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| Registros recuperados: 26 | |
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| Witten, Stephanie; Böhm, Herwart; Aulrich, Karen. |
| In der Fütterung monogastrischer Nutztiere spielt neben der ausreichenden Menge an Rohprotein (XP) auch die Proteinqualität eine entscheidende Rolle. Die Proteinqualität hängt maßgeblich vom Verhältnis der Aminosäuren (AS) untereinander ab. Ein negativer Einfluss steigender XP-Gehalte in verschiedenen Körnerleguminosen auf das AS-Muster ist bereits beschrieben worden (Schumacher et al. 2011, Wang et al. 2004). Da ein hoher XP-Gehalt ein wichtiges Kriterium bei der Sortenwahl ist, ist es von noch größerer Bedeutung, eine solche Abhängigkeit zu erkennen. Ebenso wie in der Literatur beschrieben, nahm in dieser Stichprobe der Gehalt einiger essentieller AS tendenziell mit steigendem XP-Gehalt ab. Unter diesen befinden sich die in der Monogastrierfütterung... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general; Feeding and growth; Pigs; Poultry. |
| Ano: 2015 |
URL: http://orgprints.org/26975/1/26975_witten.pdf |
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| Aulrich, Karen; Witten, Stephanie. |
| Die optimierte Rationsgestaltung in der Monogastrierernährung ist von zentralem Interesse in der ökologischen Tierhaltung, weil Imbalancen in der Inhaltsstoffzusammensetzung von Futtermitteln zu einer verringerten Futterverwertung und gesundheitlichen Einschränkungen führen können. Es ist nicht hinreichend bekannt, in welchem Ausmaß Inhaltsstoffgehalte und Verdaulichkeiten zwischen einzelnen Chargen derselben Einzelfuttermittel schwanken. Zudem unterscheiden sich Öko-Futtermittel durch das abweichende Management potentiell von konventionell erzeugten Futtermitteln. Daher ist es notwendig, die Zusammensetzung ökologisch erzeugter Futtermittel zu kennen. Um die Datengrundlage zu Inhaltsstoffen, Aminosäuren und ausgewählten B-Vitaminen in Öko-Futtermitteln... |
| Tipo: Report |
Palavras-chave: Feeding and growth; Pigs; Poultry. |
| Ano: 2018 |
URL: http://orgprints.org/35255/1/35255-11OE054-vTI-aulrich-2018-monogastrierernaehrung.pdf |
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| Witten, Stephanie; Aulrich, Karen. |
| Comprehensive information on B vitamin contents in cereals and grain legumes used for animal feeding is scarce. Thus, the objective of this study was to determine the contents of thiamine and riboflavin uniformly in a selection of cereals and grain legumes. Additionally, the evaluation of varietal and environmental effects on the amounts of both B vitamins was targeted. We analysed contents of thiamine and riboflavin with HPLC in 855 samples of different organically cultivated cereal and grain legume cultivars. Since the sample set was unbalanced, it had to be adapted for further statistical analyses. Data of 541 samples of ten cereal and grain legume cultivars was used to assess the influence of variety and environment with generalized linear models.... |
| Tipo: Journal paper |
Palavras-chave: Cereals; Pulses and oilseeds Feeding and growth. |
| Ano: 2018 |
URL: http://orgprints.org/33379/1/1-s2.0-S0377840117314803-main.pdf |
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| Witten, Stephanie; Aulrich, Karen. |
| B vitamins, such as thiamine and riboflavin, are often supplemented in diets for farm animals to prevent deficiencies. However, information on the content of these two B vitamins in organic feedstuffs is scarce. Recently, up-to-date information was published by our group. The objective of this work was to use present data to determine the native contents of thiamine and riboflavin in diets used for monogastric animal feeding in organic farming. We used the results of our recent study on the native thiamine and riboflavin contents of organic wheat (Triticum aestivum L.), rye (Secale cereale L.), triticale (Triticosecale L.), barley (Hordeum vulgare L.), oats (Avena sativa L.), field peas (Pisum sativum L.), field beans (Vicia faba L.), and blue lupins... |
| Tipo: Journal paper |
Palavras-chave: Cereals; Pulses and oilseeds Feeding and growth Pigs Poultry. |
| Ano: 2018 |
URL: http://orgprints.org/33378/1/Witten-Aulrich2018_Article_ExemplaryCalculationsOfNativeT.pdf |
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| Witten, Stephanie; Böhm, Herwart; Aulrich, Karen. |
| Die Gehalte an Rohnährstoffen und vor allem an limitierenden Aminosäuren von ökologisch erzeugten Futtererbsen und Ackerbohnen sind vor dem Hintergrund der 100 %-Biofütterung von Interesse. Um den Einfluss von Sorte und Umweltfaktoren auf die Rohnährstoff-, Lysin-, Cystein- und Methioningehalte zu untersuchen, wurden in drei Jahren Proben aus Sortenversuchen in Deutschland genommen und mittels NIRS analysiert. Im Mittel enthielten Futtererbsen 21,9 g und Ackerbohnen 29,6 g Rohprotein in 100 g Trockensubstanz. Das Rohprotein von Futtererbsen und Ackerbohnen enthielt je 100 g im Mittel 8,0 g Lysin, 1,0 g Methionin und 1,4 g Cystein bzw. 6,4 g Lysin, 0,7 g Methionin und 1,1 g Cystein. Der Faktor Sorte beeinflusste die Rohprotein- und Rohfettgehalte von... |
| Tipo: Journal paper |
Palavras-chave: Cereals; Pulses and oilseeds Feeding and growth. |
| Ano: 2015 |
URL: http://orgprints.org/29981/1/dn055972.pdf |
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| Aulrich, Karen; Böhm, Herwart; Witten, Stephanie. |
| The quality evaluation of organic protein feedstuffs, especially the quick and easy determination of the protein quality including the amino acid (AA) pattern in locally grown legumes like lupins, is very important to fulfil the requirements regarding the protein and amino acid supply of organically fed animals, especially monogastrics. The analytical data of organically cultivated feeds, as compared with conventional table values, shows a clear deviation of protein and amino acids between conventional and organic feeds. The standard tabular values (DLG 2014) are not sufficient for the calculation of feed rations. Therefore the ability of NIRS to predict the chemical composition and the essential AA’s of organically grown lupins was proofed. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Feeding and growth Crop husbandry. |
| Ano: 2015 |
URL: http://orgprints.org/29596/1/Aulrich-etal_2015_ILC_NIRS-lupin-aa-protein.pdf |
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| Witten, Stephanie; Grashorn, Michael; Aulrich, Karen. |
| Especially in areas with suboptimal conditions for the cultivation of soybeans, homegrown grain legumes, like faba beans and field peas, are very important protein feedstuffs for monogastric animals, like swine and poultry, in organic farming. Homegrown grain legumes contribute to the circular ecology of organic farms and add to the supply of essential amino acids to the diet. However, their value is not only determined by the crude protein content and amino acid profile but also by the bioavailability of crude protein and amino acids. Since only precaecally absorbed amino acids are potentially available in the metabolism, the precaecal digestibility of the crude protein and the amino acids can give a hint on their bioavailability. The aim of the study... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Feeding and growth Poultry. |
| Ano: 2019 |
URL: http://orgprints.org/35571/1/Wittenetal2019_ILS3.pdf |
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| Böhm, Herwart; Witten, Stephanie; Aulrich, Karen. |
| Legumes are the most important nitrogen suppliers in organic farming, have positive effects in crop rotation and are important protein feedstuffs. In 100 % organic feeding, the amino acid (AA) supply of feedstuffs is of increasing interest. The first- and second-limiting AAs for swine and poultry are lysine (Lys) and the sulfur-containing AAs (SAAs), methionine (Met) and cysteine (Cys), respectively. Since SAAs are limiting in the diet of monogastrics and, besides tryptophane, also in grain legumes, it was meant to examine, if sulfur (S) fertilization could increase the SAA contents in blue lupines (L. angustifolius L.) and if it affects the Lys content in different varieties. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Feeding and growth. |
| Ano: 2015 |
URL: http://orgprints.org/29595/1/B%C3%B6hm-etal_2015_ILC_sulfur-blue-lupin.pdf |
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| Aulrich, Karen; Böhm, Herwart; Witten, Stephanie. |
| The content of essential amino acids in grain legumes is of special interest for monogastric animal feeding in organic farming. Therefore, we investigated the influence of variety on the contents of crude protein (CP) and amino acids (AA) as well as the relation between CP and AA in field peas. Samples of 73 peas of 5 varieties (Alvesta, Auckland, KWS La Manscha, Navarro, Salamanca) were collected from field trials of organically managed experimental sites in Germany in 2011 - 2013. The contents of CP and AA were analyzed with NIRS. Pearson correlation analyses and mixed procedures were conducted in SAS 9.4. Variety affected CP and AA in peas. Alvesta had the lowest content of CP (21%) and almost all AA per kg dry matter (p < 0.001). KWS La Manscha... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds. |
| Ano: 2016 |
URL: http://orgprints.org/33384/1/Poster_Aulrich_Portugal_final.pdf |
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| Witten, Stephanie; Bokemeyer, Jörg; Aulrich, Karen. |
| The accuracy of the common nitrogen-to-protein conversion factor (factor) of 6.25 for different plant and animal products is recurrently discussed. As a result, the factor 5.70 is for example already in use to predict protein content in bread wheat. Variations in the composition of products can lead to differences in the relationship between nitrogen (N) and protein. Therefore, the factor could differ between species and due to breeding progress even within species. Since the composition of organically produced crops can differ from conventional production, it is of interest to check the common factor for different organically produced crops. Winter wheat (Triticum aestivum L., n=103), blue lupin (Lupinus angustifolius L., n=94), spring field pea (Pisum... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth. |
| Ano: 2016 |
URL: http://orgprints.org/29983/1/GfE_Witten_Bokemeyer_Aulrich_2016.pdf |
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| Witten, Stephanie; Grashorn, Michael; Aulrich, Karen. |
| A linear regression approach was used to determine the precaecal digestibility of organic field beans and field peas in young broiler chickens. Diets with field beans of the variety Taifun (283 g crude protein/kg DM) and field peas of the variety Alvesta (173 g crude protein/kg DM) in three inclusion rates (30, 50, and 70%) were fed ad libitum to 15- to 21-day-old broiler chickens. Digesta was sampled pen-wise and obtained from the gastro-intestinal tract between Meckel’s diverticulum and 2 cm anterior to the ileo-caeco-colonic junction. Despite the high inclusion rates of the test feedstuffs, all diets were accepted by the birds. Feed intake and body mass gain, as well as precaecal crude protein and amino acid digestibility, were higher in chickens fed... |
| Tipo: Journal paper |
Palavras-chave: Cereals; Pulses and oilseeds Feeding and growth Poultry. |
| Ano: 2018 |
URL: http://orgprints.org/33531/1/Wittenetal2018pcVQ.pdf |
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| Witten, Stephanie; Aulrich, Karen; Böhm, Herwart. |
| Grain legumes, like blue lupins, are important protein feedstuffs especially in organic farming. Their content of crude protein (CP) and essential amino acids (EAA) is of great interest. The sulfur-containing amino acids (SAA) methionine and cysteine are often limiting in common diets primarily for poultry. Therefore, we investigated, whether a sulfur fertilization of blue lupins could enhance their contents of SAA and if it has other effects regarding crop yield, CP and further EAA. Two branched (Boregine, Probor) and two determinated (Boruta, Sonet) blue lupin varieties were cultivated at an experimental station in Northern Germany in the years 2012, 2013, and 2015. The varieties were either grown with or without S fertilization (40 kg S ha-1; MgSO4).... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Composting and manuring. |
| Ano: 2016 |
URL: http://orgprints.org/33383/1/Abstracts_final.pdf |
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| Witten, Stephanie; Paulsen, Hans Marten; Weißmann, Friedrich; Bussemas, Ralf. |
| Die bedarfsgerechte Versorgung von Monogastriern mit den essentiellen und limitierenden Aminosäuren ist von großer Bedeutung. Im Ökologischen Landbau wirft dies aufgrund von unbefriedigenden Aminosäureprofilen der zur Verfügung stehenden Getreide- und Körnerleguminosenarten sowie der fehlenden Verfügbarkeit alternativer Einzel- und Ergänzungsfuttermittel Probleme auf. Durch die Differenz zwischen Aminosäurebedarf und –versorgung entsteht die sog. Aminosäurelücke. Um diese zu füllen, ist es nach EU Öko-Verordnung (EG 834/2007, EG 889/2008 und EU 505/2012) gestattet, die Ration für monogastrische Nutztiere aufzuwerten, indem 5 % der landwirtschaftlich erzeugten Proteinfuttermittel konventioneller Herkunft sein dürfen. Diese Ausnahmegenehmigung läuft zum Ende... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general; Feeding and growth; Health and welfare; Pigs; Poultry; Regulation. |
| Ano: 2015 |
URL: http://orgprints.org/26974/1/26974_witten.pdf |
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| Witten, Stephanie; Böhm, Herwart; Aulrich, Karen. |
| Zu einer optimalen Rationsgestaltung gehört das Wissen über die Zusammensetzung bzw. die Gehalte an wertgebenden Inhaltsstoffen in den Einzelfuttermitteln. Im Ökologischen Landbau sind Abweichungen von konventionellen Analyseergebnissen sowie stärkere Schwankungen der Inhaltsstoffgehalte beschrieben (Böhm et al. 2007). Da zudem Zusatzstoffe aus verschiedenen Gründen nicht einsetzbar und, wie z. B. freie Aminosäuren, nicht zugelassen sind, ist eine Aufwertung der Ration sehr schwierig. Dadurch nimmt die Bedeutung der Kenntnis über die Inhaltstoffe der genutzten Einzelfuttermittel zu. Vor allem die Versorgung mit Protein und essentiellen Aminosäuren, wie Lysin, Methionin und Cystein, spielt eine große Rolle und ist mit ökologisch erzeugten Futtermitteln nur... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general; Feeding and growth; Pigs; Poultry. |
| Ano: 2015 |
URL: http://orgprints.org/26981/1/26981_witten.pdf |
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| Aulrich, Karen; Witten, Stephanie. |
| A deficient supply of B vitamins leads to health problems and decreased performance in poultry and swine. Since B vitamins are water-soluble and continually excreted by mammals, they must be provided frequently with the diet to guarantee a sufficient supply. Thiamine (vitamin B1) plays a major role in the function of the nervous system and in the energy- and amino acid metabolism. Deficiencies lead to severe health problems. Cereal-based diets are supposed to contain sufficient amounts of thiamine for poultry and swine. However, recent information on the actual content of thiamine in grain legumes is scarce. Riboflavin (vitamin B2) also takes part in the energy and amino acid metabolism. Deficiencies often lead to a loss of mobility and other health... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Cereals; Pulses and oilseeds Feeding and growth. |
| Ano: 2019 |
URL: http://orgprints.org/35572/1/Aulrich_and_Witten_2019_ILS3.pdf |
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| Registros recuperados: 26 | |
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