Analyzing Growth Curves of Turkeys Reared in Different Breeding Systems (Intensive and Free-Range) with some Nonlinear Models

Söğüt, Bünyamin; Çelik, Şenol; Ayaşan, Tugay; İnci, Hakan

doi:10.1590/1806-9061-2016-0263

Cited by 10 publications

(9 citation statements)

References 17 publications

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“…Results described in Table 1 clearly postulated significantly higher body weight in black colour male turkey even in first week of rearing compared to female turkey, suggesting that one can identify male or female poults even after 7 days of rearing by the observation of their body weight differences. In a recent published report by Sogut et al (2016), it was shown that male poults hatching weight (63.10g/poult) was significantly higher than that of the female (61.87g/poult). Further, they mentioned the significant differences in body weight at 2 nd week (male = 234.71g/bird, female = 224.75g/bird) and 4 th week (male = 687.14g/bird, female = 642.40g/bird) of age.…”

Section: Resultsmentioning

confidence: 94%

Early sex determination of Turkey by observation of differences in body weight between male and female

et al. 2021

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The present study was conducted to determine the early sex in turkeys by observation of the differences in body weight between male and female birds. A total of 30-day old black color unsexed poults having almost similar body weight at hatching were considered for the experimentation and housed at the Poultry Farm of Bangladesh Agricultural University, Mymensingh-2202, Bangladesh. All birds were reared up to 12 weeks of age under intensive management with supplementation of commercial broiler starter and grower feeds. Birds were reared under similar management conditions. Significantly higher (p<0.01) body weight was attained in male poults (104g/bird) than the female (90g/bird) at the end of 1st week of age. Similarly, at the end of 2nd week of age higher (p<0.01) body weight attained by male poults (198.31g/bird) than the female (162.13g/bird). At the end of 3rd weeks of age male poults attained higher (p<0.01) body weight (307.23g/bird) than the female (251.33g/bird). After 4 weeks of rearing, male turkeys attained significantly higher (p<0.01) live body weight (424.46g/bird) than the female turkeys (347.87g/bird). The weekly average body weight gains of male and female birds were 94.18g/bird and 76.5g/bird, respectively. Thus, the male and female birds were successfully identified on the basis of differences in their body weight. Weekly feed intake for both the male and female birds was also increased with their age. Up to 4 weeks of age, both the male and female poults consumed same amount of feed (753.46g/bird). The FCR of male and female poults differed non-significantly in 1st, 3rd and 4th week. On the contrary, in 2nd week of age the FCR of male poults (1.60) was significantly lower (p<0.01) than female (2.11). Survivability was 100% up to 4th week of age irrespective of sex of the poults. The birds were reared up to 12 weeks of age until to confirm their sex by observation of the phenotypic appearance. Results of the phenotypic observation of male and female birds correspondence hundred percent accuracy with the results obtained in body weight based differences between male and female birds. It is therefore concluded that farmers can identify male or female poults as early as first week of age on the basis of body weight differences. Progressive Agriculture 31 (3): 218-226, 2020

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Section: Resultsmentioning

confidence: 94%

Early sex determination of Turkey by observation of differences in body weight between male and female

et al. 2021

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“…Growth curves have been developed to compare species ( Anthony et al., 1991 ; Knížetová et al., 1995 ), where it was concluded that selection age for BW compared to their mature weight is critical. In turkey production, the Von Bertalanffy model was used to high coefficient of determination ( R 2 ) and Mean Square Error ( MSE ) when developing growth curves in different breeding systems ( Sogut et al., 2016 ). These grow curves are essential to determine feed requirements and live weight ( ŞENGÜL and Kiraz, 2005 ).…”

Section: Discussionmentioning

confidence: 99%

Performance and processing yield comparisons of Large White male turkeys by genetic lines, sources, and seasonal rearing

Flores

Grimes

2022

Poultry Science

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Large White male turkey genetic lines ( GL ) comparison in performance and processing yields under the same conditions are rare in the literature. Two rearing experiments ( EXP ) were conducted to accomplish 2 objectives. The first objective was to test the effects of poult source and genetic lines on performance and processing yields. The second objective was to extract season and growth patterns when comparing both EXP common treatments. In EXP 1, male poults from 5 different sources were randomly assigned to 48 concrete: litter-covered floor pens. In EXP 2, male poults from 7 different genetic lines were randomly assigned to 48 concrete: litter-covered floor pens. For both EXP, the experimental design was a completely randomized block design with a one-factor arrangement. Both EXP were placed in the same house with the same management and nutrition in two separate seasons of the same year. Bird performance and carcass processing yield were analyzed in SAS 9.4 or JMP 15.1 in a mixed model. In EXP 1 no significant difference in BW or processing yield was observed. However, a similar GL from a commercial hatchery had an improved feed conversion ratio ( FCR ) over the same GL sourced directly from the genetic company hatchery. In EXP 2, statistical differences were observed in performance and breast meat yield depending on the GL. A season effect was observed when comparing the two EXP. Birds raised in the fall season had a 2 kg BW increase, on average, over their spring counterparts. This difference in BW can also be observed in a statistically higher breast meat yield by the birds raised in the fall over the ones raised in the spring. In conclusion, a comparison between GL resulted in effects due to genetic line, poult source, and rearing season on bird performance and carcass yield.

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“…Bearing in mind that the primary objective of the paper was to contribute to the understanding of the global trade network in the context of transboundary spread of poultry diseases, and recognizing that the risk of disease spread associated with poultry differs depending on their age, analyses were performed separately for 3 networks: 1) the network of live poultry lighter than 185 g; 2) the network of live poultry of 185 g or more; and 3) the network of poultry hatching eggs ( Boyle et al., 2000 ; Ellis et al., 2005 ; McQuiston et al., 2005 ; Shankar, 2008 ). Network 1 is for chicken aged from 1 d to approximatively 3 wk, ducks and turkeys aged from 1 d to approximatively 1 wk, and guinea fowls aged from 1 d to approximatively 2 wk ( Aggrey, 2002 ; Nahashon et al., 2006 ; Osei-Amponsah et al., 2014 ; Chang et al., 2016 ; Sogut et al., 2016 ). Network 2 is for poultry older than that age.…”

Section: Methodsmentioning

confidence: 99%

Global formal live poultry and hatching egg trade network (2004-2016): description and association with poultry disease reporting and presence

Awada

Chalvet‐Monfray²,

Tizzani³

et al. 2021

Poultry Science

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As international trade constitutes one of the main spread pathways of diseases, a better understanding of the trade behaviors of countries will help identify strengths and areas for improvement in the approach of national authorities to controlling poultry diseases globally. Using data reported to the United Nations Comtrade and the World Organisation for Animal Health ( OIE ) between 2004 and 2016 by 193 countries, we used a network analysis on trade data of poultry hatching eggs, live poultry of less than 185 g and live poultry of 185 g or more to determine that: 1) quantities traded between countries are substantial, and tend to increase (average increase of 800,000 poultry heads and 21,000 tons of hatching eggs each year equivalent to an increase by 2-fold in 17 yr); 2) the stability of the networks was low (a quarter to half of trade relationships maintained between 2 consecutive years) and the subnetworks favorable to the spread of diseases were in general consistent with regional clustering, trade exchanges being equally at intracontinental and intercontinental levels; 3) countries with highest number of partners were located in the same world regions for the 3 poultry networks - Americas and Europe for export (up to 107 partners) and Africa, Asia and Europe for import (up to 36 partners); 4) for live poultry, biggest exporting countries shared more poultry disease surveillance data, and reported more disease presence than others, which did not stop them from trading. Biggest importers reported less poultry disease surveillance data and reported more disease presence than others; and 5) the main structural and trend characteristics of the international trade networks were in general similar for the 3 networks. The information derived from this work underlines the importance of applying the preventive measures advocated by the OIE and will support countries to reduce the risk of introduction of pathogens causing poultry diseases.

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Analyzing Growth Curves of Turkeys Reared in Different Breeding Systems (Intensive and Free-Range) with some Nonlinear Models

Cited by 10 publications

References 17 publications

Early sex determination of Turkey by observation of differences in body weight between male and female

Early sex determination of Turkey by observation of differences in body weight between male and female

Performance and processing yield comparisons of Large White male turkeys by genetic lines, sources, and seasonal rearing

Global formal live poultry and hatching egg trade network (2004-2016): description and association with poultry disease reporting and presence

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