Ruminal and intestinal protein degradability of various seaweed species measured in situ in dairy cows

2016 ◽  
Vol 213 ◽  
pp. 44-54 ◽  
Author(s):  
Usama Tayyab ◽  
Margarita Novoa-Garrido ◽  
Michael Y. Roleda ◽  
Vibeke Lind ◽  
Martin Riis Weisbjerg
Keyword(s):  
Dairy Cows ◽  
Seaweed Species ◽  
Intestinal Protein ◽  
Protein Degradability

scholarly journals In Vivo and in Situ Protein Degradability in Rumen and Milk Production of Dairy Cows

1989 ◽  
Vol 2 (3) ◽  
pp. 377-378
Author(s):  
N. A. Todorov ◽  
I. R. Karabaliev ◽  
A. Petkov ◽  
E. Enev ◽  
T. Tashev
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Protein Degradability

Ruminal crude protein degradability parameters of some feedstuffs using in situ technique

2009 ◽  
Vol 2009 ◽  
pp. 172-172
Author(s):  
M Besharati ◽  
A Taghizadeh ◽  
H Janmohamadi ◽  
G A Moghadam
Keyword(s):  
Dairy Cows ◽  
Crude Protein ◽  
Low Cost ◽  
Grape Pomace ◽  
Time Intervals ◽  
Laboratory Methods ◽  
By Products ◽  
Disposal Problem ◽  
Protein Degradability

The in situ technique has been used widely for estimating ruminal nutrient degradation and to provide estimates of both the rate and extent of disappearance of feed constituents (Mehrez and Ørskov, 1977), because it is a relatively simple, low-cost method compared with methods involving intestinally cannulated animals. This technique provides a useful means to estimate rates of disappearance and potential degradability of feedstuffs and feed constituents. The technique involves suspending bags containing different feedstuffs in the rumen and measuring nutrient disappearance at various time intervals. Hence, it also may provide an advantage compared with laboratory methods because it involves digestive processes that occur in the rumen of a living animal; however, several factors affect estimates of nutrient digestion and need to be controlled for this technique to be standardised. Feeding by-products to dairy cows and other livestock will probably continue to increase in the future. By-product feeds fed to dairy cows and other livestock prevents a waste disposal problem for industry and reduces the amount of concentrate that must be included in the diet to ensure maximum animal performance. The object of this study was to estimate in situ crude protein degradability of dried grape by-product (DGB), noodle waste (NW), tomato pomace (TP), apple pomace (AP) and grape pomace (GP) using the in situ technique.

Amino acid profiles of nine seaweed species and their in situ degradability in dairy cows

2018 ◽  
Vol 241 ◽  
pp. 210-222 ◽  
Author(s):  
Charlotte Gaillard ◽  
Hamzah Shahbaz Bhatti ◽  
Margarita Novoa-Garrido ◽  
Vibeke Lind ◽  
Michael Y. Roleda ◽  
...  
Keyword(s):  
Amino Acid ◽  
Dairy Cows ◽  
Seaweed Species ◽  
Amino Acid Profiles

Use of enzymatic solubility with ficin (EC 3.4.22.3) to predict in situ feed protein degradability

1996 ◽  
Vol 59 (4) ◽  
pp. 245-254 ◽  
Author(s):  
I. Kosmala ◽  
A. Antoniewicz ◽  
J. De Boever ◽  
T. Hvelplund ◽  
J. Kowalczyk
Keyword(s):  
Feed Protein ◽  
Protein Degradability

INFLUENCE OF AMMONIATION OF HIGH MOISTURE BARLEY ON ITS IN SITU RUMEN DEGRADATION AND INFLUENCE ON RUMEN FERMENTATION IN DAIRY COWS

1988 ◽  
Vol 68 (3) ◽  
pp. 839-851 ◽  
Author(s):  
P. H. ROBINSON ◽  
J. J. KENNELLY
Keyword(s):  
Dairy Cows ◽  
Rumen Fermentation ◽  
Feed Consumption ◽  
Vitamin Supplement ◽  
High Moisture ◽  
Rumen Degradation ◽  
Post Feeding ◽  
Rate Of Decline ◽  
Reduced Rate

High-moisture barley (HMB) was ammoniated at levels of 0, 0.65, 1.30, and 1.95% of dry matter (DM) and stored in 6-t lots in large plastic silage bags. In situ rumen degradation rate of DM in HMB decreased with increased level of ammoniation, nitrogen component degradation was little influenced, and neutral detergent residue degradation increased. Three dairy cows with large rumen cannulae were fed totally mixed diets twice daily in five experimental periods. Diets contained 490 g kg−1 oat silage, 385 g kg−1 HMB, and 125 g kg−1 of a protein-mineral-vitamin supplement. Measurements were made from weeks 18 to 33 of lactation to determine effects of ammoniation of HMB on levels and patterns of feed intake, as well as parameters of rumen fermentation. Cows tended to eat diets more rapidly as ammoniation level of substituted HMB increased, although total DM intake was not influenced. Rate of decline of rumen pH, and accumulation of butyrate, post-feeding was less pronounced as level of ammoniation of substituted HMB increased, supporting reduced rate of rumen degradation of HMB. However, total extent of change was greater, perhaps reflecting more rapid feed consumption post-feeding. Increased rumen acetate and butyrate concentrations as well as reduced concentration of 3 methyl butyrate suggests greater rumen fiber fermentation may have occurred as level of ammoniation of substituted HMB increased. Key words: Cows (dairy), ammoniation, high-moisture barley

The ability of the ficin enzyme technique to predict the in situ degradability of lucerne N

1999 ◽  
Vol 1999 ◽  
pp. 156-156
Author(s):  
G. Gizzi ◽  
E.R. Deaville ◽  
D.I. Givens
Keyword(s):  
Protein Degradation ◽  
Microbial Population ◽  
Reasonable Accuracy ◽  
Complex Process ◽  
Ruminal Protein Degradability ◽  
Protein Degradability

The assessment of protein degradability in the rumen is a complex process. The infinite combination of interaction between the rumen microbial population and the nature of the protein fed to the animal makes the estimation of ruminal protein degradability very arduous. At present the in situ technique is the most popular means of predicting ruminal nitrogen (N) degradation. However this procedure is slow, expensive and relies on the use of numerous surgically prepared animals. A number of studies (Assoumani et al., 1992; Aufrère and Cartailler, 1988) have shown that the use of in vitro methods using proteases can predict with reasonable accuracy the extent of protein degradation. The objective of this experiment was to examine the possibility of replacing the in situ technique with an in vitro procedure based on the use of the ficin protease to predict the extent of N degradation.

In vitro digestion and ruminal degradation of soybean hulls

2007 ◽  
Vol 2007 ◽  
pp. 166-166 ◽  
Author(s):  
Hamid Mohammadzadeh ◽  
Ali Nikkhah ◽  
Kamran Reza-Yazdi ◽  
Hassan Mehrabani-Yeganeh
Keyword(s):  
Dairy Cows ◽  
In Vitro Digestion ◽  
Soybean Hulls ◽  
Lactating Dairy Cows ◽  
Ruminal Degradation ◽  
Ruminant Animals ◽  
Soybean Processing

Dairy producers use soyhulls, a byproduct of soybean processing, to replace either grain or forage in diets of lactating dairy cows. In view of the nutritional and economical value of soyhulls it is anticipated that this practice will continue to increase in popularity among nutritionists and producers of ruminant animals. According to the NRC (2001), SH contain 60.3% NDF and 44.6% ADF on a DM basis. Also The CP content of SH averaged 11.8%, which is within the range of 13.9± 4.6%. The objectives of this paper are to evaluate the in vitro DM and OM digestibility and in situ degradability of DM, CP and NDF contents of soybean hulls.

Effect of Metabolisable Protein on intake of grass silage and milk protein yield in dairy cows.

1994 ◽  
Vol 1994 ◽  
pp. 113-113 ◽  
Author(s):  
J.R. Newbold ◽  
B.R. Cottrill ◽  
R.M. Mansbridge ◽  
J.S. Blake
Keyword(s):  
Dairy Cows ◽  
Milk Protein ◽  
Live Weight ◽  
Protein Yield ◽  
Holstein Cows ◽  
Grass Silage ◽  
Lactating Dairy Cows ◽  
Ad Libitum ◽  
Few Data

Few data are available to evaluate the Metabolisable Protein (MP) System (AFRC, 1992) as an aid to ration formulation for dairy cows. Responses of lactating dairy cows to MP were evaluated in two experiments.In Experiment One, groups of 10 Holstein cows were offered grass silage ad libitum and 7kg DM/d of one of six (treatments 1-6) compound foods from 39d after calving, for eight weeks. All rations were isoenergetic, assuming silage intake of 11kg DM/d (typical for the herd). Ratios between MP supply (calculated from in situ protein degradability measurements) and requirement (calculated for a standard cow: 565kg live weight, 281 milk/d, 40g/kg butterfat, 33g/kg milk protein, liveweight change =0kg/d) were 1.00, 1.02, 1.06, 1.06, 1.1 and 1.17 for treatments 1-6, respectively.

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