scholarly journals Long-Term Effects of Feeding Monensin on Methane Production in Lactating Dairy Cows

2007 ◽  
Vol 90 (4) ◽  
pp. 1781-1788 ◽  
Author(s):  
N.E. Odongo ◽  
R. Bagg ◽  
G. Vessie ◽  
P. Dick ◽  
M.M. Or-Rashid ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Methane Production ◽  
Long Term Effects ◽  
Lactating Dairy Cows

scholarly journals Long-Term Effects of Feeding Monensin on Milk Fatty Acid Composition in Lactating Dairy Cows

2007 ◽  
Vol 90 (11) ◽  
pp. 5126-5133 ◽  
Author(s):  
N.E. Odongo ◽  
M.M. Or-Rashid ◽  
R. Bagg ◽  
G. Vessie ◽  
P. Dick ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Dairy Cows ◽  
Acid Composition ◽  
Milk Fatty Acid ◽  
Long Term Effects ◽  
Lactating Dairy Cows

scholarly journals Effects of forage type and extruded linseed supplementation on methane production and milk fatty acid composition of lactating dairy cows

2015 ◽  
Vol 98 (6) ◽  
pp. 4000-4011 ◽  
Author(s):  
K.M. Livingstone ◽  
D.J. Humphries ◽  
P. Kirton ◽  
K.E. Kliem ◽  
D.I. Givens ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Dairy Cows ◽  
Acid Composition ◽  
Methane Production ◽  
Milk Fatty Acid ◽  
Lactating Dairy Cows ◽  
Forage Type

Long-term effects of feeding diets without mineral phosphorus supplementation on the performance and phosphorus excretion in high-yielding dairy cows

2007 ◽  
Vol 87 (4) ◽  
pp. 639-646 ◽  
Author(s):  
N. E. Odongo ◽  
D. McKnight ◽  
A. KoekKoek ◽  
J. W. Fisher ◽  
P. Sharpe ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Body Condition Score ◽  
Block Design ◽  
Holstein Cows ◽  
Long Term Effects ◽  
Total Mixed Ration ◽  
Mineral Phosphorus ◽  
Randomized Block Design ◽  
Randomized Design

The objective of this study was to assess the long-term effects of feeding a diet with no mineral phosphorus (P) supplementation on performance and P excretion in high-yielding dairy cows. In exp. 1, 24 primiparous (PP) and 40 multiparous (MP) Holstein cows were allocated to one of two treatments at calving: (1) regular corn silage and alfalfa haylage based milking cow total mixed ration (TMR; 0.42% P diet) or (2) milking cow total mixed ration (TMR) without supplemental mineral P (0.35% P diet) in a completely randomized design. The trial lasted until after two lactations were completed or the cow was culled. In exp. 2, eight MP Holstein cows (108 ± 8.0 d in milk) were used to determine P digestibility and retention in a completely randomized block design. In exp. 1, the 0.35% P diet cows had lower body weight, body condition score and milk urea nitrogen and higher faecal P than the 0.42% P cows. The dry matter intake (DMI) of PP cows on the 0.35% P diet was lower than that of PP cows on the 0.42% P diet. There was no difference in the DMI of MP cows. The P intake of 0.35% P diet PP cows was 30% lower than that of 0.42% P diet PP cows. The P intake of 0.35% P diet MP cows was 20% lower than that of 0.42% P diet MP. The digestibility coefficient of P for the 0.35% P diet was higher than that for the 0.42% P diet. These results suggest that the forages used in the present study contained adequate amounts of P to sustain milk production in high-yielding MP cows. However, for PP cows some mineral P supplementation is recommended especially during early lactation. Key words: Phosphorus, environmental pollution, intensive dairy operations

The long-term effects of laminitis in dairy cows

1971 ◽  
Vol 89 (2) ◽  
pp. 34-37 ◽  
Author(s):  
C. Maclean
Keyword(s):  
Dairy Cows ◽  
Long Term Effects

Effects of long-term dietary cadmium chloride on tissue, milk, and urine mineral concentrations of lactating dairy cows

1991 ◽  
Vol 69 (10) ◽  
pp. 4088-4096 ◽  
Author(s):  
R. M. Smith ◽  
R. M. Leach ◽  
L. D. Muller ◽  
L. C. Griel ◽  
D. E. Baker
Keyword(s):  
Dairy Cows ◽  
Cadmium Chloride ◽  
Lactating Dairy Cows ◽  
Mineral Concentrations ◽  
Dietary Cadmium

scholarly journals Effects of dietary starch content and rate of fermentation on methane production in lactating dairy cows

2015 ◽  
Vol 98 (1) ◽  
pp. 486-499 ◽  
Author(s):  
B. Hatew ◽  
S.C. Podesta ◽  
H. Van Laar ◽  
W.F. Pellikaan ◽  
J.L. Ellis ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Methane Production ◽  
Starch Content ◽  
Lactating Dairy Cows ◽  
Dietary Starch

scholarly journals Long-Term Mootral Application Impacts Methane Production and the Microbial Community in the Rumen Simulation Technique System

2021 ◽  
Vol 12 ◽  
Author(s):  
Johanna Brede ◽  
Manuela Peukert ◽  
Björn Egert ◽  
Gerhard Breves ◽  
Melanie Brede
Keyword(s):  
Microbial Community ◽  
Relative Abundance ◽  
Methane Production ◽  
Solid Phase ◽  
Methane Emissions ◽  
Simulation Technique ◽  
Feed Additive ◽  
Gene Copy ◽  
Long Term Effects

Methane emissions by ruminants contribute to global warming and result in a loss of dietary energy for the animals. One possibility of reducing methane emissions is by dietary strategies. In the present trial, we investigated the long-term effects of Mootral, a feed additive consisting of garlic powder (Allium sativum) and bitter orange extracts (Citrus aurantium), on fermentation parameters and the microbial community in the rumen simulation technique (RUSITEC) system. The experiment lasted 38 days and was divided into three phases: an equilibration period of 7 days, a baseline period (BL) of 3 days, and experimental period (EP) of 28 days. Twelve fermentation vessels were divided into three groups (n = 4): control (CON), short-term (ST), and long-term (LT) application. From day 11 to day 27, 1.7 g of Mootral was added to the ST vessels; LT vessels received 1.7 g of Mootral daily for the entire EP. With the onset of Mootral application, methane production was significantly reduced in both groups until day 18. Thereafter, the production rate returned to the initial quantity. Furthermore, the short chain fatty acid fermentation profile was significantly altered by Mootral application; the molar proportion of acetate decreased, while the proportions of propionate and butyrate increased. Metabolomic analysis revealed further changes in metabolite concentrations associated with the Mootral supplementation period. The methyl coenzyme-M reductase gene copy number was reduced in the liquid and solid phase, whereas the treatment did not affect the abundance of bacteria. At the end of the BL, Methanomicrobia was the most abundant archaeal class. Mootral supplementation induced an increase in the relative abundance of Methanomassiliicoccales and a reduction in the relative abundance of Methanomicrobia, however, this effect was transient. Abundances of bacterial families were only marginally altered by the treatment. In conclusion, Mootral has the transient ability to reduce methane production significantly due to a selective effect on archaea numbers and archaeal community composition with little effect on the bacterial community.

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