Search Results - "Ruhnke, I."

Various bone parameters are positively correlated with hen body weight while range access has no beneficial effect on tibia health of free-range layers by Kolakshyapati, M., Flavel, R.J., Sibanda, T.Z., Schneider, D., Welch, M.C., Ruhnke, I.

“…The aim of this study was to determine if body weight or range use has a significant impact on bone health in commercial free-range laying hens, and to…”
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The association between range usage and tibial quality in commercial free-range laying hens by Sibanda, T. Z., Flavel, R., Kolakshyapati, M., Welch, M., Schneider, D., Ruhnke, I.

“…1. Bone tissue adapts continuously to metabolic calcium demands, as well as to external forces due to physical weight loading subject to hen movement. Limited…”
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Flock use of the range is associated with the use of different components of a multi-tier aviary system in commercial free-range laying hens by Sibanda, T. Z., Walkden-Brown, S. W., Kolakshyapati, M., Dawson, B., Schneider, D., Welch, M., Iqbal, Z., Cohen-Barnhouse, A., Morgan, N. K., Boshoff, J., Ruhnke, I.

“…1. The objective of this study was to investigate the association of using a multi-tier aviary system and access to range on flock uniformity in free-range…”
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Pasture, multi-enzymes, benzoic acid and essential oils positively influence performance, intestinal organ weight and egg quality in free-range laying hens by Iqbal, Z, Roberts, J, Perez-Maldonado, R A, Goodarzi Boroojeni, F, Swick, R A, Ruhnke, I

“…1. The objective of this study was to investigate the effect of range type, multi-enzyme applications, and a combination of benzoic acid (BA) and essential…”
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Performance, egg quality, and liver lipid reserves of free-range laying hens naturally infected with Ascaridia galli by Sharma, N, Hunt, P W, Hine, B C, Sharma, N K, Chung, A, Swick, R A, Ruhnke, I

“…ABSTRACT A study was conducted to determine the performance, egg quality, and liver lipid reserves of laying hens exposed to ranges contaminated with Ascaridia…”
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The effects of different thermal treatments and organic acid levels on nutrient digestibility in broilers by Goodarzi Boroojeni, F., Mader, A., Knorr, F., Ruhnke, I., Röhe, I., Hafeez, A., Männer, K., Zentek, J.

“…Poultry feed is a potential vector for pathogens. Heat processing and organic acid treatments may decontaminate feed and can affect bird performance as well as…”
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Effects of grinding method, particle size, and physical form of the diet on gastrointestinal morphology and jejunal glucose transport in laying hens by Röhe, I., Ruhnke, I., Knorr, F., Mader, A., Boroojeni, F. Goodarzi, Löwe, R., Zentek, J.

“…Several studies illustrated that the structure of feed, i.e., the particle size, particle-size distribution, and the physical form of the diet, affects the…”
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Effect of an artificial Ascaridia galli infection on egg production, immune response, and liver lipid reserve of free-range laying hens by Sharma, N, Hunt, P W, Hine, B C, McNally, J, Sharma, N K, Iqbal, Z, Normant, C, Andronicos, N M, Swick, R A, Ruhnke, I

“…Abstract This study was conducted to determine the effect of Ascaridia galli infection on free-range laying hens. Lohmann Brown laying hens (n = 200) at 17 wk…”
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The effects of different thermal treatments and organic acid levels in feed on microbial composition and activity in gastrointestinal tract of broilers by Goodarzi Boroojeni, F., Vahjen, W., Mader, A., Knorr, F., Ruhnke, I., Röhe, I., Hafeez, A., Villodre, C., Männer, K., Zentek, J.

“…Thermal treatments of feed and organic acids are known to affect the gastrointestinal microbiota in chickens. The present study evaluated the effect of…”
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Effect of feed grinding methods with and without expansion on prececal and total tract mineral digestibility as well as on interior and exterior egg quality in laying hens by Hafeez, A., Mader, A., Ruhnke, I., Männer, K., Zentek, J.

“…The grinding of cereals by various milling methods as well as thermal treatment of feed may influence mineral digestibility and egg quality. The present study…”
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Feed supplemented with organic acids does not affect starch digestibility, nor intestinal absorptive or secretory function in broiler chickens by Ruhnke, I, Röhe, I, Goodarzi Boroojeni, F, Knorr, F, Mader, A, Hafeez, A, Zentek, J

“…The current study aimed to determine the impact of acidified feed on apparent ileal starch digestibility, intestinal transport and barrier function and…”
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Implication of milling methods, thermal treatment, and particle size of feed in layers on mineral digestibility and retention of minerals in egg contents by Hafeez, A., Mader, A., Ruhnke, I., Röhe, I., Boroojeni, F. Goodarzi, Yousaf, M. S., Männer, K., Zentek, J.

“…Feed production with different milling methods, thermal treatment, and particle size may influence mineral digestibility and retention in eggs. The present…”
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Impact of thermal and organic acid treatment of feed on apparent ileal mineral absorption, tibial and liver mineral concentration, and tibia quality in broilers by Hafeez, A., Mader, A., Boroojeni, F. Goodarzi, Ruhnke, I., Röhe, I., Männer, K., Zentek, J.

“…Minerals play an important role for growth and bone stability in broilers. Thermal treatment and inclusion of organic acids in feed may affect the mineral…”
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