Endogenous losses of phosphorus by sheep

1989 ◽  
Vol 113 (3) ◽  
pp. 291-297 ◽  
Author(s):  
J. H. Ternouth
Keyword(s):  
Dry Matter ◽  
Live Weight ◽  
Salivary Secretion ◽  
Dry Matter Intake ◽  
Barley Straw ◽  
Faecal Excretion ◽  
Physical Form ◽  
Dry Matter Concentration ◽  
P Balance ◽  
Matter Concentration

SUMMARYTwelve sheep were fed semisynthetic roughage diets at three rates to study the effects of intake of dry matter, concentration of phosphorus and the physical form of two low-P barley straws upon the faecal losses of P. The sheep were in negative P balance throughout the experiement. The absorption of dietary P increased with P intake and was unaffected by differences in the physical form of the roughage. For each barley straw diet, endogenous faecal P increased with dry matter intake, and was higher when the roughage was ground than chopped. Over the whole experiment, daily endogenous faecal P ranged from 8·5 to 31·5 mg/kg live weight. Endogenous faecal P was related to P intake or to dry matter intake and plasma inorganic P. The concentration of faecal endogenous P was negatively related to the intake of each diet. It is concluded that the concentration of inorganic plasma P and the rate of salivary secretion are responsible for the endogenous faecal excretion of P and the regulation of P balance in sheep fed low-P diets.

The effect of dry matter concentration on component digestibility and retention in growing/finishing pigs fed diets varying only in water:dry matter ratio

2002 ◽  
Vol 2002 ◽  
pp. 82-82
Author(s):  
J.E. Thompson ◽  
J. Wiseman ◽  
B.P. Gill
Keyword(s):  
Growth Performance ◽  
Dry Matter ◽  
Live Weight ◽  
Matter Content ◽  
Liquid Diet ◽  
Dry Matter Content ◽  
Finishing Pigs ◽  
Dry Matter Concentration ◽  
Matter Concentration

There is potential for improving the growth performance of pigs through a better understanding of factors that influence the digestibility of nutrients and energy in liquid feeds. These factors include dry matter content and the size and distribution of particles of the dry feed components within the liquid diet. The objective of the current study was to determine if changing the dry matter concentration of liquid feeds affects the digestibility and retention of nutrients and energy in pigs growing from 35kg to 95kg live weight.

The use of coarsely milled barley straw in finishing diets for young beef cattle

1969 ◽  
Vol 73 (3) ◽  
pp. 365-372 ◽  
Author(s):  
T. J. Forbes ◽  
A. M. Raven ◽  
J. H. D. Irwin
Keyword(s):  
Beef Cattle ◽  
Dry Matter ◽  
Live Weight ◽  
Dry Matter Intake ◽  
Barley Straw ◽  
Finishing Diets ◽  
Rate Of Increase ◽  
Significant Difference ◽  
Digestible Organic Matter ◽  
Linear Decline

SummaryAn experiment was carried out in which young beef cattle were given diets containing different levels of coarsely milled (1 in screen) barley straw. The proportions of straw used were 0, 10, 20, 30, 40 and 50 % and the performance of animals on these diets was compared with that of similar animals on an all concentrate diet. Each diet was given ad libitum to six animals. There was a significant linear decline in live-weight gain with increasing straw intake, the rate of decline being 0·62 ± 0·133 kg per week for each 10 % increase in the level of straw in the diet. The dry matter conversion ratio increased linearly with increasing straw intake, the rate of increase being 0·65 ± 0·186 units for each 10 % increase in straw in the diet. Dry matter intake was significantly (P < 0·001) affected by the proportion of straw in the diet. Although dry matter intake increased to a maximum at a level of 18·8% straw in the diet there was no significant increase in the intake of digestible organic matter (DOMI). There was a significant (P < 0·001) linear decline of 0·19 ± 0·04 kg DOMI with each 10% increase in straw in the diet. There was a significant linear decline in chilled carcase weight to the extent of 5·7 ± 0·096 kg for each 10% increase in straw. The killing-out percentage based on unfasted live weight declined significantly as the percentage of straw in the diet rose from 20 to 30%. However, when the killing-out percentage was calculated on the basis of live weight at slaughter less rumen contents there was no significant difference between treatments.

The intake and performance of ewes offered concentrates and grass silage in late pregnancy

1983 ◽  
Vol 36 (1) ◽  
pp. 21-27 ◽  
Author(s):  
R. J. Orr ◽  
J. E. Newton ◽  
Caroline A. Jackson
Keyword(s):  
Dry Matter ◽  
Body Condition Score ◽  
Live Weight ◽  
Late Pregnancy ◽  
First Year ◽  
Dry Matter Concentration ◽  
Condition Score ◽  
Voluntary Intake ◽  
And Performance ◽  
Matter Concentration

ABSTRACTMasham ewes carrying single, twin or triplet foetuses were offered a ration of concentrates which increased from 200 to 650 g per ewe per day over the last 7 weeks of pregnancy in 2 years. Silage was offered ad libitum and the voluntary intake of each ewe was measured. In the first year, 30 ewes were offered a poorly-preserved, wet silage (A) which had a low digestibility, followed by a better-preserved silage (B) which had a higher digestibility and dry-matter concentration. There was an increase in silage intake when the change was made from A to B. In the following year, 32 ewes were offered silage (C) which was well preserved, similar in digestibility to B but with a lower dry-matter concentration. The ewes ate more silage organic matter (g/kg live weight) with C than A (12·77 v. 9·34) in weeks 15 to 17 of pregnancy but more of B than C (13·76 v. 10·38) in weeks 19 to 20. Ewes carrying single lambs ate more silage and had a slower rate of decrease in silage intake when the concentrate ration was increased as pregnancy progressed. As litter size increased there-was either greater loss or smaller gain in body condition score.

Effect of ammonia treatment and supplementation on barley straw intake by sheep

1989 ◽  
Vol 1989 ◽  
pp. 105-105
Author(s):  
M. Fondevila ◽  
C. Castrillo ◽  
J. Gasa ◽  
J.A. Guada
Keyword(s):  
Sugar Beet ◽  
Dry Matter ◽  
Live Weight ◽  
Latin Squares ◽  
Sugar Beet Pulp ◽  
Dry Matter Intake ◽  
Barley Straw ◽  
Ammonia Treatment ◽  
Beet Pulp ◽  
Voluntary Intake

Twenty-eight lamb ewes (44 + 0.45 kg live weight) were used to study the effect of type and level of supplementation on voluntary intake of barley straw, treated with 30 g/kg of anhydrous ammonia (TS) or untreated (US) but given with urea to ensure the same nitrogen content as TS (18 g/kg DM). Each type of straw was offered ad libitum, supplemented with grass hay, rolled barley and sugar beet pulp at rates of 150, 300, 4 50 and 600 g/d, in 6 Latin Squares (4 x 4). In addition, another 2 sheep received each straw alone during the same periods. Supplements were totally consumed, except hay, which was refused in 10 - 13 and 28 - 34 per cent for US and TS, respectively.Daily dry matter intake (DMI) of US (OMD = 0.423) and TS (OMD = 0.515) offer as sole feed were 511 ± 29.1 and 858 ± 45.2 g. As show TABLE 1, US was consumed at rates of 527, 576 and 568 g DM when supplemented with 150 g of hay, barley and sugar beet pulp, and no significant differences were found with further levels of supplementation. DMI of TS decreased linearly from 850 to 618 g/d (r = 0.75) and from 717 to 518 g/d (r = 0.63) when the level of barley and sugar beet pulp increased from 150 to 600 g/d. Substitution rates were estimated to be 0.31 and 0.27 for barley and sugar beet pulp, respectively. Decrease in TS intake when supplemented since 150 to 600 g/d of hay (720 to 605 g, respectively) were found not significative.

Studies on the nutrition of ruminants. 3. The substitution of soya bean meal by urea in diets containing ground roughage and cereal

1968 ◽  
Vol 10 (2) ◽  
pp. 193-199 ◽  
Author(s):  
H. Swan ◽  
G. E. Lamming
Keyword(s):  
Weight Gain ◽  
Dry Matter ◽  
Live Weight ◽  
Soya Bean ◽  
Barley Straw ◽  
Apparent Digestibility ◽  
Physical Form ◽  
Significant Difference ◽  
Bean Meal ◽  
Soya Bean Meal

Thirty-two yearling Friesian steers were used in a 2 × 2 factorial experiment. The treatment variables were source of supplementary nitrogen and physical form of the diet. The diets contained 30% ground barley straw, ground maize, a nitrogen supplement, and minerals and vitamins. Urea was compared with soya bean meal as the nitrogen supplement and both diets were given as cubes or meal. There was no significant difference between treatments in daily live-weight gain, feed intake or commercial carcass acceptability.Digestibility trials with wethers showed the apparent digestibility of nitrogen and dry matter of the diet containing urea to be significantly lower than that of the diet containing soya bean meal (nitrogen 72·8 ν. 76·3, P < 0·001; dry matter 70·2 ν. 75·3, P < 0·01). The results are discussed in relation to the digestibility of the diets used, the source of supplementary nitrogen and the physical form of the diet.

A note on some of the factors that affect the water consumption of lactating dairy cows at pasture

1983 ◽  
Vol 36 (2) ◽  
pp. 303-306 ◽  
Author(s):  
C. R. Stockdale ◽  
K. R. King
Keyword(s):  
Dairy Cows ◽  
Water Intake ◽  
Water Consumption ◽  
Dry Matter ◽  
Dry Matter Intake ◽  
Total Water ◽  
Total Water Consumption ◽  
Lactating Dairy Cows ◽  
Dry Matter Concentration ◽  
Matter Concentration

ABSTRACTThe influence of the level of dry-matter intake and the dry-matter concentration in the diet on the water consumption of dairy cows in early lactation was investigated for a 2-month period from early August to early October. The importance of the various components of weather on voluntary water intake was also examined. The cows used in the experiment either grazed pasture alone, or were offered pasture and pasture hay supplements. Mean voluntary water intake increased by 2·30 kg per cow per day for every additional kg dry matter consumed and also increased by 0·053 kg per cow per day for each g/kg increase in dry matter concentration. Of the climatic factors, rainfall had the greatest single influence on the daily fluctuations in voluntary water intake and this was negative. Intake was also negatively related to minimum temperature, relative humidity and wind, and positively related to sunshine and evaporation. Although maximum temperature per se had no apparent influence on intake, it showed a positive relationship after the removal of the effects of rainfall. A model for the prediction of total water consumption is:Total water consumption (kg per cow per day) = 11·34 + 4·63 dry-matter intake (kg per cow per day) –0·036 dry-matter concentration (g/kg) + 0·84 mean temperature (°C).This can only be used to predict the water requirements of lactating dairy cows in different environments.

Accumulation, organic carbon and dry matter concentration of sediment in commercial channel catfish ponds

2004 ◽  
Vol 30 (3-4) ◽  
pp. 115-126 ◽  
Author(s):  
James A. Steeby ◽  
John A. Hargreaves ◽  
Craig S. Tucker ◽  
Sue Kingsbury
Keyword(s):  
Organic Carbon ◽  
Channel Catfish ◽  
Dry Matter ◽  
Dry Matter Concentration ◽  
Catfish Ponds ◽  
Matter Concentration

A note on propionic acid-treated barley of different moisture contents in the diets of growing pigs

1980 ◽  
Vol 31 (2) ◽  
pp. 213-215 ◽  
Author(s):  
D. J. A. Cole ◽  
I. H. Williams ◽  
P. R. English ◽  
J. R. Luscombe
Keyword(s):  
Propionic Acid ◽  
Acid Treatment ◽  
Dry Matter ◽  
Live Weight ◽  
Growing Pigs ◽  
Apparent Effect ◽  
Moisture Concentration ◽  
Moisture Contents ◽  
Physical Form ◽  
Conventional Manner

ABSTRACTGrowth and carcass traits were measured in pigs grown from 25 to 90 kg live weight on barley stored and prepared in different ways. Some of the barley was prepared in the conventional manner by drying to a moisture concentration of 140g/kg before hammer-milling. The remainder of the barley was rolled after treating batches, containing 140, 180 and 240 g moisture per kg, with propionic acid. A total of 128 pigs was used at three centres.There were no differences between the centres and no differences in the performance and carcass measurements of pigs given acid-treated and rolled, or untreated and milled barley, despite differences in physical form between the rolled and milled samples. When the intake of dry matter was equalized there was no apparent effect on the pigs of acid treatment of barley containing different amounts of moisture.

scholarly journals Effects of different restricted feeding strategies on performance of growing and finishing dairy bulls offered grass silage and barley based diets

2017 ◽  
Vol 26 (2) ◽  
Author(s):  
Katariina Manni ◽  
Marketta Rinne ◽  
Erkki Joki-Tokola ◽  
Arto Huuskonen
Keyword(s):  
Feed Efficiency ◽  
Dry Matter ◽  
Compensatory Growth ◽  
Live Weight ◽  
Dry Matter Intake ◽  
Feeding Strategies ◽  
Restricted Feeding ◽  
Grass Silage ◽  
Ad Libitum ◽  
Dairy Bulls

The objective of this study was to determine the effects of restricted feeding strategies on performance of growing and finishing dairy bulls. The feeding experiment comprised in total 32 Finnish Ayrshire bulls with an initial mean live weight (LW) of 122 kg and age of 114 days. Feeding treatments were silage ad libitum and daily barley allowance of 93 g kg-1 LW0.60 (A); restricted feeding (R) at 0.80 × A; increasing feeding (I) similar to R until LW of 430 kg and thereafter similar to A; and decreasing feeding (D) similar to A until LW of 430 kg and thereafter similar to R. Restricted feeding strategies decreased daily dry matter intake and LW gain and increased the time to reach the target carcass weight (300 kg). Bulls on I exhibited compensatory growth. There were no significant differences in feed efficiency between the treatments. The present experiment indicates that silage intake ad libitum and supplemented with concentrate resulted in most effective beef production.

scholarly journals Sowing methods of maise for hay in the forest-steppe zone of Western Siberia

2021 ◽  
pp. 31-36
Author(s):  
N. I. Kashevarov ◽  
A. A. Polishchuk ◽  
A. N. Lebedev ◽  
V. I. Ponamareva ◽  
M. V. Khazov
Keyword(s):  
Dry Matter ◽  
Single Species ◽  
Steppe Zone ◽  
Matter Content ◽  
Forest Steppe ◽  
Dry Matter Content ◽  
Seeding Rate ◽  
Dry Matter Concentration ◽  
Sowing Experiment ◽  
Matter Concentration

The authors showed the results of studies of productivity parameters of different early maturing maise hybrids depending on the method of sowing. Experiment included 5 variants: single- seeded hybrids Kubansky 101 and Kubansky 500, Kubansky 101 + Kubansky 500 (50 + 50% of the full seeding rate), Kubansky 101 + Kubansky 500 (25 + 75%) and Kubansky 101 + Kubansky 500 (75 + 25%). The authors carried out a biological yield survey on 10 September. This recording showed that the ultra-early-ripening hybrid Kubansky 101 CB was in the phase of milk-wax maturity of the grain, and the late-ripening Kubansky 500 CB was in the phase of cob formation. In single-species crops, the yields were naturally higher. The late-maturing hybrid yielded 82.0 t/ha, 38.1 t/ha higher than the ultra-maturing hybrid. However, the dry matter yield of the second hybrid was 15.9 % higher, and the cob yield was 29 % higher. The dry matter concentration of the hybrid Kubansky 500 was only 18.8 %. The hybrid Kubansky 101 CB had a dry matter concentration of 34.7 %. Different variations with the ratio of hybrids of different ripeness groups in the sowing showed that in green matter yield, the variants where the proportion of late-ripening hybrid is higher are superior. Thus, the presence of 75% hybrid Kubansky 500 CB allowed obtaining the highest yield of 77.2 t/ha. This yield is almost two times higher than the yield of the single-variety ultra-ripening hybrid (43.9 t/ha). However, the dry matter concentration here was 20.2 %. According to the biochemical analysis of the silage batches harvested, all the forages were benign. No oily acid was detected, and lactic acid predominated over acetic acid. Hay prepared from hybrid Kubansky 101 SV was 33.8% in dry matter content, which compares favourably with silage prepared from hybrid Kubansky 500 SV and mixtures with Kubansky 101 SV. The hybrid Kubansky 500 SV and mixtures with Kubansky 101 SV accounted for 21 % dry matter content. In silage prepared from hybrid Kubansky 101 SV, the percentage of dry matter is 24.2-25 %.

Sign in / Sign up

Export Citation Format

Share Document