Only a few years ago, the poultry industry began to face recent abnormality in breast meat, known as wooden breast, which frequently overlaps with white striping. This study aimed assess impact of on quality traits meat. For this purpose, 32 normal (NRM), (WB), and white-striped (WB/WS) Pectoralis major muscles were selected from same flock heavy broilers (males, Ross 708, weighing around 3.7 kg) deboning area commercial processing plant at 3 h postmortem used histology, proximate (moisture,...

During the past few years, there has been an increasing prevalence of broiler breast muscle abnormalities, such as white striping (WS) and wooden conditions. More recently, a new muscular abnormality termed spaghetti meat (SM) because altered structural integrity Pectoralis major often associated with WS emerged. Thus, this study aimed at evaluating effects SM conditions, occurring alone or combined within same P. muscle, on quality traits histology. In two replications, 96 muscles were...

White Striping and Wooden Breast (WS/WB) are abnormalities increasingly occurring in the fillets of high breast yield growth rate chicken hybrids. These defects lead to consistent economic losses for poultry meat industry, as affected broiler present an impaired visual appearance that negatively affects consumers' acceptability. Previous studies have highlighted a severely damaged muscle, showing profound inflammation, fibrosis, lipidosis. The study investigated differentially expressed...

A trial was conducted to evaluate the influence of myodegeneration pectoralis major muscle on quality traits and chemical composition breast meat heavy-size male broilers. For this purpose, a total 72 muscles were randomly collected from broilers farmed under homogeneous conditions graded into three categories (mild, n = 22; moderate, 33; severe, 17) based presence abnormal fibers (giant fibers, with hyaline degeneration, damaged and/or necrotic fibers) evaluated by histological...

Finding insect meals as alternative sources of poultry feedstuffs is a recent research topic; therefore, the present study aimed to evaluate effects defatted black soldier fly (Hermetia illucens L., HI) larvae meal in broiler chicken diets on carcass characteristics and meat quality parameters, proximate composition, fatty acid profile heavy metal content breast meat. Four dietary treatments were designed: control diet (HI0) three experimental (HI5, HI10 HI15), corresponding 50, 100 150 g/kg...

This study examines the effects of dietary supplementation with Lactobacillus acidophilus D2/CSL (CECT 4529) (LA) on productive performances, incidence foot pad dermatitis and caecum microbioma in broiler chickens. A total 1,100 one-day old male Ross 308 chicks were divided into 2 groups 16 replicates 25 birds each reared from 1-41 d. One group was fed a basal diet (CON) other same supplemented LA. Caecum contents collected 4 selected at day one 5 end rearing period. Then, they submitted to...

The aim of the experiment was to assess effects 2 dietary levels trace minerals (TM) zinc, manganese, and copper either from organic (OTM) or inorganic (ITM) sources on broiler performance, carcass traits, intramuscular collagen (IMC) properties, occurrence hock burns (HB), foot pad dermatitis (FPD), femoral tibia head necrosis, breast muscle abnormalities (white striping, WS; wooden breast, WB; poor cohesion, PC). A total 3,600 one-day-old male chicks were randomly assigned one 4 treatments...

Because of the proposed cardioprotective benefits n-3 fatty acids and vitamin E, a trial was carried out to investigate possibility enriching eggs with acid E added hen's diet. One hundred ninety-two Hy-Line Brown hens, 39-wk-old, were divided into eight groups: four groups received basal diet supplemented 3% lard doses dl-alpha-tocopheryl acetate (0, 50, 100, 200 ppm), whereas diets other fish oil same E. The performances hens egg weights not affected either by type lipid supplement or...

Abstract 1. A survey was carried out to assess some welfare indicators in broilers reared by the largest poultry companies Italy, determine whether they accord with European proposal COM (2005) 221 final. 2. Productive traits, carcase injuries and foot dermatitis were recorded from 279 640 broiler chickens winter summer 5 farms representative of Italian production system. 3. The densities currently used Italy are accordance proposal, which recommends that kept at a density lower than 30 32...

Broiler chickens have been selected for their rapid growth rate as well high carcass yields, with particular regard to the breast, and reared in intensive systems at stocking density ranging from 30 40 kg live weight/m2. These conditions lead a worsening of welfare status birds. In Europe specific directive protection broiler has recently approved whereas Italy there is not yet any regulation. The EU lays down minimum rules kept meat production gives indications on management practices focus...

The characteristics of meat quality, chemical and fatty acid composition, from fast-growing (FG) medium-growing (MG) meat-type slow-growing (SG) egg-type chickens reared under organic conditions were compared. Three-hundred sixty 1-day-old male chicks, equally divided into three experimental groups represented by strains (FG: Cobb 700, MG: Naked neck Kabir SG: Brown Classic Lohman) housed poultry houses with outdoor pasture availability 10 m(2)/bird located in the same Research Centre...

A trial was conducted to compare muscle traits and meat quality characteristics of the pectoralis in 2 chicken commercial hybrids having standard (SBY) high breast yield (HBY), respectively. total 2,124 one-day-old male chicks, equally divided into experimental groups represented by strains (SBY HBY), were grown using homogenous conditions fed same diets until reaching live weight 4.2 kg at 53 55 d for SBY HBY groups, Thirty-six birds per each genotype randomly selected, their major muscles...

An experiment was carried out to evaluate productive performance, nutrient digestibility and carcass quality traits of broiler chickens fed diets supplemented with an exogenous emulsifier based on lysophospholipids prepared by enzymatic conversion soy lecithin. One thousand seven-hundred fifty-five one-day-old male Ross 308 chicks were randomly divided into three experimental groups nine replications each: control group (CON) a corn–soybean basal diet, two CON diet constant (1 kg/ton) or...

Due to the important functions of arginine in poultry, it should be questioned whether currently adopted dietary Arg:Lys ratios are sufficient meet modern broiler requirement arginine. The present study aimed, therefore, evaluate effects supplementation L-arginine a commercial diet on productive performance, breast meat quality attributes, incidence and severity muscle myopathies foot pad dermatitis (FPD), plasma metabolomics profile fast-growing broilers.A total 1,170 1-day-old Ross 308...

The aim of this study was to investigate the variability and relationships between some egg physical (egg weight, width, length, shape index, surface area) eggshell parameters (weight percentage, thickness, breaking strength, L*, a*, b* values) during entire laying hen cycle. A total 8,000 eggs collected every 5 wk, from 30 81 wk age (10 samplings 400 eggs/house), in 2 identical poultry houses equipped with enriched cages. For statistical analysis, ANOVA, Bivariate Correlation, Principal...

In Western countries the dietary guidance emphasizes need to decrease intake of saturated fatty acids and replace them with polyunsaturated (PUFA), particularly long chain n-3 PUFA (LC-PUFA). The production poultry meat having a lower fat content healthier acid (FA) profile is hot topic for industry, possibility identify genotypes able produce higher LC-PUFA deserves attention. aims present study were evidence in chicken (i) genotype-related different expression desaturating enzymes delta-6...

SummaryBroiler chicken production is expected to increase significantly in the next decades satisfy poultry meat demand of a growing world population. In this scenario, one most important challenges for industry enhance bird productivity while remaining economically and environmentally sustainable. Feeding represents major cost raising broiler chickens has implications environmental impact, either directly or indirectly. Therefore, improving capacity converting ingested feed into body...

Heat stress (HS) dramatically impairs the growth performance of broiler chickens, mainly as a consequence reduced feed intake due to loss appetite. This study was aimed at evaluating alterations induced by chronic HS conditions on morphological and morphometric features gastrointestinal (GI) tract expression some enteroendocrine cells (EECs) involved in regulation chickens. Three hundred male chickens (Ross 308) were divided into two experimental groups raised either thermoneutral...

Abstract Background Arginine is an essential amino acid for chickens and feeding diets with arginine beyond the recommended levels has been shown to influence growth performance of broiler in a positive way. Nonetheless, further research required understand how supplementation above widely adopted dosages affects metabolism intestinal health broilers. Therefore, this study was designed assess effects (i.e., total lysine ratio 1.20 instead 1.06–1.08 by breeding company) on explore its impacts...

The influence of the season and market class broiler chickens on breast meat quality traits was determined a total 18 flocks reared processed under commercial conditions. According to Italian poultry production system following classes birds were considered: light size (1.2 kg carcass weight; n = 90) medium (1.8 90), represented by females slaughtered at 40 52 d old, respectively, whereas heavy 57-d-old male broilers (2.4 90). After slaughter, 15 carcasses per flock (n 270) randomly...

This study aims to compare the physico-chemical properties of eggs (weight, eggshell breaking strength, Haugh index, yolk colour, lipid, cholesterol, protein, ash and dry matter) laid either by hens reared according organic method or caged kept in conventional system. More than 1,400 have been analysed at beginning, middle end laying cycle farms. The egg obtained from system were lighter (64.4 vs 66.2 g) being yolk, albumen weights statistically lower comparison with those produced...

Abstract 1. The objective was to compare the effect of two litter types (wheat straw and wood shavings) different rearing conditions (Treated Control) on welfare indicators, broiler performance, carcase injuries, particularly hock foot pad dermatitis (FPD), characteristics meat quality. 2. Treated were characterised by a low stocking density (11 birds/m2), short photoperiod (16 h light: 8 dark) large amount (3 4·5 kg/m2, respectively, for wheat or shavings). Control high (14 long (23 light:1...