scholarly journals Feed additives containing sequestrant clay minerals and inactivated yeast reduce aflatoxin excretion in milk of dairy cows

2019 ◽  
Vol 102 (7) ◽  
pp. 6614-6623 ◽  
Author(s):  
R.O. Rodrigues ◽  
R.O. Rodrigues ◽  
D.R. Ledoux ◽  
G.E. Rottinghaus ◽  
R. Borutova ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Clay Minerals ◽  
Feed Additives ◽  
Excretion In Milk

scholarly journals Reduced Transition of 137Cs in Milk of Cows With the Use of Modified Fodder Additives With Ferrocin

2019 ◽  
Vol 5 (11) ◽  
pp. 218-223
Author(s):  
O. Gubareva ◽  
N. Isamov
Keyword(s):  
Dairy Cows ◽  
Agricultural Land ◽  
High Variability ◽  
Feed Additives ◽  
Cow’S Milk ◽  
Scientific Interest ◽  
Cow's Milk ◽  
High Pollution ◽  
Livestock Products ◽  
Production Conditions

The problem of livestock production that meets sanitary standards in radioactively contaminated territories remains relevant and is of great practical and scientific interest. The use of sorbents from the class of ferrocyanides promotes the production of livestock products (milk) that comply with accepted hygienic standards. The studies were conducted to evaluate the effectiveness of new formulations of feed additives based on potassium–iron (III) hexacyanoferrate (II) (azure iron milori) compared with 137Cs Bifezh sorbent to reduce the content of radiocaesium, on the productivity of dairy cows and qualitative milk indicators. The tests were carried out under production conditions on the basis of the SEC “Rabochii” of the Gordeevsky district of the Bryansk region. The farm was exposed to radioactive contamination as a result of the Chernobyl accident. Agricultural land of the farm is characterized by relatively high pollution densities at 137Сs and high variability. The use of ferrocine-containing preparations as part of new formulations of modified feed additives made it possible to reduce the concentration of 137Cs in cow’s milk by 2–4 times on day 15 and by 4–5 times on day 30 as compared to the control and did not affect the qualitative indicators of cow’s milk, except for a significant increase fat content of milk in all groups of animals by the end of the experiment.

scholarly journals The Mineralogical Composition of Samos Zeoliitic Rocks and their potential use as Feed Additives and Nutrition Supplements

2020 ◽  
Vol 56 (1) ◽  
pp. 84
Author(s):  
Anestis Filippidis ◽  
Christina Mytiglaki ◽  
Nikolaos Kantiranis ◽  
Ananias Tsirambides
Keyword(s):  
Clay Minerals ◽  
Animal Species ◽  
Mineralogical Composition ◽  
Feed Additives ◽  
Feed Additive ◽  
X Ray Diffraction ◽  
Eu Regulation ◽  
Fibrous Minerals ◽  
Potential Use ◽  
The Eu

Fifteen (15) zeolitic rocks from Karlovassi-Marathokampos basin of Samos Island (Greece) were investigated for their mineralogical composition by X-Ray Diffraction (XRD) method. According to EU Regulation No 651/2013, clinoptilolite of sedimentary origin with ≥80 wt% clinoptilolite, ≤20 wt% clay minerals, free of fibres and quartz, can be used as feed additive for all animal species. Depending on the zeolites, the zeolitic rocks are grouped to those containing: Clinoptilolite (33-86 wt%), clinoptilolite (59 wt%) + mordenite (20-21 wt%), clinoptilolite (22 wt%) + analcime (29 wt%), clinoptilolite (17 wt%) + phillipsite (27 wt%), analcime (29-70 wt%), mordenite (62%) and chabazite (63 wt%). None of the clinoptilolite-containing rocks (10 samples) meet the requirements of the EU Regulation No 651/2013, and thus cannot be used as feed additives for all animal species and consequently as nutrition supplements, since all of them contain 2-5 wt% quartz, two of them 20-21 wt% mordenite (fibrous zeolite), nine of them <80 wt% clinoptilolite (17-73 wt%) and two of them >20 wt% clay minerals (27-42 wt%). Although the EU Regulation No 651/2013 refers to clinoptilolite of sedimentary origin, using the presence or absence of quartz and fibrous minerals, none of the five mordenite, analcime and chabazite containing zeolitic rocks, can be used as feed additives and nutrition supplements, since all of them contain 2-6 wt% quartz and one of them contains 62 wt% mordenite (fibrous zeolite).

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 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.

Effect of experimental feed additives on aflatoxin in milk of dairy cows fed aflatoxin-contaminated diets

2012 ◽  
Vol 97 (4) ◽  
pp. 694-700 ◽  
Author(s):  
L. Kissell ◽  
S. Davidson ◽  
B. A. Hopkins ◽  
G. W. Smith ◽  
L. W. Whitlow
Keyword(s):  
Dairy Cows ◽  
Feed Additives

scholarly journals Impact of humic acid as an organic additive on the milk parameters and occurrence of mastitis in dairy cows

10.5219/1340 ◽  
2020 ◽  
Vol 14 ◽  
pp. 358-364
Author(s):  
František Zigo ◽  
Milan Vasiľ ◽  
Zuzana Farkašová ◽  
Silvia Ondrašovičová ◽  
Martina Zigová ◽  
...  
Keyword(s):  
Immune Responses ◽  
Dairy Cows ◽  
Animal Health ◽  
Organic Additive ◽  
Feed Additives ◽  
Coagulase Negative Staphylococci ◽  
Suitable Alternative ◽  
Beneficial Effects ◽  
California Mastitis Test ◽  
Milk Urea

Given growing concerns about the use of antibiotics in the treatment of animals, identifying organic alternatives as feed additives to improve animal health and the development of immune responses has become of interest in dairy farming. Humic acids (HA) seem to be a suitable alternative with a favorable impact on the health and production parameters of animals. This study aimed to determine the effects of an HA supplemented diet on milk parameters as well as the effects on somatic cell count (SCC) and the occurrence of mastitis in dairy cows during the peripartum period. Twenty dairy cows in the last stage of pregnancy were selected from a herd of 140 cows. The selected cows were randomly divided into two groups: control (C) and experimental (E). The two groups were fed the same feed mixture and group E was additionally supplemented with HA at a total dose of 100 g per cow per day during the last 50 days of pregnancy. The milk parameters (dry matter, lactose, fat, crude protein, casein and milk urea) and SCC of every cow, and the presence of mastitis, were checked on days 10 and 30 during the first month of lactation. The results of the study show that dietary supplementation with HA significantly reduced the milk urea (MU) content and SCC on the 10th day after calving but did not affect the other milk compositions. In addition to the decreased MU and SCC, the number of positive quarters detected by the California Mastitis Test was reduced by 20.0% and the occurrence of mastitis caused by coagulase-negative staphylococci (CNS). Based on the obtained results we can conclude that the addition of HA stabilizes the nutrient digestion, as was confirmed by a reduced MU content in the supplemented group. Their indirect beneficial effects improved the development of immune responses, resulting in decreased SCC and the occurrence of mastitis caused by CNS.

scholarly journals Ruminant Beslemede Son Gelişmeler

2014 ◽  
Vol 2 (1) ◽  
pp. 18 ◽  
Author(s):  
Hasan Rüştü Kutlu ◽  
Uğur Serbester
Keyword(s):  
Dairy Cows ◽  
Food Production ◽  
Environmental Temperature ◽  
Animal Health ◽  
Feed Additives ◽  
Farm Animals ◽  
Trace Minerals ◽  
Animal Nutrition ◽  
Balanced Diet ◽  
Antioxidants Enzymes

One of the most industrialized animal production branches of ruminant production successfully requires a blending of theoretical knowledge of nutritional principles with practical stockmanship, maintaining health and dealing with numbers. It is well known that high yielding, dairy cows, require balanced diet with adequate nutrients for yielding. This is not provided with only a few feedstuffs. Milk production in dairy cows is related to the improvements in genetic merit of farm animals and also developments in feed science, feed technology and animal nutrition. In particular, feeds and feed technology studies associated with sustainability, economical perspectives and product quality in the last decade have been in advance. In the present work, recent advances in feed sources and feed technology, minerals (macro and trace minerals ), vitamins and amino acids, feed additives (antibiotics alternative growth stimulants, rumen modulator, organic acids, antioxidants, enzymes, plant extracts), nutrition-products (meat-milk-progeny) quality and functional food production (milk, meat) nutrition-reproduction, nutrition-animal health, nutrition-environmental temperature, nutrition-global warming were evaluated.

Supplementing dairy steers and organically managed dairy cows with synthetic vitamin D3 is unnecessary at pasture during exposure to summer sunlight

2009 ◽  
Vol 76 (3) ◽  
pp. 372-378 ◽  
Author(s):  
Lone Hymøller ◽  
Søren K Jensen ◽  
Hanna Lindqvist ◽  
Birgitta Johansson ◽  
Mette O Nielsen ◽  
...  
Keyword(s):  
Vitamin D ◽  
Dairy Cattle ◽  
Dairy Cows ◽  
Organic Production ◽  
Feed Additives ◽  
Hydroxyvitamin D ◽  
Synthetic Vitamin ◽  
Time Of Year ◽  
Production Animals ◽  
The Impact

Use of synthetic feed additives, including synthetic vitamin D3 (D3) in the feed for cows and other ruminants, is not consistent with the international principles of organic farming. If dairy farmers wish to produce in accordance with the organic principles, production animals would be left with only their endogenous production of D3 from summer sunlight as a source of D3. To examine the impact of supplemental synthetic D3 from the feed on the D3 status of dairy cattle in organic production in Nordic countries, 20 high-yielding dairy cows and 30 dairy steers were divided into two groups: one supplemented with synthetic D3 in the feed and one not supplemented with synthetic D3. Vitamin D3 status of the animals was assessed by measuring the concentration of the liver-derived 25-hydroxyvitamin D3 (25OHD3) in plasma. Results showed that 25OHD3 concentration in plasma from dairy cattle as well as from steers decreased during winter for both supplemented and unsupplemented groups. Unsupplemented cows and steers had approximately 2 ng 25OHD3 per ml plasma during winter, whereas supplemented animals had between 10 (cows) and 30 (steers) ng/ml. During summer and autumn there was no additive effect of supplementing with synthetic D3 since unsupplemented and supplemented animals had the same D3 status at this time of year. In all cows summer concentrations of 25OHD3 were 20–25 ng/ml and in all steers 40–50 ng/ml plasma. The decrease in vitamin D3 status during winter indicates that cows and steers are able to store D3 only to a limited extent. The results also show that cows or steers fed supplemental D3 according to Swedish recommendation throughout the year are not able to maintain their summer value of 25OHD3 during winter.

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