An evaluation of a high-quality grass silage for milk production

1978 ◽  
Vol 33 (1) ◽  
pp. 5-11 ◽  
Author(s):  
F. J. GORDON ◽  
J. C. MURDOCH
Keyword(s):  
Milk Production ◽  
High Quality ◽  
Grass Silage

Effects of varying silage quality for dry cows on feed intake, weight change and performance in the subsequent lactation

2000 ◽  
Vol 2000 ◽  
pp. 142-142
Author(s):  
R. J. Dewhurst ◽  
D. W. R. Davies ◽  
W. J. Fisher
Keyword(s):  
Milk Production ◽  
Metabolic Activity ◽  
Feed Intake ◽  
Nutrient Supply ◽  
Current Experiment ◽  
High Quality ◽  
Grass Silage ◽  
Silage Quality ◽  
Voluntary Intake ◽  
And Performance

Earlier studies (e.g. Dewhurst et al., 1996, 1999) have shown marked declines in forage voluntary intake as calving approaches. The resultant reduction in nutrient supply may compromise performance in the next lactation, because it coincides with a period of intense metabolic activity in preparation for the next lactation. Feeding concentrates to dry cows did not overcome this problem (Dewhurst et al., 1999). The objective of the current experiment was to investigate alternative dry cow strategies, using only high-quality grass silage, to minimise the severity and consequences for subsequent milk production of the reduction in nutrient supply in this period.

Comparison of dried molassed and unmolassed sugar beet feed and barley at two protein levels for milk production in early lactation

1988 ◽  
Vol 1988 ◽  
pp. 24-24 ◽  
Author(s):  
J.D. Sutton ◽  
S.R. Daley ◽  
M.J. Haines ◽  
D.J. Thomson
Keyword(s):  
Sugar Beet ◽  
Milk Production ◽  
Present Experiment ◽  
Protein Concentration ◽  
Early Lactation ◽  
High Quality ◽  
Protein Levels ◽  
Grass Silage ◽  
By Products

Previous experiments have shown important differences in milk production when mixed starch sources were replaced by mixed high quality by-products in high concentrate diets with hay as the forage (Sutton et al. 1987). The purpose of the present experiment was to compare rolled barley with sugar beet feed (SBF) in both molassed and unmolassed forms when given alone with grass silage in a high-concentrate diet. Additionally the effect of altering protein concentration of the concentrates was examined.

The Effect of Protein Content of the Supplement on Milk Production of Dairy Cattle offered Low and High Digestibility Grass Silage Ad Libitum

1992 ◽  
Vol 1992 ◽  
pp. 40-40
Author(s):  
C S Mayne
Keyword(s):  
Dairy Cattle ◽  
Dairy Cows ◽  
Protein Content ◽  
Lactobacillus Plantarum ◽  
Milk Production ◽  
Crude Protein ◽  
Fresh Weight ◽  
High Quality ◽  
Grass Silage ◽  
Ad Libitum

Previous studies at this Institute have shown a marked interaction between level of supplementary feeding and protein content in the supplement with dairy cows offered high quality grass silage-based diets. For example, a given milk yield or yield of milk constituents can be obtained by offering supplements of high crude protein (CP) content, eg 340 g CP/kg fresh weight, at much lower levels than would be required with conventional supplements with a CP content of 180 g/kg fresh weight. The aim of the present study was to quantify if. the interrelationships established with high digestibility silages also applied with lower digestibility silage.The experiment was carried out with 60 autumn-calving British Friesian dairy cows. Twenty eight animals were offered early cut silage (E), harvested between 17-19 May, with the remaining thirty two animals offered late cut silage (L) harvested between 2-12 June. Both E and L silages were produced from the same swards and in both cases grass was direct harvested and treated with an inoculant of Lactobacillus plantarum, at the rate of 3.0 litres/t fresh herbage.

Preliminary studies on the effect of flavouring agents on the dry-matter intake of silage by lactating dairy cows

1989 ◽  
Vol 112 (1) ◽  
pp. 67-71 ◽  
Author(s):  
R. F. Weller ◽  
R. H. Phipps
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Dry Matter ◽  
Dry Matter Intake ◽  
Feeding Time ◽  
High Quality ◽  
Grass Silage ◽  
Stage Of Lactation ◽  
Lactating Dairy Cows ◽  
Friesian Cows

SummaryIn two trials the effect on D.M. intake of applying flavouring agents to grass silage at feeding time was examined using a total of 89 British Friesian cows in mid to late lactation. The flavouring agent used in Expt 1 was Simax 100 (5 ml/cow per day), while in Expt 2 Palatol (20 ml/cow per day), molasses (0·7 kg D.M./cow per day) and molasses + Talin (0·7 kg D.M./cow per day) were added to both lowand high-quality grass silage.Both Simax (significantly) and Palatol increased silage D.M. intake by an average 0·67 kg/day. The total D.M. intake of the cows fed the molasses and molasses + Talin was similar to that obtained by those receiving the silage treated with Simax and Palatol. However, in the case of the cows receiving the molasses and molasses + Talin, the increased D.M. intake was obtained mainly from the additional molasses and not by an increased silage intake. This result indicates a very low substitution rate for molasses.Although D.M. intake was increased by the addition of flavouring agents, milk production remained unaltered because of the relatively late stage of lactation of the cows in both trials.

Replacing wheat with canola meal and maize grain in the diet of lactating dairy cows: Feed intake, milk production and cow condition responses

2017 ◽  
Vol 84 (3) ◽  
pp. 240-247 ◽  
Author(s):  
Ruairi P McDonnell ◽  
Martin vH Staines
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Fat ◽  
Milk Protein ◽  
Daily Intake ◽  
Canola Meal ◽  
Grass Silage ◽  
Holstein Friesian ◽  
Maize Grain ◽  
The Difference

This research paper describes the effect of partially replacing wheat with maize grain and canola meal on milk production and body condition changes in early lactation Holstein-Friesian dairy cows consuming a grass silage-based diet over an 83-d period. Two groups of 39 cows were stratified for age, parity, historical milk yield and days in milk (DIM), and offered one of two treatment diets. The first treatment (CON) reflected a typical diet used by Western Australian dairy producers in summer and comprised (kg DM/cow per d); 8 kg of annual ryegrass silage, 6 kg of crushed wheat (provided once daily in a mixed ration), 3·6 kg of crushed lupins (provided in the milking parlour in two daily portions) and ad libitum lucerne haylage. The second treatment diet (COMP) was identical except the 6 kg of crushed wheat was replaced by 6 kg of a more complex concentrate mix (27% crushed wheat, 34% maize grain and 37% canola meal). Lucerne haylage was provided independently in the paddock to all cows, and no pasture was available throughout the experiment. The COMP group had a greater mean overall daily intake (22·5vs20·4 kg DM/cow) and a higher energy corrected milk (ECM) yield (29·2vs27·1 kg/cow;P= 0·047) than the CON cows. The difference in overall intake was caused by a higher daily intake of lucerne haylage in COMP cows (4·5vs2·3 kg DM/cow). The CON group had a higher concentration of milk fat (42·1vs39·3 g/kg;P= 0·029) than COMP cows. Milk protein yield was greater in COMP cows (P< 0·021); however, milk fat yield was unaffected by treatment. It is concluded that partially replacing wheat with canola meal and maize grain in a grass silage-based diet increases voluntary DMI of conserved forage and consequently yields of ECM and milk protein.

The effects of plane of nutrition and diet type on metabolic hormone concentrations, growth and milk production in high genetic merit dairy herd replacements

2000 ◽  
Vol 70 (2) ◽  
pp. 349-362 ◽  
Author(s):  
A.F. Carson ◽  
A.R.G. Wylie ◽  
J.D.G. McEvoy ◽  
M. McCoy ◽  
L.E.R. Dawson
Keyword(s):  
Weight Gain ◽  
Milk Production ◽  
Live Weight ◽  
Live Weight Gain ◽  
Genetic Merit ◽  
Grass Silage ◽  
Nutrition And Diet ◽  
Condition Score ◽  
Metabolic Hormone ◽  
Diet Type

AbstractSeventy high genetic merit Holstein heifers were used in two experiments to investigate (1) the effects of plane of nutrition and diet type during the pre-pubertal period and (2) the effects of plane of nutrition during the post-pubertal period on metabolic hormone concentrations, growth and milk production. In experiment 1, treatment 1 and 2 heifers were given food to achieve a live-weight gain of 0·70 and 0·95 kg/day from 3 to 10 months of age on a grass silage based diet, while treatment 3 heifers were given food to achieve 0·95 kg/day on a barley straw/concentrate diet. During the pre-pubertal period, heifers reared on treatment 1 had significantly higher growth hormone(GH) concentrations (ng/ml per 1 h) than heifers reared on treatment 2 (P < 0·01) and had significantly lower insulin concentrations than heifers reared on treatment 3 (P < 0·01). Heifers reared on treatment 1 had significantly lower insulin-like growth factor 1 (IGF-1) concentrations than those reared on treatment 3 (P < 0·01). At 10 months of age heifers reared on treatment 1 were of lower condition score (P < 0·01) than those on treatment 2 and had a smaller heart girth diameter (P < 0·01) than those on treatments 2 and 3. During the first lactation, milk yield and composition produced by the heifers was not significantly affected by treatment. In experiment 2, treatment A heifers were given, from 14 to 24 months of age, a low plane of nutrition to allow a live-weight gain of 0·65 kg/day on a grass silage and grass based diet during the winter and summer periods respectively. Treatment B heifers were kept on a high plane of nutrition to allow a live-weight gain of 0·90 kg/day on the same forage along with concentrate supplementation. During the rearing period, GH and IGF-1 concentrations were not significantly affected by treatment. Treatment A heifers weighed less before calving (P < 0·05), had a lower condition score (P < 0·01), and had a smaller heart girth diameter (P < 0·01) than those on treatment B. During the first 10 weeks of lactation, heifers on treatment A had a higher silage dry matter intake and lost less weight (P < 0·05) than those on treatment B, however, by 20 weeks of lactation these effects had disappeared. Milk yield and composition during the first lactation were not significantly affected by treatment. Overall, the findings of experiments 1 and 2 did not show any beneficial effects of higher weights at first calving in high genetic merit Holsteins and therefore indicate that accelerated growth in the pre- or post-pubertal period may not be required.

A note on seasonal fluctuations in milk production

1972 ◽  
Vol 15 (1) ◽  
pp. 89-92 ◽  
Author(s):  
P. D. P Wood
Keyword(s):  
Seasonal Variation ◽  
Milk Production ◽  
Seasonal Fluctuations ◽  
Grass Silage ◽  
Stage Of Lactation

SUMMARYRecords from 161 lactations completed in the year ended September 1969 were obtained from a herd of British Friesians kept indoors all the year round and fed grass silage with a concentrate supplement. Seasonal variation in milk production from the herd was compared with that from cattle traditionally managed.After allowing for variation due to parity, season of calving, and stage of lactation, there was a tendency for milk production to be stimulated during periods of feeding grass consumed in a rapidly growing state. Seasonal variation was considerably less evident in the indoor herd than in the traditionally managed samples.

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