scholarly journals Performans Induk Sapi Silangan Simmental – Peranakan Ongole dan Induk Sapi Peranakan Ongole dengan Pakan Hijauan dan Konsentrat (Performance of Simmental – Ongole Crossbred Cow and Ongole Crossbred Cow Fed with Forage and Concentrate Feed)

2012 ◽  
Vol 34 (2) ◽  
pp. 86
Author(s):  
Eny Endrawati ◽  
Endang Baliarti ◽  
Subur Priyono Sasmito Budi
Keyword(s):  
Body Weight ◽  
Organic Matter ◽  
Crude Protein ◽  
Dry Matter ◽  
Body Condition Score ◽  
Companion Animals ◽  
Protein Digestibility ◽  
Initial Body Weight ◽  
Feed Digestibility ◽  
Crossbred Cow

<p>The purposed of the study was to identify performances of Simmental – Ongole Crossbred (SIMPO) cow and Ongole Crossbred (PO) cow fed with forage and concentrate feed. This experiment was carried out at Laboratory of<br />Meat, Draught, and Companion Animals, Faculty of Animal Science, Universitas Gadjah Mada, Yogyakarta on May 16th to July 24th 2009. Six SIMPO cows with initial body weight of 352±47 kg and ten PO cows with initial body weight<br />of 295±60 kg aged 3-4 years was used in the experiments. They were fed with elephant grasses and concentrate feds (60:40/DM basis) as much as 3% of body weight (DM basis). Data collected were dry matter, organic matter, crude<br />protein and total digestible nutrients intakes, dry matter, organic matter, and crude protein digestibilities, body condition score and estrus cycles. Experimental design used was Completely Randomized Design (CRD). The data<br />optained showed that feed intake of dry matter, organic matter, crude protein, and TDN on SIMPO were higher (P&lt;0.01) than PO (13.99±2.64 kg/head/day vs 10.95±1.03 kg/head/day; 11.74±2.21 kg/head/day vs 9.17±0.87<br />kg/head/day; 1.63±0.29 kg/head/day vs 1.28±0.11 kg/head/day; 7.53±1.41 kg/head/day vs 6.17±0.60 kg/head/day respectively), whereas there were no significant differences on the nutrient intake expressed in metabolic body weight<br />(0.16±0.02 kgMBW vs 0.14±0.02 kgMBW; 0.13±0.02 kgMBW vs 0.12±0.02 kgMBW; 0.018±0.002 kgMBW vs 0.02±0.002 kgMBW; 0.09±0.01 kgMBW vs 0.08±0.01 kgMBW) respectively. There were no difference both on dry<br />matter, organic matter, crude protein digestibility (70.83±3.26% vs 65.36±2.19%; 72.38±3.08% vs 67.10±2.15%; 79.48±2.29% vs 75.79±2.17%), and so were in the case of BCS, and estrus cycles in SIMPO and PO cow. It is concluded that based on the metabolic body weight and feed digestibility, between SIMPO and PO cows were similar.</p><p><br />(Key words: Performance, Cow, Simmental – Ongole Crossbred cow, Ongole Crossbred cow, Forage, Concentrate)<br /><br /></p>

scholarly journals Intake and digestibility of crossbred goats finished on caatinga grassland receiving feed supplementation during dry season

2016 ◽  
Vol 17 (3) ◽  
pp. 484-496 ◽  
Author(s):  
Daniel Cézar da SILVA ◽  
Adriana GUIM ◽  
Gladston Rafael de Arruda SANTOS ◽  
Evaristo Jorge de Oliveira SOUZA ◽  
Stela Antas URBANO ◽  
...  
Keyword(s):  
Body Weight ◽  
Organic Matter ◽  
Crude Protein ◽  
Dry Matter ◽  
Average Daily Gain ◽  
Substitution Effect ◽  
Ether Extract ◽  
Final Body Weight ◽  
Feed Supplementation ◽  
Total Carbohydrates

SUMMARY It was evaluated the effect of feed supplementation at 0.4; 0.8 and 1.2% of body weight (BW) on intake and digestibility of crossbred goats finished on caatinga, in relation to crossbred goats not supplemented (0.0% of BW). Thirty-two crossbred, Anglo-Nubian goats were used, eight months old and with body weight of 18 ± 2.5 kg, organised into randomised blocks, which were kept on 37 hectares of caatinga from 7 h to 16 h. Intake of dry matter, organic matter, crude protein, ether extract, neutral and acid detergent fibre, total carbohydrates and total digestible nutrients was influenced (P<0.05) by the levels of feed supplementation, with linear increases of 202.31; 179.42; 25.05; 11.83; 35.79; 12.27; 142.63 and 166.79 g animal-1 day-1 respectively. There was a substitution effect (P<0.05) on dry matter intake when using feed supplementation at 0.7% BW. Feed supplementation resulted in positive linear effect (P<0.05) for digestibility of dry matter, organic matter, crude protein, ether extract, total carbohydrates, total digestible-nutrient content and digestible energy, with an increase of 17.15; 16.64; 19.07; 44.74; 15.15 and 17.56% for dry matter, and 0.69 Mcal kg-1 of dry matter respectively. Final body weight, total gain and average daily gain, showed a linear increase (P<.005) of 2.60, 3.09 and 0.036 kg per percentage point of each additional level of supplement. Feed supplementation increases the intake and digestibility of total dry matter and nutrients, a fact that makes greater performance possible, and recommends use up to a level of 0.7% BW to avoid any substitution effect.

scholarly journals EFFECT OF KATUK LEAVES MEAL (Sauropus Androgynus L. Merr) AND ZN BIOCOMPLEX SUPPLEMENTATION ON CONSUMPTION AND DIGESTIBILITY OF POSTWEANING MALE OF ETTAWA CROSSBRED

2021 ◽  
Vol 3 (1) ◽  
pp. 1-9
Author(s):  
Yakob Robert Noach ◽  
Marthen Yunus
Keyword(s):  
Body Weight ◽  
Organic Matter ◽  
Dry Matter ◽  
Complex Variables ◽  
Variance Analysis ◽  
Initial Body Weight ◽  
Leaf Meal ◽  
Randomized Design ◽  
Organic Matter Digestibility

The experiment goal was to determine the supplementation effect of katuk leaves meal and Zn bio complex on dry and organic matter consumption and digestibility of postweaning male of Ettawa Crossbred. The experiment used sixteen heads of the postweaning male of Ettawa Crossbred aged 4-5 months with an initial body weight of 9.01±1.85kg (CV 20.55%). Completely Block Randomized Design (CBRD) with 4 treatments and 4 replications were applied in this experiment. Those treatments were P0: Lamtoro + concentrate without katuk leaves meal and Zn biocomplex (control); P1: P0 + 5% katuk leaves meal (on the basis of forage dry matter)  and Zn bio complex; P2: P0 + 10% katuk leaves meal (on the basis of forrage dry matter) and Zn bio complex; P3: P0 + 15% katuk leaves meal (on the basis of forage dry matter) and Zn bio complex. Variables measured were dry matter (DM) consumption, organic matter (OM) consumption, DM digestibility, and OM digestibility. Average of DM  consumption were P0 (326.68 ±44.13g/h/d), P1 (351.68±63.47g/h/d), P2 (351.78±33.41g/h/d) and P3 (346.24±32.48g/h/d). Average of OM consumption were, P0 (300.38 ±41.14g/h/d), P1 (316.11±57.05g/h/d), P2 (315.54±30.83g/h/d) and P3 (309.21±29.00g/h/d). Average of DM digestibility, P0 (78.94 ±4.67%), P1 (78.77±9.54%), P2 (64.82±11.45%), P3 (75.38±14.56%). Average of OM digestibility, P0 (81.17±4.01%), P1 (80.77±8.69%), P2 (68.79±9.90%), and P3 (76.93±12.77%). The result of variance analysis showed that treatment has a significant effect (P<0.05) on dry and organic matter consumption but no significant (P>0.05) on dry and organic matter digestibility It can be concluded that supplementation of of katuk leaf meal (Sauropus androgynus L. Merr) at 5% up to 15% and Zn bio complex might increase dry and organic matter consumption of postweaning male of Ettawa crossbred.

scholarly journals Effects of concentrate mixture level on nutrient digestibility, growth, production and reproduction performance of Jamunapari goat under semi intensive condition

2021 ◽  
Vol 8 (2) ◽  
pp. 223-230
Author(s):  
Nusrat Zahan Shoshe ◽  
Md Abdullah Al Mahmud ◽  
Piash Kumer Ghosh
Keyword(s):  
Body Weight ◽  
Crude Protein ◽  
Dry Matter ◽  
Live Weight ◽  
Nutrient Digestibility ◽  
Feed Digestibility ◽  
Randomized Design ◽  
Reproduction Performance ◽  
Concentrate Mixture ◽  
Growth Production

Twenty female Jamunapari goats of live weight of 10.5 ± 1.2 kg at 08± 0.56 months of age were used for 240 days feeding trial. Goats were assigned to four dietary treatments in a completely randomized design with five (05) goats in each group. All animals were supplied ad libitum green grass and water. They were supplied 150, 200, 250, 300 gm concentrate mixture per day with roughage for group T1, T2, T3, and T4 respectively. Total dry matter (TDM) intake (413.2, 456.67, 489.2 and 495.7g/day) in groups T1, T2, T3, and T4, respectively, was significantly (p≤0.01) influenced by the level of concentrate in the diet. Average total digestible crude protein (DCP) intake (3.1, 3.5, 3.9, 4.0 g/kg body weight and average total digestible nutrient (TDN) intake 21.1, 22.3, 24.7, 25.1 g/kg body weight was significantly (p≤0.01) higher in group T4 and lower in group T1. The nutrient intake and digestibility were also significantly higher (p≤0.01) in T4 group. The percent digestibility of dry matter (DM), organic matter (OM), crude protein (CP), crude fiber (CF), ether extract (EE) and nitrogen free extract (NFE) were 70.1, 75.99, 73.50, 67.24, 62.13 and 49.60%, 73.14, 76.97,76.84, 68.32, 64.04 and 53.25%, 75.45,78.44,78.67,70.43,68.43 and 59.77%, 79.56, 80.16,81.69,72.45,70.82 and 63.09% in T1, T2, T3 and T4 group, respectively. Reproductive performances, birth weight of kids and litter size did not differ significantly between groups, but had significant effect on feed digestibility and milk production. Daily 300 gm concentrate mixture along with roughage is necessary for better growth, production and reproduction performance of Jamunapari doe in semi-intensive system. Res. Agric., Livest. Fish.8(2): 223-230, August 2021

scholarly journals Digestive parameters during gestation of Holstein heifers

2020 ◽  
Author(s):  
Jéssica Marcela Vieira Pereira ◽  
Marcos Inácio Marcondes ◽  
Sebastião de Campos Valadares Filho ◽  
Joel Caton ◽  
Anna Luiza Lacerda Sguizzato ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Body Weight ◽  
Organic Matter ◽  
Crude Protein ◽  
Dry Matter ◽  
Average Daily Gain ◽  
Repeated Measurements ◽  
Neutral Detergent Fiber ◽  
Dry Matter Intake ◽  
Esterified Fatty Acids

AbstractOur objective was to estimate nutrient intake, ruminal flow, total apparent and ruminal digestibility, rates of passage and digestion, ruminal and omasal pH, blood metabolite concentrations, and body measurements during gestation of Holstein heifers. Eleven pregnant Holstein heifers, 8 of which fitted with a rumen cannula (450 ± 27.6 kg of body weight and 20 ± 3.5 months of initial age) were used. All heifers received the same diet composed of corn silage, soybean meal, corn meal, minerals and vitamins, with a corn silage:concentrate ratio of 50:50 (on a dry matter basis), aiming an average daily gain of approximately 1.0 kg. The sampling periods were established according to the days of gestation: 145, 200, and 255 with a duration of 10 days per period. Total fecal samples were collected to estimate dry matter, organic matter, crude protein, and neutral detergent fiber digestibility. Blood samples were collected to analyze metabolites (non-esterified fatty acids, β-hydroxybutyrate, urea, and glucose). Data were analyzed as a repeated measurements scheme, using MIXED procedure, with differences declared when P < 0.05. Dry matter intake expressed in kg/day increased from d-145 to d-200, and remaining stable until d-255 of gestation. The same results were observed for organic matter and crude protein intake, increasing 15.0 and 35.8% respectively. In contrast, when dry matter intake was evaluated as % body weight, we observed a decrease of 16.7% from d-200 to d-255. Days of gestation did not influence ruminal flow of dry matter, organic matter, crude protein, and neutral detergent fiber. We observed an increase in the ruminal digestibility of neutral detergent fiber by 20.5%. The apparent total-tract digestibility of dry matter, organic matter, and crude protein changed over days of gestation, with an increase of 11.9, 8.5, and 9.8%, respectively, when comparing d-145 with d-200. The rate of digestion of neutral detergent fiber increased from 2.0 to 3.5% h-1. Glucose levels decreased, while β-hydroxybutirate and non-esterified fatty acids increased from d-145 to d-255. In conclusion, our results demonstrate a reduction in dry matter intake in % body weight due to pregnancy. It also shows an increase in total apparent digestibility through gestation, which imply a greater efficiency of use of nutrients by pregnant animals. Thus, further research is still needed to consolidate such results and to elucidate the mechanism about nutrient usage during the final third of gestation in heifers.

scholarly journals COMPARATIVE STUDY ON THE USE OF FOUR PROTEIN SUPPLEMENTS BY WEST AFRICAN DWARF (WAD) SHEEP.

2021 ◽  
Vol 22 (1) ◽  
pp. 68-75
Author(s):  
A. A. TAIWO ◽  
E. A. ADEBOWALE ◽  
A. O. AKINSOYINU ◽  
J. F. D. GREENHALGH
Keyword(s):  
Organic Matter ◽  
Crude Protein ◽  
Dry Matter ◽  
Poultry Manure ◽  
Basal Diet ◽  
Protein Digestibility ◽  
The Other ◽  
Pennisetum Purpureum ◽  
Protein Supplements ◽  
Acid Detergent Fibre

Feedblocks, poultry manure diet, gliricidia: leucaena mixture (1:1 W/W) and maize offal diet were compared as sources of protein supplements for WAD sheep fed a basal diet of elephant grass hay (Pennisetum purpureum), through a 12-week performance and digestibility study. Dry matter and organic matter intakes (DMI, OMI) of the sheep were higher (P0.05) on the gliricidia: leucaena supplement than on the other diets. DMI on poultry manure and maize offal diets were not significant (P0.05). Organic matter intake (OMI) of the animals followed the same trend as DMI. Sheep fed legume supplements excelled in intakes of crude protein (CP), acid detergent fibre (ADF) and digestibilities of dry matter (DM), organic matter (OM) and neutral detergent fibre (NDF) (P>0.05). Intakes of CP and ADF by sheep on the other supplements were not significantly different (P>0.05). Sheep fed on feedblock supplement consumed the least amount. (P0.05) of NDF. Variations were observed in DM,OM, and NDF digestibilities by sheep on maize offal, poultry manure and legumes supplements. Crude protein digestibility in the legumes and feedblocks supplements was higher (P0.05) than with the other two supplements. All the sheep used gained weights but those on maize offa' diet recorded higher (P0.05). weight gain (86.57g) than those on browse leaves (59.40g), feedblocks (47.80g) and poultry manure (40.44g). Rumen pH was lower (P<0.05) on the gliricidia: leucaena supplement than on other diets. Total VFA recorded for sheep on maize offal diet and legumes supplements was higher (P<0.05) than for the other two supplements. Blood urea nitrogen of the supplements were not significantly different (P>0.05) 

scholarly journals EVALUASI KECERNAAN BAHAN KERING, BAHAN ORGANIK, DAN PROTEIN KASAR TONGKOL JAGUNG FERMENTASI DENGAN PENAMBAHAN SUMBER KARBOHIDRAT YANG BERBEDA SECARA IN - VITRO

2020 ◽  
Vol 17 (1) ◽  
pp. 45
Author(s):  
Tri Astuti
Keyword(s):  
Organic Matter ◽  
Rice Bran ◽  
Crude Protein ◽  
Dry Matter ◽  
Protein Digestibility ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Tapioca Flour ◽  
Different Sources

This research aimed to study effect of Corn cob fermentation using Panerochaeta chrysosporium with adding the different sources of carbohydrat on the digestibility of dry matter, organic matter, and crude protein by in-vitro methode. A Completely Randomized Design  with 4 treatments and  4 replications. The treatments  were : P0 = fermented corncobs + without carbohydrt, P1 = fermented corncobs + 10% rice bran; P2 = fermented corncobs + tapioca flour 10%; P3 = corncob fermented + molasses 10%. The results of this study shown a very significant affected  (P <0.01) on the digestible of dry matter and organic matter but no affected (P> 0.05) on crude protein digestibility. The best results  digestibility of dry matter (66.98%) on the  P3 treatment adding  molasses, and  the highest digestibility of organic matter (67.49%) on the P3 treatment too, but the highest digestibility of  crude protein (51.37%)  in P1 treatment (adding by rice bran)

scholarly journals Kecernaan Ransum yang Mengandung Limbah Roti pada Domba

2020 ◽  
Vol 7 (1) ◽  
pp. 47
Author(s):  
Shiyami Asri Yamashita ◽  
Rani Darliani Rachmat ◽  
Ana Rochana Tarmidi ◽  
Budi Ayuningsih ◽  
Iman Hernaman
Keyword(s):  
Body Weight ◽  
Organic Matter ◽  
Crude Protein ◽  
Dry Matter ◽  
Average Value ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
The Impact

ABSTRAKLimbah roti memiliki potensi sebagai pakan untuk domba, namun belum banyak diketahui dampaknya terhadap kecernaan. Penelitian bertujuan untuk menguji ransum yang mengandung limbah roti terhadap kecernaan pada domba. Dua puluh ekor domba lokal dengan bobot hidup 34,65±2,87 kg dialokasikan ke dalam 5 ransum perlakuan yang mengandung limbah roti sebanyak 0, 6, 12,18, dan 24%. Penelitian dilaksanakan secara eksmperimental dengan menggunakan rancangan acak lengkap. Data yang terkumpul dianalisis dengan sidik ragam. Hasil menunjukan bahwa penggunaan limbah roti sampai 24% dalam ransum tidak berpengaruh terhadap kecernaan protein kasar, lemak kasar, bahan kering dan bahan organik dengan nilai rataan berturut-turut 54,91%, 73,39%, 66,80% dan 69,86%. Kesimpulan, limbah roti dapat digunakan dalam ransum sampai 24% dan tidak menganggu kecernaan pada domba.Kata kunci: domba, kecernaan, limbah, ransum, rotiABSTRACTBread waste has potential as a feed for sheep, but not yet known the impact on digestibility. The research aims to test the ration containing bread waste on digestibility in sheep. Twenty local sheep with a body weight of 34.65 ± 2.87 kg were allocated into 5 treatment rations containing bread waste of 0, 6, 12.18, and 24%. The study was conducted experimentally using a completely randomized design. The data collected was analyzed by variance. The results showed that the use of bread waste up to 24% in the ration did not affect the digestibility of crude protein, crude fat, dry matter and organic matter with an average value of 54.91%, 73.39%, 66.80% and 69.86%. Conclusion, bread waste can be used in rations up to 24% and does not interfere with digestibility in sheep.Keywords: sheep, digestibility, waste, ration, bread

scholarly journals Apparent ileal dry matter and crude protein digestibility of rations fed to pigs and determined with the use of chromic oxide (Cr2O3) and acid-insoluble ash as digestive markers

1996 ◽  
Vol 76 (4) ◽  
pp. 551-562 ◽  
Author(s):  
P. Van Leeuwen ◽  
A. Veldman ◽  
S. Boisen ◽  
K. Deuring ◽  
G. J. M. Van Kempen ◽  
...  
Keyword(s):  
Body Weight ◽  
Crude Protein ◽  
Dry Matter ◽  
Wheat Gluten ◽  
Live Weight ◽  
Protein Digestibility ◽  
Chromic Oxide ◽  
Protein Sources ◽  
Soyabean Meal ◽  
Hourly Basis

Two experiments were conducted to determine apparent ileal DM and crude-protein (CP) digesibilities in rations fed to pigs. An evaluation was made of Cr2O3 and HCl-insoluble ash as digestive markers. In addition, the effects of body weight (BW) on apparent ileal DM and CP (N x 6.25) digestibilities were studied. In Expt 1, thirteen barrows averaging 35 kg BW were fitted with post-valve T-caecum (PVTC) cannulas to determine the apparent ileal DM and CP digestibilities of a wheat gluten-bran ration (B2) and a soyabean-meal ration (E1). Immediately after morning feeding ileal digesta samples were collected on an hourly basis for a total of 12 h. Subsequently, N and marker contents were determined in the samples. The postprandial patterns of N and Cr passage were more similar than those of N and HCl-insoluble ash. Therefore Cr2O3 is more suitable as a marker than HCl-insolube ash. The apparent ileal CP digestibility coefficient of ration B2 derived using Cr2O3 as a marker was significantly (P > 0.05) higher by 0.018 compared with the value obtained using HCl-insoluble ash. The corresponding values for ration E2 obtained using Cr2O3 and HCl-insoluble ash were both 0.825. In Expt 2, apparent ileal DM and CP digestibilities were determined in eighteen rations using twelve barrows also fitted with PVTC cannulas (BW from 40 to 100 kg). The protein sources for these rations were from different groups of feedstuffs. In four and three of the rations apparent ileal DM and CP digestibilities respectively were significantly different (P < 0.05) when assessed using the two markers. The digestibility coefficients were not systematically higher or lower for either marker. Absolute differences were < 0.049 on average. Significant effects of live weight on apparent ileal CP digestibilities were found.

Effect of ensilation of lucerne on voluntary intake, digestibility, and eating and rumination behaviour in sheep

1992 ◽  
Vol 32 (3) ◽  
pp. 315 ◽  
Author(s):  
MO Etheridge ◽  
CR Stockdale ◽  
PD Cranwell
Keyword(s):  
Organic Matter ◽  
Physical Function ◽  
Crude Protein ◽  
Dry Matter ◽  
Protein Digestibility ◽  
Chemical Characteristics ◽  
Chemical Compositions ◽  
Feeding Value ◽  
Voluntary Intake ◽  
Chewing Behaviour

Twelve wether sheep were used in a 2 x 2 factorial experiment in which voluntary intake, diet digestibility, and eating and ruminating behaviour were compared when sheep were offered lucerne (Medicago sativa) as either wilted silage or hay. Chemical characteristics suggested that the lucerne silage was well fermented, and chemical compositions of the silage and hay were similar. Voluntary intakes were not significantly (P<0.05) different and were 1201 and 1220 g/day for silage and hay, respectively. Digestibilities of dry matter and organic matter were similar for both feeds, as were chewing behaviour and rumen physical function. Apparent crude protein digestibility was significantly (P<0.05) higher for silage than for hay (73.8 v. 70.3%). It was concluded that well-preserved lucerne silage has at least as high a feeding value as well-made lucerne hay.

Factors limiting the intake of feed by the sheep. VI. Feed intake in the ruminant lamb in relation to the administration of a nutrient solution per abomasum

1971 ◽  
Vol 22 (3) ◽  
pp. 469 ◽  
Author(s):  
RH Weston
Keyword(s):  
Body Weight ◽  
Organic Matter ◽  
Nutrient Solution ◽  
Crude Protein ◽  
Dry Matter ◽  
Control Period ◽  
Body Height ◽  
Basal Diet ◽  
Feed Consumption ◽  
Gross Energy

The voluntary consumption by lambs of a ground and pelleted diet containing 24.4% crude protein on a dry matter basis was studied over 25 days when a nutrient solution based on evaporated cows' milk and lactose was administered per abomasum. The lambs, initially 11-12 weeks old and weighing 26 kg, had been surgically prepared with permanent abomasal fistulae. Separate digestion experiments were conducted to determine (i) the digestible energy (DE) content of the basal diet and (ii) patterns of digestion of the basal diet in the stomach and intestines. The basal diet had a DE content of 3.39 kcal/g dry matter and provided 22 g crude protein digested in the intestines per 100 g digestible organic matter; the nutrient solution contained 7.2 g nitrogen/Mcal gross energy and the energy was 94% digestible. In the digestion experiments, the rates of flow of digesta from the rumen and abomasum were 9.9 and 14.4 l/day respectively; the ruminal digesta was at pH 5.7 and the concentration of volatile fatty acids was 138 mmoles/litre. Approximately 59% of the apparent digestion of organic matter and 78% of the digestion of acid detergent fibre occurred in the stomach. The supplemented and unsupplemented groups of lambs consumed similar amounts of feed in a control period; the daily intakes expressed in relation to body weight in kg0.75 (BWkg0.75) were 101 g dry matter and 341 kcal DE. When nutrient solution providing 836 kcal gross energy or 58 kcal DE/BWkg0.75 per day was administered per abomasum, voluntary feed consumption declined by 16 g dry matter/BWkg0.75 or 53 kcal DE/BWkg0.75. Thus on the basis of DE, the decline in dietary intake compensated for the nutrient solution administration to the extent of 91 %. The daily DE intake of the supplemented group during nutrient administration was 345 kcal/BWkg0.75 and the rate of body height increase was 306 g/day ; the corresponding values for the unsupplemented group were 340 kcal DE/BWkg0.75 and 290 g/day. The data indicated that caloric homeostasis was well developed in lambs of this maturity and that the diet probably contained sufficient essential nutrients to permit the lambs to exhibit maximum growth. The capacity of the lamb to consume feed and increase in body weight did not appear to be restricted by any feature of ruminal digestion.

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