Welfare of broiler chickens in Brazilian free-range versus intensive indoor production systems

2021 ◽  
pp. 1-13
Author(s):  
Elaine Cristina de Oliveira sans ◽  
Fabiano Dahlke ◽  
Juliana Freitas Federici ◽  
Frank Andre Maurice Tuyttens ◽  
Carla Forte Maiolino Molento
Keyword(s):  
Broiler Chickens ◽  
Production Systems ◽  
Free Range

scholarly journals Effects of sex and genotype on performance and yield characteristics of free range broiler chickens

2013 ◽  
Vol 65 (5) ◽  
pp. 1483-1490 ◽  
Author(s):  
C.C. Del Castilho ◽  
T.T Santos ◽  
C.A.F. Rodrigues ◽  
R.A. Torres Filho
Keyword(s):  
Weight Gain ◽  
Experimental Design ◽  
Soybean Meal ◽  
Broiler Chickens ◽  
Production Systems ◽  
Feed Conversion ◽  
Free Range ◽  
Feeding Program ◽  
Slow Growing ◽  
Better Than

The purpose of this work was to evaluate the effect of genotype and sex on the performance characteristics (weight gain, feed conversion and livability) and yields (carcass, breast and legs) of six free-range genotypes: Pesadão Vermelho (GEN1), Carijó (GEN2), Pescoço Pelado 1 (GEN3), Pescoço Pelado 2 (GEN4), Pescoço Pelado 3 (GEN5) and Pescoço Pelado 4 (GEN6). A total of 1584 sexed one day old chicks (792 males and 792 females) were housed in 48 pens, 33 birds per pen. The experimental design was a completely randomized factorial 2 x 6 (six genotypes and two sexes) design, with four replicates each. Diets were based on corn and soybean meal (no animal protein) provided in a feeding program in four phases: pre-starter (1 to 21 days), starter (22 to 42 days), growth (43 to 77 days) and finisher (78 to 91 days). Feed intake, feed conversion and livability were measured at 21, 42, 77 and 91 days of age. There was no genotype x sex interaction. The effect of sex was observed in all ages regarding weight gain, feed conversion (except at 21 days) and yields. For all these characteristics, males performed better than females, except in breast yield, which was higher in females. For the livability and feed conversion at 21 days no effect of sex was found. The effect of genotype was observed only in carcass and breast yields. The fast (GEN1) and intermediate (GEN2, GEN5 and GEN6) growing genotypes showed higher weight gain than the slow growing genotypes (GEN4 and GEN3). Carcass and breast yields of naked neck genotypes (GEN3, GEN4, GEN5 and GEN6) did not differ among themselves, and were higher than the Carijó genotype (GEN2) and are therefore recommended for production systems that sell industrialized birds.

scholarly journals PRODUCTIVE RESPONSES FROM BROILER CHICKENS RAISED IN DIFFERENT COMMERCIAL PRODUCTION SYSTEMS - PART I: FUZZY MODELING

2019 ◽  
Vol 39 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Dian Lourençoni ◽  
Tadayuki Yanagi Junior ◽  
Paulo G. de Abreu ◽  
Alessandro T. Campos ◽  
Silvia de N. M. Yanagi
Keyword(s):  
Broiler Chickens ◽  
Production Systems ◽  
Fuzzy Modeling ◽  
Commercial Production

scholarly journals Pretreatment with probiotics ameliorate gut health and necrotic enteritis in broiler chickens, a substitute to antibiotics

AMB Express ◽  
2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Danish Sharafat Rajput ◽  
Dong Zeng ◽  
Abdul Khalique ◽  
Samia Sharafat Rajput ◽  
Hesong Wang ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Production Systems ◽  
Economic Losses ◽  
Necrotic Enteritis ◽  
Poultry Production ◽  
Gut Health ◽  
Growth Promoters ◽  
Broiler Performance ◽  
Antibiotic Growth Promoters ◽  
Microbial Strains

AbstractNecrotic enteritis (NE) is being considered as one of the most important intestinal diseases in the recent poultry production systems, which causes huge economic losses globally. NE is caused by Clostridium perfringens, a pathogenic bacterium, and normal resident of the intestinal microflora of healthy broiler chickens. Gastrointestinal tract (GIT) of broiler chicken is considered as the most integral part of pathogen’s entrance, their production and disease prevention. Interaction between C. perfringens and other pathogens such as Escherichia coli and Salmonella present in the small intestine may contribute to the development of NE in broiler chickens. The antibiotic therapy was used to treat the NE; however European Union has imposed a strict ban due to the negative implications of drug resistance. Moreover, antibiotic growth promoters cause adverse effects on human health as results of withdrawal of antibiotic residues in the chicken meat. After restriction on use of antibiotics, numerous studies have been carried out to investigate the alternatives to antibiotics for controlling NE. Thus, possible alternatives to prevent NE are bio-therapeutic agents (Probiotics), prebiotics, organic acids and essential oils which help in nutrients digestion, immunity enhancement and overall broiler performance. Recently, probiotics are extensively used alternatives to antibiotics for improving host health status and making them efficient in production. The aim of review is to describe a replacement to antibiotics by using different microbial strains as probiotics such as bacteria and yeasts etc. having bacteriostatic properties which inhibit growth of pathogens and neutralize the toxins by different modes of action.

Behavioral traits of artificially and naturally hatched geese in intensive and free-range production systems

2021 ◽  
Vol 236 ◽  
pp. 105273
Author(s):  
Mehmet Akif Boz ◽  
Musa Sarıca ◽  
Umut Sami Yamak ◽  
Kadir Erensoy
Keyword(s):  
Production Systems ◽  
Behavioral Traits ◽  
Free Range

The Costs of Production in Systems Which Differ in Their Perceived Effects on Animal Welfare. 1. Eggs and Broilers

1997 ◽  
Vol 26 (3) ◽  
pp. 165-171
Author(s):  
John Hill ◽  
Carol Asby ◽  
Ian Sturgess
Keyword(s):  
Animal Welfare ◽  
Production Systems ◽  
Free Range ◽  
Broiler Production ◽  
Perceived Effects ◽  
Costs Of Production ◽  
Using Data ◽  
The Uk ◽  
Equipment Costs

This paper considers what animal welfare is and the importance of animal welfare to the consumer. It also considers how different production systems are perceived in terms of kindness to animals, and outlines a method of assessing the costs of animal welfare by analysing the costs of intensive egg and broiler production and comparing them with costs of free-range production by using data from the UK. The extra costs associated with free-range production are due to higher labour, feed, building and equipment costs.

scholarly journals Effects of production system and feeding regimen on carcass and meat quality traits of Naked Neck chicken

2021 ◽  
Vol 51 (2) ◽  
pp. 250-261
Author(s):  
E. Bughio ◽  
J. Hussain ◽  
A. Mahmud ◽  
A. Khalique
Keyword(s):  
Meat Quality ◽  
Production System ◽  
Production Systems ◽  
Liver Weight ◽  
Kitchen Waste ◽  
Naked Neck ◽  
Commercial Diet ◽  
Free Range ◽  
Commercial Feed ◽  
Feeding Regimen

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.

scholarly journals Role of Pigeons in the Transmission of Avian Avulavirus (Newcastle Disease-Genotype VIId) to Chickens

Animals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 338 ◽  
Author(s):  
Hany F. Ellakany ◽  
Ahmed R. Elbestawy ◽  
Hatem S. Abd El-Hamid ◽  
Rasha E. Zedan ◽  
Ahmed R. Gado ◽  
...  
Keyword(s):  
Newcastle Disease ◽  
Post Infection ◽  
Broiler Chickens ◽  
Mortality Rates ◽  
Fatal Disease ◽  
Free Range ◽  
Viral Shedding ◽  
Commercial Broiler

Newcastle disease is an acute fatal disease of poultry. The aim of this study was to determine the dynamics of the transmission of avian avulavirus (velogenic viscerotropic Newcastle disease-genotype VIId) from either intramuscularly (IM)- or intranasally (IN) infected 8-week-old Egyptian Baladi pigeons in contact with commercial Arbor Acres broiler chickens (4 weeks of age). The mortality of IM infected chickens and pigeons was 10/10 for chickens and 8/15 for pigeons, while the mortality of IN infected chickens and pigeons was 7/10 for chickens and only 1/15 for pigeons. The concentration of viral shedding in the oropharynx was higher than that in the cloaca for both IN and IM infected pigeons. Pigeons infected IN continued shedding the virus from the oropharynx from the 4th day post-infection (dpi) up to the 16th dpi, while IM infected pigeons stopped oropharyngeal shedding at the 11th dpi. Chickens in contact with infected pigeons developed severe respiratory, digestive and nervous signs. The mortality rates in chickens in contact with IM and IN infected pigeons were 2/5 and 3/5, respectively. Chickens in contact with IM infected pigeons showed higher viral shedding titres in both the oropharynx and cloaca than chickens in contact with pigeons infected IN. In conclusion, free-range pigeons are considered an efficient carrier and transmitter of NDV-VIId compared to commercial broiler chickens raised in open houses.

scholarly journals Probiotic and prebiotic utilization in diets for free-range broiler chickens

2004 ◽  
Vol 6 (2) ◽  
pp. 99-104 ◽  
Author(s):  
K Pelícia ◽  
AA Mendes ◽  
ESPB Saldanha ◽  
CC Pizzolante ◽  
SE Takahashi ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Free Range

Interactions between broiler chickens, soil parameters and short rotation coppice willow in a free-range system

2018 ◽  
Vol 43 (9) ◽  
pp. 1009-1030 ◽  
Author(s):  
Lisanne M. Stadig ◽  
Frank A. M. Tuyttens ◽  
T. Bas Rodenburg ◽  
Bart Vandecasteele ◽  
Bart Ampe ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Short Rotation Coppice ◽  
Soil Parameters ◽  
Free Range ◽  
Short Rotation
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