scholarly journals Omasal Flow of Soluble Proteins, Peptides, and Free Amino Acids in Dairy Cows Fed Diets Supplemented with Proteins of Varying Ruminal Degradabilities

2007 ◽  
Vol 90 (4) ◽  
pp. 1887-1903 ◽  
Author(s):  
S.M. Reynal ◽  
I.R. Ipharraguerre ◽  
M. Liñeiro ◽  
A.F. Brito ◽  
G.A. Broderick ◽  
...  
Keyword(s):  
Amino Acids ◽  
Dairy Cows ◽  
Free Amino Acids ◽  
Free Amino ◽  
Soluble Proteins

Effects of abomasal infusions of sodium caseinate, a hydrolysate of casein or a corresponding mixture of free amino acids on milk yield and composition in dairy cows

1995 ◽  
Vol 62 (1) ◽  
pp. 29-37 ◽  
Author(s):  
Jai-Jun Choung ◽  
David G. Chamberlain
Keyword(s):  
Amino Acids ◽  
Dairy Cows ◽  
Free Amino Acids ◽  
Free Amino ◽  
Milk Protein ◽  
Bioactive Peptides ◽  
Basal Diet ◽  
Sodium Caseinate ◽  
Amino Acid Residues ◽  
Kinetics Of

SummaryThe effects of the form in which amino acids are presented to the abomasum on the milk production of dairy cows receiving a basal diet of grass silage and a barley-based supplement were examined in two experiments. Effects of abomasal infusions of sodium caseinate were compared with the effects of corresponding levels of either an enzymic hydrolysate of casein (Expt 1) or a corresponding mixture of free amino acids (FAA; Expt 2). In Expt 1, although the yield of protein in milk increased progressively with each level of infusion, the yields of protein were greater for the caseinate than for the hydrolysate. Again, in Expt 2, for milk protein yield, sodium caseinate was superior to FAA at the lower level of infusion. In both experiments, the hydrolysate and FAA treatments were associated with higher concentrations of fat in the milk. There were indications of differences in the pattern of secretion of glucagon between the caseinate and FAA treatments. It is concluded that the differences between treatments relate either to the kinetics of absorption of amino acid residues or to the action of bioactive peptides released during digestion of casein.

scholarly journals Pre- and post-calving plasma-free amino acids in high-yielding dairy cows

1994 ◽  
Vol 43 (3) ◽  
pp. 306-306
Author(s):  
G. Piva ◽  
F. Masoero ◽  
L. Fiorentini ◽  
M. Moschini
Keyword(s):  
Amino Acids ◽  
Dairy Cows ◽  
Free Amino Acids ◽  
Free Amino ◽  
Plasma Free Amino Acids

Effect of Rumen-Protected Methionine on Plasma Free Amino Acids and Production by Dairy Cows

1984 ◽  
Vol 114 (12) ◽  
pp. 2221-2227 ◽  
Author(s):  
Andreas M. Papas ◽  
John L. Vicini ◽  
Jimmy H. Clark ◽  
Sarah Peirce-Sandner
Keyword(s):  
Amino Acids ◽  
Dairy Cows ◽  
Free Amino Acids ◽  
Free Amino ◽  
Plasma Free Amino Acids

scholarly journals Evaluation of Whole Blood and Plasma in the Interorgan Supply of Free Amino Acids for the Mammary Gland of Lactating Dairy Cows

2000 ◽  
Vol 83 (6) ◽  
pp. 1300-1309 ◽  
Author(s):  
T.R. Mackle ◽  
D.A. Dwyer ◽  
K.L. Ingvartsen ◽  
P.Y. Chouinard ◽  
D.A. Ross ◽  
...  
Keyword(s):  
Amino Acids ◽  
Mammary Gland ◽  
Dairy Cows ◽  
Whole Blood ◽  
Free Amino Acids ◽  
Free Amino ◽  
Lactating Dairy Cows

scholarly journals On the amino acids in the urine of dairy cows fed urea as the sole or partial source of nitrogen

1977 ◽  
Vol 49 (4) ◽  
pp. 258-263
Author(s):  
Matti Kreula ◽  
Terttu Ettala
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Dairy Cows ◽  
Free Amino Acids ◽  
Free Amino ◽  
Ammonium Nitrogen ◽  
Important Amino Acid ◽  
Total Free Amino Acids ◽  
The Difference ◽  
Urinary Amino

The urinary amino acids in free and bound form were determined quantitatively in dairy cows fed urea and ammonium nitrogen as the sole (0-cows) or partial (ULP-cows) source of nitrogen. For comparison, amino acid determinations were performed also on the urine of cows on ordinary silage-cereals feed and pasture feed (NorP-cows). The total amount (mg/1 urine) of the free amino acids was the smallest with 0-cows and the highest with NorP-cows on pasture feeding. The difference was mainly due to glycine ,which was found in significantly higher (P < 0.001) amounts with NorP-cows on pasture feeding. The proportion of glycine in the total identified free amino acids was 9.7 ± 9.0 % with 0-cows, 13.5 ± 5.1 % with ULP-cows, 7.7 ±3.4 % with NorP-cows on indoor feeding and 56.4 ±21.0 % with NorP-cows on pasture feeding. The corresponding figures for glutamic acid, which was quantitatively the most important amino acid with 0- and ULP-cows, were 36.5 ± 29.6 %, 19.8 ± 19.2 %, 5.7 ±4.0 % and 3.9 ± 2.1 % of the total free amino acids. Besides the identified amino acids, there were a number of unidentified amino acid derivatives in the free amino acid fraction in all the feeding groups. The total amount of amino acids freed by hydrolysis was the lowest with 0-cows. The proportion of glycine of the amino acids of the hydrolysate was48 % with 0-cows, 66 % with ULP-cows and 84 % with NorP-cows.

scholarly journals Protein Hydrolysate Combined with Hydroponics Divergently Modifies Growth and Shuffles Pigments and Free Amino Acids of Carrot and Dill Microgreens

Horticulturae ◽  
2021 ◽  
Vol 7 (9) ◽  
pp. 279
Author(s):  
Christophe El-Nakhel ◽  
Michele Ciriello ◽  
Luigi Formisano ◽  
Antonio Pannico ◽  
Maria Giordano ◽  
...  
Keyword(s):  
Amino Acids ◽  
Nutrient Solution ◽  
Free Amino Acids ◽  
Free Amino ◽  
Large Scale ◽  
Protein Hydrolysate ◽  
Soluble Proteins ◽  
Bioactive Metabolites ◽  
Future Research ◽  
Floating Raft

Microgreens are the new sophisticated commodity in horticulture that boost the human diet with bioactive metabolites and garnish it with colors and tastes. Microgreens thrive well when cultivated in soilless systems, of which closed-loop soilless systems combined with biostimulant application can provide a sustainable, innovative method of growing microgreens. Daucus carota L. and Anethum graveolens L. microgreens were grown in greenhouse conditions implementing a floating raft system combined with a protein hydrolysate of leguminous origin as root application (0.3 mL L−1 nutrient solution). Growth, colorimetric parameters, macronutrients, chlorophylls, carotenoids, carbohydrates, free amino acids, and soluble proteins were assessed. The use of a protein hydrolysate in the nutrient solution engendered an increase in anthocyanins (+461.7%) and total phenols (+12.4%) in carrot, while in dill, the fresh yield (+13.5%) and ascorbic acid (+17.2%) increased. In both species, soluble proteins and total free amino acids increased by 20.6% and 18.5%, respectively. The floating raft system proved to be promising for microgreens and can ease the application of biostimulants through root application. Future research should also investigate the yield and nutritional parameter responses of other species of microgreens with the aim of large-scale sustainable production.

scholarly journals The ex vitro rooting of blueberry (Vaccinium corymbosum L.) microcuttings

2015 ◽  
Vol 27 (2) ◽  
pp. 145-150 ◽  
Author(s):  
Andrzej Pacholczak ◽  
Karolina Nowakowska
Keyword(s):  
Amino Acids ◽  
Salicylic Acid ◽  
Free Amino Acids ◽  
Free Amino ◽  
Reducing Sugars ◽  
Vaccinium Corymbosum ◽  
Soluble Proteins ◽  
Rooted Cuttings ◽  
Planting Material

Abstract A growing demand for blueberry fruit has necessitated the development of an efficient propagation method of this species that would provide large quantities of planting material. The aim of this study was to evaluate the effects of auxin indole-3-butyric acid (IBA 50 mg dm−3), the commercial rooting powder Rhizopon containing 1% IBA, and salicylic acid (50 mg dm−3) on the in vivo rooting of microcuttings of Vaccinium corymbosum ‘Bluecrop’ and ‘Duke’. The contents of chlorophyll a + b, soluble proteins, free amino acids, as well as total soluble and reducing sugars were determined in rooted cuttings. All of the treatments increased the degree and percentage of rooting in the cuttings of both cultivars. While improving rhizogenesis in blueberry, salicylic acid did not perform as a cofactor of the auxin IBA. Foliar applications of IBA or salicylic acid (SA) increased the contents of soluble proteins, free amino acids and sugars, but no effects on chlorophyll levels were observed.

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