Author: David Joseph KomanapalliPublisher:
ISBN:
Category : Holstein-Friesian cattle
Languages : en
Pages : 96
Book Description
Effect of Niacin Supplementation on Milk Yield and Composition in Whole Cottonseed Fed Dairy Cows
Author: David Joseph KomanapalliPublisher:
ISBN:
Category : Holstein-Friesian cattle
Languages : en
Pages : 96
Book Description
Nutritional and Physiological Aspects of Supplementing Niacin and Dietary Fat in Lactation Rations
Author: Jimmy Lynn HornerPublisher:
ISBN:
Category : Dairy cattle
Languages : en
Pages : 212
Book Description
Investigations on the effects of niacin supplementation to different rations on rumen fermentation, duodenal nutrient flow and several serum and milk parameters of dairy cows
Author: Inka-Donata NiehoffPublisher: Cuvillier Verlag
ISBN: 3736931352
Category : Science
Languages : en
Pages : 146
Book Description
Due to the incorporation of niacin into the coenzymes NAD and NADP, niacin is of great importance for the metabolism of man and animals. Apart from niacin in feed and endogenous formation, microbial niacin synthesis in the rumen is an important source for dairy cows. But the amount synthesized seems to differ greatly, which might be influenced by the ration fed. Many studies revealed a positive impact of a niacin supplementation on rumen protozoa, but microbial protein synthesis or volatile fatty acid production in the rumen showed inconsistent reactions to supplemental niacin. The amount of niacin reaching the duodenum is usually higher when niacin is fed. But not the whole quantity supplemented reaches the duodenum, indicating degradation or absorption before the duodenal cannula. Furthermore, supplementation of niacin did not always lead to a higher niacin concentration in blood. Effects on other blood parameters have been inconsistent, but might be more obvious when cows are in a tense metabolic situation, for example, ketosis or if high amounts are infused post-ruminally, since ruminal degradation appears to be substantial. The same is valid for milk parameters. In the few studies where blood niacin and milk parameters have been investigated, enhanced niacin concentrations in blood did not necessarily affect milk production or composition. These results are discussed in the present review, gaps of knowledge of niacin’s mode of action on the metabolism of dairy cows are identified and directions for future research are suggested.
Effect of Increasing Amounts of Processed Pima Cottonseed on Production Performance of Lactating Holstein Cows
Author: Jorge Gaton PrietoEffects of Nonfiber Carbohydrate and Niacin on Periparturient Metabolic Status and Lactation Performance of Dairy Cows
Author: Douglas John MinorEffect of Iron Sulfate Supplementation of the Diet on Plasma Gossypol Concentration and Productivity of Lactating Holstein Cows Fed Cracked Pima Cottonseed
Author: Kelly Michiko McCaugheyPublisher:
ISBN:
Category :
Languages : en
Pages : 128
Book Description
Condition Scoring of Cattle
Author: B. G. LowmanPublisher:
ISBN: 9780902164239
Category : Cattle
Languages : en
Pages : 31
Book Description
Supplementation of Niacin to Lactating Cows Under Heat Stress Conditions and Its Effect on Milk Yield and Composition
Author: Nazam KhanEvaluation of Partial Replacement of Forage with Nondelinted Whole Cottonseed in the Diets of Lactating Dairy Cows
Author: Thomas J. EarleywinePublisher:
ISBN:
Category : Cottonseed meal as feed
Languages : en
Pages : 152
Book Description
Author: Todd Christen Skaar