Duration of a severe feed restriction required to reversibly decrease milk production in the high-producing dairy cow

2007 ◽  
Vol 87 (3) ◽  
pp. 455-458 ◽  
Author(s):  
Chanelle A. Toerien ◽  
John P. Cant
Keyword(s):  
Dairy Cows ◽  
Key Words ◽  
Milk Production ◽  
Milk Yield ◽  
Dairy Cow ◽  
Milk Protein ◽  
Holstein Cows ◽  
Plasma Metabolites ◽  
Feed Restriction ◽  
Post Trial

To establish the duration of a severe feed restriction necessary to reversibly decrease milk production in high-producing Holstein cows, milk, plasma and urine parameters were assessed every 6 h during a 24-h restriction and 18-h refeed period. The 24-h restriction decreased yields of milk, protein and lactose by more than 30% without inducing ketosis or impairing milk production post-trial. Key words: Feed restriction, dairy cows, milk yield, plasma metabolites

Intraruminal administration ofMegasphaera elsdeniimodulated rumen fermentation profile in mid-lactation dairy cows

2011 ◽  
Vol 79 (1) ◽  
pp. 16-25 ◽  
Author(s):  
Qendrim Zebeli ◽  
Sarah J Terrill ◽  
Alberto Mazzolari ◽  
Suzanna M Dunn ◽  
Wen Z Yang ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Dairy Cows ◽  
Milk Yield ◽  
Volatile Fatty Acids ◽  
Rumen Fluid ◽  
Plasma Concentrations ◽  
Rumen Fermentation ◽  
Holstein Cows ◽  
Plasma Metabolites ◽  
Fermentation Profile

This study evaluated the effects of intraruminal administration ofMegasphaera elsdeniion ruminal fermentation patterns, the profile of plasma metabolites, and milk yield and composition of mid-lactation dairy cows. Eight primiparous, ruminally cannulated Holstein cows were arranged in a paired 2×2 crossover design. Cows were randomly assigned to one of two treatments: 1) intraruminal inoculation of 35 ml suspension per day ofM. elsdeniiATCC 25940 (MEGA), containing 108cfu/ml of bacteria, dissolved in 35 ml of saline (0·15m), or 2) carrier alone (35 ml saline; CTR). Both postprandial and preprandial rumen volatile fatty acids (VFA) and plasma metabolite measurements were analysed. Postprandial VFA patterns were affected the most, with butyrate (P<0·01) and valerate (P<0·01) proportions increasing, and acetate (P<0·01), isobutyrate (P=0·05) and isovalerate (P<0·01) decreasing in MEGA cows. Preprandial data measured at various days showed that MEGA dosage tended to increase the molar proportion of propionate (P=0·09) and lower the acetate to propionate ratio (P=0·07) in the rumen fluid. There was no effect of treatment on rumen pH and on the concentration of lactate in the rumen as well as on selected preprandial plasma metabolites. Postprandial plasma concentrations of cholesterol tended to increase (P=0·07) in MEGA cows compared with CTR. Concentrations of non-esterified fatty acids (NEFA) in the plasma were lower in MEGA cows after the morning feeding (P<0·01). Sampling hour also affected plasma NEFA in this study. Plasma β-hydroxybutyrate (BHBA) were not affected by the treatment (P>0·05); however, after the morning feeding BHBA concentration was increased in both groups of cows. Dry matter intake and milk yield and composition were not affected by treatment. In conclusion, results indicate thatM. elsdeniihas the potential to modulate the rumen fermentation profile in mid-lactation Holstein cows, but these effects were only slightly reflected in changes in plasma metabolites and milk composition.

The effects of feeding different starch sources and concentrations on milk production of high yielding Holstein cows

2001 ◽  
Vol 2001 ◽  
pp. 192-192
Author(s):  
R.E. Lawson ◽  
A.R. Moss ◽  
C. Rymer ◽  
J.S. Blake
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Feed Intake ◽  
Protein Concentration ◽  
Milk Protein ◽  
Milk Composition ◽  
Starch Concentration ◽  
Maize Grain ◽  
Ground Wheat

Mansbridge (1995) reported that replacing ground wheat with a mix of ground wheat and maize grain increased milk protein concentration, which led the authors to speculate that increased inclusion of maize grain increased rumen by-pass starch. Indeed, de Visseret al(1990) reported that feeding less rapidly degradable starches has led to increased milk protein concentration.The objective of this study was to examine the effects of starch concentration and source on feed intake, milk yield and milk composition of dairy cows.

Differences in the behaviour of high and low yielding dairy cows selected by genetic merit

2002 ◽  
Vol 2002 ◽  
pp. 220-220 ◽  
Author(s):  
M.D. Cooper ◽  
D. R. Arney ◽  
C. J. C. Phillips
Keyword(s):  
Coping Strategies ◽  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Dairy Cow ◽  
Detrimental Effect ◽  
Genetic Merit ◽  
High Nutrient

The effects of high milk yields on the behaviour and welfare of the dairy cow are unclear. A high milk yield increases the need to consume sufficient fodder in an attempt to meet high nutrient demands. The failure to meet the demands may result in persistent hunger in the dairy cow having to modify her behaviour by employing various coping strategies. These modifications may help the cow overcome a state of hunger but at the expense of being unable to express other important behaviours. The objective of this study was therefore to determine whether the behaviour and welfare of the genetically high yielding dairy cow is being compromised by the increased nutritional demands of milk production, and to investigate the possibility that an increased amount of time spent in food-directed behaviours may have a detrimental effect on the time available to perform other important behaviours.

Consequences for reproductive function of metabolic adaption to load

1999 ◽  
Vol 24 ◽  
pp. 99-112 ◽  
Author(s):  
R. Webb ◽  
P. C. Garnsworthy ◽  
J. G. Gong ◽  
R. S. Robinson ◽  
D. C. Wathes
Keyword(s):  
Energy Balance ◽  
Dairy Cows ◽  
Milk Production ◽  
Direct Effect ◽  
Milk Yield ◽  
Dairy Cow ◽  
Reproductive Function ◽  
Negative Energy ◽  
Follicular Growth ◽  
Embryo Survival

AbstractAn effective method for enhancing milk production efficiency in dairy cows is to increase milk yield and significant progress has been achieved through intense selection, assisted by the application of new reproductive techniques. However this increased milk yield has been accompanied by a slow but steady decline in dairy cow fertility. The two main reasons for this reducing level of fertility appear to be selection for increased milk yield and large herd sizes, although the affect of the introduction of Holstein genes needs to be investigated. In addition, other negative consequences such as an increase in the incidence of metabolic diseases and lameness have been observed. This has given rise to public concern that the high-yielding dairy cow may be under a state of metabolic stress during peak lactation and therefore the welfare and performance of other body functions are compromised.The reason for this decline in fertility is not well understood, although a nutritional influence on the initiation of oestrous cycles, follicular growth, oocyte quality and early embryonic development has been implicated. In early lactation dietary intake is unable to meet the demands of milk production and most cows enter a period of negative energy balance. Negative energy balance has a broadly similar effect to undernutrition leading to a mobilization of body reserves. Furthermore diets high in rumen degradable protein lead to an excess of rumen ammonia, which before it is converted to urea by the liver and excreted in the urine, may cause an alteration in the reproductive tract environment reducing embryo survival. Such major changes in the metabolic and endocrine systems can therefore influence fertility at a number of key points.Possible reproductive sites where inadequate nutrition may have detrimental effects include: (i) the hypothalamic/pituitary gland where gonadotropin release may be impaired; (ii) a direct effect on the ovaries, where both follicular growth patterns and corpus luteum function may be directly influenced; (iii) the quality of the oocyte prior to ovulation may be reduced and coupled with an inadequate uterine environment will result in reduced embryo survival and (iv) there may be effects on subsequent embryo development. The initiation of normal oestrous cycles post partum is usually delayed in dairy cows with a higher genetic merit for milk production, confirming that intense selection towards high milk yield can compromise reproductive function. In addition, the effects of increased milk yield may include changes in circulating GH and insulin concentrations, which in turn alter both insulin-like growth factor (IGF) and IGF binding protein production. Nutrition has recently been shown to have a direct effect at the level of both the ovaries and the uterus to alter the expression of these growth factors.In conclusion, further knowledge is required to determine how the metabolic changes associated with high milk output reduce fertility. Identification and understanding of the mechanisms involved and the key sites of action responsible for compromised reproductive function, will enable the identification of possible indices for future multiple-trait selection programmes.

Milk production, peripartal liver triglyceride concentration and plasma metabolites of dairy cows fed diets supplemented with calcium soaps or hydrogenated triglycerides of palm oil

2009 ◽  
Vol 77 (2) ◽  
pp. 151-158 ◽  
Author(s):  
Roland G Karcagi ◽  
Tibor Gaál ◽  
Piroska Ribiczey ◽  
Gyula Huszenicza ◽  
Ferenc Husvéth
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Palm Oil ◽  
Milk Fat ◽  
Post Partum ◽  
Negative Energy ◽  
Plasma Metabolites ◽  
Control Group ◽  
Liver Triglyceride

The aim of the study was to test the effect of rumen-inert fat supplements of different chemical forms or containing different unsaturated/saturated (U/S) fatty acid contents on milk production, milk composition and liver and blood metabolic variables of high-yielding dairy cows in the peripartal period. Thirty Holstein-Friesian dairy cows were divided into three equal groups and fed a corn silage-based diet, without fat supplementation (control) or supplemented with 11·75 MJ NEl per day of calcium soaps of palm oil fatty acids (CAS; U/S=61/39) or with 11·75 MJ NEl per day of hydrogenated palm oil triglyceride (HTG; U/S=6/94). Each diet was fed from 25±2 d prior to the expected calving to 100±5 d post partum. Compared with the control, both CAS and HTG supplementation resulted in an increase of the average milk yield. Milk fat content and fat-corrected milk yield were higher in the HTG group but lower in the CAS group than in the control group. In all groups liver triglyceride concentrations (TGL) increased from 15 d prepartum to 5 d post partum, and then decreased thereafter. At 5 d TGL was lower in the HTG group than control or CAS cows. No significant differences were detected in TGL among dietary treatments at 15 d prepartum and 25 d post partum. Higher plasma glucose and insulin and lower non-esterified fattay acids and β-hydroxybutyrate concentrations and aspartate aminotransferase activity were measured in the HTG group than in the control or CAS groups at 5 d or 25 d post partum. Our results show that HTG may provide a better energy supply for high-yielding dairy cows in negative energy balance than CAS around calving.

scholarly journals Effect of winter pasture residuals' and grazing- off on subsequefit milk production and pasture performance

1994 ◽  
pp. 55-59
Author(s):  
D.A. Clark ◽  
W. Carter ◽  
B. Walsh ◽  
F.H. Clarkson ◽  
C.D. Waugh
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Reproductive Performance ◽  
Dairy Cow ◽  
Milk Protein ◽  
Late Spring ◽  
Composition And Structure ◽  
Winter Grazing ◽  
The Mean ◽  
Pasture Productivity

Concern at the effect of winter pasture residuals on pasture productivity led to the comparison of different wintering systems at the DRC No. 3 Dairy from May-December 1993. Three farmlets were designed to have 2000 kg DM/ha average farm cover at calving, but with pastures grazed to either 900, 1400 or 1800 kg DM/ha at least once during the winter. A fourth farmlet was spelled from grazing from 25 May-4 July to give an average farm cover at calving of 2900 kg DM/ha. Pasture regrowth, composition and structure, milk yield, liveweight and reproductive performance were measured. A simulation model UDDER was used to generalise from the specific experimental results. Pasture regrowth in July-August was greater on the wintering-off treatment than those grazed during winter, but treatment differences in late spring were inconsistent. Wintering-off decreased ryegrass tiller and white clover growing point densities in August but differences had disappeared by November. Winter grazing treatment had no effect on any component of milk production from calving to late October. From late October until m&December-milk-protein-and.milksolids y i e l d were less on the wintering-off treatment than the mean of the other three treatments (0.62 vs 0.68 kg/cow/day) and (1.49 vs 1.59 kg/cow/day), respectively. Grazing to different winter pasture residuals had no consistent effects on subsequent pasture productivity, composition or milk yield. Simulation showed that wintering-off can lead to increased milksolids production when average farm cover in September is predicted to fall below 1750 kg DM/ha. Timing and amount of conservation become c&i&i1 slfterwintering;off if pasture quality and hence milk production are to be maintained in late spring. Keywords: dairy cow, milksolids, milk yield, pasture regrowth, pasture residual, pasture structure

Milk production from dairy cows fed an alternative to fish meal

1999 ◽  
Vol 1999 ◽  
pp. 204-204
Author(s):  
R.D. Allison ◽  
P.C. Garnsworthy
Keyword(s):  
Amino Acids ◽  
Dairy Cows ◽  
Milk Production ◽  
Dairy Cow ◽  
Vegetable Protein ◽  
Milk Protein ◽  
Fish Meal ◽  
Negative Image ◽  
Milk Protein Content ◽  
The Ideal

Inclusion of fishmeal in diets fed to dairy cows has been found to increase milk yield and milk protein content (Pike et al 1994). This is thought to be the result of increased intake of DUP. However, its inclusion in dairy rations is limited by its relatively high cost in addition to the negative image of feeding protein derived from animal sources in the light of the recent BSE crisis. The literature contains many instances where no response has been found to increasing DUP supply by feeding protected vegetable protein. The lack of response could be attributed to an unbalanced amino acid composition of DUP (Schingoethe 1996). This study was designed to observe the effects of replacing a proportion of cereal with either fish meal or a protected protein blend (Amino Green™, Nutec Ltd, Lichfield) formulated to supply the ideal balance of amino acids for milk production in a high yielding dairy cow.

A new cactus variety for dairy cows in areas infested with Dactylopius opuntiae

2019 ◽  
Vol 59 (3) ◽  
pp. 479 ◽  
Author(s):  
C. C. F. Monteiro ◽  
M. A. Ferreira ◽  
A. S. C. Véras ◽  
S. I. Guido ◽  
M. P. Almeida ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Dairy Cow ◽  
Nutrient Digestibility ◽  
Apparent Digestibility ◽  
Microbial Protein ◽  
Neutral Detergent Fibre ◽  
Lactating Cows

Spineless cactus is an important part of dairy cow diet in the semiarid Brazilia. Severe infestation of cochineal (Dactylopius opuntiae Cockerell) destroyed a vast area of the most common species of cactus planted in the region; Opuntia ficus-indica Mill. resistant varieties with superior agronomic performance were recently selected, but they still need to be tested with dairy cows. We evaluated the use of a resistant variety, ‘Orelha de Elefante Mexicana’ (OEM, Opuntia spp.), in dairy cow diet. We tested its effect on intake, nutrient digestibility, microbial protein, blood parameters and performance of lactating cows. Ten cows with an average milk yield of 20 kg/day were assigned to an experiment using a double 5 × 5 Latin square design. The experimental diets consisted of five replacement levels of Nopalea cochenillifera Salm Dyck cv. (‘Miúda’) by ‘OEM’ (0%, 25%, 50%, 75% and 100%) on a dry-matter (DM) basis) and were formulated considering the ingredient composition. The roughage:concentrate ratio was 70:30 on a DM basis. The replacement of ‘Miúda’ by OEM did not change the intake (kg/day) of DM (18.0), organic matter (16.3), crude protein (CP, 2.8), total digestible nutrients (11.6), non-fibre carbohydrates (7.6) and neutral detergent fibre (5.7), or the apparent digestibility (g/kg) of DM (655), organic matter (694), CP (739) and non-fibre carbohydrates (950), whereas apparent digestibility of neutral detergent fibre increased linearly. Microbial protein production (1.5 g/day), microbial protein efficiency (129.2 g CP/kg total digestible nutrients), plasma urea nitrogen (21.4 mg/dL), nitrogen balance (123 g/day), feed efficiency (1.1), nitrogen efficiency (0.2), milk production (20.0 kg/day), fat-corrected milk production (20.1 kg/day) and milk composition were not influenced by the replacement. Therefore, we recommend the use of OEM in the diet of lactating cows with an average milk yield of 20 kg/day.

scholarly journals Effects of mammae hand massages on oxytocin release, milk yield, and milk quality in dairy cows

2021 ◽  
Vol 19 (3) ◽  
pp. 311
Author(s):  
Inggit Kentjonowaty ◽  
Achmad Bagus Adhiluhung Mardhotillah ◽  
Trinil Susilawati ◽  
Puguh Surjowardojo
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Milk Fat ◽  
Milk Protein ◽  
Block Design ◽  
Fat Content ◽  
Milk Quality ◽  
Randomized Block Design ◽  
Oxytocin Release

<p class="MDPI17abstract"><strong>Objective: </strong><span lang="EN-GB">The objective of this study was conducted to evaluate the effects of Mammae Hand Massages (MHM) on oxytocin release, milk yield, and milk quality in dairy cows.</span></p><p class="MDPI17abstract"><strong>Methods: </strong><span lang="EN">Twelve dairy cows with the following criterion: 5-yr-old, 1st to 9th month of lactation, and average body weight of 390 ± 5.55 kg were used. Cows were assigned in a randomized block design with 4 treatments, i.e T0 (without massage), T1 (MHM for 20 s), T2 (MHM for 50 s), and T3 (MHM for 80 s). Oxytocin release, milk yield, and milk quality were measured accordingly</span><span lang="EN-GB">.</span><strong></strong></p><p class="MDPI17abstract"><strong>Results: </strong><span lang="EN">The data obtained were analyzed using analysis of variance (ANOVA). The results showed that MHM had a very significant effect on milk production (P &lt;0.01) as evidenced by the MHM 50 s treatment obtained the highest average milk production (13.08 ± 3.38 liters/head/day) compared to the MHM 20 s, MHM 80 s and control. MHM (1-1.6 volts) for 50 s resulted in the highest release of oxytocin (0.22955 pcg/0.1mL) at 240 seconds compared to control, MHM 20 s and 80 s. Likewise, the percentage of milk protein content (2.96 ± 0.03) and milk fat content (4.27 ± 0.70) was highest at MHM 50 s</span><span lang="EN-GB">.</span><strong></strong></p><strong><span>Conclusions: </span></strong><span lang="EN">It can be concluded that MHM (1-1.6 volts) for 50 seconds increases the release of oxytocin, milk production, and milk quality in terms of the percentage of milk protein and fat content</span><span lang="EN-GB">.</span>

scholarly journals Effect of relocation and sire lineage on behaviour and milk yield of dairy cows

2013 ◽  
Vol 56 (1) ◽  
pp. 208-215
Author(s):  
J. Broucek ◽  
M. Uhrincat ◽  
Z. Palkovicova ◽  
V. Tancin ◽  
A. Hanus
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Milk Yield ◽  
Holstein Cows ◽  
Opposite Trend ◽  
Maintenance Behaviour

Abstract. The objective of the present study was to analyse the maintenance behaviour of cows after shift from tie-stall barn to free-stall barn. The activities were analysed in relation to the time of moving of the cows. Forty-one Holstein cows were used. Cows were observed for three 24-h (first, second and tenth day) periods after moving into the new barn with free-stall housing. The shortest times of lying and ruminating were recorded at the first day after relocation (336.3 min, 628.0 min, 756.1 min, P<0.001; 318.0 min, 325.0 min, 440.5 min, P<0.001). The longest time was recorded for the duration of standing (1 103.7 min, 811.9 min, 683.9 min, P<0.001). The period’s number of lying and ruminating were the lowest at the first day and highest at the tenth day after relocation (7.34, 14.07, 16.34, 14.32, 15.75, 18.58, P<0.001). The opposite trend was found in the period’s number of feeding and standing (17.46, 12.73, 9.54 and 24.93, 18.19 and 12.41; P<0.001). Sires progeny was significantly manifested in times of total lying, standing (P<0.05) and feeding (P<0.01) as well as in the number of lying periods (P<0.05). Cows produced significantly less milk at the first day after removing than the last day before (23.76 kg vs. 30.97 kg, P<0.001). Milk yield returned towards basal levels at the 13th day (31.82 kg). Milk production was different among sires.

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