Factors Affecting the Feeding Value of Silage

Flynn, A. V.

doi:10.1016/b978-0-407-01164-9.50020-0

Cited by 9 publications

(8 citation statements)

References 18 publications

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“…Indeed, we observed that tightly packed silages had higher amount of degradable OM in the rumen and increased the energy content by 21 (maize silage) and 13% (sorghum silage), which indicates a conservation of nutrients (McDonald et al, 1991). Our results are in agreement with Flynn (1988), who demonstrated that in well-preserved and poorly preserved silages for cattle feed, the DM digestibility was 73.5 and 70.7%, respectively. The effects of hygienic quality of silage on DM intake of dairy cows were previously examined (Wichert et al, 1998) and it has been seen that aerobic deterioration led to a decrease in DM intake of about 10-20%.…”

Section: Discussionsupporting

confidence: 82%

Effects of ensiling density on nutritive value of maize and sorghum silages

et al. 2016

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-Studies were conducted to determine the effects of different ensiling densities on fermentation, aerobic stability, and nutritive value of maize and sorghum silages. Maize and sorghum were harvested at dough (363 g/kg) and milk stages (275 g/kg), respectively. Herbages were chopped approximately 1.5 cm after harvest and then ensiled in mini silos at high and low-bulk densities for 8.5 weeks. Different bulk densities were achieved by ensiling different weights of herbage in the fixed-volume mini silos (1.5-L anaerobic jars, Weck, Germany). The obtained dry matter (DM) densities were 168 and 216 kg of DM/m 3 for maize forage and 132 and 178 kg of DM/m 3 for sorghum forage. Fermentation kinetics, the rate of aerobic deterioration upon aerobic exposure, and nutrient digestibility were followed during the periods of ensiling (on days 2, 4, 8, 15, and 60). In all cases, increased packing density resulted in silages with lower acetate content, ammonium N levels, and fermentation losses, but lactate content did not differ. Butyrate was detected in appreciable amounts only in sorghum silage. Propionate was not detected in any silage. Tightly packed silages remained stable upon exposure to air. Tight packing increases the digestibly of nutrients and improves the energy content of silages. These data show that high density limits air infiltration and reduces the oxidation loss during storage and feed-out. As a consequence, more dry matter is recovered and more energy is preserved.

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Section: Discussionsupporting

confidence: 82%

Effects of ensiling density on nutritive value of maize and sorghum silages

et al. 2016

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“…These results agreed with those reported by Hieu (1969) and El -Shinnawy et al (2011a &b). The results recorded for the silage quality were in agreement with Flynn (1981) and Mc Donald et al (1973) who reported that the concentration of NH 3 -N as % DM of a good quality silage being usually less than 2.87%. The present results emphasized the relationships between the decreased pH values associated with a decrease in ammonia -N production.…”

Section: Silage Qualitysupporting

confidence: 90%

Improving Potato Vine Utilization by Sheep Using Biological Treatment

Shinnawy

Eassawy

2016

Journal of Animal and Poultry Production

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Twelve mature rams with an average body weight of 65.5±2.8kg were used at Regional Center for Food and Feed Station in four metabolism trials to study the effect of feeding a clover hay or potato vine hay or potato vine silage on nutritive values, rumen parameters, blood picture and economic efficiency. Determination of silage quality and anti -nutritional factors were also studied. Sheep were randomly distributed into 4 equalgroups and housed un seprated cages. The experimental diets were given according to NRC (1990).The feeding was 50% concentrate feed mixture (CFM) and 50% of one the three tested ingredients, clover hay , potato vine hay and potato vine silages. Clover hay was fed in the control group, while the other three tested rations included potato hay or potato vine silage. The results showed that: Solanine values of potato vines hay (PVH) , potato vines silage (PVS) and urea treated potato vines silage (UPVS) were 20.15,8.30 and 7.81 mg / 100g DM ,D respectively. The ensiling process sharply decreased solanine content. The two silages were of excellent quality, and had a normal pH 3.95-4.10 with tendency of superiority of ureated one. The overall means of TVFA's ranged between 7.75-8.15ml eq/100ml R. L., being the higher was recorded for the unureated silage. Potato vines silage (PVS) recorded the least concentration of NH 3 -N(1.72%). The digestibility of OM, NFE and CP of PVH was lower than that of UPVS group, while the highest significant (p<0.05) values of TDN (64%), CP(10.70%) and DE(2.98M cal/kg) were recorded with rations containing potato vine silages (PVS and UPVS) in comparison with feeding on clover hay. Also, rams given rations containing silages retained more nitrogen than other groups. Results explained that blood parameters for the group fed PVH were significantly (P<0.05) lower (RBC, total protein, albumin, globulin and cholesterol). However, hematocrit, AST, ALT, urea, creatinine and bilirubin values of PVH group were significantly (P<0.05) higher compared to PVS, UPVS and control groups. In conclusion, potato vine unureated silage could be used safely, successfully and economically as a good unconventional feed stuffs to raplace clover hay for ruminants, thus minimizing environmental pollution.

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“…It is noteworthy that badly preserved silage is highly undesirable for cattle farmers as it is unpalatable for livestock. Therefore, because livestock reduce their consumption of silage that has preserved badly and what silage they do consume has a reduced nutritive value, the commercial value when such silage is traded among livestock farmers is relatively low. The purchase of this silage, however, could be commercially attractive as a feedstock for an AD facility since the OLR is at the discretion of the facility manager and its SMY should be greater than normal for its harvest date.…”

Section: Resultsmentioning

confidence: 99%

Impacts of characteristics of grass silage and cattle slurry feedstocks on the cost of methane production

Himanshu

Murphy

Lenehan

et al. 2018

Biofuels Bioprod Bioref

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Feedstocks characteristics and their provision cost can have a significant impact on the cost of methane production in an anaerobic digestion (AD) facility. This study investigated the impacts of changing grass silage characteristics, grass silage and cattle slurry provision costs and their binary mixing ratios on the cost of methane production from an on‐farm AD facility. The feedstock provision cost contributed about half of the total cost of methane production when the AD facility solely operated on grass silage. The total cost of methane production from mono‐digestion of cattle slurry, compared to grass silage, was 87% higher when it was supplied free of cost and was 42% higher when a gate fee of €70 t−1 total solids was charged. For co‐digestion of grass silage and cattle slurry, the total cost of methane production progressively increased as the proportion of slurry in the co‐digested feedstocks mixture increased. Antagonistic and synergistic methanogenesis resulted in a corresponding 6% higher and 5% lower total cost of methane production during co‐digestion, at silage:slurry volatile solids ratio of 0.8:0.2, compared to the binary mixture without these effects. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd

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Factors Affecting the Feeding Value of Silage

Cited by 9 publications

References 18 publications

Effects of ensiling density on nutritive value of maize and sorghum silages

Effects of ensiling density on nutritive value of maize and sorghum silages

Improving Potato Vine Utilization by Sheep Using Biological Treatment

Impacts of characteristics of grass silage and cattle slurry feedstocks on the cost of methane production

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