Utilization of clover diets by sheep. 1. Intake and digestion of organic matter and cell wall constituents

1988 ◽  
Vol 39 (5) ◽  
pp. 871 ◽  
Author(s):  
CE McLaren ◽  
PT Doyle
Keyword(s):  
Cell Wall ◽  
Organic Matter ◽  
Dry Matter ◽  
Block Design ◽  
Subterranean Clover ◽  
Design Experiment ◽  
Randomized Block Design ◽  
Load Rate ◽  
Outflow Rate ◽  
Ad Libitum Intake

Nine mature Merino sheep received three clover diets in a randomized block design experiment. The diets were mature subterranean clover (MSC), apparent organic matter digestibility (OMD) 60%; green subterranean clover (GSC), OMD 72%; persian clover (PC), OMD 67070, and were given at 95% of measured ad libitum intake. The voluntary consumption of the MSC was lower than the intakes of the CSC and PC. Consequently, the sheep given MSC lost weight, while those receiving the more digestible diets gained weight. Associated with the different intakes in these clover diets, there there were no differences in the levels of ruminal fill, but there were differences in ruminal loads of dry matter (DM) and neutral detergent fibre (NDF) in sheep given MSC, GSC and PC, respectively. The flows of DM and OM through the abomasum were lower for MSC, and with a tendency for the fractional outflow rate of NDF of this diet to be lower (2.3 v. 2.8% h-1) when compared to the GSC and PC hays. The proportions of apparent OM (0.65-0.71), of NDF (0.71-0.82) and of ADF (0.95-140) digestion occurring in the rumen were similar for the three clover hays. The fractional digestion rates of potentially digestible NDF were higher for the more digestible clovers (c. 8.6% h-1) than for the MSC (6.5% h-1). The intake of the higher digestibility clovers may have been more related to the capacity of the sheep to use absorbed nutrients than to constraints imposed by ruminal digesta load, rate of digestion in the rumen or rate of outflow to the omasum. With the MSC the level of ruminal or dry matter load was low. In addition, the fractional rates of digestion and of outflow of cell wall constituents were or tended to be lower for this diet than for the other clovers. Intake of MSC may have been limited not only by these factors, but also by the supply of essential nutrients to the tissues or by other characteristics of the hay influencing its acceptability to sheep.

Effect of intraruminal infusion of urea on the response in voluntary food intake by sheep

1985 ◽  
Vol 36 (3) ◽  
pp. 483 ◽  
Author(s):  
JK Egan ◽  
PT Doyle
Keyword(s):  
Organic Matter ◽  
Food Intake ◽  
Dry Matter ◽  
Block Design ◽  
Ammonia Nitrogen ◽  
Dry Matter Intake ◽  
Plant Cell Walls ◽  
Randomized Block Design ◽  
Ad Libitum ◽  
Ad Libitum Intake

Six mature Merino sheep received three treatments in a randomized block design experiment. The treatments were: chopped oaten hay diet at 90% of ad libitum intake without urea (L); the ciet offered at the same level as for L with urea infused into the rumen at 11.5 g kg-1 dry matter intake (LU); and the diet offered at 90% of the ad libitum intake achieved with urea infused at 11.5 g kg-1 dry matter intake (HU). Sheep given HU consumed 37% more (P < 0.01) organic matter (OM) than those fed L or LU, but the apparent digestibility of OM did not vary (59.2-61.8%) between treatments. The addit onal food consumption was associated with c. 20% increase (P < 0.05) in the weight of OM in the reticulorumen and significantly higher (by 10-35%; P < 0.05) fractional outflow rates of most dietary and microbial constituents of digesta. The fractional digestion rate of potentially digestible plant cell walls was not affected by urea, but the flow of microbial non-ammonia nitrogen from the abomasum was enhanced (L, 7.0; LU, 8.2; HU, 12.5 g day-1; P < 0.05). The results of this study suggest that the stimulatory effect of urea upon food intake was associated with the provision of additional microbial protein for digestion in the intestines, rather than changes in the rate or extent of organic matter fermentation in the reticulorumen.

scholarly journals PENGARUH PENAMBAHAN MULTI NUTRIENT SAUCE DALAM RANSUM TERHADAP KECERNAAN BAHAN KERING DAN BAHAN ORGANIK PADA DOMBA

2020 ◽  
Vol 4 (1) ◽  
pp. 1-6
Author(s):  
Yogi Ramdani, Erwanto, Farida Fathul, dan Liman
Keyword(s):  
Organic Matter ◽  
Dry Matter ◽  
Block Design ◽  
Animal Husbandry ◽  
Dry Matter Digestibility ◽  
Group 4 ◽  
Randomized Block Design ◽  
Group 3 ◽  
Group 5 ◽  
Group 2

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.

scholarly journals KERCERNAAN IN VITRO BAHAN KERING DAN BAHAN ORGANIK SERTA PROTEIN RANSUM BERBASIS PAKAN FERMENTASI

2014 ◽  
Vol 2 (2) ◽  
pp. 70
Author(s):  
Aang Baitul Mizan ◽  
Andi Murlina Tasse ◽  
Deki Zulkarnain
Keyword(s):  
Organic Matter ◽  
Experimental Design ◽  
Rice Bran ◽  
Dry Matter ◽  
Block Design ◽  
Animal Nutrition ◽  
Animal Science ◽  
Dry Matter Digestibility ◽  
Randomized Block Design

This study has conducted four weeks in Laboratory of Animal Nutrition Department of Animal Science, Faculty of Animal Science, Haluoleo University, Kendari. The treatments R0 = rations based feed’s non fermented, R1 = rations based 40% rice bran fermented (RBF), R2 = rations based 45% RBF, R3 = rations based 50% RBF, R4 = rations based 55% RBF, R5 = rations based 60% RBF. The experimental design used a randomized block design (RBD) with 5 treatments and 4 groups. The results showed that dry matter digestibility (DMD) of R1, R2, R5 higher than R0 (94,17%, 90,98%, 91,04% vs 88.60%). In contrast, DMD of R3 and R4 lower than R0 (80,90% and 80,89% vs 88,60%). Organic matter digestibility (OMD) of R0 lower than R1, R2, R3, R4 and R5 ( 62,58% vs 90,32%, 90,55%, 90,78%, 91,15% and 90,41%). In contrast, OMD of R4 higher than R1, R2, R3, R5 and R0 (91,41% vs 90,32%, 90,55%, 90,78%, 90,41% and 62,58%). Ammonia (NH3) concentrations of R1, R2, R3, R4 and R5 higher than R0 (8,20 mM, 5,40 mM, 8,67 mM, 7,22 mM and 7,42 mM vs 3,20 mM). The conclusion of this study was FBR based 40%, 45%, 50%, 55% and 60% RBF feasible to ruminant’s feed.Keywords : Feed’s Fermented, Digestibility, Dry Matter, Organic Matter, Ammonia.ABSTRAKPenelitian ini bertujuan mengevaluasi kelayakan penggunaan ransum berbasis pakan fermentasi untuk ternak ruminansia berdasarkan kecernaan bahan kering dan bahan orgaik serta protein secara In Vitro. Penelitian ini dilaksanakan selama empat minggu di Laboratorium Ilmu Nutrisi dan Makanan Ternak Fakultas Peternakan Universitas Haluoleo, Kendari. Perlakuan yang dicobakan adalah R0= ransum berbasis pakan non fermentasi (kontrol), R1= ransum berbasis dedak padi fermentasi 40%, R2= ransum berbasis dedak padi fermentasi 45%, R3= ransum berbasis dedak padi fermentasi 50%, R4= ransum berbasis dedak padi fermentasi 55%, R5= ransum berbasis dedak padi fermentasi 60%. Rancangan percobaan yang digunakan rancangan acak kelompok (RAK) dengan 5 perlakuan dan 4 kelompok. Hasil analisis ragam menunjukkan kecernaan bahan kering ransum berbasi dedak padi fermentasi 40%, 45%, dan 60% lebih tinggi dibanding dengan ransum berbasis pakan non fermentasi (94,17%; 90,98% dan 91,04% dibanding dengan 88,60%). Sebaliknya, ransum berbasis dedak padi fermentasi 50% dan 55% lebih rendah dibanding dengan ransum berbasis pakan non fermentasi (80,90% dan 80,89% dibanding dengan 88,60%). Kecernaan bahan organik ransum berbasis pakan non fermentasi lebih rendah dibanding dengan ransum berbasis dedak padi fermentasi 40%, 45%, 50%, 55% dan 60% (62,58 % dibanding dengan 90,32 %, 90,55 %, 90,78 %, 91,15 % dan 90,41 % ). Sebaliknya kecernaan bahan organik ransum berbasis dedak padi fermentasi 55% lebih tinggi dibanding dengan ransum berbasis dedak padi fermentasi 40%, 45%, 50%, 60% dan kontrol (91,41% dibanding dengan 90,32%, 90,55%, 90,78%, 90,41% dan 62,58%). Konsentrasi amonia ransum berbasis dedak padi fermentasi 40%, 45%, 50%, 55% dan 60% lebih tinggi dibanding dengan ransum berbasis pakan non fermentasi (8,20 mM, 5,40 mM, 8,67 mM, 7,22 mM dan 7,42 mM dibanding dengan 3,20 mM). Kesimpulan bahwa ransum berbasis dedak padi fermentasi 40% hingga 60% layak digunakan untuk pakan ternak ruminansia.Kata kunci: Pakan Fermentasi, Kecernaan Bahan Kering, Kecernaan Bahan Organik, Amonia.

scholarly journals Pengaruh suplementasi minyak ikan terproteksi terhadap kecernaan nutrien bahan kering (bk ) dan bahan organik (bo) pada kambing peranakan ettawa (pe)

2018 ◽  
Vol 6 (2) ◽  
pp. 57-62
Author(s):  
Tri Ida Wahyu Kustyorini
Keyword(s):  
Organic Matter ◽  
Fish Oil ◽  
Research Method ◽  
Dry Matter ◽  
Block Design ◽  
Elephant Grass ◽  
Anova Analysis ◽  
Dry Matter Digestibility ◽  
Randomized Block Design ◽  
Significant Difference

Abstrak Penelitian ini bertujuan untuk mengetahui tingkat kecernaa bahan kering (BK) dan bahan organik (BO) pada kambing peranakan ettawa. Materi yang digunakan adalah 9 ekor kambing jantan peranakan ettawa dan minyak ikan. Metode penelitian yang digunakan adalah metode percobaan lapang dengan menggunakan Rancangan Acak Kelompok (RAK). Perlakuan yang diujikan adalah P0: pakan control (rumput gajah dan konsentrat), P1 (rumput gajah, konsentrat + minyak ikan), P2 (rumput gajah, konsentrat + Ca-minyak ikan). Setiap perlakuan kambing PE diulang sebanyak 3 kali. Variabel yang diamati pada penelitian adalah kecernaan bahan kering (BK) dan bahan organik (BO).hasil penelitian dianalisis dengan mnggunakan analisis anova dan jika terdapat pengaruh dilanjut dengan uji BNT. Berdasarkan hasil penelitian menunjukkan bahwa adanya perbedaan yang tidak nyata P>0,05 terhadap kecernaan bahan kering (BK) dan kecernaan bahan organik (BO) pada kambing peranakan ettawa.  Kecernaan BK tertinggi pada P0 sebesar 92,70% dan kecernaan BO tertinggi juga pada P0 sebesar 86,21%. Kesimpulan yang diperoleh dari hasil penelitian ini yaitu pemberian minyak ikan terproteksi tidak memberikan pengaruh yang nyata terhadap tingkat kecernaan BK dan BO.   ABSTRACT  This study aims to determine the level of dry matter digestibility and organic matter in ettawa breed goats. The material used was 9 male ettawa breeds and fish oil. The research method used is a field trial method using Randomized Block Design (RBD). The treatments tested were P0: control feed (elephant grass and concentrate), P1 (elephant grass, concentrate + fish oil), P2 (elephant grass, concentrate + fish oil Ca-oil). Each treatment of PE goats is repeated 3 times. The variables observed in the study were dry matter digestibility and organic matter. The results of the study were analyzed by using ANOVA analysis. Based on the results of the study showed that there was no significant difference P> 0.05 to the dry matter digestibility (DM) and digestibility of organic matter (OM) in ettawa breeds. The highest DM digestibility at P0 was 92.70% and the highest OM digestibility was also at P0 of 86.21%. The conclusion obtained from the results of this study is that the provision of protected fish oil does not have a significant effect on the digestibility level of DM and OM.

scholarly journals Effect of fermentation on mixed rumen contents and jackfruit peel using Aspergillus oryzae on in vitro gas production and digestibility

2022 ◽  
Vol 335 ◽  
pp. 00048
Author(s):  
Mashudi Mashudi ◽  
Wahyuni Nurmawati
Keyword(s):  
Organic Matter ◽  
Analysis Of Variance ◽  
Aspergillus Oryzae ◽  
Dry Matter ◽  
Block Design ◽  
Gas Production ◽  
Dry Matter Digestibility ◽  
Randomized Block Design ◽  
In Vitro Gas Production

The objective of this research was to investigate the effect of Aspergillus oryzae on fermentation of mixture of rumen contents and jackfruit peel on in vitro gas production and digestibility. The method used in this study was an experiment using a randomized block design (RBD) of 4 treatments and 3 replications. The treatments including of T0 = 50% rumen contents + 50% jackfruit peel, T1 = 40 % rumen contents + 60% jackfruit peel + 0,4% Aspergillus oryzae, T2 = 30% rumen contents + 70% jackfruit peel + 0,4% Aspergillus oryzae, T3 = 20% rumen contents + 80% jackfruit peel + 0,4% Aspergillus oryzae. Variables observed were gas production, dry matter digestibility (DMD), and organic matter digestibility (OMD). Data were analyzed by using Analysis of Variance (ANOVA) from Randomized Block Design, if there were significant effect between the treatments then tested with least significant different (LSD). The result showed that fermentation of mixture of rumen contents and jackfruit peel have highly significant effect (P<0.01) on gas production, and significant effect (P<0.05) on DMD and OMD. Gas production, DMD and OMD of fermented mixture of rumen contents and jackfruit peel are higher than control without fermentation. It is concluded that the higher jackfruit peels the higher gas production, DMD and OMD.

scholarly journals Pengaruh Suplementasi Minyak Ikan Lemuru Terproteksi dan L-Carnitin Dalam Ransum Terhadap Kecernaan Bahan Kering dan Bahan Organik Pada Pakan Sapi Perah Laktasi

2017 ◽  
Vol 15 (1) ◽  
pp. 41
Author(s):  
Sudibya Sudibya ◽  
Kharunia Rezki Akbar ◽  
Wara Pratitis Sabar ◽  
Joko Riyanto
Keyword(s):  
Organic Matter ◽  
Fish Oil ◽  
Dairy Cows ◽  
Rice Straw ◽  
Dry Matter ◽  
Block Design ◽  
Dry Matter Digestibility ◽  
Lactating Dairy Cows ◽  
Randomized Block Design ◽  
Materials Used

<em>This study aimed to determine the effect of supplementation lemuru fish oil protected and L-carnitine on digestibility value of lactating dairy cows. The materials used were 12 lactating dairy cows with average body weight 400 ± 5 kg. The study design was a randomized block design with 4 treatments and each treatment consisting of 3 blocks, each block contains one period of lactation dairy cows. Treatments were P0 = 45% rice straw + 55% concentrate; P1 = 15% rice straw + 30% fermented rice straw + 55% concentrate; P2 = 15% rice straw + 30% fermented rice straw + 55% concentrate + 1000 ppm L-carnitine; and P3 = 15% rice straw + 30% rice straw fermented rice straw + 55% concentrate + 1000 ppm L-carnitine + 4% protected lemuru fish oil. . The results of variance analysis showed that supplementation protected lemuru fish oil and L-carnitine in the diet rice straw fermentation was high significantly increased (P &lt;0.01) on dry matter intake, consumption as well as dry matter digestibility and digestibility of organic matter in lactating dairy cows. It could be concluded that supplementation protected lemuru fish oil and L-carnitine in the diet of rice straw fermented able to reduce the consumption of dry matter and organic matter and increase the value of dry matter and organic matter digestibility.</em>

scholarly journals EFEITOS DE LÂMINAS DE IRRIGAÇÃO NA PRODUÇÃO DE MUDAS DE Eucalyptus grandis W. (HILL ex. MAIDEN) EM SUBSTRATO DE FIBRA DE COCO

Irriga ◽  
2005 ◽  
Vol 10 (2) ◽  
pp. 123-134 ◽  
Author(s):  
Jane Luísa Wadas Lopes ◽  
Irae Amaral Guerrini ◽  
João Carlos Cury Saad
Keyword(s):  
Water Management ◽  
Aerial Part ◽  
Dry Matter ◽  
Block Design ◽  
Eucalyptus Grandis ◽  
Morphological Characteristics ◽  
Design Experiment ◽  
Coconut Fiber ◽  
Branch Number ◽  
Randomized Block Design

 EFEITOS DE LÂMINAS DE IRRIGAÇÃO NA PRODUÇÃO DE MUDAS DE Eucalyptus grandis W. (HILL ex. MAIDEN) EM SUBSTRATO DE FIBRA DE COCO  Jane Luísa Wadas Lopes1; Iraê Amaral Guerrini2; João Carlos Cury Saad11Departamento de Engenharia Rural, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista, Botucatu-SP.2Departamento de Recursos Naturais, Faculdade de Ciências Agronômicas,  Universidade Estadual Paulista, Botucatu-SP  1 RESUMO            Este trabalho teve por objetivo avaliar lâminas de irrigação na produção de mudas de Eucalyptus grandis espaçadas a 49 cm2, produzidas com substrato de fibra de coco pasteurizada. O experimento foi conduzido na empresa Camará – Mudas Florestais em Ibaté, SP, nas estações inverno – primavera do ano de 2003, constituindo-se de um delineamento de blocos ao acaso com quatro repetições, sendo cinco lâminas de irrigação diárias (6, 8, 10, 12 e 14 mm), aplicadas através de uma barra de irrigação em diferentes horários (10, 13 e 16 h). Aos 108 dias após a aplicação das lâminas foram realizadas avaliações da sobrevivência final das mudas em todas as parcelas, altura de parte aérea, diâmetro de colo, relação altura da parte aérea / diâmetro de colo, número de pares de folhas, número de ramos, matéria seca da parte aérea e da radicular, matéria seca total e área foliar. Os resultados indicaram que houve influência das lâminas de irrigação na sobrevivência das mudas, sendo que sob as lâminas de 6 e 8 mm dia-1  a produção ficou drasticamente comprometida. Com relação às características morfológicas, verificou-se, pela análise de regressão realizada, a influência das lâminas em todas as variáveis. Desta maneira, concluiu-se que as lâminas de irrigação de 12 e de 14 mm dia-1 foram as que mais contribuíram para o desenvolvimento das mudas, com qualidade ótima aos 108 dias após semeadura. As características químicas do substrato possibilitaram ótimo desenvolvimento das plantas. UNITERMOS: Manejo hídrico, substrato, viveiro, eucalipto.  LOPES, J.L.W., GUERRINI, I.A., SAAD, J.C.C. EFFECTS OF IRRIGATION DEPTHS ON Eucalyptus grandis W. (HILL ex. MAIDEN) SEEDLINGS IN COCONUT FIBER SUBSTRATE  2 ABSTRACT The aim of this study was to assess the effects of irrigation depths on Eucalyptus grandis seedling produced on coconut fiber substrate. The experiments took place in Camará Commercial Farm (Camará Mudas Florestais – Forest Seedling), in Ibaté, SP, from June to September 2003, in a randomized block design experiment with 4 replications and daily irrigations (6, 8, 10, 12 and 14 mm), applied at different times (at 10 am, 1 pm and 4 pm). 108 days after sowing, the following parameters were assessed: aerial part height, bond diameter, aerial part height/bond diameter relation, number of leaf pairs, branch number, aerial part and root dry matter, total dry matter and leaf area. The results pointed out that the irrigation depths as well as the substrate affected the bedder final quality. The survival degree was strongly influenced by the watering laminar flux; i.e., depths of 6 and 8 mm, that drastically compromised the production. Regarding the morphological characteristics, regression analysis demonstrated that the irrigation depths influenced all parameters. Thus, it can be concluded that irrigation depths of 12 and 14 mm day-1 helped the bedder development achieving excellent quality at 108 days after sowing. KEYWORDS: water management, substrate, greenhouse, eucalyptus.

scholarly journals Pemberian tepung bonggol pisang kepok fermentasi daiam pakan ternak babi fase grower dan efeknya terhadap kecernaan nutrien

2020 ◽  
Vol 7 (1) ◽  
pp. 6-13
Author(s):  
Sabarta Sembiring ◽  
Pratiwi Trisunuwati ◽  
Osfar Sjofjan ◽  
Irfan H. Djunaidi
Keyword(s):  
Organic Matter ◽  
Crude Protein ◽  
Dry Matter ◽  
Block Design ◽  
Control Diet ◽  
Nutrient Digestibility ◽  
Growing Pigs ◽  
Average Value ◽  
Dry Matter Digestibility ◽  
Randomized Block Design

Sixteen crossbred growing pigs Duroc x Landrace, (10 weeks of age; initial body weight 27 ± 3.92 kg) were allotted into four treatments in a randomized block design to evaluate the effects of inclusion of fermented kepok banana corm (FKBC) in the diet on the nutrient digestibility of growing pigs. There were four treatments diets offered:  basal diets without FKBC (RO); basal diets + 7% FKCB (R1); basal diets + 14% FKCB (R2); basal diets + 21% FKCB (R3). Inclusion of 21% FKBC in the diet of pigs significantly reduced (P <0.01) dry matter intake and organic matter compared to the control diet. There were no significant different between 14% and 21% FKCB on the intake and digestibility of dry matter and organic matter of the pigs. However, inclusion of FKCB at the level of 7% showed the optimum digestibility of dry matter, organic matter, crude protein, and energy with the average value of 66.57%, 70.48%, 83,43% and 70,76%, respectively. In addition, mineral consumption and retention of Ca and P were 14.3 and 9.1 g/h, respectively with the value of mineral retention both Ca and P were 11.9 and 7.5 g/h, respectively. It can be concluded that inclusion of FKCB at the level of 7% increased dry matter digestibility and organic matter. ABSTRAK Sejumlah 16 ekor ternak babi persilangan Duroc x Landrace fase grower (berumur 10 minggu dengan bobot badan awal berkisar 27± 3,92 kg) diberi 4 macam pakan perlakuan menggunakan Rancangan Acak Kelompok (RAK) dipakai untuk mengevaluasi kecernaan nutrien. Terdapat 4 perlakuak pakan yang diberikan masing-masing adalah: pakan basal tanpa BPKF (R0); pakan basal + 7% BPKF (R1); pakan basal + 14% BPKF (R2); pakan basal + 21% BPKF (R3)   Pemberian sejumlah 21% BPKF dalam ransum sangat nyata (P<0,01) menurunkan konsumsi bahan kering dan bahan organik dibanding pakan kontrol 0 % pakan fermentasi. Penggunaan produk fermentasi pada level 14 % tidak nyata (P>0,05) berbeda terhadap konsumsi dan kecernaan bahan kering dan bahan organik dibanding pemakaian level 21%. Level 7 % penggunaan FKCB adalah angka optimum menghasilkan nilai rataan kecernaan bahan kering dan bahan organik masing-masing 66,57 dan 70,48% dan kecernaan protein kasar dan energi masing-masing 83,43 dan 70,76%. Disimpulkan bahwa penggunaan tepung BPKF pada level 7 % adalah terbaik pada variabel kecernaan bahan kering dan bahan organik.

Nutritive value of subterranean clover in a temperate environment

1996 ◽  
Vol 36 (7) ◽  
pp. 803 ◽  
Author(s):  
JG Mulholland ◽  
KS Nandra ◽  
GB Scott ◽  
AW Jones ◽  
NE Coombes
Keyword(s):  
Cell Wall ◽  
Protein Synthesis ◽  
Organic Matter ◽  
Dry Matter ◽  
Nutritive Value ◽  
Subterranean Clover ◽  
Water Soluble ◽  
Microbial Protein ◽  
Microbial Protein Synthesis ◽  
Wool Growth

A study was made over 2 years of the nutritive value of the subterranean clover (Trifolium subterraneum L.) cultivars, Trikkala, Larisa and Goulburn, in grazing experiments with Border Leicester x Merino lambs. Liveweight gain was similar for all cultivars in the first year and in the second year was higher on Larisa (153 g/day) compared with Goulburn and Trikkala (131 and 103 g/day, respectively). Wool growth was not significantly different between cultivars. Both the digestibility and water-soluble carbohydrate content of the petiole and stem plant fraction were significantly (P<0.05) higher than those of the leaf fraction, even though the leaf had a lower level of cell wall organic matter. The ratio of lignin to cell wall organic matter was also higher in the leaf fraction. Samples obtained via oesophageal fistula showed that petioles comprised most of the dry matter in the diet and, thus, were the major contributor to energy supply. Differences were found in the degradability characteristics of the 3 cultivars which led to significant (P<0.05) differences in the concentration of rumen degradable dry matter and effective rumen degradable protein (ERDP). During the vegetative and early flowering stages, the concentration of ERDP exceeded the supply of fermentable metabolisable energy required for microbial protein synthesis. In mature clover, the concentration of ERDP was low and limiting microbial protein synthesis. The degradation characteristics of protein were highly correlated with liveweight gain (r2 = 0.90) and wool growth (r2 = 0.70). It is suggested that increasing the petiole : leaf ratio could increase the efficiency of utilisation of subterranean clover diets.

Utilization of clover diets by sheep. 3. Palatability of a mature subterranean clover hay

1988 ◽  
Vol 39 (5) ◽  
pp. 891 ◽  
Author(s):  
PT Doyle
Keyword(s):  
Cell Wall ◽  
Organic Matter ◽  
Feed Intake ◽  
Dry Matter ◽  
Subterranean Clover ◽  
Physical Nature ◽  
Feeding Technique ◽  
Voluntary Intake

Two experiments were conducted using an intra-ruminal feeding technique to investigate the possibility that voluntary intake of a mature subterranean clover hay was limited by its palatability.Intra-ruminal additions of the hay, in a form approximating the physical nature of rumen dry matter, at levels up to 40% of the amounts voluntarily consumed, did not reduce oral feed intake. The additions also had no significant effects on the digestibility of organic matter or cell wall constituents or on the fractional rates of digestion in or passage from the reticula-rumen. Importantly, the amounts of digesta dry matter, and its components, in the rumen were increased in proportion to additional feed given through the fistula.These results indicate that palatability limited the intake of the clover.

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