The effect of two rearing systems on productive performance and level of wellbeing in broilers reared up to day 46 was assessed. The birds were subjected to two treatments: (T1) traditional rearing (open drinkers, population density of 10.7 birds/m and infrared light bulbs as heating source), with 4 repetitions 2 of 6 birds each and (T2) modern rearing (closed drinkers, population density of 13...

This study aimed to investigate whether pre- and early postnatal experiences of rearing hens contribute to the ability to cope with infectious challenges at an older age. In a 2 × 2 factorial arrangement, 352 Lohmann Brown chicks were exposed to either suboptimal or optimized incubation plus hatch conditions, and to cage or enriched rearing from week 0 to 7 of age. After week 7 all rearing cond...

This paper exploits a unique ongoing experiment to analyze the effects of early rearing conditions on physical and mental health in a sample of rhesus monkeys (Macaca mulatta). We analyze the health records of 231 monkeys that were randomly allocated at birth across three rearing conditions: mother rearing, peer rearing, and surrogate peer rearing. We show that the lack of a secure attachment r...

The effect of outdoor rearing duration (75 v 50 days) and rearing system (outdoor v indoor based systems) of Iberian pigs on the chemical composition (fatty acid composition of fat and intramuscular fat, moisture, salt, pigment concentrations and water activity of lean meat), the instrumental colour (CIEL*a*b* system) and the sensory characteristics (descriptive analysis) of dry-cured hams were...

Although future production of dairy goats is influenced by kid-rearing practices, little known regarding which practices maximize kid growth, welfare, and success. The objectives this survey study were to (1) identify common rearing Canadian commercial goat farms evaluate their associations with 6 farm performance indicators (2) determine if could be grouped management style on the basis compar...

The combined effects of growth pattern (GP) and dietary CP level during rearing (2 to 22 wk of age) on body composition and performance were investigated in broiler breeder females from 0 to 40 wk of age. One-day-old pullets (n = 768) were randomly allotted to 48 pens according to 2 growth patterns (standard = SGP and high = HGP) and fed using 1 of 3 dietary CP levels (high = CPh, medium = CPm,...