Effects of stocking rate on pasture production, milk production and reproduction of supplemented crossbred Holstein–Jersey dairy cows grazing lucerne pasture

2011 ◽  
Vol 168 (1-2) ◽  
pp. 131-143 ◽  
Author(s):  
J. Baudracco ◽  
N. Lopez-Villalobos ◽  
L.A. Romero ◽  
D. Scandolo ◽  
M. Maciel ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Stocking Rate ◽  
Pasture Production

scholarly journals Effect of Stocking Rate on Pasture Production, Milk Production, and Reproduction of Dairy Cows in Pasture-Based Systems

2008 ◽  
Vol 91 (5) ◽  
pp. 2151-2163 ◽  
Author(s):  
K.A. Macdonald ◽  
J.W. Penno ◽  
J.A.S. Lancaster ◽  
J.R. Roche
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Stocking Rate ◽  
Pasture Production

LIME AND DAIRY PRODUCTION

1982 ◽  
pp. 93-103
Author(s):  
N.A. Thomson
Keyword(s):  
Soil Moisture ◽  
Dairy Cows ◽  
Milk Production ◽  
Soil Ph ◽  
Dairy Production ◽  
Pasture Production ◽  
The Third ◽  
One Year ◽  
Plasma Magnesium

In a four year grazing trial with dairy cows the application of 5000 kg lime/ ha (applied in two applications of 2500 kg/ha in winter of the first two years) significantly increased annual pasture production in two of the four years and dairy production in one year. In three of the four years lime significantly increased pasture growth over summer/autumn with concurrent increases in milk production. In the last year of the trial lime had little effect on pasture growth but a relatively large increase in milkfat production resulted. A higher incidence of grass staggers was recorded on the limed farmlets in spring for each of the four years. In the second spring immediately following the second application of lime significant depressions in both pasture and plasma magnesium levels were recorded. By the third spring differences in plasma magnesium levels were negligible but small depressions in herbage magnesium resulting from lime continued to the end of the trial. Lime significantly raised soil pH, Ca and Mg levels but had no effect on either soil K or P. As pH levels of the unlimed paddocks were low (5.2-5.4) in each autumn and soil moisture levels were increased by liming, these factors may suggest possible causes for the seasonality of the pasture response to lime

The effect of sodium fertilisation of pasture on herbage production and the performance of lactating dairy cows

1993 ◽  
Vol 1993 ◽  
pp. 41-41
Author(s):  
A. Cushnahan ◽  
F.J. Gordon
Keyword(s):  
Dairy Cattle ◽  
Dairy Cows ◽  
Recent Work ◽  
Milk Production ◽  
Climatic Conditions ◽  
Present Series ◽  
Optimum Level ◽  
Pasture Production ◽  
Lactating Dairy Cows ◽  
Production Response

Recent work by Chiy and Phillips (1991, 1992) has shown that the application of sodium (Na) fertiliser can produce improvements in pasture growth, pasture composition and the performance of grazing dairy cattle. However other studies have shown much smaller or zero effects in terms of pasture production following Na application (Smithet al., 1983; O'Connoret al., 1989). The objective of the present series of studies was to examine the milk production response to Na fertilisation of pasture under a differing set of soil and climatic conditions and to establish if there was an optimum level of Na input. In addition it was important to pursue the mechanisms of any animal production responses recorded. A series of studies were therefore undertaken to examine: (a) the influence of Na fertilisation of pasture on dairy cattle performance in comparison with any effects obtained through dietary Na supplementation, and (b) the effects of Na on herbage production, composition and digestibility.

scholarly journals Specialist winter milk production from pasture at No. 1 dairy farm, Massey University

1990 ◽  
pp. 85-88
Author(s):  
G.A. Lynch
Keyword(s):  
Milk Production ◽  
Feeding Strategy ◽  
Dairy Farm ◽  
Grassland Management ◽  
Total Production ◽  
Early Lactation ◽  
Stocking Rate ◽  
Gross Margin ◽  
Pasture Production ◽  
Research Problems

Premiums offered by some dairy companies for milk produced in the winter months led No. 1 Dairy Farm at Massey University to explore and instigate alternative options for winter milk production. Options were evaluated in a number of computer models, using information gathered from the farm. Transition to 100% autumn calving began in November 1987. 100% autumn calving improved gross margin from the enterprise and provided opportunities to further research problems inherent to winter milk production. Calving cows in autumn coincides with declining pasture growth. Shortfalls between pasture production and stock requirements in early lactation are filled using conserved pasture. The losses and inefficiencies associated with conserving feed are largely responsible for the lower stocking rate carried and lower total production from the farm. Fertiliser nitrogen and winter-active pasture species assume importance in the feeding strategy on the farm. Keywords winter milk production, grassland management

The effects of stocking rate and nitrogen fertilizer on the productivity of irrigated perennial pasture grazed by dairy cows. 1. Pasture production, utilization and composition

1980 ◽  
Vol 20 (106) ◽  
pp. 529 ◽  
Author(s):  
CR Stockdale ◽  
KR King
Keyword(s):  
Dairy Cows ◽  
Nitrogen Fertilizer ◽  
Animal Health ◽  
Point Of View ◽  
N Fertilizer ◽  
Stocking Rate ◽  
Short Term ◽  
Pasture Production ◽  
Stocking Rates

The effects of stocking rate and nitrogen (N) fertilizer on the productivity of irrigated perennial pasture grazed by dairy cows was studied for 2 years at Kyabram, Victoria. There were ten treatments: five stocking rates ranging from 4.4 to 8.6 cows ha-l at both 0 and 224 kg N ha-1 year-1 . Although weeds did not invade the pasture, increases in stocking rate resulted in reduced daily pasture growth, and this was related to the level of residual pasture after grazing. Annual pasture production in both years declined by 0.394 t DM ha-1 for every additional cow per ha. The levels of the herbage minerals, N, P, K, Ca, Mg and Na were adequate from an animal health point of view at all stocking rates, at least in the short term. The response to N fertilizer declined from 17 to 3 kg DM kg-1 N applied, as stocking rate increased from 4.4 to 8.6 cows ha-1, and it appeared that this response was due mainly to an increase in the growth of the grasses. Apart from the stocking rate responses, which are specific to the Kyabram environment, a number of relations were found, which showed how residual pasture after grazing, pasture allocation and pasture utilization at a single grazing, influenced pasture intake. Providing allowances are made for pasture type and the level to which any particular pasture type can be grazed, these relations could be expected to give a reasonable assessment of pasture intake in other environments.

scholarly journals Effects of high rates of nitrogen fertiliser on dairy pastures and production

1994 ◽  
pp. 27-31 ◽  
Author(s):  
S.L. Harris ◽  
J.W. Penn ◽  
A.M. Bryant
Keyword(s):  
Nitrogen Fixation ◽  
Milk Production ◽  
Trifolium Repens ◽  
Stocking Rate ◽  
Pasture Production ◽  
N Application ◽  
Nitrogen Fertiliser ◽  
Nitrogen Fixation Activity ◽  
Clover Content ◽  
Clover Plant

High rates of nitrogen (N) fertiliser (217 and 324 kg N/ha/y) applied during a farrnlet study at No. 2 Dairy, DRC, Hamilton increased annual net herbage accumulation by 23% and 27% respectively. Increases in feed conservation and milk production reflected the extra pasture growth. On low stocked (3.2 cows/ha) farmlets where 219 and 330 kgN/ba/yr were used, clover contents declined to 12.5% and 3.4% respectively compared with 22.8% where no N was used. Decreased clover content was probably a result of competition from increased growth of ryegrass. At the high stocking rate (4.5 cows/ha), N application resulted in clover contents of 19.6% and 7.9% respectively, compared with 23.8% where no nitrogen was used. Pasture utilisation was better on these fannlets than under the lower stocking rate, suggesting the improved utilisation of additional feed, particularly during spring, was responsible for the higher clover content. Nitrogen fixation activity was lower in pastures which received N fertiliser due to both the decreased clover content and a reduction in activity per clover plant. Keywords: conservation, dairying, milk production, nitrogen fertiliser, pasture production, Trifolium repens

Simplified rotational grazing management of dairy cows: effects of rates of stocking and concentrate

1991 ◽  
Vol 116 (3) ◽  
pp. 417-428 ◽  
Author(s):  
A. Hoden ◽  
J. L. Peyraud ◽  
A. Muller ◽  
L. Delaby ◽  
P. Faverdin ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Grazing Management ◽  
Stocking Rate ◽  
Rotational Grazing ◽  
Yield Improvement ◽  
Concentrate Supplementation ◽  
Stocking Rates

SUMMARYAn experiment was carried out in Normandy between 1986 and 1988 over c. 6 months in each year, using a simplified rotational grazing technique (two paddocks in spring, four in autumn) with a total of 162 high-yielding cows (mean milk yield of 30·0 kg/day at turn-out). Three stocking rates, designated control (C: 2·3 cows/ha over the total area of the system), moderate (M: 2·6 cows/ha = 115% of C) and high (H: 3·0 cows/ha = 130% of C), were compared at two rates of concentrate supplement, 3·7 kg/cow per day and 0·5 kg/cow per day. Individual milk yield differed by a non-significant 5% between the extreme stocking rates (21·3 v. 20·3 kg fat-corrected milk (FCM) for treatments C and H, respectively). Milk production/ha was 23% greater in the H treatment (9816 v. 7970 kg FCM for H and C, respectively). Concentrate supplementation led, on average, to a 9% milk yield improvement (21·8 v. 20·0 kg FCM for high and low rates, respectively), i.e. a mean efficiency of 0·6 kg FCM/kg supplement. This response tended to be greater in the higher-yielding cows and for the high stocking rate. The sward measurements contributed to a better understanding of herbage utilization by the cows.

Effect of the stocking rate and buffer feeding to grazing dairy cows in early and mid season on milk production.

2001 ◽  
Vol 28 (2) ◽  
pp. 89-102 ◽  
Author(s):  
Antonio Hargreaves ◽  
◽  
Oscar Strauch ◽  
Nolberto Teuber ◽  
◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Stocking Rate ◽  
Grazing Dairy Cows
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