Evaluating productive performance, meat quality and oxidation products of Italian White breed rabbits under free-range and cage rearing system

To evaluate the effect of a production system and feeding regimen on meat quality attributes of Naked Neck chickens, a total of 150 cockerels at 18 weeks old (1625 ± 70 g) were collected from 10 treatment groups with five replicates of three birds. The factorial arrangement of treatments consisted of two production systems (intensive and free-range) and five nutritional regimens, namely 100% commercial feed; 75% commercial feed plus 25% kitchen waste; 50% commercial feed plus 50% kitchen waste; 25% commercial feed plus 75% kitchen waste; and 100% kitchen waste. Carcass traits, meat quality, and meat organoleptic were found to differ significantly among production systems, feeding regimens, and their interaction. Higher liver weight was observed in birds reared under an intensive system. Higher gizzard weight was noted in birds fed with 100% kitchen waste, whereas lower gizzard weight was observed in birds fed the commercial diet. The meat from cockerels fed with 75% kitchen waste was most yellow, whereas the meat from the birds fed with 100% kitchen waste was least yellow. At two hours after slaughter, pH of the meat was highest in birds fed 50% kitchen waste and lowest in birds fed 100% kitchen waste. The interaction of production system and feeding regimen was significant for overall acceptability score. In conclusion, Naked Neck chickens performed equally well under intensive and free-range systems, irrespective of the level of kitchen waste that they were fed.

Download Full-text

Effect of the housing system (free-range vs. open air cages) on growth performance, carcass and meat quality and antioxidant capacity of rabbits

Meat Science ◽

10.1016/j.meatsci.2018.06.017 ◽

2018 ◽

Vol 145 ◽

pp. 137-143 ◽

Cited By ~ 5

Author(s):

Rosa Loponte ◽

Giulia Secci ◽

Simone Mancini ◽

Fulvia Bovera ◽

Valentina Panettieri ◽

...

Keyword(s):

Antioxidant Capacity ◽

Growth Performance ◽

Meat Quality ◽

Housing System ◽

Free Range

Download Full-text

Effect of castration on productive performance, carcass characteristics and meat quality of Iberian pig females reared under intensive management systems

Livestock Science ◽

10.1016/j.livsci.2008.11.001 ◽

2009 ◽

Vol 123 (2-3) ◽

pp. 147-153 ◽

Cited By ~ 15

Author(s):

M.P. Serrano ◽

D.G. Valencia ◽

A. Fuentetaja ◽

R. Lázaro ◽

G.G. Mateos

Keyword(s):

Meat Quality ◽

Carcass Characteristics ◽

Management Systems ◽

Intensive Management ◽

Productive Performance ◽

Iberian Pig

Download Full-text

Effect of Silybum marianum herb on the productive performance, carcass traits and meat quality of growing rabbits

Livestock Science ◽

10.1016/j.livsci.2016.10.012 ◽

2016 ◽

Vol 194 ◽

pp. 31-36 ◽

Cited By ~ 3

Author(s):

M. Cullere ◽

A. Dalle Zotte ◽

C. Celia ◽

A.L. Renteria-Monterrubio ◽

Zs. Gerencsér ◽

...

Keyword(s):

Meat Quality ◽

Carcass Traits ◽

Productive Performance ◽

Silybum Marianum

Download Full-text

Performance and Meat Quality of Dual-Purpose Cockerels of Dominant Genotype Reared on Pasture

Animals ◽

10.3390/ani10030387 ◽

2020 ◽

Vol 10 (3) ◽

pp. 387 ◽

Cited By ~ 2

Author(s):

Michaela Englmaierová ◽

Miloš Skřivan ◽

Tomáš Taubner ◽

Věra Skřivanová

Keyword(s):

Fatty Acids ◽

Meat Quality ◽

Ethical Problem ◽

Fibre Diameter ◽

Stocking Density ◽

Feed Conversion ◽

Cross Sectional ◽

Dual Purpose ◽

Free Range ◽

Herbage Intake

The culling of layer cockerels due to economic inefficiency is an ethical problem. Organic or free-range fattening of these cockerels or dual-purpose genotypes breeding is a possible solution to this problem. The aim of the study was to assess the differences in performance and meat quality characteristics in dual-purpose cockerels Dominant of three genotypes (Dominant Sussex D 104, Dominant Brown D 102 and Dominant Tinted D 723, 100 cockerels per genotype) with access to pasture. The cockerels were housed in mobile boxes on the pasture herbage from the 50th to 77th day of age (stocking density: 0.108 m2/bird). The highest body weight on the 77th day of age (p < 0.001) and the nonsignificantly lowest feed conversion was achieved by Dominant Brown D 102 cockerels (1842 g and 2.79, respectively). Non-significantly higher pasture herbage intake on the 70th day of age was recorded in genotype Dominant Brown D 102 (7.41 g dry matter (DM)/bird/day) and Dominant Tinted D 723 (7.52 g DM/bird/day). The pasture herbage contained 56.9 mg/kg DM α-tocopherol, 170.3 mg/kg DM zeaxanthin and 175.0 mg/kg DM lutein and had a favourable n6/n3 ratio (0.26). The boiled meat of cockerels Dominant Tinted D723 showed the highest tenderness based on both the sensory evaluation (p = 0.022) and the value of shear force (p = 0.049). This corresponds with a higher (p < 0.001) cross-sectional area and muscle fibre diameter in these chickens. The highest content of n3 fatty acids (eicosapentaenoic, clupanodonic and docosahexaenoic acids) in breast meat were found in Dominant Sussex D104 chickens (p < 0.001). In contrast, a significantly higher α-tocopherol content (p < 0.001) and higher oxidative stability (p = 0.012) were found in Dominant Brown D102 (4.52 mg/kg and 0.282 mg/kg) and Dominant Tinted D 723 chickens (4.64 mg/kg and 0.273 mg/kg) in comparison with the Dominant Sussex D104 genotype (3.44 mg/kg and 0.313 mg/kg). The values of the atherogenic and thrombogenic indexes were the lowest (p < 0.001) in meat from Dominant Brown D102 chickens. Moreover, a lower cholesterol content (p < 0.001) was recorded from the genotypes Dominant Brown D102 (396 mg/kg) and Dominant Tinted D723 (306 mg/kg) chickens, contrary to the Dominant Sussex D104 cockerels (441 mg/kg). It can be concluded that cockerels Dominant Brown D102 are a suitable genotype for free-range rearing due to higher performance and higher pasture herbage intake, which positively influences meat quality, whereas the meat of Dominant Sussex D104 cockerels shows higher amounts of n3 fatty acids and lower n6/n3 ratios.

Download Full-text