Detailed whole ‐body nutrient analysis identifies differences in feeding ecology between related fish species: The case of Orestias native Andean killifish in Lake Titicaca
This study compared the detailed whole-body nutrient composition (macronutrients, minerals, fatty acids and amino acids) of two omnivorous nativesOrestias killifish from Lake Titicaca (Orestias agassizii andOrestias luteus, Valenciennes), the largest lake in the Andes, as an indirect tool to understand differences in their feeding ecology. Although both species are usually described as omnivorous fish, both have amphipods (Hyalella spp) as their main food source. Our results showed that both killifish had a comparable macronutrient composition, and the mineral concentrations of Mg, P and Ca (reflecting bony structures) dif...
Source: Journal of Animal Physiology and Animal Nutrition - May 19, 2023 Category: Zoology Authors: Erick Loayza,
Arturo Mu ñoz‐Saravia,
Marleen De Troch,
Wouter H. Hendriks,
Geert P. J. Janssens Tags: ORIGINAL ARTICLE Source Type: research
Influence of high ‐ and low‐fermentable dietary fibres in sows' diet on the colostrum potential against Clostridioides difficile toxin‐induced effects in IPEC‐J2 cells
AbstractSow colostrum has been reported to protect the IPEC-J2 cells and piglet colon tissues from detrimental effect ofClostridioides difficile toxins. Since dietary fibre can influence the colostrum composition in sows, we hypothesised that it can also differentially affect the colostrum potential againstC. difficile toxin-induced effects in IPEC-J2. IPEC-J2 were incubated with colostrum from sows fed either high-fermentable sugar beet pulp (SBP) or low-fermentable lignocellulose (LNC) fibres and in combination with the toxins and analysed by trans-epithelial electrical resistance (TEER) and cell viability using propidiu...
Source: Journal of Animal Physiology and Animal Nutrition - May 19, 2023 Category: Zoology Authors: Łukasz Grześkowiak,
Wilfried Vahjen,
Jürgen Zentek Tags: SHORT COMMUNICATION Source Type: research
Blidingia sp. extracts improve intestinal health and reduce diarrhoea in weanling piglets
AbstractBlidingia sp. is a prominent fouling green macroalga and we previously found that extracts fromBlidingia sp. alleviated intestinal inflammation in mice challenged with lipopolysaccharides. However, whether these extracts are effective in weanling piglets remains unknown. In the present study,Blidingia sp. extracts were supplemented in the diet and their effects on growth performance, incidence of diarrhoea and intestinal function in weanling piglets were explored. The results showed that diets supplemented with 0.1% or 0.5%Blidingia sp. extract significantly increased average daily body weight gain and feed intake ...
Source: Journal of Animal Physiology and Animal Nutrition - May 19, 2023 Category: Zoology Authors: Zongling Wang,
Boxin Zeng,
Haoran Xue,
Chunyan Liu,
Wei Song Tags: ORIGINAL ARTICLE Source Type: research
This cave-dwelling eel is going blind, by losing one eye at a time
Scientists exploring underwater caves have discovered a new species of moray eel that appears to be adapting to its unique habitat—by losing its eyes. Some specimens of
Uropterygius cyamommatus
have left eyes covered by skin, whereas others retain eyes on both sides of their heads.
The researchers used baited traps to lure the morays to the surface of inland caves that connect to the ocean on Australia’s Christmas Island and the Philippines’s Panglao Island. The fish are the first known species of moray to inhabit these formations, known as anchialine caves. Two of the four specimens the scientists co...
Source: Science of Aging Knowledge Environment - May 18, 2023 Category: Geriatrics Source Type: research
Use of former food products in dairy buffalo nutrition: In vitro and in vivo evaluation
AbstractA feeding strategy that maintains high content of functional molecules in buffalo milk has been verified by givingSorghum vulgare as green fodder, but it is not available all year round. The aim of this study was to evaluate the inclusion of former food products (FFPs) containing 87% biscuit meal (nonstructural carbohydrate: 60.1%; starch 14.7; crude protein 10.6), in the diet of buffaloes in terms of: (a) fermentation characteristics through gas production technique; (b) milk yield (MY) and quality; (c) content of some biomolecules and total antioxidant activity. The experiment was performed involving 50 buffalo...
Source: Journal of Animal Physiology and Animal Nutrition - May 18, 2023 Category: Zoology Authors: Gianluca Neglia,
Serena Calabr ò,
Alessio Cotticelli,
Angela Salzano,
Roberta Matera,
Alessandro Vastolo,
Nunzia D'Onofrio,
Andrea Giorgino,
Elisa Martino,
Maria L. Balestrieri,
Giuseppe Campanile Tags: ORIGINAL ARTICLE Source Type: research
Mechanistic Models of Trophic Interactions: Opportunities for Species Richness and Challenges for Modern Coexistence Theory
The American Naturalist, Ahead of Print. (Source: The American Naturalist)
Source: The American Naturalist - May 18, 2023 Category: Zoology Authors: Jurg W. Spaak Peter B. Adler Stephen P. Ellner Source Type: research
Comb jelly ancestor may have been first animal to branch from tree of life
The first single-celled organisms drifted at sea. Then, some 700 million to 800 million years ago, clusters of cells joined together to form Earth’s first multicellular animal. More recently, the animal family tree split into two branches. One lineage gave rise to all other animals on Earth, from brontosauruses to badgers. The other, dubbed “sister of all other animals,” continued its separate evolutionary journey. For more than a decade, scientists have debated which animals alive today hail from that earliest sister, fingering two phyla as the most likely candidates: sponges and comb jellies.
A study publishe...
Source: Science of Aging Knowledge Environment - May 17, 2023 Category: Geriatrics Source Type: research
Vincristine-associated total antioxidant and oxidant status of ovaries and in vitro nuclear oocyte maturation in dogs with canine transmissible venereal tumor
Anim Reprod Sci. 2023 May 15;253:107260. doi: 10.1016/j.anireprosci.2023.107260. Online ahead of print.ABSTRACTThe aim of this study is to evaluate the effects of scheduled vincristine sulfate therapy on canine oocyte quality and nuclear oocyte maturation, associated with total antioxidant and oxidant status of ovaries and Anti-Müllerian Hormone (AMH) concentrations in dogs with Canine Transmissible Venereal Tumor (CTVT). Six bitches suffering from CTVT and six healthy bitches were included in the study. Hemogram was carried out weekly. AMH measurements and ovariohysterectomy operations were performed after the terminatio...
Source: Animal Reproduction Science - May 17, 2023 Category: Zoology Authors: G R Özalp B Üstüner G Avci Ö Bari M M Y ılmaz B Denk A Aktar Source Type: research
Vincristine-associated total antioxidant and oxidant status of ovaries and in vitro nuclear oocyte maturation in dogs with canine transmissible venereal tumor
Anim Reprod Sci. 2023 May 15;253:107260. doi: 10.1016/j.anireprosci.2023.107260. Online ahead of print.ABSTRACTThe aim of this study is to evaluate the effects of scheduled vincristine sulfate therapy on canine oocyte quality and nuclear oocyte maturation, associated with total antioxidant and oxidant status of ovaries and Anti-Müllerian Hormone (AMH) concentrations in dogs with Canine Transmissible Venereal Tumor (CTVT). Six bitches suffering from CTVT and six healthy bitches were included in the study. Hemogram was carried out weekly. AMH measurements and ovariohysterectomy operations were performed after the terminatio...
Source: Animal Reproduction Science - May 17, 2023 Category: Zoology Authors: G R Özalp B Üstüner G Avci Ö Bari M M Y ılmaz B Denk A Aktar Source Type: research
Vincristine-associated total antioxidant and oxidant status of ovaries and in vitro nuclear oocyte maturation in dogs with canine transmissible venereal tumor
Anim Reprod Sci. 2023 May 15;253:107260. doi: 10.1016/j.anireprosci.2023.107260. Online ahead of print.ABSTRACTThe aim of this study is to evaluate the effects of scheduled vincristine sulfate therapy on canine oocyte quality and nuclear oocyte maturation, associated with total antioxidant and oxidant status of ovaries and Anti-Müllerian Hormone (AMH) concentrations in dogs with Canine Transmissible Venereal Tumor (CTVT). Six bitches suffering from CTVT and six healthy bitches were included in the study. Hemogram was carried out weekly. AMH measurements and ovariohysterectomy operations were performed after the terminatio...
Source: Animal Reproduction Science - May 17, 2023 Category: Zoology Authors: G R Özalp B Üstüner G Avci Ö Bari M M Y ılmaz B Denk A Aktar Source Type: research
Southern Europe is becoming climatically favourable for African birds: anticipating the establishment of a new species
This study aimed to determine if the... (Source: Frontiers in Zoology)
Source: Frontiers in Zoology - May 17, 2023 Category: Zoology Authors: Sandro L ópez-Ramírez, Darío Chamorro, Raimundo Real and Antonio-Román Muñoz Tags: Research Source Type: research
Contractile function of fasting and digesting broad-snouted caiman (Caiman latirostris)
Canadian Journal of Zoology, Ahead of Print. Feeding regimes are a critical process to ensure survival and reproduction, which modulate several behavioral and physiological patterns of ectotherms, especially cardiovascular adjustments. However, crocodilian myocardial contractile function after food intake remains understudied. We investigated the importance of ventricular myocardial contractility during digestion in the broad-snouted caiman, Caiman latirostris Daudin, 1801. Isometric ventricle preparations and Ca2+-handling protein expression were used to investigate the effects of prolonged fasting (30 days) and feeding (...
Source: Canadian Journal of Zoology - May 17, 2023 Category: Zoology Authors: Andr é Guelli Lopes Diana Amaral Monteiro Eliton da Silva Vasconcelos Ana L úcia Kalinin Source Type: research
Female mate choice in the fat-tailed dunnart (Sminthopsis crassicaudata) influences offspring sex ratio, but not fecundity
Brittney P. Gill, Amy M. Edwards, Marissa L. Parrott, Emily L. Scicluna, Kylie A. Robert (Source: Australian Journal of Zoology)
Source: Australian Journal of Zoology - May 17, 2023 Category: Zoology Authors: Brittney P. Gill Amy M. Edwards Marissa L. Parrott Emily L. Scicluna Kylie A. Robert Source Type: research
Influence of age, breeding state and approach direction on sensitivity to human gaze: a field study on Azure-winged magpies
Anim Cogn. 2023 May 16. doi: 10.1007/s10071-023-01786-x. Online ahead of print.ABSTRACTIn predator-prey interactions, various factors affect the prey's perception of risk and decision to flee. Gaze sensitivity, the ability to react to the presence, direction, or movement of the head and eyes, has been reported in many birds. However, few studies have focussed on variation in sensitivity to human gaze in relation to other risks and potential breeding costs. Here, we studied the influence of human gaze on the escape behaviour of Azure-winged magpies (Cyanopica cyanus) and investigated the effects of breeding state (breeding ...
Source: Animal Cognition - May 16, 2023 Category: Zoology Authors: Fan Yu Xu Wang Yumeng Zhao Zhongqiu Li Source Type: research
Influence of age, breeding state and approach direction on sensitivity to human gaze: a field study on Azure-winged magpies
Anim Cogn. 2023 May 16. doi: 10.1007/s10071-023-01786-x. Online ahead of print.ABSTRACTIn predator-prey interactions, various factors affect the prey's perception of risk and decision to flee. Gaze sensitivity, the ability to react to the presence, direction, or movement of the head and eyes, has been reported in many birds. However, few studies have focussed on variation in sensitivity to human gaze in relation to other risks and potential breeding costs. Here, we studied the influence of human gaze on the escape behaviour of Azure-winged magpies (Cyanopica cyanus) and investigated the effects of breeding state (breeding ...
Source: Animal Cognition - May 16, 2023 Category: Zoology Authors: Fan Yu Xu Wang Yumeng Zhao Zhongqiu Li Source Type: research
