Results 81 to 90 of about 300,369 (281)

The flexible, the stereotyped and the in‐between: putting together the combinatory tool use origins hypothesis

open access: yesBiological Reviews, EarlyView.
ABSTRACT Tool use research has long made the distinction between tool using that is considered learned and flexible, and that which appears to be instinctive and stereotyped. However, animals with an inherited tool use specialisation can exhibit flexibility, while tool use that is spontaneously innovated can be limited in its expression and facilitated
Jennifer A. D. Colbourne   +1 more
wiley   +1 more source

HAEMATOLOGICAL STUDIES ON THE GUINEA FOWL (Nurmida meleagris Pallas): 1. EFFECT OF AGE, SEX ,k ND TIME OF BLEEDING OF THE HAEMATOLOGICAL VALUES OF GUINEA FOWLS.

open access: yes, 2021
The blood profile and the effects of age, sex and time of bleeding on the parameters were investigated in a 2x 2x 2 factorial experiment using twenty four guinea fowls (Numida meleagrs paths).
B. Orji, G. Okeke, A. O. Akunjiyiba
semanticscholar   +1 more source

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

open access: yesBiological Reviews, EarlyView.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz   +6 more
wiley   +1 more source

Macroscopic embryonic development of Guinea fowl compared to other domestic bird species

open access: yesRevista Brasileira de Zootecnia, 2019
Since few studies have addressed the embryonic development of Guinea fowl (Numida meleagris), the objective of the present study was to evaluate its embryonic development in the Cerrado region of Brazil and compare the results to published descriptions ...
Itallo Conrado Sousa de Araújo   +3 more
doaj   +1 more source

Tuning of feedforward control enables stable muscle force-length dynamics after loss of autogenic proprioceptive feedback

open access: yeseLife, 2020
Animals must integrate feedforward, feedback and intrinsic mechanical control mechanisms to maintain stable locomotion. Recent studies of guinea fowl (Numida meleagris) revealed that the distal leg muscles rapidly modulate force and work output to ...
Joanne C Gordon   +3 more
doaj   +1 more source

Swing-leg trajectory of running guinea fowl suggests task-level priority of force regulation rather than disturbance rejection. [PDF]

open access: yesPLoS ONE, 2014
To achieve robust and stable legged locomotion in uneven terrain, animals must effectively coordinate limb swing and stance phases, which involve distinct yet coupled dynamics.
Yvonne Blum   +5 more
doaj   +1 more source

TRANSMISSIBLE ENTERITIS IN YOUNG GUINEA FOWL [PDF]

open access: yesAnnales de Zootechnie, 1975
This disease occurring in intensive rearing conditions causes the death of young birds between the jth and the 28th day of age. The highest mortality is between the 5th and the 15 th day of age. It is characterized by enteritis and nephritis. On the crop of young animals it is possible to see, in some clinical observations typical candidosis lesions. A
Tournut, J.   +5 more
openaire   +2 more sources

Anatomical and biomechanical traits of broiler chickens across ontogeny. Part II. Body segment inertial properties and muscle architecture of the pelvic limb [PDF]

open access: yes, 2014
In broiler chickens, genetic success for desired production traits is often shadowed by welfare concerns related to musculoskeletal health. Whilst these concerns are clear, a viable solution is still elusive.
Codd, J   +5 more
core   +3 more sources

HAEMATOLOGICAL STUDIES (IN THE GUINEA FOWL (Numida rneteagris (Pallas): H. EFFECT OF AGE, SEX AND TIME OF BLEEDING ON PROTEIN AND ELECTROLYTE LEVELS IN BLOOD SERUM OF GUINEA FOWLS.

open access: yes, 2021
The blood serum protein and electrolyte levels as well as the effects of age, sex and time of bleeding on these were investigated in a 2x2x2 factorial experiment using twenty four mature guinea fowls(Numedia melagris pallas).
B. Orji, G. Okeke, O. Ojo
semanticscholar   +1 more source

Environmental and geomorphological drivers of frog diversity on islands worldwide

open access: yesEcography, EarlyView.
Island biogeography models primarily rely on island physical features and isolation to explain their biodiversity patterns. While newer models have incorporated functional traits to understand plant distribution, few empirical studies have tried to disentangle geometric constraints from niche‐based processes to predict multiple diversity facets of ...
Raoni Rebouças   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy