scholarly journals Acidification of urine by feeding anionic products to non-lactating dairy cows

2003 ◽  
Vol 83 (2) ◽  
pp. 319-321 ◽  
Author(s):  
G. R. Bowman ◽  
K. A. Beauchemin ◽  
L. M. Rode
Keyword(s):  
Dairy Cows ◽  
Key Words ◽  
Dairy Cow ◽  
Urine Ph ◽  
Total Mixed Ration ◽  
Temporal Effects ◽  
Lactating Dairy Cows

Three commercial anionic products (Bio-Chlor MM™, Bio-Chlor FR™ and SoyChlor 16-7™) were fed to non-lactating dairy cows in a total mixed ration (TMR). After the anionic products were included in the TMR at the manufacturers’ recommendations for 4-d, all products reduced urine pH below the desired threshold of 6.5. The rate at which the products reached nadir urine pH differed among the products, but once acidification was accomplished temporal effects on pH were minimal. Key words: Urine pH, dietary cation-anion difference, prepartum, dairy cow, non-lactating

Effects of feeding anionic products to non-lactating dairy cows on urine pH

2003 ◽  
Vol 83 (3) ◽  
pp. 609-612 ◽  
Author(s):  
K. A. Beauchemin ◽  
G. R. Bowman ◽  
L. M. Rode ◽  
M. A. G. von Keyserlingk
Keyword(s):  
Dairy Cows ◽  
Key Words ◽  
Dairy Cow ◽  
Urine Ph ◽  
Once Daily ◽  
Urine Acidification ◽  
Lactating Dairy Cows

Anionic products (anionic salts, Bio-Chlor™, Nutri-Chlor™, and SoyChlor 16-7™ ) were fed to 12 non-lactating dairy cows and urine pH was monitored. The products differed in their effectiveness: anionic salts, Bio-Chlor, and Nutri-Chlor lowered urine pH, but SoyChlor was not effective. For cows fed once daily, checking urine pH 12 to 18 h after feeding is most likely to indicate nadir pH. Key words: Dietary cation-anion difference, urine acidification, urine pH, dairy cow, non-lactating

Effect of monensin on meal frequency during sub-acute ruminal acidosis in dairy cows

2005 ◽  
Vol 85 (2) ◽  
pp. 247-249 ◽  
Author(s):  
D. E. Lunn ◽  
T. Mutsvangwa ◽  
N. E. Odongo ◽  
T. F. Duffield ◽  
R. Bagg ◽  
...  
Keyword(s):  
Controlled Release ◽  
Dairy Cows ◽  
Key Words ◽  
Recovery Period ◽  
Meal Frequency ◽  
Total Mixed Ration ◽  
Ruminal Acidosis ◽  
Lactating Dairy Cows ◽  
Ad Libitum ◽  
Ad Libitum Intake

Two experiments were conducted to determine the effects of monensin (Rumensin® controlled-release capsule; exp. 1 and Rumensin® Premix; exp. 2) on meal frequency during grain-induced sub-acute ruminal acidosis (SARA) in Holstein dairy cows. SARA was induced by restricting total mixed ration intake to 85% of ad libitum intake and replacing the remaining 15% with a grain pellet consisting of 50% wheat and 50% barley. In both experiments, meal frequency during SARA was lower (P < 0.05) than meal frequency during the adaptation and recovery periods. In exp. 2, monensin increased meal frequency during SARA (6.0 vs. 7.2, P = 0.04) and meal frequency during the recovery period (7.5 vs. 9.0, P = 0.004). These results suggest monensin premix may increase meal frequency in lactating dairy cows under conditions of SARA. Key words: dairy cows, monensin, ruminal acidosis, meal frequency

Effect of subacute ruminal acidosis on in situ digestion of mixed hay in lactating dairy cows

2001 ◽  
Vol 81 (3) ◽  
pp. 421-423 ◽  
Author(s):  
J. C. Plaizier ◽  
J. E. Keunen ◽  
J-P. Walton ◽  
T. F. Duffield ◽  
B. W. McBride
Keyword(s):  
Dairy Cows ◽  
Key Words ◽  
Dry Matter ◽  
Subacute Ruminal Acidosis ◽  
Total Mixed Ration ◽  
Neutral Detergent Fibre ◽  
Ruminal Acidosis ◽  
Lactating Dairy Cows

Induction of subacute ruminal acidosis (SARA) by replacing 25% of the total mixed ration (TMR) intake [dry matter (DM) basis] with pellets consisting of 50% wheat and 50% barley, reduced the in situ DM and neutral detergent fibre (NDF) digestion of mixed hay. In situ 48 h NDF disappearance was reduced from 39.5 to 30.9% (P < 0.05). Key words: Sub-acute ruminal acidosis, fibre digestibilty, dairy cows

The effect of asynchronous diets on the function of the rumen in the lactating dairy cow

1998 ◽  
Vol 1998 ◽  
pp. 19-19
Author(s):  
A.R. Henderson ◽  
P.C. Garnsworthy ◽  
J.R. Newbold ◽  
P.J. Buttery
Keyword(s):  
Protein Synthesis ◽  
Dairy Cows ◽  
Dairy Cow ◽  
Production Performance ◽  
Early Lactation ◽  
Microbial Protein ◽  
Nutrient Flows ◽  
Lactating Dairy Cows ◽  
Overall Efficiency ◽  
Fermentation Parameters

Sinclair et al. (1993) found that a diet formulated to be synchronous with regard to hourly release of nitrogen and energy increased microbial protein synthesis by 14% in sheep. Dairy cows in early lactation experience a shortfall of energy and protein, with available protein determining the overall efficiency of metabolism (MacRae and Lobley, 1986) and subsequent milk production. It is therefore necessary to maximise microbial protein yield during this period. In this study diets were designed for lactating dairy cows to contain the same feed ingredients, but to release nitrogen and energy in the rumen at different times. Rumen fermentation parameters, nutrient flows to the small intestine and production performance were investigated.

Replacement of soyabean meal by barley or wheat distillers grains for lactating dairy cows

2002 ◽  
Vol 2002 ◽  
pp. 108-108
Author(s):  
J.D. Sutton ◽  
D.J. Humphries ◽  
R H Phipps ◽  
M. Witt
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Dairy Cow ◽  
Present Experiment ◽  
Distillers Grains ◽  
Complete Replacement ◽  
Lactating Dairy Cows ◽  
Soyabean Meal

The complete replacement of soyabean meal by maize distillers grains (MDG) in dairy cow diets had no significant effects on milk production, rumen digestion or the supply of non-ammonia N to the duodenum (Sutton et al., 2000; Phipps et al., 2001). The present experiment was designed to extend this work by examining the response when barley (BDG) or wheat (WDG) distillers grains replaced soyabean meal.

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