Effect of Production Systems and Dietary Interventions on Growth Performance, Morphometrics, Physiological Response and Behaviour of the Naked Neck Chickens

The present study evaluated performance, physiological response and economics of commercial fast growing (CFG), commercial slow growing (CSG), and Rhode Island Red (RIR) chickens under intensive and free-range rearing environments. After 21 days of rearing under the same intensive environment 240 birds from each strain were subjected to free-range and intensive rearing until they were 56 days old. Each treatment was replicated six times with 20 birds in each replicate. Body surface and cloacal temperatures, respiration and heart rates, feed intake, bodyweight and weight gain, feed conversion efficiency, growth efficiency, and liveability were recorded. Significant differences among strains were detected in physiological response and growth performance (except liveability). Rearing environment also caused significant differences in physiological parameters (except body surface temperature) and growth performance (except liveability). Significant interactions of the strains and production systems were detected. The CFG strain grew most rapidly under the intensive system with differences between strains being reduced in the free-range system. The RSG and CSG strains had similar respiration rates under the two production systems but differed significantly from each other. However, the CFG strain had a significantly elevated respiration rate in the free-range system. Total input cost of rearing CFG under the intensive system was highest ($3.54) among the treatments, whereas CSG under a free-range environment generated the highest profit ($0.37 per bird). In conclusion, rearing CSG under free range was the most economic farming strategy in today’s scenario.Keywords: economics, fast-growing, free range, growth, intensive system, physiology, slow-growing rural chickens

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Growth Performance and Meat Yield Characteristics of Native Naked Neck and Their Crosses with Exotic Chicken

Journal of Applied Animal Research ◽

10.1080/09712119.1999.9706266 ◽

1999 ◽

Vol 16 (1) ◽

pp. 81-86 ◽

Cited By ~ 6

Author(s):

M. E. Haque ◽

M. A.R. Howlider ◽

Q. M.E. Huque

Keyword(s):

Growth Performance ◽

Meat Yield ◽

Naked Neck

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Effects of ractopamine hydrochloride on growth performance, carcass characteristics, and physiological response to different handling techniques1,2

Journal of Animal Science ◽

10.2527/jas.2016.0936 ◽

2017 ◽

Vol 95 (5) ◽

pp. 1977-1992 ◽

Cited By ~ 3

Author(s):

J. A. Hagenmaier ◽

C. D. Reinhardt ◽

M. J. Ritter ◽

M. S. Calvo-Lorenzo ◽

G. J. Vogel ◽

...

Keyword(s):

Growth Performance ◽

Physiological Response ◽

Carcass Characteristics ◽

Ractopamine Hydrochloride

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

South African Journal of Animal Science ◽

10.4314/sajas.v51i2.13 ◽

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.

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Nigerian Fulani ecotype chickens - I – Growth performance under two production systems

Nigerian Journal of Animal Production ◽

10.51791/njap.v46i3.2554 ◽

2019 ◽

Vol 46 (3) ◽

pp. 1-9

Author(s):

A. R. Sanusi ◽

S. O. Oseni

Keyword(s):

Growth Performance ◽

Production System ◽

Production Systems ◽

Statistical Significance ◽

Average Daily Gain ◽

Litter Production ◽

Poultry Production ◽

Smallholder Farming ◽

Significant Interaction Effect ◽

Significant Difference

The rearing of indigenous chickens is an integral part of the smallholder farming systems in developing countries, where they are kept by the rural poor to satisfy multiple functions Thus, the growth performance of Nigerian Fulani ecotype chicken (NFEC) under intensive and pastured poultry production systems was evaluated. Two hundred, day-old chicks of Nigerian Fulani ecotype chicken (NFEC) were obtained. The chickens were separated randomly to intensive and pastured poultry production systems at 12 weeks of age. Data on body weight ® were taken weekly from day-old to 20 weeks. Data were analyzed using PROC GLM of SAS at statistical significance level of P<0.05. Results showed significant effect of sex of chicken th th from the 10 to the 20 week of age (P<0.05). Significant interaction effect was observed between sex and production system at weeks 16 and 18 (P<0.05) when the male chickens under the intensive production system outpaced their male counterparts in the pastured poultry. Average daily gain for the period of 20 weeks was 6.83g and 9.21g for female and male chickens, respectively. Weight gain pattern across weeks was not uniform. There was no significant difference in the growth rate in the two production systems (P>0.05). The study revealed that little disparity exists in growth performance of NFEC under the pastured and deep-litter production systems.

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Growth performance and physiological response in the halophyte Lycium barbarum grown at salt-affected soil

Annals of Applied Biology ◽

10.1111/j.1744-7348.2006.00092.x ◽

2006 ◽

Vol 149 (3) ◽

pp. 263-269 ◽

Cited By ~ 42

Author(s):

Y. Wei ◽

X. Xu ◽

H. Tao ◽

P. Wang

Keyword(s):

Growth Performance ◽

Physiological Response ◽

Lycium Barbarum ◽

Salt Affected Soil

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Effects of Dietary Forage Proportion on Feed Intake, Growth Performance, Nutrient Digestibility, and Enteric Methane Emissions of Holstein Heifers at Various Growth Stages

Animals ◽

10.3390/ani9100725 ◽

2019 ◽

Vol 9 (10) ◽

pp. 725 ◽

Cited By ~ 1

Author(s):

Lifeng Dong ◽

Binchang Li ◽

Qiyu Diao

Keyword(s):

Growth Performance ◽

Feed Intake ◽

Linear Prediction ◽

Production Systems ◽

Nutrient Digestibility ◽

Accurate Estimation ◽

Average Weight ◽

Growth Stages ◽

Ch4 Emissions ◽

Enteric Methane

Enteric methane (CH4) emissions from young ruminants contribute to a substantial proportion of atmospheric CH4 accumulation. Development of emission inventory and mitigation approaches needs accurate estimation of individual emission from animals under various physiological conditions and production systems. This research investigated the effect of different dietary concentrate contents on feed intake, growth performance, nutrient digestibility and CH4 emissions of heifers at various stages, and also developed linear or non-linear prediction equations using data measured by sulphur hexafluoride tracer technique. Increasing dietary concentrate contents increased feed intake and growth rate, enhanced nutrient digestibility, and reduced enteric CH4 emissions. Heifers at the age of 9, 12, and 15 months with an average weight of 267.7, 342.1, and 418.6 kg produced 105.2, 137.4, and 209.4 g/day of CH4, and have an average value of CH4 energy per gross energy intake (Ym) 0.054, 0.064, 0.0667, respectively. Equations relating CH4 emission values with animal and feed characteristics were developed with high determination coefficients for heifers at different growth stages. Dietary concentrate contents had significant influence on overall performance of heifers. These data can be used to develop regional or national emission inventories and mitigation approaches for heifers under various production regimes in China.

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