluation of Dewatering and Wilting as Moisture Reduction Methods for Hay‐Crop Silage¹