scholarly journals The Effect of Plant Protection Products and Albite on the Productivity and Quality of Fodder Galega (Galega Orientalis)

2019 ◽  
Vol 9 (1) ◽  
pp. 3286-3292
Keyword(s):  
Growth Regulator ◽  
Dry Matter ◽  
Field Experiments ◽  
Plant Protection ◽  
Plant Protection Products ◽  
Metabolizable Energy ◽  
Green Mass ◽  
Fodder Quality ◽  
Gross Energy ◽  
Digestible Protein

The research was aimed at scientific substantiation of the possibility to reach high productivity of fodder galega due to the use of plant protection products and the Albite growth regulator, and their effect on the fodder quality. To achieve this goal, the effect of these factors on the yield of green mass and dry matter, on the collection of gross energy, metabolizable energy of feed units, and digestible protein was studied in 2012 – 2014 during the field experiments and in laboratory studies. As a result of the studies, it has been found that galega had the greatest yield of dry matter, metabolizable energy, energy feed units, and digestible protein on the nonpesticide background with plants double sprayed with Albite, and on the pesticide background — in the phase of spring aftergrowing and budding. Prevailing accumulation of crude protein and calcium in the green mass was on the nonpesticide background with double spraying with Albite; of crude fiber — on the pesticide background in the phase of spring aftergrowing; of crude ash — in the phase of seedling + budding; and of crude fat — without introducing any growth regulator. Plant protection products and Albite did not significantly increase the concentration of nitrogen-free extractives (NFE) and phosphorus. The studied factors did not affect the content of gross energy (GE), metabolizable energy (ME) and energy feed units (EFU) in 1 kg of dry matter of galega green mass, and did not increase the concentration of digestible protein in EFU.

scholarly journals Promising uncommon poaceous and leguminous fodder crops

2020 ◽  
Vol 50 (4) ◽  
pp. 32-39
Author(s):  
O. T. Andreeva ◽  
N. G. Pilipenko ◽  
L. P. Sidorova ◽  
N. Yu. Kharchenko
Keyword(s):  
Dry Matter ◽  
Nutritional Value ◽  
Field Experiments ◽  
Forest Steppe ◽  
Forage Crops ◽  
Sudan Grass ◽  
Green Mass ◽  
Gross Energy ◽  
Digestible Protein ◽  
Feed Unit

The results of research (2016-2018) into productivity, adaptability and nutritional value of poaceous crops (forage millet, Sudan grass) and legumes (fodder beans, spring vetch, garden peas) are presented and analyzed. The research was conducted on meadow chernozem mealy-carbonate soil, light loam by granulometric composition, in the forest-steppe zone of Trans-Baikal Territory. Agricultural technology used for fodder crop cultivation was common for this area. The objects of the research were legumes (Sibirskiye forage beans, Novosibirskaya spring vetch, Holik garden peas), and poaceous varieties (Bystroe forage millet, Novosibirskaya 84 Sudan grass). The experimental work was carried out in accordance with the generally accepted guidelines for field experiments. All the forage crops under study have formed a fairly high productivity: the yield of green mass was 13.0-18.2 t/ha, dry matter – 2.6-3.2, feed units – 2.2-2.7 t/ha, digestible protein – 220-567 kg/ha, gross energy – 26.5-32.2 GJ/ha, with availability of digestible protein 100-210 g per one feed unit. Among leguminous crops, spring vetch and fodder beans had an advantage with the green mass yield of 13.3-15.0 t/ha, the amount of dry matter of 3.1-3.2, feed units of 2.6-2.7 t/ha, digestible protein 494–567 kg/ha, gross energy 32.0–32.2 GJ/ha, with availability of digestible protein of 190–210 g per one feed unit. Garden peas were inferior to spring vetch and fodder beans in yield by 2.3-13.3%, dry matter – by 9.6-12.5, feed units – by 3.8-7.4, digestible protein – by 4.9-17.1, gross energy – by 8.1–8.7%. Among poaceous crops, agrocenoses of Sudan grass had an advantage in productivity and nutritional value. They formed the yield of green mass 18.2 t/ha, the amount of dry matter 3.1, feed units 2.5 t/ha, digestible protein 300 kg/ha, gross energy 31.3 GJ/ha, with availability of digestible protein of 120 g per one feed unit. Fodder millet was inferior to Sudan grass in all respects by 12.0–26.7%, respectively.

scholarly journals The estimation of productivity and quality of sainfoin forage

2020 ◽  
pp. 12-15
Author(s):  
A. Ignatiev ◽  
A. A. Regidin
Keyword(s):  
Dry Matter ◽  
Biological Traits ◽  
Standard Variety ◽  
Forage Grasses ◽  
Early Maturity ◽  
Green Mass ◽  
Gross Energy ◽  
Digestible Protein ◽  
Perennial Legume

In the arid south ofRussiasainfoin is one of the key perennial legume forage grasses. It has a number of economic and biological traits and properties, such as anything goes approach to soil cultivation, drought tolerance, early maturity, stability of green mass and seed productivity; seeds don’t need any insecticides, it is convenient for growing in field crop rotation, it is a good forecrop for winter grain crops and it is used as a green manure crop. The purpose of the current study was the estimation of productivity and forage quality of the sainfoin varieties developed in theFSBSIAgriculturalResearchCenter“Donskoy” to the results, there has been found that the sainfoin varieties of theFSBSIAgriculturalResearchCenter“Donskoy” produced stable and large yields of green mass, dry matter and seeds. Throughout the years, productivity of green mass and dry matter of the sainfoin varieties “Veles”, “Sudar” and “Shuravi” varied from 30.0 t/ha to 36.5 t/ha and 8.1 t/ha to 8.3 t/ha, which was higher than that of the standard variety “Zernogradsky2”, respectively 6.5–12.5% and 8.0–10.7%. The productivity of the seeds of these varieties was 0.72–0.77 t/ha, or 9.1–16.7% higher than that of the standard variety. The largest yields among all varieties were produced by the variety “Shuravi”. The varieties “Veles”, “Sudar” and “Shuravi” exceeded the standard variety in the yields of forage units per1 haon 8.0–10.7%, raw protein on 8.1–14.1%, and digestible protein on 9.7–12.9%. Due to the larger yields of dry matter, they produced 83 430–85 490 MJ of gross energy per1 hectare.

scholarly journals Oilseed radish in single- and multi-crop sowings with poaceous crops

2020 ◽  
Vol 50 (2) ◽  
pp. 23-31
Author(s):  
O. T. Andreeva ◽  
N. G. Pilipenko ◽  
L. P. Sidorova ◽  
N. Yu. Kharchenko
Keyword(s):  
Dry Matter ◽  
Field Experiments ◽  
High Energy ◽  
Raw Material ◽  
Laboratory Research ◽  
Forest Steppe ◽  
Dry Matter Content ◽  
Oilseed Radish ◽  
Gross Energy ◽  
Digestible Protein

The results of field and laboratory research for 2015–2017 are presented and analyzed on the cultivation of traditional and uncommon poaceous crops. Recognized varieties of barley, oats, and millet were studied in single-crop sowings and intercropped with a high-protein cabbage crop – oilseed radish. The research was conducted on meadow chernozem mealy-carbonate soil in the forest-steppe zone of Trans-Baikal Territory. Agricultural technology used for fodder crop cultivation was common for this area. The objects of the research were the following varieties: barley Anna, oats Metis, millet Bystroe, oilseed radish Tambovchanka. The experimental work was carried out in accordance with the generally accepted guidelines for field experiments. Poaceous crops and oilseed radish were assessed in terms of their adaptability to growing conditions and their economically valuable characteristics that ensure sustainable production of high-energy feed. In multi-crop agrocenoses of poaceous crops and oilseed radish, the yield increased and the quality of feed raw material improved. The best results of multi-crop sowings were achieved by oats and millet intercropped with oilseed radish. The yield of green mass was 38.8-39.7 t/ha, dry matter content – 4.88-4.90 t/ha, digestible protein – 810820 kg/ha, and gross energy – 46.3-52.2 GJ/ha with availability of digestible protein – 180-186 g per one feed unit. Multi-crop sowings of oats and millet with radish oilseed are more productive than single-crop poaceous agrocenoses in feed units by 1.5-1.7 times, digestible protein by 2.9-3.3 times, gross energy by 1.2-1.6 times, with 10.5-10.7 MJ of exchangeable energy in one kilogram of dry matter.

High-productive gramineous ecosystems in Transbaikal

2020 ◽  
Author(s):  
О. Андреева ◽  
Н. Пилипенко ◽  
Л. Сидорова ◽  
Н. Харченко
Keyword(s):  
Stress Resistance ◽  
Dry Matter ◽  
Nutritional Value ◽  
Forage Yield ◽  
Disease Symptoms ◽  
Green Mass ◽  
Gross Energy ◽  
Digestible Protein ◽  
Field Beans ◽  
Feed Unit

Исследования проведены в 2016–2018 годах на полях Научно-исследовательского института ветеринарии Восточной Сибири – филиала СФНЦА РАН, расположенных в Ингодинско-Читинской лесостепи Забайкалья. В статье представлены результаты полевых и лабораторных исследований по возделыванию мятликовых традиционных культур в одновидовых и бинарных посевах с кормовыми бобами в кормопроизводстве Забайкалья. Исследования выполнены на лугово-чернозёмной мучнисто-карбонатной почве. Дана оценка кормовым мятликовым культурам и бобам по адаптивности к условиям выращивания, показаны их хозяйственно ценные признаки. Установлена возможность повышения продуктивности и питательной ценности кормовых агроценозов путём использования кормовых бобов в бинарных посевах с мятликовыми культурами. По продуктивности и питательной ценности двухкомпонентные посевы превосходили одновидовые агроценозы мятликовых культур по зелёной массе в 2,3–2,7 раза, переваримому протеину — в 1,7–1,8 раза. В бинарных посевах наилучшие результаты обеспечили посевы ячменя и овса с кормовыми бобами, где урожайность зелёной массы составила 34,9–37,2 т/га, сухого вещества — 5,2–5,4 т/га, кормовых единиц — 4,68–4,90 т/га, переваримого протеина — 646–662 кг/га, обменной энергии — 54,6–57,2 ГДж/га, обеспеченность 1 корм. ед. переваримым протеином — 135–138 г. Бинарные посевы ячменя и овса с кормовыми бобами увеличили продуктивность в сравнении с одновидовыми посевами по сбору кормовых единиц в 1,6–1,9 раза, переваримому протеину — в 2,3–2,7 раза, валовой энергии — в 1,5–1,7 раза. По отношению к засухе наиболее устойчивыми культурами были ячмень (4,9 балла), яровая рожь (4,6), кормовые бобы (4,8 балла), менее устойчивым был овёс (3,8 балла). Все культуры, за исключением яровой ржи, оказались устойчивы к полеганию (5 баллов). Отмечено отсутствие поражённости вредителями и болезнями у мятликовых и бобовых. This article reports on gramineous cultivation as monoculture or binary sowing with field beans in Transbaikal conducted in 2016–2018. The experiment tested crop stress resistance and economically important traits. Seeding field beans with gramineous improved forage yield and nutritional value. Binary sowings exceeded pure ecosystems of gramineous by 2.3–2.7 times in green mass and 1.7–1.8 times — in digestible protein. Ecosystems of barley and oats with field beans performed the best, producing 34.9–37.2 t ha-1 of green mass, 5.2–5.4 t ha-1 of dry matter, 4.68–4.90 t ha-1 of feed units, 646–662 kg ha-1 of digestible protein, 54.6–57.2 GJ ha-1 of exchange energy, and 135–138 g of digestible protein per feed unit. Binary sowings of barley and oats with field beans exceeded monocultures by 1.6–1.9 times in feed units, 2.3–2.7 times — in digestible protein, 1.5–1.7 times — in gross energy. Based on a 0–5 scale, barley (4.9), spring rye (4.6), and field beans (4.8) tolerated drought well while oats were less resistant (3.8). Only rye was susceptible to lodging. Gramineous and legumes showed no disease symptoms or damage caused by pests.

Productivity and forage quality of triticale-grain legume mixtures in the Trans-Baikal Territory

2019 ◽  
Author(s):  
О. Андреева ◽  
Н. Пилипенко ◽  
Л. Сидорова ◽  
Н. Харченко
Keyword(s):  
Dry Matter ◽  
Nutritional Value ◽  
Grain Legumes ◽  
Grain Legume ◽  
Green Mass ◽  
Spring Triticale ◽  
Gross Energy ◽  
Digestible Protein ◽  
Green Mass Yield

Полевые и лабораторные исследования по возделыванию тритикале в смешанных посевах с зернобобовыми культурами проведены в 2014 2016 годах на полях НИИ ветеринарии Восточной Сибири филиала СФНЦА РАН, расположенных в ИнгодинскоЧитинской лесостепи Забайкалья. Цель исследований сравнить урожайность и питательную ценность тритикале в одновидовых и смешанных посевах с зернобобовыми культурами для получения высококачественного корма в условиях Забайкалья. Исследования выполнены на луговочернозёмной мучнистокарбонатной почве. Дана оценка зернобобовым культурам и тритикале по адаптивности к условиям выращивания, показаны их хозяйственно ценные признаки. Установлена возможность повышения продуктивности и питательной ценности кормовых агроценозов путём использования зернобобовых культур (гороха посевного и вики яровой) в смеси с тритикале. По продуктивности и питательной ценности зелёной массы смешанные посевы превосходили одновидовые агроценозы в 1,1 1,6 раза, по сухому веществу в 1,1 1,8 раза, кормовым единицам в 1,1 1,6 раза, переваримому протеину в 1,1 1,9 раза, валовой энергии в 1,2 1,9 раза. Наиболее высокую продуктивность и питательную ценность кормовых агроценозов сформировали смешанные посевы тритикале яровой с викой яровой: урожайность зелёной массы составила 20,2 т/га, сухого вещества 4,63 т/га, кормовых единиц 3,31 т/га, валовой энергии 49,5 ГДж при высокой обеспеченности переваримым протеином 168 г. В Забайкальском крае для обеспечения животноводства полноценным кормами в соответствии с зоотехническими нормами целесообразно использовать зерновые и зернобобовые культуры (тритикале яровую, вику яровую, горох посевной). Из зернобобовых культур наиболее высокой продуктивностью отличались агроценозы вики яровой, превышающие посевы гороха посевного на 8 17. Mixtures of triticale and grain legumes were tested under field and lab conditions in 2014 2016. The research was aimed to compare triticale yield and nutritional value as monoculture and grass mixture. The investigation took place on meadow chernozem carbonate soil. It evaluated the adaptability and economically important traits of triticale and grain legumes. Cultivation of grain legumes (pea and vetch) with triticale improved stand performance. Mixtures exceeded monocultures in green mass productivity and nutritional value by 1.1 1.6 times, dry matter by 1.1 1.8 times, geed units by 1.1 1.6 times, digestible protein by 1.1 1.9 times, gross energy by 1.2 1.9 times. Mixtures of spring triticale with vetch performed the best: green mass yield was 20.2 t ha1, dry matter 4.63 t ha1, feed units 3.31 t ha1, gross energy 49.5 GJ and digestible protein 168 g. Grain and grain legume crops were shown to be the good source of highquality forage, meeting the Standard. Spring vetch had the highest productivity among the grain legumes and exceeded pea by 8 17.

scholarly journals Yield and feed qualities of triticale mixed with high-protein crops

2021 ◽  
Vol 51 (1) ◽  
pp. 60-66
Author(s):  
O. T. Andreeva ◽  
N. G. Pilipenko ◽  
L. P. Sidorova ◽  
N. Yu. Kharchenko
Keyword(s):  
Dry Matter ◽  
Single Species ◽  
Steppe Zone ◽  
High Protein ◽  
Forest Steppe ◽  
Green Mass ◽  
Gross Energy ◽  
Digestible Protein ◽  
Growing Conditions ◽  
Mixed Crops

The results of field and laboratory studies on the cultivation of triticale mixed with high-protein crops are presented. The study was carried out during the period of 2015-2017 on meadow chernozem mealy-carbonate soil, light loam by granulometric composition, in the forest-steppe zone of Trans-Baikal Territory. The assessment of triticale in single-species and mixed crops for adaptability to growing conditions and yield is given. Economically valuable traits of these crops are shown. The possibility of increasing the yield and feed qualities of agrocenoses by sowing triticale with highprotein crops was established. On average, over the years of research, mixed crops outperformed single-species triticale agrocenoses in terms of yield and feed quality, green mass by 1.6-1.9 times, digestible protein by 2.6-3.7 times. In mixed crops, triticale with fodder beans provided the best results, the yield of green mass was 40.5 t/ha, dry matter – 5.70 t/ha, feed units – 4.67 t/ha, digestible protein – 785 kg/ha, exchange energy – 57.6 GJ/ha, availability of digestible protein per one feed unit – 168 g. Triticale crops mixed with fodder beans increased productivity compared with singlespecies crops in terms of green mass yield by 1.3-1.9 times, dry matter by 1.4-1.9 times, feed units by 1.4-2.0 times, gross energy by 1.5-2.0 times. All crops are resistant to drought and lodging. The absence of pest and disease infestation in triticale was noted.

Nutritional evaluation of wheat 1. Effects of preparation on digestibility of dry matter, energy and nitrogen in pigs

1974 ◽  
Vol 19 (3) ◽  
pp. 359-365 ◽  
Author(s):  
M. Ivan ◽  
L. R. Giles ◽  
A. R. Alimon ◽  
D. J. Farrell
Keyword(s):  
Dry Matter ◽  
Nitrogen Retention ◽  
Metabolizable Energy ◽  
Apparent Digestibility ◽  
Whole Grain ◽  
Whole Wheat ◽  
Gross Energy ◽  
Dietary Components ◽  
Matter Energy ◽  
Plot Design

SUMMARY1. A split-plot design was used to study apparent digestibility of dry matter, gross energy and nitrogen of a whole grain wheat diet and processed (hammermilled, rolled or hammermilled and then steam-pelleted) wheat diets by eight small (33·9 ± 0·1 kg) and eight large (70±1·7 kg) pigs. Metabolizable energy and nitrogen retention were also studied with the small pigs.2. The processed wheat diets were superior to the whole grain wheat diet in all the parameters measured.3. There were no significant differences between the performance of pigs given the differently processed wheat diets.4. Apparent digestibility of dietary components particularly in the whole wheat diet was significantly higher when diets were given to small pigs than when given to large pigs.

The effect of different proportions of hay and fortified rolled barley in the diet on digestible-energy value and urinary-energy excretion by cattle

1972 ◽  
Vol 79 (1) ◽  
pp. 99-103 ◽  
Author(s):  
A. M. Raven
Keyword(s):  
Organic Matter ◽  
Dry Matter ◽  
Rumen Fluid ◽  
Latin Square ◽  
Progressive Increase ◽  
Linear Increase ◽  
Metabolizable Energy ◽  
Digestible Energy ◽  
Gross Energy ◽  
Concentrate Treatment

SUMMARYA 6 x 6 Latin Square balance experiment was carried out using six Friesian steers, each of which initially weighed about 304 kg. The six treatments studied were an all-hay diet and five other diets containing 20,40,60,80 and 100 % of rolled barley fortified with mineral and vitamin supplements, accompanied by correspondingly reduced proportions of hay. Each diet was fed at an estimated maintenance level of feeding.The progressive increase in the proportion of concentrate gave a significantly linear increase (P < 0·001) in both digestible and calculated metabolizable energy. The actual increase in digestible energy was from 2·62Mcal/kg dry matter (59·3% of the gross energy) on the all-hay treatment to 3·42 Mcal/kg dry matter (79·5% of the gross energy) on the all-concentrate treatment. Use of the determined digestible energy values for the all-hay and fortified barley diets to calculate the digestible energy of the four mixed diets gave results in reasonably good agreement with the determined values, the maximum difference being 0·12 Mcal/kg dry matter, which represented 3·83 % of the determined value. The losses of energy in the urine expressed as percentages of the gross energy of the diets showed a small but significantly linear decrease (P < 0·01) with increase in proportion of barley in the diet. The molar proportions of steamvolatile acids in samples of rumen fluid taken from two animals on each treatment indicated that increase in the proportion of concentrate was associated with tendencies for increase in acetic acid, decrease in propionic acid and little change in butyric acid. The mean digestibility of the organic matter was 62·6 % on the all-hay treatment and 81·8 % on the all concentrate treatment. The progressive increase in the proportion of concentrate gave a significantly linear increase (P < 0·001) in digestibility of the organic matter. Although intakes of nitrogen decreased with increase in the proportion of concentrate due to a decrease in the amount of dry matter fed, the weights of nitrogen retained were well maintained and when expressed as percentages of intake showed a significantly linear increase (P < 0·01).

Productivity and forage quality of scarlet amaranth and field beans in the Trans-Baikal Territory

2019 ◽  
Author(s):  
О. Андреева ◽  
Н. Пилипенко ◽  
Л. Сидорова ◽  
Н. Харченко
Keyword(s):  
Dry Matter ◽  
Nutritional Value ◽  
Forage Production ◽  
Pests And Diseases ◽  
Fodder Quality ◽  
High Feed ◽  
Digestible Protein ◽  
High Forage ◽  
Field Beans

Исследования проведены в 20112013 годах на полях НИИ ветеринарии Восточной Сибири филиала СФНЦА РАН, расположенных в ИнгодинскоЧитинской лесостепи. Увеличение производства кормов, улучшение их качества и энергонасыщенности главная задача агропромышленного комплекса Забайкальского края. Одним из направлений в решении данной проблемы является возделывание малораспространённых и нетрадиционных однолетних кормовых культур, обладающих высокой кормовой продуктивностью, адаптивностью к природноклиматическим условиям региона. Цель и задачи исследований изучить возможность формирования высокой урожайности и питательной ценности нетрадиционных и малораспространённых кормовых культур (амаранта метельчатого, кормовых бобов), адаптивных к экстремальным условиям Забайкалья. Сорта изучаемых культур в опыте: амарант метельчатый Янтарь, кормовые бобы Сибирские. Дана оценка этим культурам по адаптивности к условиям выращивания и комплексу хозяйственно ценных признаков. Амарант метельчатый и кормовые бобы обладают высоким потенциалом кормовой продуктивности, качеством корма, устойчивостью к засухе (3,23,8 баллов), полеганию (5 баллов), вредителям и поражённостью болезням, обеспечивают урожайность зелёной массы 25,228,4 т/га, сухого вещества 5,75,8 т/га, кормовых единиц 4,4 т/га, обменной энергии 55,956,8 ГДж/га, переваримого протеина 695893 кг/га с содержанием в 1 корм. ед. 158203 г переваримого протеина, формируют семенную продуктивность 0,51,28 т/га. Для обеспечения животноводства Забайкальского края полноценным высокоэнергетическим кормом целесообразно использовать амарант метельчатый и кормовые бобы. The investigation took place in 20112013 at the EastSiberian Research Institute of Veterinary Medicine. Agriculture in the TransBaikal Territory is oriented towards increase in forage production and improvement of fodder quality and energy value. One of the ways to do that is to cultivate rare and unconventional annual forage species having high feed productivity and adaptability to the regional conditions. The goal and objectives of this research were to analyze the productivities and nutritional value of scarlet amaranth and field beans tolerant to the extreme conditions of the TransBaikal Territory. Scarlet amaranth Yantar and field beans Sibirskie performed as the objects of study. The investigation tested their adaptability and economically important traits. Scarlet amaranth and field beans had high forage productivity and quality, resistance to drought, lodging, pests and diseases. These crops could yield 25.228.4 t ha1 of green mass, 5.75.8 t ha1 of dry matter, 4.4 t ha1 of feed units, 55.956.8 GJ ha1 of exchange energy, 695893 kg ha1 of digestible protein and 0.51.28 t ha1 of seeds. One feed unit contained 158203 g of digestible protein. Scarlet amaranth and field beans were shown to be good sources of highenergy and highquality feed for livestock in the TransBaikal Territory.

Comparative performance of five genotypes of Indonesian large ruminants. 1. Effect of dietary quality on liveweight and feed utilization

1985 ◽  
Vol 36 (5) ◽  
pp. 743 ◽  
Author(s):  
JB Moran
Keyword(s):  
Dry Matter ◽  
Metabolizable Energy ◽  
Dietary Quality ◽  
Crossbred Cattle ◽  
Feeding Trial ◽  
Comparative Performance ◽  
Dietary Nutrients ◽  
Gross Energy ◽  
Swamp Buffalo ◽  
Nitrogen Phosphorus

Diets containing 85% (high concentrate) or 30% (high roughage) concentrate were individually fed for 280 or 224 days, respectively, to young Madura, Ongole, Bali, Grati (or Friesian crossbred) and swamp buffalo bulls. Each feeding trial was divided into early or late periods to study the effects of approaching maturity on growth and feed use. The digestibility of dietary nutrients, the balances of nitrogen, phosphorus and calcium, and the metabolizability of the gross energy of the high-roughage diet were measured. Growth rates in decreasing order were Grati, Ongole, buffalo, Bali and Madura. Genotype differences in growth were generally the result of variations in intake rather than in feed use. There were genotype x trial interactions in feed intake and liveweight gain during the latter part of each trial in that on the high-concentrate diet, the performance of Ongole and Madura bulls was poorer than that of the Grati and buffalo bulls whereas performances were similar on the high-roughage diet. Dietary metabolizable energy contents were estimated to be 11.8 and 9.5 MJ kg-1 dry matter for the two diets, respectively. Liveweights were higher and more divergent between genotypes at the end of the high-concentrate feeding period. As they were also higher than those reported for mature animals maintained under traditional village management, it was concluded that indigenous Indonesian large ruminants would respond to improved feeding and management. However, their feedlot performances would be unlikely to equal that of dairy crossbred cattle.

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