Corn Silage Supplementation for Maximum Intake and Milk Production

Montgomery, M.J.; Baxter, H.D.; Bearden, B.J.

doi:10.3168/jds.s0022-0302(76)84461-x

Cited by 11 publications

(3 citation statements)

References 9 publications

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“…A quadratic response was observed for apparent digestibility of NDF (P < 0.05) and ADF (P < 0.01) and digestibility was greatest when all of the dietary forage was provided by either RS or CS instead of a blend of CS and RS. Montgomery et al (1976) reported lower CP digestibility for diets based on CS compared with those based on a blend of CS and alfalfa hay or low-moisture alfalfa silage. This decrease may be partially due to corn grain from the corn silage that passes through the reticulorumen to the lower tract without being digested.…”

Section: Resultsmentioning

confidence: 94%

“…Although DMI was not significantly different among treatments, intake of DM was numerically higher for the diets containing 65 and 100% RS, which explains part but not all of the milk yield response to increasing RS. Montgomery et al (1976) ported lower DMI and milk yield for cows fed diets based on CS compared with that of cows fed blend of CS and alfalfa hay or low-moisture silage. Colenbrander et al (1986) reported lower DMI as a percentage of BW for cows fed CS compared with either alfalfa silage or a blend of CS and alfalfa silage, but milk yield was similar for all treatments.…”

Section: Resultsmentioning

confidence: 95%

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Effect of Replacing Corn Silage with Annual Ryegrass Silage on Nutrient Digestibility, Intake, and Milk Yield for Lactating Dairy Cows

Bernard

West

Trammell

2002

Journal of Dairy Science

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Twenty Holstein cows were used in an 8-wk randomized block design study to determine the effects of replacing corn silage with ryegrass silage on nutrient intake, apparent digestion, milk yield, and milk composition. The 8-wk trial consisted of a 2-wk preliminary period followed by a 6-wk collection period. Experimental diets were formulated to provide 55.5% of the total dry matter (DM) as forage. Ryegrass silage was substituted for 0, 35, 65, and 100% of DM provided by corn silage. Dietary concentrations of neutral detergent fiber (NDF) and acid detergent fiber (ADF) increased as ryegrass silage replaced corn silage. Intake of DM and crude protein (CP) was similar for all treatments, but intake of NDF and ADF increased linearly as ryegrass silage replaced corn silage. Apparent digestibility of DM declined linearly, whereas digestibility of CP increased linearly as ryegrass silage replaced corn silage. Apparent digestibility of NDF and ADF was highest for the diets in which ryegrass or corn silages provided all of the forage, resulting in a quadratic response. Dry matter intake was not different among treatments. Yield of milk, fat, and protein increased as ryegrass silage replaced corn silage. No differences were observed for body weight change, body condition score, and serum urea nitrogen concentration, but serum glucose concentration increased with increasing dietary proportion of ryegrass silage. These results indicate that substituting ryegrass silage for a portion or all of the corn silage in diets fed to lactating dairy cows can improve yield of milk and components.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 95%

Effect of Replacing Corn Silage with Annual Ryegrass Silage on Nutrient Digestibility, Intake, and Milk Yield for Lactating Dairy Cows

Bernard

West

Trammell

2002

Journal of Dairy Science

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“…Vor allem zu Beginn der Laktation kann dies von Nachteil sein, da die höchste Milchleistung nicht mit dem Zeitpunkt des höchsten Futterverzehrs zusammen fällt und dies oft zu einem mehr oder weniger deutlichen Energiedefizit führt (Butler und Smith 1989). Eine Kompensation der geringeren Energiedichte durch eine höhere Futteraufnahme bei einem Einsatz von Luzernesilage in Mischrationen ist jedoch denkbar, weil die Einbeziehung von Luzernesilage in die Ration in anderen Untersuchungen einen Anstieg in der Futteraufnahme bewirkte (Montgomery et al. 1976; Dhiman und Satter 1997; Hoffman et al.…”

Section: Einführungunclassified

Zum Einsatz von Luzernesilage bei Kühen mit hoher Milchleistung

Bulang

Kluth

Engelhard

et al. 2005

Animal Physiology Nutrition

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Studies on the use of lucerne silage as a forage source for high-yielding dairy cows. It was the main objective of this study to investigate effects of lucerne silage inclusion in maize silage-based rations on dry matter intake, milk yield and metabolic parameters of high yielding dairy cows. Three total mixed rations (TMR) were used. They contained as the main forage source on a dry matter basis 41.5% maize silage and 12% grass silage (ration maize) or 18% maize silage and 29% of either grass silage (ration grass) or lucerne silage (ration lucerne). Organic matter digestibility, determined with wether sheep, was 77 and 65% for the grass and the lucerne silage, respectively. Each TMR was fed to 4 wether sheep to determine crude nutrient digestibilities. The content of net energy for lactation (NEL), as calculated from digestible crude nutrients, was (MJ/kg dry matter (DM)): 7.1 (maize), 7.2 (grass) and 6.8 (lucerne). Based on the results of a chemical fractionation of crude protein it was calculated that the content of utilisable crude protein (nXP) was not below 167 g/kg DM and that the N balance in the rumen was not negative for all 3 TMR. The TMR were fed for 169 days to at least 28 dairy cows per treatment which were in their first half of lactation. Feed intake, milk performance data and physiological indicators were measured for each individual cow. The DM intake was significantly higher in treatment lucerne (23.2 kg/d) than in treatments grass (21.2 kg/d) and maize (22.6 kg/d). Daily intakes of NEL and nXP were significantly lower in treatment grass than in the other two treatments. Milk yield was significantly higher in treatment maize (41.7 kg/d) than in treatments grass (37.3 kg/d) and lucerne (38.5 kg/d). This was associated with a significantly lower milk fat content in treatment maize (3.5%) in comparison with the other two treatments (3.9% each). Milk protein content was unaffected by treatment (3.4% on average). Similarly, the acetone content of milk was not significantly different between treatments. The beta-hydroxybutyrate content of the deproteinized blood was significantly higher in treatment lucerne at start of lactation, but this difference disappeared in subsequent parts of the experimental period. Measurements of back fat thickness indicated mobilisation and retention of energy by cows during the experimental period to be similar in all treatments. It is concluded that lucerne silage is a suitable forage source for high yielding dairy cows in spite of its low digestibility.

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Protein studies on maize silage as a basal ration for dairy cows

Phipps¹,

Weller²,

Smith³

et al. 1981

J. Agric. Sci.

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In Expt 1 40 lactating British Friesians, 20 cows and 20 heifers, were used to study the effect of crude protein (CP) content of the whole ration on milk yield, milk composition and live-weight change when maize silage was fed as the basal ration. There were four treatments with five cows and five heifers on each. During lactation weeks 4-12 the cows on treatments 1, 2, 3 and 4 all received 7 kg maize silage dry matter (D.M.) plus 8 kg D.M./day of a concentrate containing either 14, 18, 22 or 24% CP, respectively; heifers received 1 kg/day less of both silage and concentrate. This produced whole-ration CP contents of 11-7, 13-9, 16-0 and 17-1%. In the subsequent lactation weeks 13-20 silage feeding was increased to 9 kg D.M./cow/day and concentrate feeding decreased to 5 kg D.M./cow/day. Heifers again received 1 kg/day less of both silage and concentrate. This decreased whole-ration CP contents to 10-5, 11-7, 12-9 and 13-4%.During lactation weeks 4-12 and 13-20, with the exception of milk fat content in weeks 13-20, there were significant linear effects of whole-ration CP content on milk yield, milk fat, protein, lactose and total solids. There were no significant curvilinear relationships. Thus, despite the fact that the highest numerical values were generally recorded for the animals on treatment 3, the results indicate that a whole-ration CP content of at least 17-1 and 13-4% are required in early and mid-lactation respectively.In Expt 2 the loss of D.M., acid-detergent fibre and nitrogen from maize silage suspended in nylon bags in the rumen was measured. Compared with feeding either a low or high protein supplement, losses were greater for silage fed alone. If it is accepted that nitrogen loss can be approximated to protein degradability, then the value for maize silage was between 0-6 and 0-7. Using the same technique in Expt 3, comparable nitrogen losses for fish meal, decorticated groundnut meal and soya-bean meal were 0-3, 0-9 and 0-9, respectively, after 24 h incubation.

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Corn Silage Supplementation for Maximum Intake and Milk Production

Cited by 11 publications

References 9 publications

Effect of Replacing Corn Silage with Annual Ryegrass Silage on Nutrient Digestibility, Intake, and Milk Yield for Lactating Dairy Cows

Effect of Replacing Corn Silage with Annual Ryegrass Silage on Nutrient Digestibility, Intake, and Milk Yield for Lactating Dairy Cows

Zum Einsatz von Luzernesilage bei Kühen mit hoher Milchleistung

Protein studies on maize silage as a basal ration for dairy cows

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