The development of the digestive system of the young; animal. VII. The total and partial apparent digestibility of a pelletted diet by lambs and adult sheep

1. Fifteen male Merino lambs suckling the ewe and four adult Merino wethers were fed the same pelletted diet. The lambs had free access to milk from the ewe and were creep-fed the pelletted diet. Feed intake by each lamb was measured daily.2. The digestibility of the dry matter of the pelletted diet was determined in a conventional total collection trial with the adult wethers. Dry-matter and crude-protein digestibility "was determined in the lambs on faeces taken at, or just before, slaughter by the lignin-ratio method.

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Voluntary Intake and Apparent Digestibility of Artificially Dried Stargrass Fed to Holstein Bull Calves

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v61i4.10405 ◽

1969 ◽

Vol 61 (4) ◽

pp. 429-437

Author(s):

J. A. Yazman ◽

J. A. Arroyo-Aguilú ◽

R. E. McDowell ◽

P. J. Van Soest ◽

H. Cestero

Keyword(s):

Crude Protein ◽

Dry Matter ◽

Nutritive Value ◽

Chemical Constituents ◽

Protein Digestibility ◽

Neutral Detergent Fiber ◽

Apparent Digestibility ◽

Holstein Bull ◽

Bull Calves ◽

Voluntary Intake

Voluntary intake and apparent digestibility of an artificially dried tropical grass, Cynodon nlemfuensis variety nlemfuensis. was evaluated utilizing Holstein bull calves. Two regrowth ages of grass hays, 30 and 45 days, were fed to two groups of four calves each: 16 and 24 weeks old. The grass hays were analyzed for dry matter and crude protein and for fiber fractions according to Goering and Van Soest. There were no significant differences between means for voluntary intake (g/kg body weight (BW)/day) of the chemical constituents for the four calf-hay groups. However, the trend was for higher intake by the 24-week old calves fed the 30-day hay than by the other three groups. Among the 16- week old calves, there was a higher voluntary intake by those consuming the 45-day hay despite the slightly higher nutritive value of the 30-day hay. When the data were pooled across calf ages, voluntary intake of 30-day hays was greater than for the 45-day ones, although only differences in crude protein intake were significant (P < .05). Pooled across hay ages, voluntary intake by the 24-week old calves was significantly greater (P < .05) than by the 16-week old calves for dry matter and neutral-detergent fiber only, indicating that hay intake was related to reticulo-ruminal capacity. Differences in apparent digestibility were significant (P < .05) only for crude protein with the 24-week old calves fed the 30-day hay, having a greater coefficient of digestibility than the 16- and 24-week old calves fed the 45-day hay. Crude protein digestibility of the 30-day hays (pooled across calf ages) was significantly greater (P < .05) than that of the 45-day hays. Although not significant for all constituents, the values were higher for the 30-day hay than for the 45-day hay (pooled across calf ages) and for the 24- week old calves than for the 16-week old calves (pooled across hay ages).

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RUMEN FERMENTATION AND DIGESTIBILITY IN STEERS AS INFLUENCED BY LEVEL OF INTAKE AND MONENSIN

Canadian Journal of Animal Science ◽

10.4141/cjas83-100 ◽

1983 ◽

Vol 63 (4) ◽

pp. 855-860

Author(s):

G. M. J. HORTON ◽

M. J. FARMER ◽

K. A. BASSENDOWSKI ◽

G. M. STEACY

Keyword(s):

Feed Intake ◽

Crude Protein ◽

Dry Matter ◽

Rumen Fluid ◽

Control Diet ◽

Protein Digestibility ◽

Rumen Fermentation ◽

Feed Consumption ◽

Plasma Urea ◽

Four Levels

The effects of level of feed intake and monensin on rumen fermentation and digestibility in steers were evaluated. The four levels of feed intake were 30, 50, 70 and 90 g of dry matter per kilogram body weight raised to the 0.75 power (g/kg0.75). Monensin was included at 0 and 33 mg/kg diet. The diet contained 60% rolled barley and 36.5% alfalfa pellets. Organic matter digestibility decreased (P < 0.05) with increasing levels of intake when the control diet was fed but was not affected by intake when monensin was included in the feed. Crude protein digestibility was consistently higher (P < 0.05) in monensin than control-fed steers at all four intake levels and decreased with increasing feed consumption in steers fed both control and monensin diets. Rumen fluid pH and ammonia and plasma urea nitrogen were not affected by monensin, and decreased (P < 0.05) as feed intake increased. Both higher feed intake and monensin caused an increase in the molar proportion of ruminal propionic acid and a decrease in the proportion of acetic acid. Key words: Intake monensin, digestibility, PUN, VFA, cattle

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Seasonal production of Andropogen Gayanus: II. Seasonal changes in digestibility and feed intake

The Journal of Agricultural Science ◽

10.1017/s0021859600024989 ◽

1970 ◽

Vol 75 (3) ◽

pp. 369-373 ◽

Cited By ~ 11

Author(s):

R. J. Haggar ◽

M. B. Ahmed

Keyword(s):

Feed Intake ◽

Seasonal Changes ◽

Crude Protein ◽

Dry Matter ◽

Nutritive Value ◽

Protein Digestibility ◽

Dry Matter Digestibility ◽

Voluntary Feed Intake ◽

Andropogon Gayanus ◽

Voluntary Intake

SUMMARYTwenty-seven sheep feeding trials were carried out on freshly cut Andropogon gayanus, fed daily during three wet seasons, 1966–8.In each year, dry-matter voluntary intake and digestibility were highest during the first part of the growing season and declined with advancing maturity of the herbage. However, at the time of ear emergence in early October, there were small increases in voluntary intake of dry-matter and crude protein digestibility, although further decreases followed after mid-October.Determinations of in vitro digestibility indicated that elongating stems during early October were at least as digestible as leaves.Seasonal changes in crude protein digestibility were much greater than changes in dry-matter digestibility; seasonal changes in feed intake were intermediate. Voluntary feed intake was related to dry-matter digestibility.Voluntary feed intake and digestible crude protein were both closely related to the crude protein content of the forage. It was concluded that crude protein is a useful criterion for predicting nutritive value.

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Introducing Mediterranean Lupins in Lambs’ Diets: Effects on Growth and Digestibility

Animals ◽

10.3390/ani11040942 ◽

2021 ◽

Vol 11 (4) ◽

pp. 942

Author(s):

Mariana Almeida ◽

Sofia Garcia-Santos ◽

Ana Nunes ◽

Sara Rito ◽

Jorge Azevedo ◽

...

Keyword(s):

Organic Matter ◽

Protein Intake ◽

Crude Protein ◽

Dry Matter ◽

Lupinus Albus ◽

Mediterranean Area ◽

Lupinus Luteus ◽

Optimum Level ◽

Apparent Digestibility ◽

Livestock Feeding

Lupins are suitable candidates to replace soybean meal in livestock feeding in the Mediterranean area, presenting a solution for the European Union’s dependence on soybean importations. This study aimed to assess the effect of incorporating Lupinus albus and Lupinus luteus into Churra da Terra Quente lambs’ diets on growth performance and digestibility. Two trials were conducted over two years. In trial 1, two experimental diets containing 50 g/kg Lupinus albus and 50 g/kg Lupinus luteus were tested. In trial 2, lambs were fed with diets containing higher incorporations of Lupinus luteus (100, 150, and 200 g/kg: LL10, LL15, and LL20, respectively). Total dry matter, hay dry matter, and crude protein intake were calculated, as well as average daily gains. At the end of the growth trials, dry matter, organic matter, and NDF digestibility was determined. Incorporating 50 g/kg of lupins did not affect (p > 0.05) the performance. Lambs fed on LL20 diets presented the lowest HDMI and CPI values (p < 0.05). The highest intakes (p < 0.05) were observed from LL15 lambs. No differences were found in apparent digestibility coefficients between diets (p > 0.05), except for NDF digestibility which was highest (p < 0.05) for LL20. The optimum level of lupin inclusion in lambs’ diets seems to be 150 g/kg.

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DIGESTIBILITY OF RYE AND ITS VALUE IN PELLETED RATIONS FOR PIGS

Canadian Journal of Animal Science ◽

10.4141/cjas69-049 ◽

1969 ◽

Vol 49 (3) ◽

pp. 375-381 ◽

Cited By ~ 9

Author(s):

D. W. Friend ◽

T. M. MacIntyre

Keyword(s):

Growth Rate ◽

Crude Protein ◽

Dry Matter ◽

Protein Digestibility ◽

Indirect Measurement ◽

Factorial Experiment ◽

N Retention ◽

Weight Gains ◽

Feeding Value ◽

Daily Gain

Digestibility and N-retention were determined with eight barrows fed rye and barley in a crossover experiment. Dry matter and crude protein digestibility coefficients for rye were higher than those for barley, but differences in N-retention were negligible. The coefficients obtained by indirect measurement were higher than those determined directly. Seventy-two pigs were used in a factorial experiment to determine the effect on production of feeding two grades of rye at 0, 30 and 60% of pelleted and non-pelleted finisher rations. Weight gains by barrows compared with gilts were affected less by the addition of rye to the rations. The growth rate of gilts was reduced by the inclusion of 30% rye in non-pelleted but not in pelleted rations. The use of No. 2 grade rye appeared to have restricted rate of gain less than did No. 3 grade rye. The feeding value of rye was improved by pelleting, since the daily gain of 0.75 kg obtained by feeding a 30% rye, pelleted ration equalled that from pigs fed a 0% rye, non-pelleted ration.

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Nutrient absorption in lambs fed diets containing different amounts of phosphorus

Revista Mvz Córdoba ◽

10.21897/rmvz.166 ◽

2013 ◽

pp. 3444-3451

Author(s):

René Patiño P ◽

Tanimara Soares da Silva ◽

José C. Da Silva Filho ◽

Mohamed Emad Nasser ◽

Dorinha Smith Vitti ◽

...

Keyword(s):

Organic Matter ◽

Crude Protein ◽

Dry Matter ◽

Nutrient Digestibility ◽

Mineral Matter ◽

Average Weight ◽

Apparent Digestibility ◽

Absorption Coefficients ◽

Collection Method ◽

Reliable Parameter

ABSTRACTObjective. Evaluate the effect of increasing P intake on nutrient digestibility, and compare the true and apparent absorption coefficients of P and Ca in lambs. Materials and methods. Twenty-four Santa Ines sheep, with an average weight of 33.6 ± 1.6 kg, were distributed into four treatments (0, 2, 4 and 6 g/day of supplementary P) with forage: concentrate ratio of 70:30. The study of apparent nutrient digestibility was conducted during the first week, using the total feces collection method. During the second week, after injection of 7.4 MBq of 32P and 7.7 MBq of 45Ca, apparent (AAC) and true (TAC) absorption coefficients of P and Ca were determined. The lambs were kept in metabolic cages. Results. The increase in P intake did not affect (p>0.05) dry matter, crude protein, NDF or ADF digestibility, but the TAC of P and Ca and mineral matter digestibility decreased. The AAC was not affected (p=0.10). A cubic relationship was observed between P intake and TAC (TAC=2.16–1.95X+0.55X2-0.04X3; R2=0.38) and linear relationship with the TAC of Ca (TAC=0.559–0.03X; R2=0.26). TAC and AAC values were different (p<0.001). Conclusions. The increase in P intake doesn’t impact organic matter digestibility, but does affect P and Ca absorption. Apparent digestibility is not a reliable parameter to determine the efficiency of P and Ca absorption.

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The influence of the method of preservation of forages on the digestion in dairy cows. 1. Composition of the forages and digestibility of dry matter, organic matter and nitrogen.

Netherlands Journal of Agricultural Science ◽

10.18174/njas.v23i1.17196 ◽

1975 ◽

Vol 23 (1) ◽

pp. 3-9

Author(s):

S. Tamminga ◽

C.J. van der Koelen

Keyword(s):

Organic Matter ◽

Formic Acid ◽

Dairy Cows ◽

Crude Protein ◽

Dry Matter ◽

Mixed Diet ◽

Apparent Digestibility

1. Grass from the same sward was ensiled without additive, with 14.6 g formic acid/100 g crude protein or 10.8 g formic acid and 10.6 g formaldehyde/100 g crude protein. Similar grass was dried and pelleted. Drying or ensiling with the mixture reduced solubility of N in the preserved grass but formic acid increased it, and ensiling without additive increased it even more. Apparent digestibility of N in the rumen of cows tended to decrease with decrease in solubility. Digestibility in vitro of the mixed diet given to the cows, calculated from digestibility of the separate components, agreed well with the values in vivo for diets with silages, but was high for that with dried grass. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Pengaruh Pemberian Ransum dengan Kualitas Berbeda Terhadap Profil Darah, Produksi Susu dan Pertambahan Bobot Badan Sapi Perah

Sains Peternakan ◽

10.20961/sainspet.v6i1.4940 ◽

2017 ◽

Vol 6 (1) ◽

pp. 26 ◽

Cited By ~ 1

Author(s):

Aqni Hanifa

Keyword(s):

Dairy Cows ◽

Milk Yield ◽

Feed Intake ◽

Protein Intake ◽

Crude Protein ◽

Dry Matter ◽

Dietary Quality ◽

Blood Profile ◽

Hb Concentration

<div class="Section1">An experiment was conducted to study blood profile, milk yield and liveweight gain of dairy cows as affected by dietary different quality of diets. The experiment used 15 lactating PFH were assigned into three treatments of diets and</div> five replication, three treatments of diets were : 1) T1 (CP 12% dan TDN 65%); 2) T2 (CP 14% dan TDN 70%) dan 3) T3 (CP 16% dan TDN 75%).The results of this experiment showed that the average of dry matter (DM) intake on Tl, T2 and T3 treatments were 8,59; 10,03 and 10,94 kg/d, respectively (P<0,01). The average of crude protein intake (CP) on T1, T2 and T3 treatments were 1,06; 1,44 and 1,71 kg/d (P<0,01), also the average of TDN intake on T1, T2 and T3 treatments were 5,52; 6,86 and 8,02 kg/d (P<0,01). The average of Hemoglobin (Hb) concentration on T1, T2 and T3 treatments were 10,21: 11,18 and 10,44 g/dl (P>0,05), also the average of eritrosit value on TI, T2 and T3 treatments were 3,37; 3,73 and 3,48 million/mm3;, respectively (P>0,05). The average of milk yield on T1, T2 and T3 treatments were 8,12; 11,29 and 13,42 l/d (P<0,05). The average of liveweight gain on TI, T2 and T3 treatments were 81,66; 117,71 and 320,00 g/d (P>0,05). The conclusions of this research was the highest level of CP and "1'DN in diets (CP 16% and TDN 75%) showed that feed intake (DM, CP and TDN) and milk yield gave the best than other treatments. Different dietary quality of diets altered significant on feed intake (DM, CP and TDN) and milk yield, but the treatments did not affect on liveweight gain, Fib and eritrosit concentration. Key words : diets quality, feed intake, blood profile, milk yield, liveweight gain, dairy cows

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The relations between the apparent digestibility of roughages in the rumen and lower gut of sheep, the volume of fluid in the rumen and voluntary feed intake

Animal Science ◽

10.1017/s0003356100042021 ◽

1967 ◽

Vol 9 (4) ◽

pp. 463-470 ◽

Cited By ~ 24

Author(s):

M. J. Ulyatt ◽

K. L. Blaxter ◽

I. McDonald

Keyword(s):

Polyethylene Glycol ◽

Feed Intake ◽

Volume Of Fluid ◽

Ratio Method ◽

Apparent Digestibility ◽

Voluntary Feed Intake ◽

Ad Libitum ◽

Voluntary Intake ◽

Hind Gut ◽

Volumes Of Distribution

Three sheep with permanent fistulas of the rumen were each given dried grass and two hays, each in three different amounts, and the apparent digesti-bility of the roughages in the rumen and distal to the rumen was determined. A lignin ratio method was used to measure digestibility.With increase in the amount of the poorest hay given, the proportion digested in the rumen fell and that distal to the rumen increased. With the second hay this effect was also noted but was not statistically significant. The voluntary intakes ofdry matter varied from 1·94 kg/day for the dried grass to 1·28 for the poorest hay. The volumes of distribution of polyethylene glycol in the rumen when feed was offered ad libitum, however, were the same, irrespective of the type of feed, at between 14·1 and 15·2 litres. These observations were confirmed at slaughter. The results support the hypothesis that sheep voluntarily consume roughages of different qualities to achieve constant fill of their rumens, and that little regulation of voluntary intake can be attributed to distension of the hind gut.

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The Apparent Digestibility of Nutrients and Energy Value to Pigs of Plantains (Musa Sapientum Var. Paradisiaca Linn)

Nigerian Journal of Animal Production ◽

10.51791/njap.v1i2.2057 ◽

2021 ◽

Vol 1 (2) ◽

pp. 184-191

Author(s):

V. A. Oyenuga ◽

B. L. Fetuga

Keyword(s):

Crude Protein ◽

Dry Matter ◽

Nitrogen Retention ◽

Basal Diet ◽

Metabolizable Energy ◽

Apparent Digestibility ◽

Crude Fibre ◽

Large White ◽

High Dry Matter ◽

Nitrogen Free Extract

The proximate and mineral constituents of six plantain forms, raw green plantain (RGP), cooked green plantain (CGP), raw ripe plantain (RRP), cooked ripe plantain (CRP), green plantain meal (GPM) and ripe plantain meal (RPM) were determined by chemical analysis. 24 large white barrows, weighing initially, between 40-45 kg., were used to study the apparent digestibility of nutrients, digestible energy (DE), metabolizable energy (ME), metabolizable energy corrected for nitrogen retention (ME(n) and total digestible nutrients when the plantains served as the only source of nutrients. In a second experiment ME and ME(n) were measured for the plantain forms using 28 Large White barrows, with diets in which the plantains replaced 50% of maize in a basal diet. All the plantain forms had low fat, crude fibre and crude protein content but high in nitrogen-free extract, phosphorus, potassium and Iron. Identically high dry matter (D.M.) and nitrogen-free extract (N.F.E.) digestion coefficients were obtained for all the plantain forms except RPM, which had significantly lower values. Digestion coefficients for crude protein (46.9, 53.6, 51.8, 34.3,-32.7 %), crude fibre, (46.6, 49.5, 58.7, 62.6, 56.9, 39.6 %), ether extract (55.9, 56.6, 66.9, 69.2, 54.7 and 34.6 %) for RGP, CGP, RRP, CRP, GPM and RPM respectively were considerably lower than for D.M. and N.F.E. The DE, ME ME(n) and TDN values were comparable for all plantain forms except RPM, which had significantly lower values in most cases. The fresh green plantains and green plantain meals had slightly higher energy values than the ripe plantains, even though the nutrients in the ripe plantains were better digested than in the green forms. The results are discussed in relation to variations in the relative proportions of the simple and more complex carbohydrates during ripening.

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