scholarly journals Further quantitative data on the role of the ruminant proventriculi in the digestion and absorption of nitrogen-free organic matter

1960 ◽  
Vol 32 (1) ◽  
pp. 219-222
Author(s):  
L. Paloheimo ◽  
A. Mäkelä

Using a method previously described the share of the proventriculi in the digestion of nitrogen-free non-lignin organic matter in cows was determined. The cows used in the experiments can be divided into 5 groups according to their food combination: 1) hay as the only food, 2) hay and concentrates in a ratio of 1:0.5, 3) hay and concentrates in a ratio of 1:1, 4) hay and beet pulp in the dry matter ratio of 1:0.5, and 5) hay and swedes in the dry matter ratio of 1:0.5. Omitting some obviously erroneous results the share of the proventriculi seems to vary between 58 and 96 %. This share is largest in group 5 and smallest in groups where the cows were fed with hay and concentrates. In none of the groups did the amount of dry matter consumed seem to have any influence upon the results.

Author(s):  
Yogi Ramdani, Erwanto, Farida Fathul, dan Liman

This study aimed to investigate the effect of adding multi nutrient sauce to rations on the digestibility of dry matter and organic matter in sheep. This research was conducted in May--July 2019 in Kebagusan Village, Gedong Tataan District, Pesawaran Regency. Analysis of feed ingredients and feces was carried out at the Animal Nutrition and Feed Laboratory, Department of Animal Husbandry, Faculty of Agriculture, University of Lampung. This research was conducted experimentally using the Randomized Block Design (RBD) method. Sheep were divided into six groups based on body weight, namely group 1 (11,18--13,18 kg), group 2 (13,97--14,13 kg), group 3 (14,31--14,51 kg), group 4 (14,89--15,91 kg), group 5 (16,35--16,66 kg), and group 6 (17,15--17,77 kg). Each group consisted of 3 sheep. Treatment given were R0: basal ration formulated by farmer (forage silage + cassava byproduct), R1: R0 + 5% multi nutrient sauce, R2: R0 + 10% multi nutrient sauce. The results showed that the addition of 10% multi nutrient sauce was the best treatment that could improve the digestibility of dry matter and organic matter in sheep.   Key word : Multi nutrient sauce, Dry matter digestibility, Digestibility of organic matter, Sheep.


1981 ◽  
Vol 21 (111) ◽  
pp. 367 ◽  
Author(s):  
SR McLennan ◽  
GS Wright ◽  
GW Blight

A pen feeding experiment was conducted in which steers were fed rice straw (0.68% nitrogen, 0.09% sulfur, dry matter basis) with urea alone; urea and molasses, or sodium sulfate; or all three supplements. The role of rice straw as a drought ration, and the effects of the supplements on intake and liveweight, were examined. Urea alone increased roughage organic matter intake by 14% (P=0.07) and total organic matter intake by 16% (P<0.05). Addition of molasses or sodium sulfate or both to the rice straw had no significant effect on intake (P>0.05). A urea supplement reduced liveweight loss from 149 to 86 g/head.d (P<0.05). In general, the small amounts of molasses and sodium sulfate had little effect on liveweight.


Author(s):  
I. Kyriazakis ◽  
G.C. Emmans ◽  
G.W. Horgan

When a highly digestible food is progressively diluted with one of greater ‘bulk’ the prevailing view is that the rate of food intake will initially increase at such a rate such that DE intake remains constant and, that beyond a critical point, intake of food and DE will fall as the dilution proceeds further. The critical point has been assumed to reflect the capacity of the pig for ‘bulk’. Current models which attempt to predict the voluntary food intake (VFI) of pigs use either food dry matter (DM) as a measure of bulk (eg Whittemore, 1983) or the undigested organic matter (eg Roan, 1991), or ignore the problem (ARC, 1981). It has long been known however, that such views are likely to be inadequate across the complete range of foods (eg the significant reduction in VFI of pigs on foods based on sugar beet pulp, compared to that on other more undigestible materials).The experiment described here was designed (i) to try to identify the property of ‘bulky’ foods which might be responsible for limiting their VFI and (ii) to see the extent to which the capacity for a ‘bulky’ food might be modified by prior experience.


Author(s):  
Selma Büyükkılıç Beyzi ◽  
İsmail Ülger ◽  
Mahmut Kaliber ◽  
Yusuf Konca

This study was carried out to investigate the possibilities of making silage from fruit juice industry waste.For this purpose, orange, lemon and tangerine pulp silage quality have been determined by comparing silage with maize and beet pulp silage.Treatment groups; 1) orange, 2) tangerine, 3) lemon, 4) maize and 5) sugar beet pulp. The silages were evaluated after 2 months from ensiling in the following areas: subjective evaluation, pH, dry matter, organic matter, crude protein, acid detergent fiber, neutral detergent fiber, ether extract and energy values (metabolizable energy) and net energy for lactation were calculated. As a result, it was determined that fruit juice industry residues were lower in terms of dry matter, but they contained higher energy due to their high organic matter content, digestibility and low cellulose content. In addition, it was determined that citrus pulp was evaluated as silage without any contribution.


1955 ◽  
Vol 27 (1) ◽  
pp. 70-76
Author(s):  
L. Paloheimo ◽  
A. Mäkelä ◽  
M.-L. Salo

Fourteen cows and five young bulls were fed with hay uniformly during 10 days. After slaughtering, the ingesta of the abomasum were removed and sampled. From the hay, from the contents of the abomasum, and from the feces lignin, N-free organic matter, and N-free non-lignin organic matter were determined. Using the lignin ratio principle, the digestibility of the two N-free fractions was calculated both for the proventriculi and for the whole digestive tract. It appeared that of the total amount of the N-free non-lignin organic matter digested in the whole digestive tract, 76—99 % was digested in the proventriculi. If the results for two of the cows are discarded, the limits in the cows are 85 and 91 %. On the basis of this investigation it can be concluded that in cattle carbohydrates are digested mainly in the proventriculi and their degradation products are absorbed principally from these stomachs.


Author(s):  
Janet H. Woodward ◽  
D. E. Akin

Silicon (Si) is distributed throughout plant tissues, but its role in forages has not been clarified. Although Si has been suggested as an antiquality factor which limits the digestibility of structural carbohydrates, other research indicates that its presence in plants does not affect digestibility. We employed x-ray microanalysis to evaluate Si as an antiquality factor at specific sites of two cultivars of bermuda grass (Cynodon dactvlon (L.) Pers.). “Coastal” and “Tifton-78” were chosen for this study because previous work in our lab has shown that, although these two grasses are similar ultrastructurally, they differ in in vitro dry matter digestibility and in percent composition of Si.Two millimeter leaf sections of Tifton-7 8 (Tift-7 8) and Coastal (CBG) were incubated for 72 hr in 2.5% (w/v) cellulase in 0.05 M sodium acetate buffer, pH 5.0. For controls, sections were incubated in the sodium acetate buffer or were not treated.


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