The effect of cutting time of grass silage in primary growth and regrowth and the interactions between silage quality and concentrate level on milk production of dairy cows

Kuoppala, Kaisa; Rinne, Marketta; Nousiainen, Juha; Huhtanen, Pekka

doi:10.1016/j.livsci.2007.10.002

Cited by 71 publications

(154 citation statements)

References 31 publications

(48 reference statements)

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“…The average rate of daily increase in NDF concentration in our study was a little greater than that measured by Kuoppala et al (2009), but was similar to that measured by Bernes et al (2008). The responses in DMI and MY of the cows to improved forage digestibility in this work were similar to the results reported in other studies (Rinne et al, 1999;Kuoppala et al, 2008). The positive linear relationship between silage DMI and digestibility was one of the most important factors related to the intake potential of grass silages identified by Huhtanen et al (2007).…”

Section: Discussionsupporting

confidence: 89%

“…The values presented are least square means (n 5 8) and expressed in g/kg. and Kuoppala et al (2008 and, but that of NDFD were comparable with those estimated by Rinne et al (1999) for similar levels of growth. However, there was a dramatic drop in the apparent digestibility for LGS diets with increasing maturity of silage grass in this study, which was reflected by the average daily rate of increase in NDF concentration and decrease in in vitro OMD.…”

Section: Discussionsupporting

confidence: 60%

“…those reported in earlier studies (Rinne et al,1999;Kuoppala et al, 2008). This overall high ME intake may be explained by the relatively late stage of lactation of the cows at the start of the experiment with a significantly large variation in the animals' DIM, which would have a negative impact on the overall feed utilization, as suggested by Britt et al (2003).…”

Section: Discussionmentioning

confidence: 55%

“…The variation in ECM yield responses was primarily due to the differences in ME intake rather than diet ME concentration or digestibility. Kuoppala et al (2008) have previously suggested that MY response should be regarded as a function of DM or ME intake rather than diet digestibility. The increased yield of milk constituents resulting from increased MY in the present study can also be explained by the increased ME intake from EGS diets; these findings are consistent with those of Rinne et al (1999) and Kuoppala et al (2008).…”

Section: Discussionmentioning

confidence: 99%

“…Kuoppala et al (2008) have previously suggested that MY response should be regarded as a function of DM or ME intake rather than diet digestibility. The increased yield of milk constituents resulting from increased MY in the present study can also be explained by the increased ME intake from EGS diets; these findings are consistent with those of Rinne et al (1999) and Kuoppala et al (2008). The decrease in milk protein concentration with increasing silage maturity observed in this study has previously been reported (Rinne et al, 1999).…”

Section: Discussionmentioning

confidence: 99%

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The effects of and interactions between the maturity of grass silage and concentrate starch source when offered as total mixed rations on the performance of dairy cows

Tahir

Lund

Hetta

2013

Animal

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A 2 3 2 factorial feeding experiment was conducted to examine the effects of varying the maturity level of the grass used to prepare silage and the nature of concentrate starch source and their interactions on dry matter intake (DMI), diet digestibility, energy corrected milk (ECM) production and milk composition in dairy cows. Twenty-eight multiparous Swedish Red dairy cows, 133 6 45 days in milk (DIM), with an average milk yield of 30 6 4 kg/day and a live weight of 624 6 69 kg were blocked by DIM and randomly assigned to seven replicated balanced 4 3 4 Latin squares with four 21-day experimental periods. The experimental diets consisted of four total mixed rations (TMR) consisting of early-cut grass silage (EGS) supplemented with either barley-or maize-based concentrate and late-cut grass silage (LGS) supplemented with either barley-or maize-based concentrate. All TMR contained identical proportions of forage (51%) and concentrate (49%). Total tract digestibility was estimated by determining indigestible NDF (iNDF) concentrations in feeds and faeces and using iNDF as an internal marker. The feeds' ruminal degradation parameters were determined using both in situ (nylon bag) and in vitro (gas production (GP)) techniques. Cows offered diets containing EGS had greater (P , 0.001) daily dry matter (DM) intakes, ECM yields and total tract digestibilities for DM and organic matter (OM), but these were not affected by the nature of the concentrate starch source. No interaction between the maturity of the silage and the nature of the concentrate starch source was observed for DMI, diet digestibility or ECM yield. Both grass silages and concentrates had similar rates of ruminal degradation of NDF when measured in situ. The in situ DM (P , 0.001) and starch (P 5 0.001) degradation rates of barley-based concentrate were greater than those for maize-based concentrate. In vitro OM GP rates and extents were similar for both concentrate feeds. The results showed that diets containing EGS offered better animal performance and diet digestibility than diets containing LGS. The concentrate starch source did not affect animal performance, but total NDF digestibility was better with diet containing barley-than maize-based concentrate.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionsupporting

confidence: 60%

Section: Discussionmentioning

confidence: 55%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

The effects of and interactions between the maturity of grass silage and concentrate starch source when offered as total mixed rations on the performance of dairy cows

Tahir

Lund

Hetta

2013

Animal

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Management strategies to improve the nitrogen use efficiency in grasslands and the protein quality in grass silages: Lessons from a practical study on dairy farms in Flanders

Van den Bossche,

De Boever,

Haesaert

et al. 2024

Grassland Research

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BackgroundGrasslands are the primary source of forage for ruminants. Legal restrictions on nitrogen fertilization force farmers to optimize nitrogen use efficiency (NUE) of grassland and protein quality in grass silage.MethodsThe present study included grassland data from 10 dairy farms in Flanders. For each grassland field, the presence of clover was determined based on the seed mixture composition. Soil and manure were sampled before the first application and analyzed to determine plant available N content. The annual NUE was calculated for each field possible (n = 28). Prewilted grass samples were taken just before ensiling (n = 65) and grass silage samples (n = 41) were collected from the same fields.ResultsClover fields demonstrated improved NUE due to a lower nitrogen input from fertilizers compared to pure grassland fields (75 vs. 265 kg ha−1). The protein quality of the grass silage was positively correlated with the organic matter digestibility, sugar content, and dry matter content of the prewilted grass. Conversely, crude ash content had a negative effect.ConclusionsThese findings underscore the importance and potential of clover and the practical feasibility of optimizing grassland management to improve both NUE in grasslands and protein quality of the silage.

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The effect of local climate and soil drainage on the environmental impact of grass-based milk production

Sharma

Humphreys

Holden

2017

Int J Life Cycle Assess

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The effect of cutting time of grass silage in primary growth and regrowth and the interactions between silage quality and concentrate level on milk production of dairy cows

Cited by 71 publications

References 31 publications

The effects of and interactions between the maturity of grass silage and concentrate starch source when offered as total mixed rations on the performance of dairy cows

The effects of and interactions between the maturity of grass silage and concentrate starch source when offered as total mixed rations on the performance of dairy cows

Management strategies to improve the nitrogen use efficiency in grasslands and the protein quality in grass silages: Lessons from a practical study on dairy farms in Flanders

The effect of local climate and soil drainage on the environmental impact of grass-based milk production

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