scholarly journals PSIX-13 Influence of an integrated fodder additive on productivity and metabolic homeostasis of dairy cattle in transition period

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 416-416
Author(s):  
Daria A Nikanova ◽  
Evgenia Kolodina ◽  
Olga Artemyeva ◽  
Yuri Fomichev
Keyword(s):  
Blood Serum ◽  
Dairy Cows ◽  
Milk Yield ◽  
Transition Period ◽  
Ketone Bodies ◽  
Feed Additives ◽  
Biologically Active ◽  
Bacterial Cells ◽  
Vitamin Deficiencies ◽  
The Third

Abstract The transition period is the most stressful for dairy cows in terms of metabolic rate and characterized by dynamic changes in the hormonal profile, loss of appetite, negative energy balance, nutrient and vitamin deficiencies, compromised immunity and oxidative stress. The aim of the research was to balance the increase in cows’ productivity and the consumption of nutrients from the feed during the transition period through the use of energy feed additives (EFS), high protein feed concentrate (PFC) in combination with biologically active (BA) substances. Thirty-six dairy cows of black-motley breed were divided into 3 groups: (1) The main diet (G0, n = 12), not supplemented with additives, (2) additive 1 (G1; supplemented with 0.5 kg EFS / cow per day, n = 12), (3) additive 2 (G2; supplemented with 0.5 kg EFS; 0.5 kg PFC and 0.06 kg BA / cow per day, n = 12). The experimental part of the feeding lasted for 20 days before calving and the first 100 days after calving (DPP). Blood samples were collected during the first and the third months after calving. The biochemical analyzer was used to measure blood serum components. The milk yield was recorded monthly throughout lactation. BCS losses from 7 days prior to calving to 28 DPP were -0.29 for Gr2, -0.42 for Gr1 and -0.60 for Gr0. Feeding with additive 2 (Gr2) increased milk yield (p≤0.05) in the first 100 DPPs and (p≤0.001) 305 DPPs compared to G0. The number of samples with SCC ≥ 500 000 / ml. per 100 DPP was 51% in the Gr0 group, 27% in Gr1, 25% in Gr2. Also, microbiological control showed an excess of Bacterial cells in the milk of cows from group G0, which correlates with SCC indicators. Cows from Gr2had a lower content of ketone bodies (P≥0.001) and higher (P≥0.001) antioxidant activity of blood serum compared to Gr0. Cows from Gr2 had an increase in ALT activity by1.4 times (P <0.05) from the first to the third months after calving.

COMPARATIVE DESCRIPTION OF MILK PRODUCTIVITY OF COWS UKRAINIAN RED-AND-WHITE DAIRY CATTLE AND UKRAINIAN BLACK-AND-WHITE DAIRY CATTLE AND HOLSTEIN BREEDS IN SERF «OLEKSANDRIVSKE»

2016 ◽  
Vol 52 ◽  
pp. 6-12 ◽  
Author(s):  
M. V. Gladiy ◽  
G. S. Kovalenko ◽  
S. V. Priyma ◽  
G. A. Holyosa ◽  
A. V. Tuchyk ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Dairy Cows ◽  
Milk Yield ◽  
Fat Content ◽  
Holstein Cows ◽  
Milk Productivity ◽  
Black And White ◽  
The Third ◽  
Fat Yield ◽  
Selection Of

The main goal of dairy breeds selection should be improving breeding and productive qualities of animals under modern conditions. The majority of farms, using native breeds to produce milk, has created optimal conditions for keeping and feeding, selection and matching, growing of replacements etc. Further improvement of created native dairy breeds for economically useful traits occurs at total use of purebred Holstein bulls (semen) of foreign selection. In order to realistically assess milk productivity (milk yield, fat content in milk and fat yield) of Ukrainian Black-and-White and Red-and-White Dairy cows should be conducted a comparative analysis of Holstein cows under the same conditions of feeding and keeping. It was established that Ukrainian Red-and-White Dairy cows were characterized by the highest milk yields for 305 days of all lactations, taken into account, the among three investigated breeds. Their milk yield during the first lactation was 5933 kg of milk, during the second – 6393 kg, the third – 6391 kg and during higher lactation – 6650 kg. Ukrainian Black-and-White Dairy cows were second by milk yield (except for the second lactation), during the first lactation – 5932 kg of milk, the third – 6462 kg and higher – 6541 kg, and Holstein cows were third, during the first lactation – 5794 kg of milk, the second – 6381 kg, the third – 6335 kg and higher – 6469 kg. The fat content was almost the same and varied within 3.49-3.58% in milk of Ukrainian Red-and-White Dairy cattle, 3.50-3.60% in milk of Ukrainian Black-and-White Dairy cattle and 3.50-3.56% in Holsteins’ milk. The difference between the breeds was within 0.01-0.04%. All the investigated breeds had predominance in fat yield for three lactations over standards of these breeds: Ukrainian Red-and-White Dairy cows from 75.1 to 93.4 kg, Ukrainian Black-and-White Dairy cows – 75.1-89.0 kg respectively and Holstein cows – 41.9-60.2 kg. It was found different level of positive correlation between milk yield and fat yield in all the cases and high correlation (r = 0.604-0.921, P < 0.001) in five cases (41.7%) Negative correlation coefficients indicate that selection of animals to higher milk yield in the herd will decrease the second trait – fat content in milk. Positive and highly significant correlation between milk yield and fat yield indicates that selection of cows in the herd to higher milk yields will increase fat yield. It was revealed that bulls were among the factors impacted the milk productivity (milk yield, fat content, fat yield) of three investigated breeds. So, the force (η²x) of father’s impact on milk yield was15.4-47.9%, fat content – 22.0-43.4% and fat yield – 14.9-47.7% taking into account a lactation and a breed. The force of lines impact (η²x) was second; it was on milk yield 6.1-24.5%, fat content – 4.1-17.1 and fat yield – 5.8-23.5%. The force of breeds impact (η²x) was last; it was on milk yield 0.3-2.9%, fat content – 0.2-0.3% and fat yield – 0.6-2.7%. So, the comparative studies of milk productivity of Ukrainian Red-and-White and Black-and-White Dairy cattle with Holsteins indicate that under similar conditions of feeding and keeping, these native breeds can compete with Holstein cattle. The milk yield for 305 days of higher lactation was 6650 kg of milk in Ukrainian Red-and-White Dairy cows, 6541 kg in Ukrainian Black-and-White Dairy cows and 6469 kg in Holsteins. It was found the inverse correlation r = -0.025-0.316 between milk yield and fat content in milk in most cases. Selection and matching of animals in the herd should be carried out simultaneously on these traits. It was found positive repeatability of milk yields between the first and second, the third and higher lactations (rs = 0.036-0.741), indicating the reliability of forecasting increase in milk productivity during the next lactations in all herd. Bulls have the greatest impact (η²x) on milk productivity among the factors taken into account: milk yield – 15.4-47.9%, fat content in milk – 22.0-43.4% and fat yield – 14.9-47.7%.

scholarly journals RELATIONSHIP BETWEEN BLOOD METABOLIC PROFILES AND MILK YIELD ASSOCIATED WITH PARITY AND STAGE OF LACTATION IN CROSSBRED DAIRY COWS IN BANGLADESH

2019 ◽  
Vol 1 (2) ◽  
Author(s):  
L Naher ◽  
M. A. Samad ◽  
S. H. M. F. Siddiki ◽  
M. T. Islam
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Metabolic Profile ◽  
Transition Period ◽  
Dairy Herds ◽  
Metabolic Profiles ◽  
Milk Samples ◽  
Stage Of Lactation ◽  
Lactating Dairy Cows ◽  
Calcium Phosphorus

Background: Cattle cross-breeding program has been launched throughout Bangladesh but this program has still focused mainly on biological rather than economic evaluation. Currently, 30000 dairy farms with mainly cross-bred cows are in operation throughout the country and this intensive dairy farming system with high milk yielding dairy cows is supposed to be associated with high incidence of sub-clinical nutritional and metabolic diseases. Objectives: The objective of this study was to detect the relationship between major blood metabolic profiles and milk yield associated with parity and stage of lactation in cross-bred dairy cows. Materials and Methods: Blood samples of 220 apparently healthy lactating cross-bred dairy cows (HF x L, n = 190; SH x L, n = 20 and JS x L, n = 10) of 10 dairy herds were collected for metabolic profile test (MPT) in Bangladesh during the period from July to November 2016. The major metabolic profiles which are associated with milk fever (calcium, phosphorus & magnesium) and ketosis (glucose) were considered in this study. These biochemical parameters were estimated to detect the influence of risk factors including herds, breeds, parities and lactation age of cross-bred lactating dairy cows by using the commercial kits in spectrophotometer method. Results: The evaluation of the biochemical constituents of 220 cross-bred lactating dairy cows revealed that 30% (n = 66) had hypocalcaemia and 20.45% (n = 45) had hypoglycemia. Significantly lower levels of average calcium (7.93 ± 0.36 mg/dl; p < 0.024) and glucose (43.44 ± 3.63 mg/dl; p < 0.0001) values were recorded in HF x L cross-bred dairy herd of BAUDF, Mymensingh in comparison to other investigated nine dairy herds. The highest milk yield was recorded at 7th parity (16 +- 0.91 liter / day) and 1st week of lactation (17.33 +- 1.09 liter / day) were associated with low mean calcium (8.09 +- 0.85 mg / dl; 6.68 +- 0.13 mg/dl) and glucose (36.45 +- 7.67 mg/dl; 32.31 +- 3.90 mg / dl) levels in comparison to the respective values of different parity and lactation weeks. Conclusions: A relationship between blood metabolic profiles and milk yield associated with herd, breed, parity and lactation stages was recorded in lactating crossbred dairy cows. The evaluation of blood metabolites at different stages of lactation cycle especially at transition period is required to detect the nutritional and metabolic health for optimum milk production and to achieve maximum reproductive potential of high yielding dairy cattle. The readily available milk samples could be used as a biological fluid to monitor the health and nutritional status of dairy cows by using mid-infrared (MIR) spectroscopy method to prevent sub-clinical metabolic disorders. Therefore, well developed laboratories with necessary equipment, test kits and reagent should be provided to perform MPT in both the blood and milk samples for practical uses. Keywords: Compton metabolic profile test, Metabolic profile, Lactating cross-bred cows, Calcium, Phosphorus, Magnesium, Glucose, Parity, Lactation stages

Effects of dietary supplemental baker's yeast (Saccharomyces cerevisiae) and niacin on milk yield and milk composition of dairy cows

1998 ◽  
Vol 1998 ◽  
pp. 217-217
Author(s):  
A.R. Tasdemir ◽  
M. Gorgulu
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Dairy Cows ◽  
Milk Yield ◽  
Synergistic Effects ◽  
Milk Composition ◽  
Baker’S Yeast ◽  
Feed Additives ◽  
Yeast Culture ◽  
Baker's Yeast ◽  
Experimental Conditions

In the last twenty years, some probiotics, such as Aspergillus oryzae or A. niger (Pioneer, 1989), yeast culture (Saccharomyces cerevisiae) (Wallace, 1994) and some microbial growth promoters (e.g. thiamine, niacin) (Shield, 1981), were used as feed additives in order to improve rumen conditions and cellulose digestion in the rumen and milk yield of dairy cows. The present study was planned to determine whether dietary supplemental baker's yeast and niacin would have individual and/or synergistic effects on milk yield and milk composition of dairy cows under our experimental conditions.

scholarly journals PREVALENCE AND RISK FACTORS OF SUBCLINICAL MILK FEVER AND KETOSIS IN LACTATING CROSS-BRED DAIRY COWS WITH THEIR THERAPEUTIC MANAGEMENT IN BANGLADESH

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
L. Naher ◽  
M. A. Samad ◽  
S. H. M. F. Siddiki ◽  
M. T. Islam
Keyword(s):  
Risk Factors ◽  
Dairy Cows ◽  
Milk Yield ◽  
Serum Calcium ◽  
Ketone Bodies ◽  
Therapeutic Management ◽  
Lactation Period ◽  
Potential Health ◽  
Milk Fever ◽  
High Prevalence

Background: Bovine Milk fever (MF/hypocalcaemia) and ketosis (CK/hypoglycemia and hyperketonemia) both in clinical and sub-clinical forms are the most important metabolic diseases caused by metabolic disorders of calcium and carbohydrate respectively that affect mainly high milk yielding dairy cows worldwide. Sub-clinical form may be more costly due to comparatively high prevalence and consequence of high risk of decreased productive and reproductive performances with increased reproductive and other disorders. Objectives: The objectives of this study were to determine the prevalence of sub-clinical hypocalcaemia (SCHC) and sub-clinical ketosis (SCK) and to investigate important potential risk factors for SCHC and SCK with their therapeutic management in lactating cross-bred dairy cows. Materials and Methods: A cross sectional study was conducted on 220 dairy crossbred (HF  L = 190, SH  L = 20 and JS  L = 10) cows maintained in nine dairy farms and one smallholder farm during the period from July to November 2016. The parity (1 to 8), lactation stages (1 to 13 weeks), body condition score (BCS), breed (3 crossbreds), age (3.5 to 14 years) and milk yield (liter/day) were evaluated as possible risk factors. The serum calcium, inorganic phosphorus, magnesium and glucose concentrations of the 220 dairy cows were determined by using imported commercial kits. Dairy cows with serum calcium concentrations  8.0 mg/dl and serum glucose  44.0 mg / dl with positive ketone tests but not showing any clinical signs were considered SCHC and SCK respectively. Results: The overall prevalence of SCHC was 30.0%, of which 32.11% were recorded in HF  L, 15.0% in SH  L and 20.0% in JS  L cross-bred cows. The overall prevalence of SCK was 25.0%, of which 27.37% in HF  L, 10.0% in SH  L and 10.0% in JS  L cross-bred cows. The SCHC was recorded 10 times greater than MF and SCK 6 times greater than CK in Bangladesh. The hypocalcemia and hypophosphatemia with hypermagnesemia status were recorded in SCHC affected lactating cows which were more significantly (p < 0.05) higher (46.67%) at 4th parity and lower (16.67%) at 1st parity. The significantly (p < 0.01) higher prevalence of SCK was recorded at the 4th (53.33%) in comparison to other parity especially lowest at 1st (2.78%) and 2nd (4.0%) parity. The significantly (p < 0.1) highest prevalence of SCHC and SCK were recorded at high milk yield during the 1st (94.44%; 77.78%) and 2nd (66.67%; 56.67%) weeks of lactation period than the higher lactation stages respectively. The effects of BCS on the milk yield and the prevalence of SCHC and SCK are presented and discussed. Encouraging results with increased blood calcium and glucose levels were obtained on the therapeutic response of SCHC with oral calcium and SCK with oral propylene glycol. Conclusions: The SCHC and SCK have detrimental effects on cow health, productivity and reproduction and also predisposes to other diseases and disorders. The efficient balanced ration, periodic screening blood, milk and urine for determination of concerned biochemical constituents and ketone bodies considering risk factors could help to early detection of SCHC and SCK to limit their effects in dairy cattle. The high prevalence of SCHC and SCK recorded in this study should be viewed as a potential health risk to the transition cows that requires further research. Keywords: Sub-clinical milk fever, Sub-clinical ketosis, crossbred cows, prevalence, risk factors, calcium, magnesium, phosphorus, glucose, ketone bodies, therapeutic management, Bangladesh

The use of probiotics for the correction of disturbances of metabolism in cows

2021 ◽  
pp. 47-53
Author(s):  
O. V. Kovaleva ◽  
N. V. Sannikova ◽  
О. V. Shulepova ◽  
N. M. Kostomakhin ◽  
Yu. A. Karmatskikh
Keyword(s):  
Bacillus Subtilis ◽  
Milk Yield ◽  
Biochemical Parameters ◽  
Metabolic Disorders ◽  
Ketone Bodies ◽  
Animal Husbandry ◽  
Feed Additives ◽  
Coliform Bacteria ◽  
Lactating Cows ◽  
Microbial Number

Currently, there is a huge range of different feed additives on the market, which are widely used in animal husbandry, but they act simultaneously, i. e. by stopping their use the resulting effect is also lost. Metabolic disorders due to feeding errors begin imperceptibly without any precursors, and first of all this affects the biochemical parameters of the blood only later leads to alimentary diseases with deep often irreversible degenerative changes in organs and tissues. In practice, there are rarely disorders of any one type of metabolism more often there are combinations of various metabolic disorders, especially often this occurs in the absence of a complete balanced feeding. The purpose of the work was to evaluate the effectiveness of the use of a probiotic drug based on Bacillus subtilis in the watering of lactating cows for the correction of metabolic disorders. In order to assess the actual presence of probiotics in the water during the experiment its analysis has been carried out. It has shown that in the water that enters the distribution tank the total microbial number was 9×10[sup]5[/sup] CFU/ml, and in the drinker this indicator was at the level of 3,8×10[sup]5[/sup] CFU/ml. Common coliform bacteria and thermotolerant coliform bacteria have been not detected. Studies have shown that when using the drug based on Bacillus subtilis containing five strains of bacteria in an amount of 0,01 %, which is 6 ml/head/day in the watering of lactating cows during the increasing the milk yield period there was a tendency to correct metabolic disorders. There was the decrease in the content of ketone bodies by 11,9 %, the increase in glucose by 34 % and the decrease in urea by 7,1 mmol/l.

scholarly journals Milk production of dairy cows as affected by the length of the preceding dry period

2015 ◽  
Vol 44 (5) ◽  
pp. 21-24
Author(s):  
BA Useni ◽  
CJC Muller ◽  
CW Cruywagen
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Body Condition ◽  
Generalized Linear Model ◽  
Milk Composition ◽  
The Other ◽  
Dry Period ◽  
Protein Levels ◽  
The Third ◽  
Milk Performance

The objective of the study was to determine the effect of the duration of the dry period (DP) on the milk yield and milk composition during the following lactation. Milk performance records of 561 Holstein cows, with a previous DP from the Elsenburg Research Farm obtained from the National Milk Recording Scheme, were used in the study. Four groups of dairy cows were identified, based on the duration of their dry period, i.e. cows with a DP of less than 60 days, DP of 61 to 90 days, DP of 91 to 120 days and DP of more than 121 days. The number of records for each group was 76, 162, 83 and 240 lactations, respectively. An ANOVA was conducted using the Generalized Linear Model of SAS to compare milk yield and milk composition according to the DP length. Almost 43% of cows had a DP longer than 121 days, while less than 14% of cows had a DP of less than 60 days. The milk yield was positively affected by DP length. Cows with a DP of less than 60 days produced less milk than cows with longer (more than 61 days) dry periods, e.g. 6462 ± 321 vs. 7393 ± 99 kg. Results were similar for cows in their second and fourth parity. In addition, the milk composition of cows was also affected by DP length, i.e. higher fat and protein levels in the milk from cows with a short DP. Cows in the third lactation with a DP above 121 days produced more milk than the other DP groups. However, the milk composition of cows in the third lactation was not affected by DP length. A DP of less than 60 days reduced milk yield, while an extended DP of more than 121 days would be costly for the dairy farmer even though milk yield was higher. A long dry period may also result due to an excess body condition and calving complications during the subsequent lactation.Keywords: Dry period, milk yield, milk composition, dairy cows

Diet supplementation with clinoptilolite improves energy status, reproductive efficiency and increases milk yield in dairy heifers

2013 ◽  
Vol 53 (3) ◽  
pp. 234 ◽  
Author(s):  
Maria A. Karatzia ◽  
Panagiotis D. Katsoulos ◽  
Harilaos Karatzias
Keyword(s):  
Serum Concentration ◽  
Blood Serum ◽  
Milk Yield ◽  
Body Condition ◽  
Ketone Bodies ◽  
Body Condition Score ◽  
Reproductive Parameters ◽  
Energy Status ◽  
Dairy Heifers ◽  
Condition Score

The objective of this study was to investigate the effect of long-term dietary inclusion of clinoptilolite on the energy status, reproductive parameters and milk yield of dairy heifers. Eighty Holstein pregnant heifers were equally divided to two groups: treatment group heifers were fed the ration supplemented with 200 g clinoptilolite per day; control group heifers were fed the basal ration and served as controls. The experiment started on Day 210 of gestation and lasted until the end of the first lactation period. Blood samples were collected from each animal at the start of the experiment, 30 days later on the day of calving and then on a monthly basis and were analysed for serum glucose and ketone bodies. On the same days, all animals were monitored for body condition score. Cows were observed for heat every day and were inseminated at first heat after the 60th day postpartum. Calving to first heat interval, calving to first service interval, number of services per conception and calving interval were calculated for both groups. Milk yield for each cow was recorded monthly and 305-day milk yield was calculated. Clinoptilolite supplementation significantly increased body condition score and blood serum concentration of glucose and significantly decreased blood serum concentration of ketone bodies. Clinoptilolite also improved significantly the reproductive parameters evaluated and significantly increased milk production. These results indicate that daily dietary administration of 200 g of clinoptilolite can be used for the improvement of animal performance in dairy herds.

scholarly journals Dihydropyridine Enhances the Antioxidant Capacities of Lactating Dairy Cows under Heat Stress Condition

Animals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1812
Author(s):  
Meng-Fei Yu ◽  
Xin-Mao Zhao ◽  
Hang Cai ◽  
Jian-Ming Yi ◽  
Guo-Hua Hua
Keyword(s):  
Heat Stress ◽  
Antioxidant Capacity ◽  
Dairy Cows ◽  
Microbial Communities ◽  
Milk Yield ◽  
Dairy Cow ◽  
Feed Additives ◽  
Feed Consumption ◽  
Standard Diet ◽  
Antioxidant Capacities

Heat stress (HS), a nonspecific response to environmental heat, can seriously affect dairy cow health. Feed additives may alleviate HS in dairy cows by improving rumen fermentation efficacy, stimulating feed consumption, enhancing vasodilation, and/or improving antioxidant capacity. The temperature–humidity index (THI) indicates that spring is a non-HS season, and summer is an HS season. HS results in the decrease in dairy cow antioxidant capacities. Our results indicated the decrease in superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), catalase (CAT), and total antioxidation (T-AOC) levels and the increase in malondialdehyde (MDA) level during HS season. Meanwhile, antioxidant indexes (SOD, GSH-Px, and T-AOC) were positively correlated with milk yield (p < 0.01), whereas MDA exhibited a significant negative correlation with milk yield (p < 0.05). In addition, the effects of dihydropyridine (DHP) on antioxidant capacity and ruminal microbial communities in dairy cows under HS were investigated. During summer, dairy cows were randomly assigned into two groups under HS, including a standard diet (S-ND) group and standard diet with 3 g/day/cow DHP (S-D) group. DHP treatment significantly restored SOD and GSH-Px levels under HS. Denaturing gradient gel electrophoresis results indicated that the DHP altered ruminal bacterial community mainly composed Proteobacteria and Firmicutes in dairy cows under HS. Our results suggest that DHP can enhance the antioxidant abilities of dairy cows with favorable effects on ruminal microbial communities under HS, further alleviating HS on dairy cows.

scholarly journals Effect of Kalzoral preparation on prevention of parturient paresis relapse, in dairy cows

2018 ◽  
Vol 48 (1) ◽  
pp. 24
Author(s):  
H. KARATZIAS (Χ. ΚΑΡΑΤΖΙΑΣ) ◽  
N. ROUBIES (Ν. ΡΟΥΜΠΙΕΣ) ◽  
G. CHRISTODOULOPOULOS (Γ. ΧΡΙΣΤΟΔΟΥΛΟΠΟΥΛΟΣ) ◽  
N. PANOUSIS (Ν. ΠΑΝΟΥΣΗΣ) ◽  
A. PAPASTERIADIS (Α. ΠΑΠΑΣΤΕΡΙΑΔΗΣ)
Keyword(s):  
Blood Serum ◽  
Dairy Cows ◽  
Calcium Gluconate ◽  
Initial Treatment ◽  
Intramuscular Injection ◽  
The Third ◽  
Group A ◽  
Parturient Paresis ◽  
Experimental Group

This research describes 20 cases of cows with parturient paresis (controls), which were treated with intravenous administrations of calcium gluconate and dextrose, and intramuscular injection of vit. D3 . In 20 other cases (experimental group), a solution of 250g Kalzoral was administrated orally, after the treatment mentioned above. Thiw Klzoral is a preparation of Dr E. Graeub AG, Bern Switzerland, containing 22% Ca, 4% Ρ, 5% Mg, 200.000 IU/kg vit D3 , flavours and taste improvements. The administration of Kalzoral was repeated twice, in the same dose, 24 and 48 h after the first administration. The levels of Ca, Ρ, Mg Κ and Na in the blood serum of the cows were measured before starting the treatment and also 24 and 72 h after it. Both groups, during the disease presented hypocalcemia (serum Ca<6,5 mg/dl), hypophosphatemia, mild hyponatremia, and normal concentrations of Mg and K. Six anomals (30%) of the controls group had a relapse within the first 24 h after the treatment. There was no relapse in the experimental group. The concentration of Ρ of the experimental cows came back to normal, the first day after the initial treatment while that of the controls, on the third. The concentration of Mg and Κ in the blood serum of all animals was found to be normal always. The initial hyponatremia of both groups remained at the same level, as it was indicated by the last two measurements and it appeared no connection to the parturient paresis. It was considered to be the result of insufficient addition of NaCl in the animals diet.

scholarly journals A Meta-analysis Describing the Effects of the Essential oils Blend Agolin Ruminant on Performance, Rumen Fermentation and Methane Emissions in Dairy Cows

Animals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 620 ◽  
Author(s):  
Alejandro Belanche ◽  
Charles Newbold ◽  
Diego Morgavi ◽  
Alex Bach ◽  
Beatrice Zweifel ◽  
...  
Keyword(s):  
Essential Oils ◽  
Dairy Cows ◽  
Milk Yield ◽  
Meta Analysis ◽  
Methane Emissions ◽  
Rumen Fermentation ◽  
Feed Additives ◽  
Adaptation Period ◽  
Long Term Treatment

There is an increasing pressure to identify feed additives which increase productivity or decrease methane emissions. This paper aims to elucidate the effects of supplementing a specific essential oils blend Agolin® Ruminant on the productivity of dairy cows in comparison to non-treated animals. A total of 23 in vivo studies were identified in which Agolin was supplemented at 1 g/d per cow; then a meta-analysis was performed to determine the response ratio on milk yield, rumen fermentation, methane emissions and health. Results indicated that an adaptation period of at least 4 weeks of treatment is required. Whereas short-term studies showed minor and inconsistent effects of Agolin, long-term studies (>4 weeks of treatment) revealed that Agolin supplementation increases milk yield (+3.6%), fat and protein corrected milk (+4.1%) and feed efficiency (+4.4%) without further changes in milk composition and feed intake. Long-term treatment also decreased methane production per day (−8.8%), per dry matter intake (−12.9%) and per fat and protein corrected milk yield (−9.9%) without changes in rumen fermentation pattern. In conclusion, despite the mode of action is still unclear and the small number of studies considered, these findings show that Agolin represents an encouraging alternative to improve productivity in dairy cows.

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