Using the cornell net carbohydrate and protein system model to evaluate the effects of variation in maize silage quality on a dairy farm.

2009 ◽  
pp. 281-288
Author(s):  
T. P. Tylutki ◽  
D. G. Fox ◽  
M. McMahon ◽  
P. McMahon
Keyword(s):  
Dairy Farm ◽  
System Model ◽  
Maize Silage ◽  
Protein System ◽  
Silage Quality

scholarly journals Effects of lactobacillus plantarum inoculants on maize silage quality

2017 ◽  
Vol 33 (1) ◽  
pp. 115-125 ◽  
Author(s):  
Snezana Djordjevic ◽  
Violeta Mandic ◽  
Dragana Stanojevic ◽  
Jovanovic Ljeskovic
Keyword(s):  
Acetic Acid ◽  
Chemical Composition ◽  
Lactobacillus Plantarum ◽  
Dairy Farm ◽  
Field Trials ◽  
Positive Control ◽  
Negative Control ◽  
Maize Silage ◽  
Bacterial Inoculants ◽  
Silage Quality

In the winter time in Serbia, maize silage is the main ruminant feed. Therefore, managing maize silage is an important contributor to maintain the silage quality for livestock feed. In the study were evaluated the chemical composition, energetic and fermentation characteristics in whole-crop maize silage inoculated with different bacterial inoculants under field conditions in the commercial dairy farm, during the 2015. Three treatments were tested: negative control (untreated silage), a positive control (competitor inoculant) and Silko treatment (contains a mixture of 4 strains of Lactobacillus plantarum (LP1, LP2, LP3 and LP4). Maize is ensiled in the milk-wax grain maturity. After 90 days of ensiling, the maize silages were analyzed. The application of bacterial inoculants improved the chemical composition and energetic characteristics of silage. The inoculant Silko was more effective at improving the fermentation characteristics than competitor inoculant. Ash, cellulose, soluble N/TN, NH3-N/TN, ADF, NDF, acetic acid and pH were significantly lower in Silko treatment than positive control. There were no differences in crude fat, crude protein, ME, NEL, lactic acid and butyric acid between the treated silages. Generally, the new product bacterial inoculant Silko proved in field trials its ability to support the ensiling process in maize. The main action of the bacterial inoculant Silko is performed in two ways: the reduced degradation of protein in silage and the improvement of the aerobic stability due to the lower pH, higher content of acetic acid than negative control.

The effect of grass and maize silage quality on diet digestibility and performance of beef cattle

2003 ◽  
Vol 2003 ◽  
pp. 10-10
Author(s):  
R.M. Kirkland ◽  
D.C. Patterson
Keyword(s):  
Beef Cattle ◽  
Animal Performance ◽  
Maize Silage ◽  
High Quality ◽  
Grass Silage ◽  
Preliminary Study ◽  
Silage Quality ◽  
And Performance

A preliminary study at this Institute indicated that inclusion of high quality maize silage in a grass silage-based diet could promote higher forage intakes in beef cattle, but the response to inclusion of maize silage was affected by the quality of grass silage. The objective of this study was to further examine the effects of grass (GS) and maize (MS) silage qualities on intake characteristics, and to evaluate the influence of forage offered on animal performance.

scholarly journals The effect of bacterial inoculant on chemical composition and fermentation of alfalfa silage

2016 ◽  
Vol 32 (4) ◽  
pp. 413-423 ◽  
Author(s):  
Snezana Djordjevic ◽  
Violeta Mandic ◽  
Dragana Stanojevic
Keyword(s):  
Chemical Composition ◽  
Total Nitrogen ◽  
Production Systems ◽  
Dairy Farm ◽  
Meat Production ◽  
Soluble Nitrogen ◽  
Ruminant Diets ◽  
Acid Detergent Fibre ◽  
Alfalfa Silage ◽  
Silage Quality

Alfalfa silage is a useful source of protein for feeding ruminants. Therefore, managing alfalfa silage in livestock production systems is an important issue in order to maintain the silage quality and achieve maximum profitable production of milk and meat. The aim of this investigation was to estimate the effects of bacterial inoculant Silko, containing Lactobacillus plantarum (strains: LP1, LP2, LP3 and LP4) on chemical composition, energetic characteristics and fermentation alfalfa silage under field conditions in the commercial dairy farm, during the 2016. The first-cut alfalfa in the second year has been conserved in silage form. The silage mass was subdivided into two equal parts (control (silage without inoculant) and silages treated with bacterial inoculant Silko) and ensiled in trench silo. After 60 days of ensiling, the silages were analysed. Dry matter, ash, crude protein, lactic acid, acetic acid, total digestible nutrients value and relative feed value were significantly higher in silage treated with bacterial inoculant Silko compared to control. Contrary, alfalfa silage treated with a bacterial inoculant Silko had lower values of cellulose, acid detergent fibre, neutral detergent fibre, nonnitro extractive matter, pH, butyric acid, soluble nitrogen/total nitrogen and NH3- N/total nitrogen than untreated silage. Results showed that bacterial inoculant Silko increases silage quality compared to control so that research should be directed toward the use of such prepared silage in ruminant diets and its impact on milk and meat production on farms.

scholarly journals Pasture persistence: how much is it worth?

2011 ◽  
Vol 15 ◽  
pp. 3-6
Author(s):  
R. Brazendale ◽  
J.R. Bryant ◽  
M.G. Lambert ◽  
C.W. Holmes ◽  
T.J. Fraser
Keyword(s):  
Dry Matter ◽  
Management Practices ◽  
Dairy Farm ◽  
Dairy Farms ◽  
System Model ◽  
Dry Matter Yield ◽  
Farm Profitability ◽  
Farm System ◽  
The Impact ◽  
Different Levels

The farm system model, Farmax Dairy Pro, was used to evaluate the impact of new pastures on dairy farm profitability, assuming a range of pasture yields and qualities, and different levels of persistence in the new pastures, which were established on 10% of the farm annually. Scenarios were tested for Waikato, Taranaki, Canterbury and Southland dairy farm systems. Assuming a $6.50/kg MS milk payment and a response to pasture renewal of 10% in dry matter yield and a 0.6 MJ ME/kg DM increase in quality, increasing persistence from 4 years up to 8 years was modelled to increase dairy farm profitability by $271/ha to $478/ha. Management practices, including selections of cultivars and endophytes, that improve pasture persistence are likely to increase dairy farm profitability. Keywords: dairy farms, modelling, pasture renewal, persistence

scholarly journals Comparative environmental impacts of intensive all-grass and maize silage-supplemented dairy farm systems: a review

2007 ◽  
pp. 137-143
Author(s):  
I.D. Williams ◽  
S.F. Ledgard ◽  
G.O. Edmeades ◽  
R.J. Densley
Keyword(s):  
Dairy Farm ◽  
N Leaching ◽  
Maize Silage ◽  
Dairy Farmers ◽  
Low Protein ◽  
Matter Production ◽  
Increased Risk ◽  
Dairy Systems ◽  
On Farm ◽  
Stocking Rates

Abstract New Zealand dairy farmers are lifting stocking rates and increasing available feed through nitrogen (N) fertiliser applications to pasture, growing maize for silage and other supplementary crops for silage or grazing on-farm, and/or procuring feed supplements off-farm. This has raised concerns about the possibility of increased risk of nutrient losses to waterways and the atmosphere. This paper reviews NZ and overseas data on the integration of maize silage into dairy systems. Maize silage is a low protein forage which helps optimise animal protein intake and reduces N loss. Maize silage-supplemented dairy farms leached more nitrogen per hectare but less per kg milksolids (MS) than intensive all-grass systems. Feeding maize silage on a feedpad and spreading the resulting effluent uniformly over the farm further reduces N leaching. In the Resource Efficient Dairying (RED) trial, total emissions of nitrous oxide (N2O, a potent greenhouse gas) for the maize-supplemented farmlet was 14% lower on a per hectare basis and 22% lower on a kg MS basis than the all-grass system when both received 170 kg N/ha as urea. The increases in maize dry matter production in response to incremental additions of N and water, where production is constrained by these inputs, can be 2-3 times greater than that for pasture. Using a feed and stand-off pad and managing maize growing through minimising tillage effects, determining soil N status at planting and timing N applications appropriately further reduce the environmental impact of maize silage-based dairy systems. Keywords: all-grass, environment, greenhouse gases, intensive dairy systems, maize silage, nitrates

Resource Efficient Dairying trial: measurement criteria for farm systems over a range of resource use

2005 ◽  
pp. 47-52 ◽  
Author(s):  
R.N. Jensen ◽  
D.A. Clark ◽  
K.A. Macdonald
Keyword(s):  
Resource Use ◽  
Dry Matter ◽  
Dairy Farm ◽  
Stocking Rate ◽  
Maize Silage ◽  
Return On Assets ◽  
Pasture Production ◽  
Low Input ◽  
Land Prices ◽  
Management Processes

The aim of the Resource Efficient Dairying (RED) trial is to measure the productivity, economic and environmental effects of different feed inputs and management processes on a dairy farm. This is a longterm systems trial located at Scott Farm (Dexcel Research Farm) established on 1st June 2001 and expected to continue until 2006. Trial design was based on six systems that have an allowance of up to 200 kg nitrogen (N)/ha (excluding the low input treatment). They are: low input (no N fertiliser, heifers grazed-on and 2.3 cows/ha); control (3 cows/ha); standoff (3 cows/ha); low supplement input (5 t dry matter (DM) maize silage/ha, 3.8 cows/ha); moderate supplement input (10 t DM maize silage/ha; 5.2 cows/ha); and high supplement input (15 t DM maize silage + 5 t soymeal/ha; 6.9 cows/ha). The last two systems have irrigation available to boost pasture production. All systems were designed to operate at a common comparative stocking rate (CSR) of 85 kg liveweight (LW)/t DM. Two seasons' data have shown that increasing the stocking rate (SR) by 1.5 cows/ha from 3.8 to 5.3 cows/ha, plus extra feed, increased output by 90 and 184 kg milksolids (MS)/total ha in the two years, when the extra area required to supply the extra feed is included in the calculation of kg MS/ha. However the further increase to 6.9 cows/ha plus extra feed produced less MS/total ha than the system stocked at 3.8 cows/ha. Calculations of economic farm surplus (EFS) and return on assets (ROA) reveal that when the payout is $3.50/kg MS the low input system is competitive irrespective of land price ($18000 or $37000/ha) or supplement cost (18 c or 24 c/kg DM). Conversely at a higher payout of $4.50/kg MS the treatment supplemented with 10 t maize silage DM/ha is competitive over the range of land prices and supplement costs tested. Keywords: dairy cows, economic evaluation, maize silage, milksolids, nitrogen fertiliser, stocking rate

S-peptide-S-protein system. Model for hormone-receptor interaction

1973 ◽  
Vol 6 (5) ◽  
pp. 169-176 ◽  
Author(s):  
Frances M. Finn ◽  
Klaus Hofmann
Keyword(s):  
Hormone Receptor ◽  
System Model ◽  
Receptor Interaction ◽  
S Protein ◽  
Protein System

The Cornell Net Carbohydrate and Protein System model for evaluating herd nutrition and nutrient excretion

2004 ◽  
Vol 112 (1-4) ◽  
pp. 29-78 ◽  
Author(s):  
D.G Fox ◽  
L.O Tedeschi ◽  
T.P Tylutki ◽  
J.B Russell ◽  
M.E Van Amburgh ◽  
...  
Keyword(s):  
System Model ◽  
Nutrient Excretion ◽  
Protein System
Sign in / Sign up

Export Citation Format

Share Document