Results 51 to 60 of about 2,329 (125)

Spatio‐Temporal Variation in Diet Among Age and Sex Cohorts of a Model Generalist Bird Species, the Great Tit Parus major: New Insights Revealed by DNA Metabarcoding

Ecology and Evolution, Volume 15, Issue 7, July 2025.
Identifying the sources of intraspecific dietary variation is central to understanding how populations adapt to environmental variation, and yet these sources are poorly understood in a key model species in avian ecology, the great tit. Here we use DNA metabarcoding to describe the diet of great tits at an unprecedented level of detail and reveal ...
J. R. Coomes, J. P. Cuff, M. S. Reichert, G. L. Davidson, W. O. C. Symondson, J. L. Quinn   +5 more
wiley   +1 more source

Níveis de metionina + cistina total para frangos de corte de 22 a 42 dias de idade mantidos em ambiente termoneutro Levels of total methionine + cystine for 22-to-42-day-old broilers kept under thermoneutral environment

Revista Brasileira de Zootecnia, 2007
O experimento foi realizado para determinar a exigência de metionina + cistina (met + cis) para frangos de corte dos 22 aos 42 dias de idade mantidos em ambiente termoneutro (23,5ºC).
Adhemar Rodrigues de Oliveira Neto, Rita Flávia Miranda de Oliveira, Juarez Lopes Donzele, Sergio Luiz de Toledo Barreto, Roberta Gomes Marçal Vieira Vaz, Eliane Gasparino   +5 more
doaj   +1 more source

Evaluating Cassava Starch Residue as a Maize Substitute in Broiler Chicken Diets

Food Science &Nutrition, Volume 13, Issue 6, June 2025.
The study explored the use of cassava starch residue (CSR) as a maize substitute in broiler chicken diets. Excitingly, CSR can replace maize up to 30%, enhancing feed efficiency without negative effects. However, higher CSR levels led to poorer growth performance, making 30% the sweet spot for optimal results. This innovative approach not only offers a
Agnes Osei‐Adjei, Jacob Alhassan Hamidu, Benjamin Adjei‐Mensah, Priscilla Nyameyie Ama Hanson, Goodman Kantanka Sarfo, Armstrong Donkoh   +5 more
wiley   +1 more source

Pathological and immunohistochemical studies of lymphoid leukosis in pigeons in Egypt

Open Veterinary Journal
Background: Pigeon leukosis is primarily caused by avian leukosis virus subgroup A (ALV-A). It infects and transforms lymphoid cells, leading to the development of tumors in various lymphoid tissues and other organs especially the liver.
Abdelmenem Ahmed Elmeligy, Ali A. Ghania, Ahmed Fotouh   +2 more
doaj   +1 more source

Interactive Effects of Temperature Acclimation and Dietary Fatty Acids on Metabolic Rate and Body Composition of Zebra Finches (Taeniopygia guttata)

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 343, Issue 5, Page 617-628, June 2025.
ABSTRACT Climate change is contributing to geographic range shifts in many bird species, with possible exposure to novel diets. How individuals respond physiologically across chronic time frames to the interacting effects of diet and environmental temperature has been little explored.
Michael J. Campbell, Gabriela F. Mastromonaco, Gary Burness   +2 more
wiley   +1 more source

The effects of acetylsalicylic acid on performance, carcass traits, breast meat quality and white striping muscle defects in broiler chickens

Journal of the Science of Food and Agriculture, Volume 105, Issue 8, Page 4338-4348, June 2025.
Abstract BACKGROUND This research aims to reduce white striping muscle defects induced by vascular inflammation and hypoxia using the anti‐inflammatory, antiplatelet and anti‐atherothrombotic properties of acetylsalicylic acid (ASA). To this end, the effects of different doses (0.3, 0.6, 1, 3 and 6 g L−1) of ASA added to drinking water at 24–48 days on
Gülşah Güngören, Ulku Gulcihan Simsek, Alper Güngören, Mehmet Çiftçi, Hatice Eröksüz, Burak Karabulut, Yasin Baykalir, Mücahit Kahraman, İsmail Demircioğlu, Şermin Top   +9 more
wiley   +1 more source

The Effect of Dietary Oil Level and Multi‐Enzyme Supplementation on Performance, Bone Mechanical Properties and Mineral Contents, Intestine Morphology and Immune Response in Broiler Chickens

Veterinary Medicine and Science, Volume 11, Issue 3, May 2025.
Dietary supplementation by vegetable oil (VO) plays an important role in lipid metabolism and its body deposition. Lower liver relative weight of broiler chickens fed a diet supplying 12% of ME requirement through VO suggests that VO could cause an inhibition of lipogenesis. ABSTRACT Background Supplementing broiler diets with non‐starch polysaccharide
Avisa Akhavan Khaleghi, Abolghasem Golian, Hassan Nasiri Moghaddam, Heydar Zarghi   +3 more
wiley   +1 more source

Responses of Broiler Chickens to Diets of Different Nutritional Planes Supplemented With or Without Organic Acids

Veterinary Medicine and Science, Volume 11, Issue 3, May 2025.
The study evaluated the response of broilers to diets of different nutritional planes supplemented with or without organic acids. Two hundred and forty broiler chicks were used. Different diet types were supplemented with 4, 6 and 8 g/kg organic acid. Organic acid supplementation had beneficial impacts on broilers.
Kolade M. Ogunola, A. V. Jegede, Adeboye O. Fafiolu, Oyegunle E. Oke   +3 more
wiley   +1 more source

Waterfowl Endozoochory: Traits Drive Plant–Bird Dispersal Interactions in North America

Freshwater Biology, Volume 70, Issue 4, April 2025.
ABSTRACT Plant biogeography and ongoing changes in plant distributions are influenced by long‐distance dispersal (LDD) of seeds, and migratory waterfowl (Anatidae: Ducks, geese and swans) are particularly important for the dispersal of plants in and around wetlands through gut passage (endozoochory).
Bia A. Almeida, Giliandro G. Silva, Mihai Costea, Leonardo Maltchik, Susan E. W. De La Cruz, John Y. Takekawa, Andy J. Green   +6 more
wiley   +1 more source

Safety and efficacy of a feed additive consisting of guanidinoacetic acid (Creamino®) for turkeys for fattening and reared for breeding (Alzchem Trostberg GmbH)

EFSA Journal, Volume 23, Issue 4, April 2025.
Abstract Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of guanidinoacetic acid (GAA) when used as zootechnical additive in feed and water for drinking for turkeys for fattening and turkeys reared for ...
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Roberto Edoardo Villa, Giovanna Azimonti, Eleftherios Bonos, Henrik Christensen, Mojca Durjava, Birgit Dusemund, Ronette Gehring, Boet Glandorf, Maryline Kouba, Marta López‐Alonso, Francesca Marcon, Carlo Nebbia, Alena Pechová, Miguel Prieto‐Maradona, Ilen Röhe, Katerina Theodoridou, Jaume Galobart, Jordi Ortuño Casanova, Maria Vittoria Vettori, Jordi Tarrés‐Call, Alberto Navarro‐Villa   +21 more
wiley   +1 more source