scholarly journals Meeting the physiological requirements for energy and nutrients to manifest the genetic potential of dairy cattle

2021 ◽  
Vol 941 (1) ◽  
pp. 012036
Author(s):  
S V Moshkina ◽  
A S Kharitonova ◽  
S N Khimicheva ◽  
T Yu Kolganova ◽  
T V Smagina ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Control Group ◽  
Physiological Status ◽  
Feed Supplement ◽  
Dry Period ◽  
Brown Swiss ◽  
Lactating Cows ◽  
Economic Experiment ◽  
Genetic Potential ◽  
Research Period

Abstract The paper presents the results of the scientific and economic experiment for the evaluation of the influence of the energy supplement included in the diet of lactating cows of the Brown Swiss breed. During the research period, all animals were kept in the same conditions, corresponding to zootechnical standards. They were divided into two groups differentiated only by the feed ration. The cows of the first (control) group were given rations typical for the farm corresponding to the feeding norms of dry and lactating cows. For the cows of the second group in the dry period (14 days before calving) the feeding ration was changed with a change in structure towards an increase in the proportion of concentrated feed, and immediately after calving, they received an energy feed supplement to maintain the physiological status of dairy cows after calving. Only clinically healthy animals participated in the experiment. It was revealed that the inclusion of the energy feed supplement in the diet of lactating cows in the experimental groups during lactation led to an increase in the productivity of livestock as compared with those in the control group.

scholarly journals Microelement Supplementation in Dairy Cows by Mineral Lick

2009 ◽  
Vol 78 (1) ◽  
pp. 29-36
Author(s):  
Štěpán Krys ◽  
Eva Lokajová ◽  
Aleš Podhorský ◽  
Leoš Pavlata
Keyword(s):  
Dairy Cows ◽  
Selenium Concentration ◽  
Control Group ◽  
Dry Period ◽  
Total Consumption ◽  
Zn Concentration ◽  
Ad Libitum ◽  
Mn Concentration ◽  
Experimental Group ◽  
Mineral Lick

The aim of this experiment was to verify the option of providing microelement supplementation to dairy cows in the dry period through supplemented mineral lick, and then to compare the content of microelements in the blood, colostrum and milk. The experiment was carried out on a farm with Czech Fleckvieh dairy cows. We formed an experimental group (E), supplied with mineral lick ad libitum enhanced with organic forms of microelements (Se, Zn, Cu, Mn) for four to five weeks before parturition and 1 week after parturition. The control group (C) did not receive any mineral lick. The use of mineral lick by cows was very uneven, its total consumption oscillated between 0 to 250 g of lick per animal per day. Lick feeding did not result in evidential increase of concentrations of monitored microelements in the cows’ blood, colostrum and milk. Only a tendency to increased concentrations of Se and Cu in the blood of group E of cows was observed; the average Se concentration increased by 60 μg l-1 (Cu by 9 μmol l-1), whereas in group C, Se increased only by 30 μg l-1 (Cu by 6 μg l-1). The concentration of microelements in colostrum after parturition dropped quickly. Significant drops were determined for Se, Cu and Zn on the first (for Mn on the second) day after parturition. Selenium concentration in the first colostrum was 5 times higher than in milk, Cu concentration 3 times higher, Zn concentration 4 times higher and Mn concentration 1.3 times higher.

scholarly journals Daytime Grazing in Mountainous Areas Increases Unsaturated Fatty Acids and Decreases Cortisol in the Milk of Holstein Dairy Cows

Animals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3122
Author(s):  
Jalil Ghassemi Nejad ◽  
Bae-Hun Lee ◽  
Ji-Yung Kim ◽  
Kyung-Il Sung ◽  
Hong-Gu Lee
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Dairy Cows ◽  
Milk Fat ◽  
Unsaturated Fatty Acids ◽  
Control Group ◽  
Milk Fatty Acid ◽  
Omega 3 ◽  
Mountainous Areas ◽  
Lactating Cows

The effects of grazing lactating cows in mountainous areas for 12 and 24 h compared with the confined indoor system were evaluated by examining the overall milk fatty acid and cortisol. Twenty-one dairy cows were allocated to three treatment groups: (1) control (confined management system in a free-stall barn; TMR based), (2) grazing for 12 h (12hG; TMR plus grazing pasture), and (3) grazing for 24 h (24hG; pasture-based feeding system). Dry matter intake was higher in the control and 12hG groups than in the 24hG group. The yields of total milk and the 3.5% fat-corrected milk were the lowest in the 24hG group. Milk fat was the highest in the 24hG group and higher in 12hG compared with the control group. Milk protein and lactose levels were the highest in the 12hG group. The highest somatic cell count was observed in the 24hG group. The saturated fatty acid levels were higher in the control group compared with the 12hG and 24hG groups. There was no difference in overall mono-unsaturated fatty acids between 12hG and 24hG groups. Poly-unsaturated fatty acids were higher in the 12hG group compared with the control and 24hG groups. There was no difference in omega-6 (ω-6) fatty acids among the groups, and omega-3 fatty acids were higher in the 12hG group than in the control group. Milk cortisol was the highest in the 24hG group and higher in the control group compared with the 12hG group. Taken together, grazing for 12 h is advisable for farms that have access to mountainous areas to improve the milk fatty acid profile and decrease the stress levels in high-yielding Holstein lactating cows.

scholarly journals PSXIV-5 Results of external use of staphylococcal toxoid for the prevention of mastitis in cows

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 315-315
Author(s):  
Dariya Kashtanova ◽  
Valerii G Skopichev ◽  
Flura Alistratova ◽  
Polina A Polistovskaia ◽  
Nataliya A Panova ◽  
...  
Keyword(s):  
Russian Federation ◽  
Economic Losses ◽  
Economic Damage ◽  
Control Group ◽  
Dry Period ◽  
North West ◽  
Lactating Cows ◽  
The North ◽  
The Russian Federation ◽  
The Cost

Abstract Mastitis in cows in the farms of the Russian Federation cause great economic damage. Economic losses include the cost of treating cows and the cost of recycled milk. In the farms of the North-West region of the Russian Federation mastitis occurs in 20–30% of lactating cows. An important task is to find effective ways to prevent mastitis. The task of our research included the study of the effectiveness of external use of staphylococcal toxoid. For the experiment, 2 experimental groups of dry cows of 10 animals each were formed. For the first group of cows, 5 days before the expected date of calving, an ointment containing staphylococcal toxoid and dimethyl sulfoxide was applied to the area of the milk mirror. Udder treatment was performed once a day for five days. Cows of the second group were immunized with Starvac® vaccine in accordance with the instructions, twice during the dry period. The third group of cows (n = 20) was the control. After calving, the concentration of immunoglobulins in colostrum was examined in all cows. In cows of the first group, the concentration of immunoglobulins G, M and A in colostrum was 8.59 ± 0.9; 1.1 ± 0.13 and 5.42 ± 0.9 g / l, respectively. The concentration of immunoglobulins in cows of the first group was higher, on average, by 1.3–2.0 times in comparison with cows that were given the Starvac vaccine. In comparison with the control group, the growth of all classes of immunoglobulins was determined by 2.2 - 5.2 times (P < 0.01). The results obtained showed high efficacy of external use of staphylococcal toxoid together with dimethisulfoxide.

scholarly journals The impact of the balanced feeding of cows in the dry period on the content of macro- and microelements in colostrum and milk

2019 ◽  
pp. 65-69
Author(s):  
Evgeniy Olegovich Krupin ◽  
Shamil Kasimovich Shakirov ◽  
Mirzabek Gashimovich Zuhrabov
Keyword(s):  
Dairy Cows ◽  
Copper Content ◽  
Phosphorus Content ◽  
Zinc Content ◽  
Control Group ◽  
Dry Period ◽  
The Third ◽  
Combined Use ◽  
Calcium And Phosphorus ◽  
The Impact

The article presents the results of the evaluation of the dynamics of microelements in the colostrum and milk, as well as microelements in milk of dairy cows when used in the composition of the rations they are feeding regulators of metabolism (vitamin-mineral premixes P60-3/2 and P60-3/P, propylene glycol, calcium salts of fatty acids) in accordance with the developed scheme of combined use. Less pronounced decrease of calcium and phosphorus content in milk of animals of the second and third groups is established. On day 30 lactation revealed a significant increase in the content of copper and selenium in individuals of the second (respectively 66.2% (P<0.01) and 65.2% (P<0.05)) and third (respectively 67.2% (P<0.001) and 73.0% (P<0.01)) groups. On the 60th day of lactation in animals of the first group the increase of zinc content in milk was significant and amounted to 6.9% (P<0.05). In cows of the second and third groups, the copper content was significantly higher than in animals of the first group by 60.3% (P<0.01) and 62.6% (P<0.01), respectively. In individuals of the third group the content of selenium was significantly higher than in animals of the control group by 94.2% (P<0.01).

scholarly journals Use of mixed ligand complexes of Zinc, Manganese and Cobalt in feeding highly productive cows during the late dry period

2021 ◽  
Vol 9 (2) ◽  
pp. 87-92
Author(s):  
V. S. Bomko ◽  
Yu. G. Kropyvka
Keyword(s):  
Live Weight ◽  
Mixed Ligand ◽  
The Body ◽  
Mixed Ligand Complexes ◽  
Control Group ◽  
Feed Mixture ◽  
Dry Period ◽  
Lactating Cows ◽  
Feed Costs ◽  
Experimental Group

The results of establishing the optimal feeding doses of Zinc, Manganese, and Cobalt in the form of their mixed-ligand complexes for high-yielding cows of Holstein, Ukrainian Red-Spotted and Ukrainian Black-Spotted dairy breeds during the late dry period were presented, their influence on the future productivity and reproductive qualities of cows were also determined. It was found that lower doses of mixed-ligand complexes of Zinc, Manganese, and Cobalt in the feed mixture stimulated its consumption better. The cows of the 4th experimental group consumed more of the feed mixture, where the concentration of Zinc and Manganese was 35 mg, and Cobalt – 0.49 mg per 1 kg of DM. At various doses of mixed-ligand complexes of Zinc, Manganese, and Cobalt, the increase in live weight in cows of the control group was 24.3 kg, and in the experimental groups, it ranged from 23.7 kg to 26.9 kg, which is 8.6% and 10.7% (P < 0,05) more in the 3rd and 4th groups compared with the control. A decrease in the concentration of mixed-ligand complexes of Zinc, Manganese, and Cobalt in the diets of dry cows in the experimental groups by 10, 20, 30 and 40% had a positive effect on their further milk productivity. During the first 100 days of lactation, they milked 60-180 kg of milk more compared to the control with an increase in fat content by 0.01–0.05%. Also, in the milk of experimental group’s cows, compared with the control, the protein content increased (3.22–3.23% versus 3.14%), and the feed costs per 1 kg of milk in them were lower by 3.5–9.4%. Smaller doses of zinc, manganese, and cobalt contributed better to lengthening the period of prolonged action of their mixed-ligand complexes on the body of lactating cows. The calves’ live weight at the birth in the 4th experimental group exceeded the indicator of their peers from the control group by 2.3 kg or 8.81%, while the calves obtained from cows of the 2nd experimental group prevailed the control by 1.6 kg, or 6, 13 %, from the 3rd experimental group – by 1.8 kg, or 6.90%, and the 4th experimental group – by 1.7 kg, or 6.51%. The duration of the service period in all experimental groups of cows was within the recommended norms and was 87.8 days in the control group, and the 2nd, 3rd, 4th and 5th experimental groups, respectively 84.7 days, 82.2; 80.6 and 83.5 days, respectively, and there was less in control by 3.1–7.1 days or 3.3–8.2%. The insemination index in the cows’ control group was 1.5, and in the experimental one – 1.2–1.4, which is 6.7–20.0% less.

scholarly journals Use of condensed molasses fermentation solubles as an alternative source of concentrates in dairy cows

2021 ◽  
Vol 34 (2) ◽  
pp. 205-212
Author(s):  
Jian Ma ◽  
Chen Ma ◽  
Xue Fan ◽  
Ali Mujtaba Shah ◽  
Jiang Mao
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Nutrient Digestibility ◽  
Immunoglobulin M ◽  
Production Performance ◽  
Control Group ◽  
Microbial Protein ◽  
Lactation Performance ◽  
Alternative Source ◽  
Lactating Cows

Objective: The purpose of present study was to investigate the effects of condensed molasses fermentation solubles (CMS) on lactation performance, rumen fermentation, nutrient digestibility, and serum parameters of dairy cows.Methods: A total of 75 healthy Holstein cows with the same parity (milk production = 35±2.5 kg, body weight = 570±28 kg) were randomly selected and divided into 5 groups. One group served as control group (CON; no CMS), whereas the other 4 groups were CMS1 (accounted for 1% of the diet), CMS2 (2%), CMS3 (3%), and CMS4 (4%). All cows were fed regularly three times each day at 0800, 1600, and 2400 h. Cows received diet and water <i>ad libitum</i>. The experiment lasted for 60 days.Results: Results showed that the dry matter intake, milk yield, and protein of CMS2 were maximum and higher (p<0.05) than CMS4. The ruminal pH was observed less than 6 in CMS3 and CMS4 groups. No noticeable difference of microbial protein was found between CON and CMS2 groups, while the microbial protein in these groups was higher (p<0.05) than CMS3 and CMS4 groups. The apparent digestibility of dry matter, organic matter, and crude protein in CMS2 group was higher (p<0.05) than CMS3 and CMS4 groups. Compared to CMS3 and CMS4 groups, the CMS2 group increased (p<0.05) the serum concentrations of immunoglobulin G and immunoglobulin M on d 60.Conclusion: Therefore, it is practicable that CMS substitutes for a part of concentrates in lactating cows’ diets, but higher addition of CMS (more than 3% of the diet) could decrease production performance of dairy cows as seen in the present study.

Interpretation of cows blood biochemical parameters on rations with the inclusion of corn grain

2021 ◽  
pp. 3-12
Author(s):  
K. V. Kireeva ◽  
N. M. Kostomakhin ◽  
I. A. Pushkaryev ◽  
T. V. Kureninova
Keyword(s):  
Milk Yield ◽  
Biochemical Parameters ◽  
The Body ◽  
Control Group ◽  
Physiological Status ◽  
Lactating Cows ◽  
Blood Biochemical ◽  
Group 5 ◽  
Experimental Group ◽  
Corn Grain

Primary changes in the physiological status of animals can be traced in the deviation from the norm of indicators of a number of substances in biological fl uids, since biochemical indicators are a kind of indicator of processes occurring in the body. Having knowledge of hematological changes in the body of cattle, managers and specialists of livestock farms can manage the productivity and health of highly productive animals. The purpose of the research was to determine and analyze the biochemical parameters of the blood of cows in the dry period and at the increasing the milk yield when wet crushed corn grain was introduced into their ration. The research has been carried out on cows of Black-and-White breed in LLC “Agrofi rma “Urozhai” in the Zonal district in the Altai Territory. During the research the prevalence of productivity indicators of cows of the experimental group over analogues from the control group was proved. Thus average daily milk yield for the accounting period (60 days) it was 30,9 kg, which was 5,2 kg more than the control herdmates (P > 0,95). The total productivity of one head was 1541,57 kg of milk in the control group and 1854,69 kg in the experimental group, which was 313,12 kg more (P > 0,95). It has been found that most of the studied biochemical parameters corresponded to the physiological norm. The exception was the increased content of total protein in the blood of lactating cows of the experimental group 5 g/l above the upper limit of the norm (P > 0,999). A low albumin content in the blood of animals of the experimental group has been noted, and this indicator was signifi cantly lower than that in the control group by 3,45 g/l (P > 0,99). An excess of the physiological norm of globulin in the blood of animals of both groups has been found, the indicators of the experimental group signifi cantly exceeded the control group by 9,5 g/l (P > 0,99). There was a low level of chlorides after the increasing the milk yield 88,1 mmol/l in the control group and 89,2 mmol/l in the experimental group, then excess of manganese after the increasing the milk yield was 4,50 mmol/l in the control group and 8,14 mmol/l in the experimental group, which could be associated with the increased content of this element in feed and soil.

Comparison of different measuring methods for body temperature in lactating cows under different climatic conditions

2016 ◽  
Vol 83 (2) ◽  
pp. 165-172 ◽  
Author(s):  
Stefanie Ammer ◽  
Christian Lambertz ◽  
Matthias Gauly
Keyword(s):  
Body Temperature ◽  
Dairy Cows ◽  
Feed Intake ◽  
Climatic Conditions ◽  
Physiological Status ◽  
Strongly Correlated ◽  
Body Temperatures ◽  
Lactating Cows ◽  
Holstein Friesian ◽  
Friesian Cows

The aim of the research described here was to compare different methods of body temperature (BT) measurements in dairy cows. It was hypothesised that reticular temperature (RET) values reflect the physiological status of the animals in an equivalent way to rectal (RT) and vaginal (VT) measurements. RT, VT and RET temperatures of twelve lactating Holstein–Friesian cows were measured over five consecutive days in June and October 2013. While RT and VT were manually measured three times a day, RET was automatically recorded at 10 min intervals using a bolus in the reticulum. For comparison with RT and VT, different RET values were used: single values at the respective recording times (RET-SIN), and mean (RET-MEAN) and median (RET-MED) values of 2 h prior to RT and VT measurements. Overall, body temperatures averaged 38·1 ± 0·6, 38·2 ± 0·4, 38·7 ± 0·9, 38·5 ± 0·7 and 38·7 ± 0·5 °C for RT, VT, RET-SIN, RET-MEAN and RET-MED, respectively. RT and VT were lower than all RET measurements, while RET-SIN and RET-MED were higher than RET-MEAN (P < 0·001). RET-MEAN and RET-MED values were higher in the morning, whereas RT and VT were greatest in the evening (P < 0·001). Overall, records of RT and VT were strongly correlated (r = 0·75; P < 0·001). In contrast to RET-SIN and RET-MEAN, RET-MED was higher correlated to RT and VT. In June, coefficients were higher between all methods than in October. Relation of barn T to RT and VT was stronger when compared to RET measurements. RET-SIN was higher correlated to barn T than RET-MEAN or RET-MED. Correlation between VT and barn T was strongest (r = 0·48; P < 0·001). In summary, RET-MED showed highest correlation with VT and RT. However, single RET measurements (influenced by water or feed intake) can lead to extreme variations and differences to single VT and RT values.

scholarly journals ​Studies on Cefquinome Sulfate Intramammary Infusion Composited with Varied Excipients for the Prevention of Dairy Cows Mastitis in the Dry Cow Period

2021 ◽  
Author(s):  
Shuzhen Zhou ◽  
Zhichun Gu ◽  
Wuyi Zhou ◽  
Chengying Li ◽  
Hehong Kou ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Somatic Cell ◽  
Clinical Symptoms ◽  
Post Partum ◽  
Residue Analysis ◽  
Release Time ◽  
Control Group ◽  
Dry Period ◽  
Drug Residue ◽  
Cell Counts

Background: The prevention and treatment of dairy cow mastitis during the dry period are crucial for the dairy industry. In this work, 200 dairy cows without mastitis and normal entering dry period were selected and randomly divided into 4 groups, for the first time, to explore the prevention effects using the different formulations of Cefquinome Sulfate Breast Injection with varied excipients. Methods: Three formulations with various excipients were further evaluated based on the drug residue analysis, somatic cell reduction in the milk and clinical symptoms of mastitis. In the control group, cloxacillin benzathine was utilized for comparisons. Result: All three Cefquinome test groups showed a better effect on prevention than the benzathine cloxacillin group in terms of drug release time, post-partum drug residue, reducing somatic cell count and preventing mastitis in the dry period. Various excipients showed slightly different impacts on the drug residues, the changes in somatic cell counts of dairy cows before and after medication. The prevention effects on mastitis from different excipients were similar after 30 d.

Insulin-like growth factor I binding proteins in dairy cows, calves and bulls

1989 ◽  
Vol 121 (1) ◽  
pp. 153-160 ◽  
Author(s):  
Harald Ronge ◽  
Jürg W. Blum
Keyword(s):  
Dairy Cows ◽  
Binding Sites ◽  
Binding Proteins ◽  
Dry Period ◽  
Binding Ability ◽  
Molecular Weights ◽  
Factor I ◽  
Lactating Cows ◽  
Esterified Fatty Acids ◽  
Igf I

Abstract. Our objective was to measure relative amounts and distributions of serum IGF-I binding proteins and concentrations of hormones and metabolites in dairy cows during the dry period and during lactation, as well as in calves and in growing bulls. Concentrations of IGF-I were lower in cows during lactation than during the dry period. Concentrations of IGF-I, growth hormone, insulin, T3, T4 and glucose were higher in calves and bulls as compared with cows, whereas concentrations of non-esterified fatty acids, urea, protein and albumin were lower. Three different IGF-I binding protein fractions were found with apparent molecular weights of >200, 140–160 and 45–65 kD. Relative amounts of IGF-I binding proteins were similar, although great differences in hormones and metabolites were found in cows, bulls and calves. Accessible binding sites were higher in dairy cows than in calves and bulls, mainly owing to the fact that dairy cows had lower concentrations of IGF-I bound to these fractions. Additionally, we found significant negative correlations between total accessible binding sites and total IGF-I concentrations. There were significant differences in the distribution of binding proteins. In particular, there was a shift of binding ability from the 140–160 to the 45–65 kD binding sites from the end of pregnancy to early lactation. Amounts of IGF-I bound to proteins increased from lactating to dry cows and calves and were highest in bulls. IGF-I levels in the >200 kD fraction was lower in lactating than in dry cows, and lower in cows than in calves and bulls. IGF-I measured in the 140–160 kD fraction was lowest in lactating cows and comparable in dry cows, calves and bulls. Concentrations of IGF-I in the 45–65 kD fraction were lowest in cows and highest in bulls. In conclusion, there were marked differences in growing, pregnant and lactating cattle, particularly as concerns accessible protein binding and amounts of IGF-I bound to proteins.

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