COMPARISON OF CORN AND OAT BASED CONCENTRATES FOR LACTATING DAIRY COWS

1969 ◽  
Vol 49 (1) ◽  
pp. 85-90 ◽  
Author(s):  
L. J. Fisher ◽  
V. S. Logan
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Dairy Cows ◽  
Milk Production ◽  
Body Weight Loss ◽  
Metabolizable Energy ◽  
Lactating Cows ◽  
Lactating Dairy Cows

Corn-based and oat-based concentrates were each fed with a restricted amount of hay of two qualities to lactating cows. The corn-based concentrate was consumed at a significantly higher rate (P < 0.05), 14.6 vs 11.45 kg/day, and resulted in significantly (P < 0.05) higher solids-corrected milk production, 24.68 vs 20.42 kg/day. Metabolizable energy required per meal of solids-corrected milk produced was significantly greater (P < 0.05) for the corn-based concentrate, 2.48 vs 2.14. However, body weight loss was apparently greater when the oat-based concentrate was fed.

Effects of body weight loss on serum progesterone concentrations of non-lactating dairy cows

2011 ◽  
Vol 75 (1) ◽  
pp. 131-137 ◽  
Author(s):  
R.O. Rodrigues ◽  
C. Trevisanuto ◽  
R.F. Cooke ◽  
J.L.M. Vasconcelos
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Dairy Cows ◽  
Body Weight Loss ◽  
Serum Progesterone ◽  
Lactating Dairy Cows

The effect of dietary crude protein concentration and time of weaning on milk production and body-weight change in the ewe

1974 ◽  
Vol 19 (3) ◽  
pp. 331-339 ◽  
Author(s):  
J. J. Robinson ◽  
C. Fraser ◽  
J. C. Gill ◽  
I. McHattie
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Milk Production ◽  
Weight Change ◽  
Crude Protein ◽  
Body Weight Loss ◽  
Metabolizable Energy ◽  
Body Weight Change ◽  
The Mean ◽  
Incremental Increase

SUMMARYTwenty-seven North Country Cheviot ewes, each carrying twin foetuses and having a mean body weight at 6 weeks prior to parturition of 81 kg were individually penned and offered a constant daily intake of 16·75 MJ metabolizable energy during the last 6 weeks of gestation. At parturition the ewes were allocated to one of three dried grass/concentrate diets containing (1) 10·3, (2) 13·6 or (3) 16·9 % crude protein (CP) and 10 MJ metabolizable energy (ME) per kg. The mean daily CP intakes for diets 1 to 3 were 273, 340 and 415 g respectively and the mean daily ME intake was 25 MJ. Within each level of dietary CP intake the lambs were weaned at either 25, 35 or 41 days of age.There were no significant diet × stage of weaning interactions in milk yield or ewe body-weight change during lactation. The mean daily levels of milk production were 2·4, 2·9 and 3·1 kg for diets 1 to 3 respectively. The corresponding values for ewe body-weight loss were 118, 170 and 265 g per day. When the diet contained 13·8% CP the incremental increase in milk production per unit increase in protein intake was 4·2 g/g. This gave an incremental increase in lamb growth rate of 0·79 g/g and was equivalent to the associated incremental increase in ewe body-weight loss.A reduction in the concentration of CP in the ewes' diet when the lambs are 3 weeks of age may be a useful practical procedure for decreasing milk production and for reducing the body-weight loss of the ewe in a frequent breeding system.

Prediction of body weight and composition in lactating dairy cows: Relationship between body condition score and body composition

2005 ◽  
Vol 2005 ◽  
pp. 19-19
Author(s):  
T. Yan ◽  
R. E. Agnew ◽  
C. S. Mayne
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Dairy Cows ◽  
Milk Production ◽  
Body Condition ◽  
Body Condition Score ◽  
Early Lactation ◽  
Lactating Dairy Cows ◽  
Condition Score ◽  
Body Concentration

Body condition of lactating dairy cows varies at different stages of lactation. Cows usually mobilise their body reserves to provide energy and protein for milk production in early lactation, and gain weight to deposit energy and protein for pregnancy at a later stage. The objective of the present study was to examine relationships between body condition score (CS) and body concentration of lipid, CP and energy.

Feeding diets with fodder beet decreased methane emissions from dry and lactating dairy cows in grazing systems

2017 ◽  
Vol 57 (7) ◽  
pp. 1445 ◽  
Author(s):  
Arjan Jonker ◽  
David Scobie ◽  
Robyn Dynes ◽  
Grant Edwards ◽  
Cecile De Klein ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Perennial Ryegrass ◽  
Pastoral Systems ◽  
Hordeum Vulgare L ◽  
Fodder Beet ◽  
Ch4 Emissions ◽  
Lactating Cows ◽  
Carbohydrate Concentration ◽  
Lactating Dairy Cows

Fodder beet (Beta vulgaris L.) has a very high readily fermentable carbohydrate concentration, which could affect rumen fermentation and reduce enteric methane (CH4) emissions. The objective of the current study was to estimate CH4 emissions from dry dairy cows grazing either fodder beet supplemented with perennial ryegrass (Lolium perenne L.)-dominated pasture silage (6 kg DM/cow/day; FB+Sil) or forage kale (Brassica oleracea L.) supplemented with barley (Hordeum vulgare L.) straw (3 kg DM/cow/day; kale+Str; dry cows, Experiment 1), and from dairy cows in early lactation grazing perennial ryegrass-dominated pasture alone (pasture) or supplemented with fodder beet bulbs (3 kg DM/cow/day; past+FB; lactating cows; Experiment 2). Methane measurements were performed using GreenFeed units (C-Lock Inc., Rapid City, SD, USA) for 40 days in August–September 2015 (Experiment 1) and for 22 days in November–December 2015 (Experiment 2), from 45 and 31 Holstein–Friesian × Jersey dairy cows in Experiments 1 and 2, respectively. Dry cows grazing FB+Sil in Experiment 1 produced 18% less CH4 (g/day) and had 28% lower CH4 yield (g/kg DM intake; P < 0.001) than did cows grazing kale+Str. Lactating cows grazing past+FB in Experiment 2 produced 18% less CH4 and had 16% lower CH4 intensity (g/kg fat and protein-corrected milk production; P < 0.01) than did cows grazing pasture alone, while milk production and composition were similar for the two groups. In conclusion, feeding fodder beet at ~50% and 20% of the diet of dry and lactating dairy cows in pastoral systems can mitigate CH4 emissions.

Meta-analysis on the effects of lipid supplementation on methane production in lactating dairy cows

2008 ◽  
Vol 88 (2) ◽  
pp. 331-337 ◽  
Author(s):  
M. Eugène ◽  
D. Massé ◽  
J. Chiquette ◽  
C. Benchaar
Keyword(s):  
Dairy Cows ◽  
Energy Intake ◽  
Milk Production ◽  
Meta Analysis ◽  
Milk Composition ◽  
Metabolizable Energy ◽  
Scientific Publications ◽  
Lactating Dairy Cows ◽  
Gross Energy ◽  
Lipid Supplementation

A meta-analysis was conducted to statistically determine the effects of lipid supplementation on methane (CH4) production, milk production, and milk composition of lactating dairy cows. For this purpose, a data base was built using seven scientific publications (25 diets) available in the literature and reporting the effects of lipid supplementation on CH4 production, milk production, and milk composition. Lipid supplementation decreased (P < 0.05) dry matter intake (DMI) by 6.4% compared with control diets, whereas production of milk and 4% FCM and milk composition were not changed (P > 0.05). Lipid supplementation decreased (P < 0.05) CH4 production by 9%, either expressed as MJ d-1 or as a percentage of gross energy intake (GEI), digestible energy intake (DEI), or metabolizable energy intake (MEI). This reduction was mainly a consequence of a decreased DMI. Key words: Meta-analysis, lipid supplementation, methane, dairy cows, lactating

THE RESPONSE OF LACTATING COWS AND GROWING HEIFERS TO TREATMENT FOR PARASITES

1982 ◽  
Vol 62 (2) ◽  
pp. 481-486 ◽  
Author(s):  
L. J. FISHER ◽  
A. C. MacNEILL
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Milk Yield ◽  
Milk Fat ◽  
Body Weight Loss ◽  
Anthelmintic Treatment ◽  
Dairy Herds ◽  
Lactating Cows ◽  
Effect Of Treatment ◽  
Production Response

A series of three trials, two with lactating cows and one with growing heifers on pasture, utilized over 200 cows and heifers to establish whether there was a production response to the anthelmintic, "Tramisol" (levamisole phosphate). The lactating cows were subdivided into control and treated animals at parturition. Treated animals were injected with Tramisol on the day following parturition and 8 wk later. Heifers were treated when they were put out to pasture and every 4 wk thereafter. In the first trial with lactating cows there was no effect of treatment on milk yield or milk fat percent but body weight loss was less during the first 84 days for the treated versus control cows. In the second trial with lactating cows, milk yield was higher for total lactation and from 57 to 180 days for the treated cows. Body weight loss was also less during the first 50 days of lactation. There were no differences between the control or treated groups in either number of services required or days open. Heifers injected with Tramisol, when put on pasture, gained more body weight than control animals, particularly during periods of stress. Considering that the parasitic infestation in the herd was low the positive responses observed in these trials, although variable, warranted the conclusion that, in the majority of dairy herds in the area, routine anthelmintic treatment would be beneficial. Key words: Milk yield, growth, dairy cattle, anthelmintic treatment

Effect of genetic merit on postpartum follicular development, milk production, body weight and, insulin and glucose levels in dairy cows

1998 ◽  
Vol 1998 ◽  
pp. 188-188 ◽  
Author(s):  
S.E.M. Snijders ◽  
K. O'Farrell ◽  
M. P. Boland ◽  
P. Dillon ◽  
M. Diskin ◽  
...  
Keyword(s):  
Body Weight ◽  
Dairy Cows ◽  
Milk Production ◽  
Reproductive Performance ◽  
Body Weight Loss ◽  
Growth Patterns ◽  
Ovarian Activity ◽  
Genetic Merit ◽  
Glucose Levels ◽  
Production Body

Efficient milk production in Ireland in both spring and autumn calving herds is very much dependent on compact calving. This requires an early resumption of ovarian activity, high submission rate, and pregnancy rate to service. Since 1984 there has been an increase in the genetic merit of Irish dairy herds. High genetic merit animals have reduced reproductive performance due to the demands of high milk yield (Nebel and McGilliard, 1993) and the loss of body weight and body condition (Butler and Smith, 1989). However, little comparative data on the reproductive performance of dairy cows of different genetic merit are available. The objective of this study was therefore, to determine the relationship between genetic merit of dairy cows and follicular growth patterns, milk production, body weight loss, insulin and glucose levels in early lactation.

scholarly journals Comparative Clinical and Haematological Investigations in Lactating Cows with Subclinical and Clinical Ketosis

2015 ◽  
Vol 38 (2) ◽  
pp. 159-166 ◽  
Author(s):  
Vania Marutsova ◽  
Rumen Binev ◽  
Plamen Marutsov
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Blood Cell ◽  
Body Weight Loss ◽  
Control Group ◽  
Mean Corpuscular Hemoglobin ◽  
Corpuscular Hemoglobin ◽  
Distribution Width ◽  
Subclinical Ketosis ◽  
Lactating Cows

Abstract Ketosis of lactating cows is among the most common metabolic diseases in modern dairy farms. The economic importance of the disease is caused by the reduced milk yield and body weight loss, poor feed conversion, lower conception rates, culling and increased mortality of affected animals. In the present study, a total of 47 high-yielding dairy cows up to 45 days in milk (DIM) are included. All animals were submitted to physical examination wich included checking the rectal body temperature, heart rate, respiratory and rumen contraction rates, and inspection of visible mucous coats. The body condition was scored, and blood β-hydroxybutyrate (BHBA) concentrations were assayed. The cows were divided into 3 groups: first group (control) (n=24) with blood β-hydroxybutyrate level <1.2 mmol/l, second group (n=15) with blood β-hydroxybutyrate between 1.2-2.6 mmol/l (subclinical ketosis) and third group (n=8) with blood β-hydroxybutyrate >2.6 mmol/l (clinical ketosis). Whole blood samples were obtained and analyzed for Red Blood Cell (RBC, 1012/l), Hemoglobin (HGB, g/l), Hematocrit (HCT, %), Mean Corpuscular Volume (MCV, fl), Mean Corpuscular Hemoglobin (MCH, pg), Mean Corpuscular Hemoglobin Concentration (MCHC, g/l), White Blood Cell (WBC, 109/l), Lymphocytes (LYM, 109/l), Monocytes (MON, 109/l), Granulocytes (GRA, 109/l), Red Blood Distribution Width (RDW, %), Red Blood Cell Distribution Width Absolute (RDWa, fl), Platelets (PLT, 109/l) and Mean Platelet Volume (MPV, fl). In this study, deviations in the clinical parameters in the control group and in those with subclinical ketosis were not identified. The cows from the third group (clinical ketosis) exhibited hypotonia, anorexia and body weight loss vs. control group. Hematological analysis showed leukocytosis and lymphocytosis in cows with subclinical ketosis vs. control group. In cows with clinical ketosis WBC counts decreased (leukopenia), while hemoglobin content and hematocrit values are higher vs. control group. Blood BHBA values are higher in both groups of ketotic cows vs. the control group. The other analyzed parameters (RBC, MCH, MCHC, MCV, RDW, RDWa, MON, GRA, PLT and MPV) were close to control values.

Relationships between energy balance and post-partum ovarian activity and fertility in first lactation dairy cows

1996 ◽  
Vol 62 (1) ◽  
pp. 17-23 ◽  
Author(s):  
E. M. Senatore ◽  
W. R. Butler ◽  
P. A. Oltenacu
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Energy Balance ◽  
Dairy Cows ◽  
Post Partum ◽  
Body Weight Loss ◽  
Experimental Period ◽  
Negative Energy ◽  
Ovarian Activity ◽  
Subsequent Fertility

AbstractForty primiparous Holstein dairy cows were monitored from calving through 100 days in milk to evaluate the effect of energy balance in the early post-partum period on subsequent fertility. The post-partum interval to first ovulation (R2 = 0·41; P < 0·005) was lengthened by greater negative energy balance, and reduced by greater body weight at parturition or decreased body-weight loss during the experimental period. Luteal activity (R2 = 0·58; P < 0·0001), measured by plasma progesterone area under curve, was increased in the first cycle post partum by a shorter interval to first ovulation, improved energy balance during the 1st week of lactation and by decreased body-weight loss. Pregnancy status following first artificial insemination was related positively to the number of ovulations before insemination, improved energy balance during the 1st month post partum, fewer days to first ovulation and greater body weight at calving. These data suggest that energy balance and body weight are important in determining the post-partum interval to first ovulation and the subsequent fertility of first lactation dairy cotes.

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