Effect of silage dry matter content and rapeseed meal supplementation on dairy cows. 1. Milk production and feed utilisation

2000 ◽  
Vol 84 (3-4) ◽  
pp. 213-228 ◽  
Author(s):  
T Kokkonen ◽  
M Tuori ◽  
V Leivonen ◽  
L Syrjälä-Qvist
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Dry Matter ◽  
Rapeseed Meal ◽  
Matter Content ◽  
Dry Matter Content ◽  
Feed Utilisation

Experiments on the use of home-grown foods for milk production: I. The effect of war-time changes in the food supply on the nutrient intake and milk production of dairy cows

1944 ◽  
Vol 34 (1) ◽  
pp. 22-26 ◽  
Author(s):  
K. L. Blaxter
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Dry Matter ◽  
Matter Content ◽  
Dry Matter Content ◽  
High Dry Matter ◽  
Time Changes ◽  
The Individual ◽  
Sufficient Food ◽  
Adequate Method

1. An experiment has been conducted with dairy cows to find the effect on milk production of feeding rations with a high dry-matter content—typical war-time rations.2. It was found that where a ration high in dry matter is fed, the cow tends to refuse food, and a statistically significant fall in milk production results. The correlation between the refusal of food, calculated in terms of starch equivalent, and the fall in milk production was 0·959.3. The factors causing this inability of the cow to consume sufficient food to meet her total nutrient requirements have been considered. It has been concluded that dry-matter consumption is not an adequate method of expressing the amount of food a cow will consume, and that the major factor influencing food consumption is the palatability of the individual foods making up the ration.My thanks are due to Dr S. J. Rowland for chemical analysis of the individual foods used in the experiments.

The influence of heavily fertilized grass on mineral metabolism of dairy cows

1970 ◽  
Vol 74 (1) ◽  
pp. 11-21 ◽  
Author(s):  
A. J. Mudd
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Mineral Metabolism ◽  
Matter Content ◽  
Dry Matter Content ◽  
Lactating Dairy Cows ◽  
Dietary Potassium ◽  
Calcium And Phosphorus ◽  
Negative Balance

SUMMARYGroups of lactating dairy cows were fed on grass which had received various amounts of nitrogen and potash fertilizers. In the early part of the season not only was the herbage concentration of calcium and phosphorus lower in grass which had received potash fertilizer but in addition the ‘availability’ of the calcium to cows was depressed. Grass which had received large amounts of nitrogen fertilizer had a comparatively low dry-matter content in the autumn. Cows fed such grass were in negative balance for calcium at this time. As expected high dietary potassium gave rise to high excretion of potassium in the urine which in turn was correlated with high excretion of magnesium. These various factors are likely to affect the incidence of metabolic disease.

scholarly journals RESEARCH OF THE QUALITATIVE COMPOSITION OF MILK OF COWS OF UKRAINIAN BROWN DAIRY BREED

2017 ◽  
Vol 53 ◽  
pp. 185-190
Author(s):  
Y. I. Sklyarenko ◽  
T. O. Chernyavska ◽  
L. V. Bondarchuk
Keyword(s):  
Quality Indicators ◽  
Milk Production ◽  
Dry Matter ◽  
Fat Content ◽  
Matter Content ◽  
Milk Quality ◽  
State Enterprise ◽  
Dry Matter Content ◽  
Qualitative Composition ◽  
Dairy Breed

The aim of the research – is to study the qualitative composition of milk of cows of Ukrainian brown dairy breed in terms of households and in the context of genealogical descent. Method. Research conducted under the conditions of the State Enterprise "Pilot Farm of the Institute of Agriculture of Northern East of NAAS» in Sumy region, Enterprize of Additional Liability “Mayak” in Trostyanetc region, State Enterprise "Pilot Farm Agricultural Firm “Nadiya” of the Institute of Agriculture of Northern East of NAAS» in Romny region. Milk production was assessed by monthly milking control with sampling of milk. Quality indicators measured in the laboratory of the former Sumy State Breeding Center on the equipment of Bentley. We investigated the percentage of fat, percentage of protein, including casein, percentage of dry matter, skimmed residue, contents of somatic cells. Biometric processing of results was carried out by the conventional method (Plohynskoho M.O., 1969), using software Statistica 6.0. The results of the research. Studies have been conducted on the content of fat, protein, casein, lactose and somatic cell count in cow milk. Established difference of qualitative composition of milk of cows depending on the households and on the genealogical origin of the animals. Analysis of our studies indicate that the level of quality indicators of milk production of animals of Ukrainian brown dairy breeds in different farms is significantly different. All the main indicators of quality prevailed in animals of Enterprize of Additional Liability “Mayak”. For the fat content of milk cows of Distinkshna line 159523 were dominated. They though not significantly, but dominated the animals of Eleganta 148551 and Laddi 125640 lines for 0.16% and 0.19% respectively. The substantial significant difference of the content of lactose in the milk of cows of different lines is not set. Animals of Distinkshna line 159523 significantly superior cows of Eleganta 148551 and Laddi 125640 lines for the protein, for 0,24% (P < 0,05) and 0,32% (P < 0,05) respectively. For the casein content they were significantly superior then Laddi 125640 line cows – on 0,24% (P < 0,05). For the dry matter content and skimmed milk residue animals of Distinkshna line 159523 also have the advantage. Conclusions. As a result of studies found that the level of quality indicators of milk production in animals of Ukrainian brown dairy breed in different farms is significantly different. So fat content in milk varies 3,43–3,98%; protein content – 3,10–3,55%; casein content – 2,83–3,31%; dry matter content – 12,4–13,1%, fat-free dry milk residue – 8,95–9,13%. The dependence of milk quality indicators based on linear descent. For the main indices are preferred animals of Distinkshna line 159523.

scholarly journals Effect of the application of bioplexes of zinc, copper and manganese on milk quality and composition of milk and colostrum and some indices of the blood metabolic profile of cows

2008 ◽  
Vol 52 (No. 12) ◽  
pp. 423-429 ◽  
Author(s):  
S. Kinal ◽  
A. Korniewicz ◽  
M. Słupczyńska ◽  
R. Bodarski ◽  
D. Korniewicz ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Metabolic Profile ◽  
Dry Matter ◽  
Calcium Concentration ◽  
First Trimester ◽  
Matter Content ◽  
Dry Matter Content ◽  
Calcium Phosphorus ◽  
Mineral Mixtures ◽  
Positive Effect

The object of an experiment was inorganic and organic forms of zinc, copper and manganese applied in mineral mixtures to dairy cows. The experiment was carried out on 90 cows with average milk yield for previous lactation of about 9 500 kg milk. The cows received mineral mixtures containing inorganic or organic forms of zinc, copper and manganese for 6 weeks before calving and during the first three months of lactation. The application of microelements as bioplexes in amounts covering 30% of daily requirements of cows had a positive effect on an increase in colostrum dry matter content from 20.9 to 23.35% as well as on the concentration of protein and fat, and the level of minerals – calcium, phosphorus, magnesium, zinc and copper. In cows’ milk in the 2<sup>nd</sup> and 3<sup>rd</sup> month of lactation there were no differences in contents of minerals. However in the blood serum of cows in the 1<sup>st</sup> and 2<sup>nd</sup> month of lactation an increase in calcium concentration from 1.96 to 2.14 g/kg was observed while the content of phosphorus also increased average from 1.76 to 2.22 g/kg in the first trimester of lactation.

The effect of interval between harvests and wilting on silage for milk production

1980 ◽  
Vol 31 (1) ◽  
pp. 35-41 ◽  
Author(s):  
F. J. Gordon
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Body Condition ◽  
Dry Matter ◽  
Body Condition Score ◽  
Live Weight ◽  
Experimental Period ◽  
Matter Content ◽  
Blood Analysis ◽  
Dry Matter Content

ABSTRACTSeventy-two British Friesian cows, with a mean calving date of 21 January, were used in a 3 × 2 factorial design experiment to assess the effects of the interval between harvest and wilting on the value of grass silage for milk production. Three regrowth intervals of 5, 7 and 9 weeks were used with each material ensiled both unwilted and after wilting to a dry-matter content of approximately 450g/kg. The six silages were offered ad libitum in addition to 7·6 kg concentrates per day, from day 8 of lactation until 13 April, with a mean experimental period of 67·5 days. The mean intakes of silage dry matter were 11·2, 9·8 and 8·7 kg/day for the 5-, 7 and 9-week regrowth intervals respectively and 9·6 and 10·2kg/day for the unwilted and wilted silages respectively. Regrowth interval significantly affected milk yield with mean yields of 24·7, 24·2 and 22·5 (s.e. 047) kg/day being obtained for the 5-, 7- and 9-week intervals respectively. Wilting significantly depressed milk yield with mean yields of 24·8 and 227 (s.e. 0·39) kg/day being recorded with the unwilted and wilted materials respectively. Live weight at the end of the experiment was not significantly affected by any of the treatments but the rate of live-weight loss, calculated by linear regression over the experiment, and loss in body condition score both significantly increased with increasing regrowth interval. Wilting had no effect on live weight or body condition. Increasing the regrowth interval also significantly reduced the solids-not-fat and protein contents of the milk produced during the final week of the experiment but no other significant effects were recorded on milk composition.Blood analysis data are presented: blood urea was the only component affected by the treatments and decreased significantly as regrowth interval increased.

The Effect of Dry Matter Content of A Straw/Sugar Beet Pulp Mixture Used As A Buffer Feed When Fed to Dairy Cows at Different Stages of Lactation

1994 ◽  
Vol 1994 ◽  
pp. 5-5
Author(s):  
A Hameleers ◽  
T Bronda ◽  
D J Roberts
Keyword(s):  
Sugar Beet ◽  
Dairy Cows ◽  
Dry Matter ◽  
Matter Content ◽  
Design Experiment ◽  
Dry Matter Content ◽  
Stage Of Lactation ◽  
Wide Range ◽  
Beet Pulp ◽  
Friesian Cows

Buffer feeding is a widely used strategy to improve DM intakes from dairy cows at grass. A very wide range of products have been used as buffer feeds resulting in a wide range of responses. Less well understood are which factors are important in explaining these responses. In this experiment the buffer feed characteristic “dry matter content” and the animal factor “stage of lactation” were used as variables in order to gain a better understanding of responses to buffer feeding.Forty Friesian cows, of which 20 were spring calving and 20 autumn calving were used in a continuous design experiment lasting 5 weeks from 3 May until 7 June 1993. The animals were allocated to four treatments on basis of milk yield, liveweight and stage of lactation. The treatments were grazing only (C), grazing and a buffer feed at 30% DM (B30), 50% DM (B50) and 80% DM (B80) and for each treatment half the cows were spring calving (S) or autumn calving (A). The grazing consisted of a 8 ha field of predominantly perennial ryegrass which was split into 4 equal paddocks which were grazed on a daily rotational basis.

Statistical research on the fate of water in the adult cow. II. The lactating cow

1970 ◽  
Vol 75 (2) ◽  
pp. 251-255 ◽  
Author(s):  
R. Paquay ◽  
R. De Baere ◽  
A. Lousse
Keyword(s):  
Milk Production ◽  
Water Intake ◽  
Dry Matter ◽  
Matter Content ◽  
Dry Matter Intake ◽  
Dry Matter Content ◽  
Total Water ◽  
Water Losses ◽  
Daily Milk Production ◽  
Total Water Intake

SUMMARYStatistical tests were made on the data obtained from 100 non-pregnant lactating cows, whose milk production ranged from 4 to 22 kg/day. The cows were kept in metabolism stalls and fed 37 different rations.The authors have studied the correlation between total water intake, faecal and urinary water losses, absorbed and available water and the numerous other factors which were analysed in each of the 37 rations.Total water intake is closely related to the dry-matter intake and the dry-matter content of the diet; it is related also to the composition of the ingested dry matter but is unrelated to the daily milk production.Faecal water losses are closely related to the dry-matter intake and the dry-matter content of the diet; increase of pentosans and crude-fibre intake enhances the losses.Urinary water excretion is related to the amount of absorbed water and to the dry-matter content of the diet; a highly significant correlation exists also between urinary water and urinary nitrogen and potassium. Daily milk production and urinary water are negatively correlated.Water secretion in the milk depends on the dry-matter intake and on its composition; but there is no significant correlation between total water intake and milk water.

A method of collecting faeces from ewes

1961 ◽  
Vol 3 (1) ◽  
pp. 63-64 ◽  
Author(s):  
J. B. Owen ◽  
Jean W. Ingleton
Keyword(s):  
Dry Matter ◽  
Accurate Method ◽  
Matter Content ◽  
Dry Matter Content ◽  
Natural Conditions ◽  
Reliable Estimation ◽  
Feed Utilisation

A Method of estimating grazing intake is essential for studies of feed utilisation in ewes under natural conditions. Since the ewe is a close and selective grazer, methods involving the cutting of comparable grazed and ungrazed areas of the pasture are unlikely to allow reliable estimation of pasture intake. It seems likely that only by a study of the faeces produced can reasonable estimation of individual intakes be made. The first requisite for such estimations is an accurate method of estimating faeces output. Sheep, with their relatively lower and drier faeces output, present fewer problems in total faeces collection than do cattle, which produce large quantities of faeces of a low dry-matter content. The collection of faeces, free from urine, presents a special difficulty in female animals.

EFFECT OF LEVEL OF ALFALFA PELLETS ON INTAKE OF EARLY AND LATE HARVESTED TIMOTHY SILAGES OF DIFFERENT DRY MATTER CONTENT BY DAIRY COWS

1981 ◽  
Vol 61 (3) ◽  
pp. 633-638 ◽  
Author(s):  
P. L. BURGESS ◽  
J. W. G. NICHOLSON ◽  
E. A. GRANT
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Dry Matter ◽  
Milk Composition ◽  
Matter Content ◽  
Holstein Cows ◽  
Dry Matter Content ◽  
Timothy Grass ◽  
Ad Libitum

Two experiments were carried out, using 36 lactating Holstein cows, to determine the effect of three levels (0, 4.5 and 9.0 kg/day) of alfalfa pellets (AP) on the ad libitum consumption of early and late harvested timothy grass silages of different dry matter (DM) content. Cows consumed significantly more wilted than nonwilted silage DM for both the early and late harvested grass, although milk yields were similar for both groups. For the early harvested, wilted and nonwilted silages, feeding AP did not significantly depress silage DM intake until a level of 9.0 kg/day was reached. Total ration DM intake increased significantly with each increment of AP. With the late harvested silages, AP at the 9.0 kg/day level reduced nonwilted silage DM intake while with the wilted silage each increase of AP significantly lowered silage DM intake. Both the 4.5 and 9.0 kg/day of AP increased total DM consumption with the nonwilted silage but 9.0 kg/day of AP was required to significantly increase total DM intake for cows fed the late harvested, wilted silage. Milk yield and milk composition were not changed by the level of AP supplementation or the type of silage fed.

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