Nutritional and environmental conditions influence broiler flock performance. Besides these factors, other less-well-understood factors, such as incubating egg characteristics, affect the embryonic life of chicks. This study demonstrated that egg storage depressed egg albumen Haugh units (HU) and chick quality; these effects of storage were greater in egg and chicks from old breeders. Absolute ...

BACKGROUND The 2005-06 avian influenza (AI) epidemic in Dogubayazit and nearby provinces in Eastern Turkey resulted in 12 confirmed human cases and four deaths and the culling of millions of poultry. The aim of this study was to determine the behaviour and perception about AI and the knowledge of breeders whose poultry were culled during the epidemic and to assess the outbreak control efforts w...

A field trial was run with the objective to determine the effect of 6 ppm canthaxanthin in ROSS breeders feed (throught supplementation with 60 ppm CAROPHYLL® Red) on the anti-oxidant status of their progeny. The 1 day chicks have very variable antioxidant status and could partly explain differences on their performances. The canthaxanthin is a carotenoid studied for its antioxidant activity. T...

Abstract The aim of the study was to characterize the level of knowledge and practices among slaughterhouse and small municipal abattoirs workers and breeders in the Namibe province of Angola. A cross sectional questionnaire based survey was conducted during 2012 on 323 livestock workers working with cattle, including 131 slaughterhouse and butchers workers and 192 breeders. The chi-square test...

This activity aims to provide information about FMD breeders in Picisan Village, Sendang District, Tulungagung Regency. village is a with the majority of population as breeders. The observation results showed that there were cows infected but only few had been vaccinated. method implementing this interactive socialization. was carried out by inviting speaker from Animal Husbandry Department and...

We empirically assess the relationship between population growth rate (lambda, a parameter central to ecology) and effective population size (N(e), a key parameter in evolutionary biology). Recent theoretical and numerical studies indicate that in semelparous species with variable age at maturity (such as Pacific salmon, many monocarpic plants, and various other species), differences in mean re...

OBJECTIVE Previous research has found that conscientiousness has positive associations with preventative health-related behaviors and self-perceived health, but little is known about the links between changes in these variables over time. In the present study, we examined how levels and changes in conscientiousness were linked to levels and changes in both preventative health-related behaviors ...

Effects of low-density broiler breeder diets on offspring performance and mortality were studied using 2,100 female and 210 male Cobb 500 breeders. Breeder treatments involved 4 experimental groups and a control group with normal density diets (ND, 2,600 kcal of AME/kg during rearing and 2,800 kcal of AME/kg during laying). In treatment 2, nutrient densities were decreased by 12% (LD12) and 11%...

Alternative reproductive tactics (ARTs) are discrete reproductive phenotypes governed by decision rules called strategies. ARTs are fixed for life in species with alternative strategies, while tactic expression is plastic in species with a single strategy. ARTs have been investigated in males of many species, but few studies have tested whether the same theoretical framework applies in females....

In long-lived species only a fraction of a population breeds at a given time. Non-breeders can represent more than half of adult individuals, calling in doubt the relevance of estimating demographic parameters from the sole breeders. Here we demonstrate the importance of considering observable non-breeders to estimate reliable demographic traits: survival, return, breeding, hatching and fledgin...