Results 61 to 70 of about 294,374 (349)

Evaluation of Some Litter Traits and Heritability Estimates of Nigerian Indigenous Pigs [PDF]

open access: yes, 2013
Cumulative litter records of 1494 progeny from 257 litters produced by 30 sires and 87 sows of Nigerian indigenous pigs (NIP) from the Swine Unit of Obafemi Awolowo University Teaching and Research Farm for a period of fourteen years (1977-1990) were ...
Ajayi, B.A, Akinokun, J.O
core  

PSMA8‐Containing 20S Proteasome Regulates Spermiogenesis and Male Fertility

open access: yesAdvanced Science, EarlyView.
PSMA8 assembles s20S proteasome that degrades specific substrates in elongating spermatids. Degradation of s20S‐substrates activates translation of FXR1‐target mRNAs, which are essential for mitochondrial sheath formation and sperm morphogenesis.
Huiwen Cao   +7 more
wiley   +1 more source

No evidence for a trade-off between reproductive investment and immunity in a rodent. [PDF]

open access: yesPLoS ONE, 2012
Life history theory assumes there are trade-offs between competing functions such as reproduction and immunity. Although well studied in birds, studies of the trade-offs between reproduction and immunity in small mammals are scarce.
Yan-Chao Xu, Deng-Bao Yang, De-Hua Wang
doaj   +1 more source

Development of a new grading system to assess the foster performance of lactating sows

open access: yesAnimal, 2022
Increasing litter size has created the need for more sophisticated, accurate, and welfare-oriented systems for assessing the foster performance of lactating sows.
L.S. Trost   +7 more
doaj   +1 more source

An evaluation of two grassland-based systems of mid-season prime lamb production using prolific ewes of two genotypes [PDF]

open access: yes, 2009
peer-reviewedA 4-year study was undertaken to evaluate the effects of two contrasting management systems [year-round grazing (YRG) and normal seasonal grazing followed by indoor feeding during winter (GWF)] on performance of mid-season lambing ewes. On
Flanagan, S.   +2 more
core  

IGFBP5 Restores Endometrial Receptivity and Rescues Implantation Failure in Polycystic Ovary Syndrome

open access: yesAdvanced Science, EarlyView.
Impaired endometrial receptivity contributes to the poor pregnancy outcomes in women with PCOS. The authors found that decreased endometrial IL‐22 levels and disrupted STAT3‐IGFBP5 signaling pathway contributed to impaired endometrial receptivity. Supplementation with IL‐22 or IGFBP5 exerts a protective effect on implantation failure in PCOS‐like mice,
Baoying Liao   +13 more
wiley   +1 more source

Genetic parameter estimates for litter traits in Jakhrana breed of Indian goat

open access: yesReproduction and Breeding, 2023
The litter size and litter weight are the most important indicators of growth production system in goats as they are directly related to the survival and growth of the kids.
Yogesh C. Bangar   +2 more
doaj   +1 more source

Epidemics on random intersection graphs [PDF]

open access: yes, 2014
In this paper we consider a model for the spread of a stochastic SIR (Susceptible $\to$ Infectious $\to$ Recovered) epidemic on a network of individuals described by a random intersection graph.
Ball, Frank G.   +2 more
core   +4 more sources

An Activity‐Dependent NEPAS–PTX3 Axis Links Neurovascular and Myelin Deficits to Cognitive Impairment

open access: yesAdvanced Science, EarlyView.
An activity‐dependent pathway links prefrontal circuit hypoactivity to cognitive impairment. Reduced PVA–mPFC activity upregulates NEPAS, which suppresses PTX3 secretion, leading to impaired angiogenesis, myelin deficits, and memory decline. Rescue is achieved by NEPAS knockdown or chemogenetic circuit activation.
Boya Hu   +11 more
wiley   +1 more source

Piglet mortality in organic herds [PDF]

open access: yes, 2010
Productive performance of organic pig farms is lower compared to conventional farms, but only very few data exist. Better knowledge of the productivity of organic herds regarding litter size at birth, piglet losses around birth and during lactation, as ...
Bodicchio, David   +9 more
core  

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