scholarly journals Effects of feeding birdsfoot trefoil hay on neutral detergent fiber digestion, nitrogen utilization efficiency, and lactational performance by dairy cows

2015 ◽  
Vol 98 (11) ◽  
pp. 7982-7992 ◽  
Author(s):  
R.G. Christensen ◽  
S.Y. Yang ◽  
J.-S. Eun ◽  
A.J. Young ◽  
J.O. Hall ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Nitrogen Utilization ◽  
Neutral Detergent Fiber ◽  
Utilization Efficiency ◽  
Birdsfoot Trefoil ◽  
Fiber Digestion ◽  
Nitrogen Utilization Efficiency ◽  
Lactational Performance

scholarly journals Effect of Different Tannin Sources on Nutrient Intake, Digestibility, Performance, Nitrogen Utilization, and Blood Parameters in Dairy Cows

Animals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 507 ◽  
Author(s):  
Zhang ◽  
Xu ◽  
Cao ◽  
Wang ◽  
Yang ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Nutrient Intake ◽  
Control Diet ◽  
Nitrogen Retention ◽  
Blood Parameters ◽  
Nitrogen Utilization ◽  
Utilization Efficiency ◽  
Nitrogen Excretion ◽  
Nitrogen Utilization Efficiency ◽  
Dietary Treatments

This study investigated the effect of tannin sources on nutrient intake, digestibility, performance, nitrogen utilization, and blood parameters in lactating dairy cows. Four multiparous lactating Holstein cows were used in a balanced 4 × 4 Latin square design, with each period lasting 28 days. Cows were randomly assigned to one of four dietary treatments: Control diet (CON, a totally mixed ration without tannin supplements), control diet supplemented with 3% bayberry condensed tannins (BCT), control diet supplemented with 3% Acacia mangium condensed tannins (ACT), and control diet supplemented with 3% valonia hydrolyzed tannins (VHT). Dietary treatments did not significantly affect nutrient intake, milk yield or composition, microbial protein synthesis, nitrogen utilization efficiency, or plasma concentrations of glucose, non-esterified fatty acids, β-hydroxybutyrate, total protein, and globulin, or the albumin-to-globulin ratio. Tannin supplements decreased the apparent total tract nutrient digestibility to varying degrees and significantly decreased the milk and blood urea nitrogen contents (p < 0.05). Tannin supplements altered nitrogen excretion routes in lactating dairy cows, and BCT significantly decreased the urinary nitrogen excretion (p = 0.04). Compared with the CON, ACT, and VHT diets, BCT yielded the highest nitrogen retention and nitrogen retention-to-digestible nitrogen ratio despite having a similar nitrogen utilization efficiency (p < 0.05). Bayberry condensed tannin supplementation may be a potential way to improve nitrogen utilization and reduce concerns regarding nitrogen excretion in dairy cows.

scholarly journals Supplementation of grazing suckling beef calves receiving different energy sources

2016 ◽  
Vol 37 (3) ◽  
pp. 1527
Author(s):  
Josilaine Aparecida da Costa Lima ◽  
Mário Fonseca Paulino ◽  
Edenio Detmann ◽  
Luciana Navajas Rennó ◽  
Henrique Jorge Fernandes ◽  
...  
Keyword(s):  
Organic Matter ◽  
Wheat Bran ◽  
Crude Protein ◽  
Nitrogen Utilization ◽  
Neutral Detergent Fiber ◽  
The Other ◽  
Utilization Efficiency ◽  
Energy Sources ◽  
Beef Calves ◽  
Nitrogen Utilization Efficiency

The aim of this study was to evaluate the effect of different energy sources - corn, sorghum, and wheat bran - on performance, intake, digestibility, and nitrogen utilization efficiency of beef calves subjected to creep feeding. Thirty-four calves (12 males and 22 females) with initial age and weight of four months and 108±3.9 kg, respectively, were used in a randomized-block experimental design with four treatments and two blocks (males and females). Treatments were control (MM), a mineral mixture ad libitum; corn (C); corn + sorghum (C+S); and corn + sorghum + wheat bran (C+S+WB). Supplements contained approximately 20% crude protein (CP), and were fed in the amount of 0.5% of body weight. Supplemented animals had higher performance (P &lt; 0.05) when compared with those on treatment MM. Supplementation increased (P &lt; 0.05) the intakes of dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fiber corrected for ash and protein (NDFap), non-fibrous carbohydrates (NFC), digestible neutral detergent fiber (dNDF), and digestible organic matter (dOM). The digestibility of NFC was higher (P &lt; 0.05) in the supplemented treatments. The C+S and C+S+WB treatments provided increased digestibility (P &lt; 0.05) of OM, CP, and NDFap. The synthesis of nitrogen compounds was higher (P &lt; 0.05) in animals on treatment C as compared with those on the other supplemented treatments. Animals on treatments C+S and C+S+WB had higher (P &lt; 0.05) nitrogen utilization efficiency compared with those on the other treatments. Concentrate supplementation improved the animal performance. The use of other energy sources (sorghum or wheat bran) in association with corn is recommended for suckling calves.

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