Einsatz von Erbsen und Rapsextraktionsschrot in der intensiven
Broilermast (2017) UFOP-Schriften | Agrar, Abschlussbericht zu dem UFOP-Projekt Nr. 524/141, 33 S .
Peter Weindl
Weideochsenmast zur Erzeugung und Vermarktung von Rindfleisch mit erhöhten Gehalten an Omega-3-Fettsäuren und konjugierten Linolsäuren („Functional Food“) (2013) Schlussbericht BMBF-Projekt, Förderkennzeichen: 170 90 X 10, TIB Hannover .
The objective of this study was to investigate the effects of reduced dietary AMEN and essential amino acid (EAA) concentrations on injuries, plumage damage, and plumage pigmentation in two female turkey strains. 216 day-old, non-beak-trimmed Auburn and B.U.T. 6 turkeys were assigned to three feeding groups and studied over four 4-week phases. Diets were formulated per phase with a 10 % isoenergetic AMEN reduction compared to breeder recommendations. Feeding groups differed in EAA levels, with methionine and lysine relative to breeder recommendations as follows: F1 (80/90/90/90 %), F2 (80/80/90/90 %), and F3 (70/80/90/90 %). Injuries, plumage damage, and plumage pigmentation were evaluated using a scoring system and a longitudinal visual assessment. Data, including growth performance, were collected during rearing (weeks 4 and 8) and fattening (weeks 12 and 16), at the end of each phase. B.U.T. 6 turkeys showed a higher prevalence of plumage damage, feather structure alterations, and skin injuries compared to Auburn turkeys (P < 0.001). A reduction in EAA by up to 30 % (F3) resulted in increased skin injuries, plumage damage, alterations in wing feather structure, and depigmentation (P ≤ 0.010). An interaction between genotype and feeding was observed (P = 0.048), with the increase in animals showing altered feather structure in F2 and F3 compared to F1 being more pronounced in Auburn than in B.U.T. 6. While pecking injuries and plumage damage increased with age (P ≤ 0.019), feather structure alterations and depigmentation decreased with age (P < 0.001) and higher EAA supply levels, suggesting these alterations are reversible. This study highlights the crucial role of dietary EAA in maintaining plumage and skin condition in female turkeys. Reducing EAA levels by up to 30 % resulted in more pronounced effects, with wing feathers proving to be a useful longitudinal tool to assess amino acid status in turkeys. However, reducing EAA levels by 20 % during rearing maintained final growth performance without adverse effects on injuries, plumage, or pigmentation, but EAA reduction should be carefully monitored in practice.
This experiment investigated the effects of reducing dietary AMEN and essential amino acids (EAA) levels by 10 % and up to 30 %, respectively, on growth and slaughter performance of female slow-growing Auburn and fast-growing B.U.T. 6 turkeys. A total of 432 day-old hatchlings were raised at two locations over four four-week phases until 16 weeks of age. Animals were allocated to three feeding strategies with graded EAA levels, featuring strongest reductions during rearing and lower reductions during fattening compared to breeding company recommendations. After rearing indoors in poultry houses (week 8), the turkeys were assigned to two housing systems during fattening (weeks 9–16): poultry indoor housing and mobile housing with free-range access.B.U.T. 6 turkeys exhibited higher final body weights, total concentrate feed intake and consistently lower concentrate feed conversion ratio compared to Auburn turkeys (P ≤ 0.001). B.U.T. 6 birds had higher proportions of dressing, thighs, and drumsticks (P ≤ 0.007), whereas breast meat and abdominal fat proportion did not differ (P ≥ 0.858). When comparing a 30 % with a 20 % EAA reduction during rearing, the stronger reduction decreased final body weights, slaughter weights and dressing percentages (P ≤ 0.048), but not valuable cuts (P ≥ 0.077). However, final body weights of both feeding strategies remained high and matched the breeding company's conventional targets, indicating that both turkey strains can sustain growth potential despite AMEN and EAA restrictions. Housing turkeys with free-range access led to lower final body weights (P < 0.001) with the same total concentrate feed intake (P = 0.831) compared to those kept solely indoors, resulting in a higher feed conversion ratio (P < 0.001). This underscores the challenges associated with environmental conditions, as fattening occurred from October to December. However, free-range access increased breast meat and reduced abdominal fat proportions (P < 0.001), indicating potential benefits.
Lucerne is a very interesting feed for sows in organic pig production because it is rich in the essential amino acids lysine and methionine. The amount of protein can be increased through innovative harvesting methods as the so-called lucerne plant tips can be separated from the rest of the plant (crude protein: 274 g/kg dry matter (DM)). The present feeding trial evaluated the use of hot-air dried lucerne plant tips as a protein source for lactating sows in an organic farming system. Twenty-two lactating sows were fed either a control concentrate mixture or a test concentrate mixture containing lucerne plant tips (20%, based on fresh matter) during an average lactation period of 45.8 days. The daily feed intake, the growth rate of the piglets, and the change in backfat were measured. Due to the sows’ high initial backfat thickness (control group: 26.7 mm and lucerne group: 29.3 mm, p = 0.22), the daily feed intake was low in both groups. Additionally, the test group showed significantly lower energy intake (control group: 81.4 MJ ME/d; lucerne group: 65.8 MJ ME/d, p < 0.0001), indicating the need for acclimatization to lucerne plant tips in the gestation period. Nevertheless, a lower growth rate of the piglets was not detected (control group: 268 g and lucerne group 254 g, p = 0.33). On day 42, the piglets’ individual weight for the control and lucerne groups was 13.6 kg and 13.3 kg, respectively (p = 0.623). This underlines the resilience of lactating sows.
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Theresa Hautzinger,
Elke Rauch,
Peter Weindl,
Gesa Busch,
Eva Zeiler
In addition to the whole white-flowered pea, pea protein concentrates and pea hulls can be utilized in animal nutrition. In particular, fermentable carbohydrates and fibers in peas and pea products seem to contribute to intestinal health and health maintenance in poultry, due to their prebiotic effect on the intestinal microbiota. This study was conducted to investigate the effect of different proportions of peas (P), pea protein concentrate (PPC) and pea hulls (PH) in complete feed mixtures for broilers on growth and slaughter performance as well as intestinal microbiota. Twenty diets with varying proportions of peas and pea products were fed to male broilers from d 1 to 34. Short-chain fatty acid analysis and 16S sequencing were used to examine the ileal and cecal microbiota for selected feeding groups. Overall, the attained fattening performances were at a high level. The use of peas and pea products did not affect body weight on d 34 or slaughter performance. The use of pea hulls up to 6% resulted in the highest overall feed intake and overall feed conversion ratio (P < 0.001). Microbiota composition and ileal bacterial metabolites were unchanged. Microbiota changes in the cecum were found between dietary treatments for several subdominant microbial genera that preferentially ferment carbohydrates. This study has shown that peas and pea products are well-suited as feedstuffs for feeding broilers when used appropriately. Furthermore, the intestinal microbiota responded with an increased abundance of nonpathogenic genera that may help maintain intestinal microbial homeostasis.
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Peter Weindl,
Sebastian Born,
P. Hofmann,
Christian Lambertz,
Benjamin Schade
In dem Projekt Regrobra wird untersucht, wie man einem Brand bestmöglich vorbeugen kann, welches Verhalten die Tiere im Brandfall zeigen und wie sie schnellstmöglich evakuiert werden können.
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Peter Weindl
Austausch nur zum Teil machbar (2014) DGS Magazin 09/2014 , S. 29-32.
Möglichkeiten und Grenzen des Einsatzes regionaler Eiweißfuttermittel als Ersatz für importiertes Sojaextraktionsschrot (2016) Themen zur Tierernährung Vilomix-Fachtagung 2015/2016 .
Peter Weindl
Der Futtermittelreport - Strategien zum verminderten Einsatz von aus Übersee importierten Sojaerzeugnissen in der Geflügelfütterung in Deutschland (2013) WWF Deutschland .
Peter Weindl
Der Futtermittelreport II - Strategien zum verminderten Einsatz von aus Übersee importierten Sojaerzeugnissen in der Geflügelfütterung - Berichte aus den Praxisversuchen (2013) WWF Deutschland , S. 3-42.
Conference contributions
Philipp Hofmann,
Peter Weindl,
Christian Lambertz,
Ruben Schreiter
Ruben Schreiter,
Peter Weindl,
Philipp Hofmann,
Christian Lambertz
Effekte einer Aminosäurenreduktion auf Gefiederverluste, Hautverletzungen und die Federpigmentierung ökologisch gefütterter, weiblicher Mastputen (2025) 17. Tagung Schweine- und Geflügelernährung, 18. - 20. November 2025, Lutherstadt Wittenberg; Tagungsband. .
Philipp Hofmann,
Peter Weindl,
Petra Nicole Weindl
Damit künftig mehr Mastkälber aus der Öko-Milchviehhaltung in der Bio-Wertschöpfungskette bleiben, braucht es die Anstrengungen aller Akteure. So lässt sich die Abschlussveranstaltung zum dreijährigen Projekt „mehrWert – Öko-Milch und Fleisch“ zusammenfassen. Deshalb stimmte man sich nun an der Hochschule Weihenstephan-Triesdorf auf zukünftige Projekte ein und erarbeitete in gemeinsamen Workshops erste Beiträge dafür. Das durch das StMELF geförderte Projekt wurde von der LFL, der Schweisfurth Stiftung und der HWST unter der Leitung von Prof. Eva Zeiler durchgeführt. Nach der Analyse der Ist-Situation suchte man Verbesserungsmöglichkeiten.
Die kuhgebundene Kälberaufzucht, bei der das Kalb nach der Geburt einige Zeit bei der Mutter oder einer Amme Milch säugt, trifft auf ein wachsendes Interesse von Milchviehhalter:innen. Einige …
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