Effects of grass pasture and concentrate-based feeding systems for spring-calving dairy cows in early spring on performance during lactation

2005 ◽  
Vol 60 (3) ◽  
pp. 310-318 ◽  
Author(s):  
E. Kennedy ◽  
M. O'Donovan ◽  
J.-P. Murphy ◽  
L. Delaby ◽  
F. O'Mara
Keyword(s):  
Dairy Cows ◽  
Early Spring ◽  
Feeding Systems

Rationale of feeding systems for lactating dairy cows

1990 ◽  
Vol 57 (2) ◽  
pp. 151-164 ◽  
Author(s):  
C. Lewis Johnson ◽  
C. Lang Tran
Keyword(s):  
Integral Equation ◽  
Dairy Cows ◽  
Time Course ◽  
Equation Approach ◽  
Lactating Dairy Cows ◽  
Integral Equation Approach ◽  
Biological Concepts ◽  
Feeding Regimen ◽  
Lactation Cycle ◽  
Feeding Systems

SummaryManipulations of the lactation cycle are achieved through nutritional regimens and generally result in a restriction of the physiological lactation cycle. Most models of lactation used in management programmes only describe the average time course of lactation for groups of cows on a given feeding regimen. This is inadequate for the variety of feeding systems in use on British farms. In the present paper several existing models of lactation have been critically evaluated. An integral equation approach has been developed to rationalize experimental observations and currently accepted biological concepts.

Comparison of Calan gate and easy feed systems on the intake of dairy cows

2002 ◽  
Vol 2002 ◽  
pp. 114-114
Author(s):  
C.P. Ferris ◽  
T.W.J. Keady ◽  
F.J. Gordon ◽  
D.J. Kilpatrick
Keyword(s):  
Dairy Cows ◽  
Type System ◽  
Feed System ◽  
Negative Effect ◽  
Daily Allowance ◽  
The Uk ◽  
Research Centres ◽  
Gain Access ◽  
Feed Unit ◽  
Feeding Systems

In many Research Centres in the UK, dairy and beef cattle access their daily allowance of forage, and perhaps concentrates, through Calan gate type feeding systems. As up to four animals may share one feed unit in these systems, only a proportion of animals can gain access to feed at any one time. This may have a negative effect on food intake and subsequent animal performance. The present study was undertaken to evaluate the effects on intake from offering food through a Calan gate type system, compared to a conventional easy feed system.

The responses of high and medium merit dairy cows to diets differing in grass silage: concentrate ratios, during early lactation

1996 ◽  
Vol 1996 ◽  
pp. 5-5
Author(s):  
C.P. Ferris ◽  
F.J. Gordon ◽  
D.C. Patterson ◽  
C.S. Mayne
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Dairy Herd ◽  
Yield Potential ◽  
Genetic Merit ◽  
The Past ◽  
Grass Silage ◽  
The Uk ◽  
Yield Responses ◽  
Feeding Systems

The genetic merit of the UK dairy herd is increasing rapidly and this trend is likely to continue for the forseeable future. With cows of higher milk yield potential and higher nutrient requirements, feeding systems developed in the past with medium genetic merit animals, may now need to be adapted to meet the needs of high genetic merit animals if nutrition x genotype interactions exist. This would be particularly true to increasing proportion of concentrates in grass silage based diets. This study was undertaken to compare the milk yield responses of high and medium merit dairy cows.

scholarly journals Identification of feeding pattern and their impact on milk fatty acid profiles from traditional dairy cows in Pangalengan Sub-district

2022 ◽  
Vol 951 (1) ◽  
pp. 012023
Author(s):  
D Anzhany ◽  
Despal ◽  
T Toharmat ◽  
N Rofiah ◽  
N Nuraina ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Random Sampling ◽  
Large Scale ◽  
Feeding System ◽  
Fatty Acid Profiles ◽  
High Quality ◽  
The Relationship ◽  
Long Chain ◽  
Better Than ◽  
Feeding Systems

Abstract Fatty acids (FA) profiles especially conjugated linoleic acid (CLA) are commonly used to distinguish milk quality. However, its content is very sensitive and tends to change with a different type of feed. The study aims to identify the relationship between the feeding system and milk FA profile in the Pangalengan sub-district. The feeding system and milk FA profiles were studied using two-step post observatory research. Step one, milk was collected from 27 traditional-dairy farms using purposive random sampling and compare with a large-scale farm. The result shows that FA profiles vary greatly among traditional-farms especially for long-chain FA (LCFA) which was found in small concentrations. CLA content was also found higher in traditional-farms. Step two, five traditional-farms with the highest CLA milk content were observed for their feeding systems. Parameter observed including cow’s specification, feed type used, and feed intake. The best ration produced high milk CLA and production was the ration consisted of 38 % high-quality forages and 62 % commercial concentrate. Thus, it can be concluded that milk from traditional farms was better than milk from large-scale farms. The best milk CLA was produced with a combination of 38 % high-quality forages and 62 % commercial concentrate.

Reproduction, mastitis, and body condition scores among spring and fall calving dairy cows in pasture or confinement feeding systems

2001 ◽  
Vol 26 (2) ◽  
pp. 507-510
Author(s):  
S. P. Washburn ◽  
S. L. White ◽  
J. T. Green ◽  
G. A. Benson
Keyword(s):  
Dairy Cows ◽  
Body Condition ◽  
Clinical Mastitis ◽  
Feeding System ◽  
Lower Body ◽  
Maize Silage ◽  
Fall Calving ◽  
Average Body ◽  
Feeding Systems ◽  
Body Condition Scores

AbstractDairy cows in confinement and pasture-based feeding systems were compared across 4 spring-calving and 3 fall-calving replicates for differences in reproduction, mastitis, and body condition scores. Each feeding system and replicate included both Jersey and Holstein cows. Cows in confinement were fed a total mixed ration with maize silage as the base forage along with a variety of concentrates. Cows on pasture were routinely supplemented with concentrates and were provided baled grass and/or legume silage when pastures were limiting. Breeding periods were for 75 days in spring or fall. Reproductive performance did not differ significantly due to feeding system but Jerseys had higher conception rates (59.6 vs. 49.5%) and overall pregnancy rates (78.0 vs. 57.9%) than Holsteins. Cows in confinement had significantly higher rates of clinical mastitis and culling for mastitis than cows on pasture. Within both feeding systems, Jerseys had less mastitis than Holsteins. Average body condition scores were higher for confinement cows than pasture cows except for one replicate. Jerseys maintained higher average body condition scores than Holsteins in all but one replicate. In summary, pastured cows produced less milk and had less mastitis but lower body condition scores than confinement cows. Holsteins produced more milk but were less likely to rebreed, had more mastitis, higher culling rates, and maintained lower body condition scores than Jerseys.

The use of bovine somatotropin (bst) to increase summer milk production

1990 ◽  
Vol 1990 ◽  
pp. 44-44
Author(s):  
D J Roberts ◽  
R J Wells ◽  
D N Logue ◽  
A G Buchanan
Keyword(s):  
Sustained Release ◽  
Dairy Cows ◽  
Milk Production ◽  
Research Work ◽  
Bovine Somatotropin ◽  
Late Winter ◽  
Release Formulation ◽  
Sustained Release Formulation ◽  
Grazing Cattle ◽  
Feeding Systems

Farmers are receiving a price incentive to produce more milk during the summer months. Bovine somatotropin (BST) could be used as a means of increasing milk yield from late winter/spring calving cows during the summer months. However, most of the research work with BST has been with housed cattle on winter feeding systems. The objective of this experiment was to evaluate the use of BST with grazing cattle supplemented with silage as a buffer feed.Thirty-six January to March calving multiparous Friesian dairy cows were allocated to 4 treatments: CG - Control/Grazing, TG - Treated/Grazing, CB - Control/Buffer fed, TB - Treated/Buffer fed. The treated cattle were given 640 mg of recombinantly derived bovine somatotropin (Somidobove Elanco Products Limited) in a sustained release formulation at 28 day intervals. The treatment period at grass lasted for 8 weeks from 18 August 1988. The cattle were then housed for a further 8 weeks in 2 groups of sixteen cows (with one block of cows omitted from the experiment).

The use of production data of feeding studies in lactating dairy cows to validate energy feeding systems

2002 ◽  
Vol 2002 ◽  
pp. 102-102
Author(s):  
T. Yan ◽  
R. E. Agnew ◽  
J. J. Murphy ◽  
C. P. Ferris ◽  
F. J. Gordon
Keyword(s):  
Dairy Cows ◽  
Production Data ◽  
Net Energy ◽  
Calorimetric Data ◽  
Production Studies ◽  
Lactating Dairy Cows ◽  
Metabolisable Energy ◽  
Using Data ◽  
Feeding Systems

There is little information available in the literature on the validation of the currently adopted energy feeding systems developed from calorimetric data, using data obtained in production studies. The objective of the present study was to use production data from feeding studies to validate some metabolisable energy (ME) systems (AFRC, 1990 and 1993; SCA, 1990) and net energy (NE) systems (Van Es, 1978, INRA, 1989; NRC, 2001).

Profitable feeding of dairy cows on irrigated dairy farms in northern Victoria

2006 ◽  
Vol 46 (7) ◽  
pp. 743 ◽  
Author(s):  
W. J. Wales ◽  
J. W. Heard ◽  
C. K. M. Ho ◽  
C. M. Leddin ◽  
C. R. Stockdale ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Nutrient Intake ◽  
Value Added ◽  
Dairy Farms ◽  
The Past ◽  
Operating Profit ◽  
Eastern Australia ◽  
Feed Costs ◽  
Productivity Gains ◽  
Feeding Systems

Milk production per cow and per farm in the irrigated region in northern Victoria have increased dramatically over the past 2 decades. However, these increases have involved large increases in inputs, and average productivity gains on farms have been modest. Before the early 1980s, cows were fed predominantly pasture and conserved fodder. There is now large diversity in feeding systems and feed costs comprise 40–65% of total costs on irrigated dairy farms. This diversity in feeding systems has increased the need to understand the nutrient requirements of dairy cows and the unique aspects of nutrient intake and digestion in cows at grazing. Principles of nutrient intake and supply to the grazing dairy cow from the past 15 years’ research in northern Victoria are summarised and gaps in knowledge for making future productivity gains are identified. Moreover, since the majority of the milk produced in south-eastern Australia is used in the manufacture of products for export, dairy companies have increased their interest in value-added dairy products that better meet nutritional requirements or provide health benefits for humans. Finally, some examples of the impacts of farm system changes on operating profit for some case study farms in northern Victoria are presented to illustrate the need for thorough analysis of such management decisions.

The effect of extending the grazing season in early spring on dairy cow performance

1998 ◽  
Vol 1998 ◽  
pp. 50-50 ◽  
Author(s):  
H.J. Sayers ◽  
C.S. Mayne
Keyword(s):  
Dairy Cows ◽  
Dairy Cow ◽  
Early Spring ◽  
Feeding Period ◽  
Animal Performance ◽  
Grazing Season ◽  
Cow Performance

Previous studies (Mayne and Laidlaw 1995) have shown that early turnout of dairy cows to spring pasture for a few hours per day (extended grazing) reduces silage intake and increases animal performance relative to that of animals retained indoors. The objective of the present study was to assess the effects of grazing severity and/or degree of silage restriction during the indoor feeding period on the response to extended grazing.

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