Detecting and preventing contamination of dairy cattle feed

2017 ◽  
pp. 95-116
Author(s):  
Delia Grace ◽  
◽  
Johanna Lindahl ◽  
Erastus Kang’ethe ◽  
Jagger Harvey ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Cattle Feed

The mineral content of dairy cattle feed resources in Nakuru district, Kenya

2006 ◽  
Vol 46 (4) ◽  
pp. 233-235
Author(s):  
FW Wekesa ◽  
SA Abdulrazak ◽  
EA Mukisira ◽  
JMK Muia
Keyword(s):  
Dairy Cattle ◽  
Mineral Content ◽  
Cattle Feed ◽  
Feed Resources

scholarly journals Effectiveness of the Dairy Cattle Feed Formulation System in Developing Lactating Rations

1978 ◽  
Vol 61 (11) ◽  
pp. 1645-1651 ◽  
Author(s):  
G.M. Jones ◽  
E.E. Wildman ◽  
P. Wagner ◽  
N. Lanning ◽  
P.T. Chandler ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Cattle Feed ◽  
Feed Formulation

Use of Onion Extract as a Dairy Cattle Feed Supplement: Monitoring Propyl Propane Thiosulfonate as a Marker of Its Effect on Milk Attributes

2017 ◽  
Vol 65 (4) ◽  
pp. 793-799 ◽  
Author(s):  
Paloma Abad ◽  
Natalia Arroyo-Manzanares ◽  
Lidia Gil ◽  
Ana M. García-Campaña
Keyword(s):  
Dairy Cattle ◽  
Feed Supplement ◽  
Cattle Feed ◽  
Onion Extract

MINERAL ANALYSES OF DAIRY CATTLE FEED IN THE UPPER FRASER VALLEY OF BRITISH COLUMBIA

1980 ◽  
Vol 60 (1) ◽  
pp. 177-183 ◽  
Author(s):  
E. B. CATHCART ◽  
J. A. SHELFORD ◽  
R. G. PETERSON
Keyword(s):  
British Columbia ◽  
Dairy Cattle ◽  
Trace Minerals ◽  
Cattle Feed ◽  
Cattle Feeds ◽  
Iron Manganese ◽  
Fraser Valley ◽  
Mineral Analyses

Analyses of five macro-minerals and six trace minerals in dairy cattle feeds revealed higher iron, manganese and copper means and lower sulphur and selenium means than comparable reported values for most feed categories. Cattle fed mainly forages may not be receiving enough sulphur and selenium although copper levels appear to be adequate.

scholarly journals FeedEfficiencyService: An Architecture for the Comparison of Data from Multiple Studies Related to Dairy Cattle Feed Efficiency Indices

2021 ◽  
Author(s):  
Heitor Magaldi Linhares ◽  
Regina Braga ◽  
Wagner Antônio Arbex ◽  
Mariana Magalhães ◽  
Fernanda Campos ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Feed Efficiency ◽  
Cattle Feed

Gliotoxin natural incidence and toxigenicity of Aspergillus fumigatus isolated from corn silage and ready dairy cattle feed

2008 ◽  
Vol 1 (4) ◽  
pp. 457-462 ◽  
Author(s):  
C. Pereyra ◽  
V. Alonso ◽  
C. Rosa ◽  
S. Chiacchiera ◽  
A. Dalcero ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Aspergillus Fumigatus ◽  
Corn Silage ◽  
Cattle Feed ◽  
Feed Source ◽  
Apoptotic Effects ◽  
Penicillium Spp ◽  
Feed Samples ◽  
Natural Incidence

Corn silage is an important feed source for dairy and beef cattle in central Argentina. The presence of thermophilic species Aspergillus fumigatus is among the major problem in silage, as many strains can produce several mycotoxins that affect the health of dairy cattle. The aims of the present study were to determine total fungal counts and relative density of A. fumigatus in silage samples, and to determine the natural incidence of gliotoxin in silage and ready dairy feed samples. The potential gliotoxin production of A. fumigatus isolated from silage was also recorded. A total of 90 samples were investigated, which were taken immediately after opening of the silo and the end of the ensiling period of about after 5 months. Sampling was performed manually through silos in transects at 3 levels per silo. Thirty samples of ready cattle feed (corn silage, ground corn, barley, cotton seed, brewer grains) were collected and investigated as well. Gliotoxin contamination was determined by HPLC. The ability of A. fumigatus to produce gliotoxin was measured using a TLC method. Results show that in all samples, the total number of yeasts and moulds exceeded 1×104 cfu/g. Aspergillus was the most prevalent genus followed by Fusarium and Penicillium spp. Investigations of the isolated A. fumigatus strains showed that many of these strains produced more than one mycotoxin. All samples showed gliotoxin contamination, but the strains isolated from ready cattle feed had higher gliotoxin levels than those isolated from corn silage. The gliotoxin concentrations found in this study exceeded the levels that are known to induce immunosuppressive and apoptotic effects in vitro. Although at present the oral bioavailability of gliotoxin in cattle is not known, the presented data suggest that its presence in feedstuffs could affect productivity and present a health risk for dairy cows.

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