scholarly journals Economic Analysis of Offering Different Herbage Allowances to Dairy Cows Fed a Partial Mixed Ration

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1704
Author(s):  
Christie K. M. Ho ◽  
Martin J. Auldist ◽  
Marlie M. Wright ◽  
Leah C. Marett ◽  
Bill Malcolm ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Dairy Cow ◽  
Early Lactation ◽  
Total Milk ◽  
Net Benefits ◽  
Grazing Dairy Cows ◽  
The Cost ◽  
Dairy Cow Nutrition ◽  
Feeding Systems

The economics of grazing dairy cows offered a range of herbage allowances and fed supplements as a partial mixed ration (PMR) were examined where profit was defined as the margin between total milk income and the cost of pasture plus PMR supplement. The analysis made use of milk production and feed intake data from two dairy cow nutrition experiments, one in early lactation and the other in late lactation. In early lactation and at a PMR intake of 6 kg DM/cow per day, the profit from the cows with access to a medium herbage allowance (25 kg DM/cow per day) was AUD 1.40/cow per day higher than that for cows on a low allowance (15 kg DM/cow per day). At a higher PMR intake of 14 kg DM/cow per day, the profit from the cows on a medium herbage allowance was AUD 0.45/cow per day higher than the cows on a low allowance; there was no additional profit from increasing the herbage allowance from medium to high (40 kg DM/cow per day). In late lactation, the profit from the cows fed a PMR with a medium herbage allowance (20 kg DM/cow per day) was only higher than the cows on a low allowance (12 kg DM/cow per day) when the PMR intake was between 6 and 12 kg DM/cow per day. There was also a difference of AUD +0.50/cow per day between the PMR with medium and high herbage allowance (32 kg DM/cow per day). It was concluded that farmers who feed a PMR to dairy cows should offer at least a medium herbage allowance to optimize profit. While feeding additional PMR increases milk production and profit, further gains would be available by offering a higher herbage allowance. These findings provide an estimate of the net benefits of different herbage allowances when feeding a PMR and will enable farmers to manage their feeding systems more profitably.

The relationships between live animal measurements and the physical and chemical composition of dairy cows

1984 ◽  
Vol 1984 ◽  
pp. 38-38
Author(s):  
D.I. Lamont ◽  
D.R. Neilson ◽  
G.C. Emmans ◽  
J. Fraser ◽  
J.H.D. Prescott
Keyword(s):  
Chemical Composition ◽  
Dairy Cows ◽  
Milk Production ◽  
Dairy Cow ◽  
Feed Intake ◽  
Yield Potential ◽  
Early Lactation ◽  
Live Animal ◽  
Data Set ◽  
Physical And Chemical

A knowledge of the chemical composition of the dairy cow is Important in interpreting the interacting influences of body reserves, diet and feed intake on milk production. An investigation has designed to obtain information from a representative sample of Friesian/Holstein cows at different stages of lactation, different ages, and of different yield potential. This information is expensive to collect due to the costs Involved in slaughtering and analysing dairy cows, especially if they are high yielding cows at peak production. The animals used in the investigation have therefore all been Planned culls with sixteen in the later stages of lactation with only three killed in early lactation. It is intended to continue this investigation for several years to obtain a comprehensive data set on the chemical composition of the dairy cow.

scholarly journals Analysis of the yield milk effect on the economics of milk production

2012 ◽  
Vol 48 (No. 10) ◽  
pp. 473-479 ◽  
Author(s):  
P. Kopeček
Keyword(s):  
Cost Function ◽  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Dairy Cow ◽  
Economic Data ◽  
Agricultural Enterprises ◽  
Maximum Profit ◽  
The Cost

Relations between the level of milk yield and the economic results of dairy cows breeding were analysed on the base of operational and economic data received from 135 agricultural enterprises. The analysis was aiming at the optimization of milk production expressed by means of the cost function. By evaluating the above-mentioned relations, there was recorded a tendency of the faster growth of milk yield compared to the costs for market milk for one feeding day of a dairy cow. On the base of the expense function, there was expressed the maximum profit for a litre of market milk, the maximum profit for a dairy cow per year and the interval of profitability of milk production in 2000.

The effect of severity of grazing on milk production of grazing dairy cows

1984 ◽  
Vol 1984 ◽  
pp. 20-20
Author(s):  
C.S. Mayne ◽  
R.D. Newberry ◽  
S.C.F. Woodcock
Keyword(s):  
Organic Matter ◽  
Dairy Cows ◽  
Milk Production ◽  
Dairy Cow ◽  
Rapid Decline ◽  
Rotational Grazing ◽  
Herbage Intake ◽  
Grazing System ◽  
Grazing Dairy Cows ◽  
The Relationship

Hodgson (1975) has shown that herbage intake of the grazing dairy cow is maximised when the daily herbage allowance on offer is equivalent to four times the amount eaten, with a rapid decline in intake when herbage allowance falls below 40g organic matter/kg liveweight/day. This relationship between herbage intake and allowance results from the increasing difficulty of prehending herbage as the sward is grazed closer to the ground. Under a rotational grazing system, the height to which grass is grazed (residual herbage height) is a useful estimate of the amount of herbage available to the grazing animal. The present study was designed to establish the relationship between residual herbage height and milk production.

scholarly journals Effects of Feeding either Red or White Grape Marc on Milk Production and Methane Emissions from Early-Lactation Dairy Cows

Animals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 976 ◽  
Author(s):  
Peter J. Moate ◽  
Joe L. Jacobs ◽  
Josh L. Hixson ◽  
Matthew H. Deighton ◽  
Murray C. Hannah ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Perennial Ryegrass ◽  
Dry Matter ◽  
Control Diet ◽  
Methane Emissions ◽  
Partial Replacement ◽  
Early Lactation ◽  
Grape Marc ◽  
The Cost

Globally, annual production of grape marc (GM), the residue of skins, seeds and stems remaining after making wine, has been estimated to be approximately nine million tonnes. No previous studies have compared effects on milk production and methane emissions when GM from either red or white grapes was fed to dairy cows. This experiment examines the effects of partial replacement of a perennial ryegrass (Lolium perenne L.) based diet with GM from either red or white grapes on yield and composition of milk and methane emissions. Thirty-two Holstein dairy cows in early lactation were offered either a control diet containing 15.0 kg dry matter (DM) of freshly harvested perennial ryegrass and 5.2 kg of a concentrate mix, or a diet similar to the control diet but with 5 kg DM of ryegrass replaced with 5 kg DM of GM from red grapes (RGM), or a diet similar to the RGM diet except the GM was from white grapes (WGM). Individual cow feed intakes, milk yields, and methane emissions were measured. Both diets containing GM decreased milk yields by approximately 10% and methane emissions by 15%. When fed to dairy cows, GM reduces methane emissions but at the cost of decreased milk production.

The effect of energy balance and condition score on early lactation fertility in two genetic lines of Holstein cattle maintained in two contrasting feeding systems

2007 ◽  
Vol 2007 ◽  
pp. 56-56
Author(s):  
G. E. Pollott ◽  
M. P. Coffey
Keyword(s):  
Energy Balance ◽  
Dairy Cows ◽  
Reproductive Performance ◽  
Dairy Cow ◽  
Production Systems ◽  
Body Condition Score ◽  
Early Lactation ◽  
Explanatory Factors ◽  
Condition Score ◽  
Feeding Systems

The ability of high-yielding modern dairy cows to perform in the range of systems found on UK dairy farms, and to be profitable and sustainable, needs investigating. As part of a project to study the robustness of such animals, milk-progesterone profiling was used to investigate the reproductive performance of two genotypes of dairy cow on two production systems (Pollott and Coffey, 2006). In this paper differences in fertility between genotypes and systems was investigated using energy balance (EB) and body condition score (CS) as explanatory factors.

scholarly journals Supplementation with Partially Hydrogenated Oil in Grazing Dairy Cows in Early Lactation

2002 ◽  
Vol 85 (3) ◽  
pp. 580-594 ◽  
Author(s):  
G.F. Schroeder ◽  
G.A. Gagliostro ◽  
D. Becu-Villalobos ◽  
I. Lacau-Mengido
Keyword(s):  
Dairy Cows ◽  
Early Lactation ◽  
Hydrogenated Oil ◽  
Grazing Dairy Cows ◽  
Partially Hydrogenated Oil

The effect of asynchronous diets on the function of the rumen in the lactating dairy cow

1998 ◽  
Vol 1998 ◽  
pp. 19-19
Author(s):  
A.R. Henderson ◽  
P.C. Garnsworthy ◽  
J.R. Newbold ◽  
P.J. Buttery
Keyword(s):  
Protein Synthesis ◽  
Dairy Cows ◽  
Dairy Cow ◽  
Production Performance ◽  
Early Lactation ◽  
Microbial Protein ◽  
Nutrient Flows ◽  
Lactating Dairy Cows ◽  
Overall Efficiency ◽  
Fermentation Parameters

Sinclair et al. (1993) found that a diet formulated to be synchronous with regard to hourly release of nitrogen and energy increased microbial protein synthesis by 14% in sheep. Dairy cows in early lactation experience a shortfall of energy and protein, with available protein determining the overall efficiency of metabolism (MacRae and Lobley, 1986) and subsequent milk production. It is therefore necessary to maximise microbial protein yield during this period. In this study diets were designed for lactating dairy cows to contain the same feed ingredients, but to release nitrogen and energy in the rumen at different times. Rumen fermentation parameters, nutrient flows to the small intestine and production performance were investigated.

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