Results 81 to 90 of about 102,068 (289)

Why we age

open access: yesBiological Reviews, EarlyView.
ABSTRACT Three categories of explanations exist for why we age: mechanistic theories, which omit reference to evolutionary forces; weakening force of selection theories, which posit that barriers exist that prevent evolutionary forces from optimising fitness in ageing; and optimisation theories, which posit that evolutionary forces actually select for ...
Michael S. Ringel
wiley   +1 more source

High-grain diet and the inclusion of residual frying oil in the feeding of lambs

open access: yesCiência Animal Brasileira, 2023
In animal production, a large part of financial resources is destined to animal feed, so the use of low-cost diets with maximum production efficiency is crucial. The present study evaluated the effects of a high-grain diet and the use of residual frying
Nayane Valente Batista   +7 more
doaj  

Characteristics & cutability of farmed rusa deer (Cervus timorensis) carcasses for marketing of vension. [PDF]

open access: yes, 2009
Rusa deer are the only viable commercial tropical deer species for farming in the tropics because of their hardiness, adaptability and prolific characteristics.
Ismail, Dahlan
core  

Undernutrition and stage of gestation influence fetal adipose tissue gene expression [PDF]

open access: yes, 2015
Funded by the Scottish Government’s Rural and Environment Science and Analytical Services Division (RESAS), including the Strategic Partnership for Animal Science Excellence (SPASE) and the U.S. National Institutes of Health (HD045784).
Adam, Clare L   +7 more
core   +1 more source

Mule carcass characteristics and meat quality

open access: yes, 2023
Donkey carcass parameters and donkey meat quality character¬istics have been determined in previous studies, while mule carcass and meat quality traits have scarcely been evaluated. The aim of the present study was to compare the carcass data and meat quality parameters obtained from 10 mules slaughtered, respectively, at an age of 5 ± 1 years and at ...
Paolo, Polidori   +2 more
openaire   +1 more source

Injuries in deep time: interpreting competitive behaviours in extinct reptiles via palaeopathology

open access: yesBiological Reviews, EarlyView.
ABSTRACT For over a century, palaeopathology has been used as a tool for understanding evolution, disease in past communities and populations, and to interpret behaviour of extinct taxa. Physical traumas in particular have frequently been the justification for interpretations about aggressive and even competitive behaviours in extinct taxa.
Maximilian Scott   +3 more
wiley   +1 more source

Carcass characteristics of broilers fed enzyme complex

open access: yesBiotechnology in Animal Husbandry, 2015
Enzyme supplementation in diets based on corn and soybean meal can improve the productive performance of broilers. Thus, we aimed to evaluate the effect of the inclusion of different levels of an enzyme complex consisting of phytase, protease, xylanase, ?-glucanase, cellulase, amylase, and pectinase, for diets based on corn and soybean meal,
Dalólio F.S.   +4 more
openaire   +3 more sources

A review of the historic and present ecological role of aquatic and shoreline wood, from forest to deep sea

open access: yesBiological Reviews, EarlyView.
ABSTRACT The ecology of forests, their losses, and terrestrial wood decomposition dynamics have been intensively studied and reviewed. In the aquatic realm, reviews have concentrated on large wood (LW) in rivers and the transition from freshwater to marine environments in the Pacific Northwest of North America. However, a comprehensive global synthesis
Jon Dickson   +9 more
wiley   +1 more source

Estimating the Economic Value of Specific Characteristics Associated with Angus Bulls Sold at Auction [PDF]

open access: yes
The genetic traits of a purebred bull convey the reproductive and economic value to buyers. This study examines and compares the value of actual production weights (birth, weaning, and yearling weight), production expected progeny differences (EPDs ...
Dhuyvetter, Kevin C.   +3 more
core   +1 more source

Taro leaf and stylo forage as protein sources for pigs in Laos [PDF]

open access: yes, 2012
Existing forage plants may have applications as alternative protein resources for pigs in smallholder farming systems. This thesis examined the effect of harvesting/defoliation interval on the yield and chemical composition of taro leaves and stylo ...
Kaensombath, Lampheuy
core  

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