Daily Feed Intake and Performance of Laying Hens Grouped According to Their Body Weight

Harms, R. H.; Costa, Paulo Tabajara Chaves; Miles, R. D.

doi:10.3382/ps.0611021

Cited by 40 publications

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“…The effect of body weight on FCR was found significant, and hens in L group had the lower FCR value than M and H groups. In agreement with the present results, Harms et al (1982) reported that feed consumption per kg of egg production increased as the body weight increased. Feed conversion ratio was not affected by weight group by age period interaction.…”

Section: Discussionsupporting

confidence: 82%

“…Egg production was not affected by body weight. Similarly to the present study, other studies reported no change in egg production depending upon body weight (Harms et al, 1982;Cerolini et al, 1994;Harms et al, 2000;Kirikci et al, 2004). However, Harms and Russell (1996) and Akbas and Takma (2005) found that body weight was positively related to egg production.…”

Section: Discussionsupporting

confidence: 63%

“…Mean egg weights increased at the 1 st , 2 nd and 3 rd cycle of laying period as body weight increased. This is supported by Du Plessis and Erasmus (1972), Harms et al (1982) and Leeson and Summers (1987), who reported that higher body weight resulted in large egg length, width and mass, all factors affecting egg weight. Egg weight in the 4 th period (68-84 weeks) was similar in L and M groups, and H group had the lowest egg weight within the groups.…”

Section: Discussionmentioning

confidence: 49%

“…The mean values of daily feed consumption at the end of experiment were 123.93, 127.48 and 130.67 g for L, M and H groups, respectively. Leeson and Summers (1987) and Harms et al (1982) noted that there was a significant relationship between feed consumption and body weight. As body weight increased, feed consumption of hens also increased.…”

Section: Discussionmentioning

confidence: 99%

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Effects of differences in the initial body weight of groups on laying performance and egg quality parameters of Lohmann laying hens

Laçin¹,

Yıldız²,

Esenbuğa³

et al. 2008

CZECH J ANIM SCI

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ABSTRACT:This study was carried out to investigate the effect of different body weight groups (light (L) = 1 400-1 500; medium (M) = 1 500-1 600 and heavy (H) = 1 600 < g) on performance and egg quality traits of Lohmann hens, 24 weeks of age, in different laying periods. A total of 288 Lohmann White layers were allocated randomly to three groups with respect to live weight, each consisting of 24 replicated cages as subgroups, comprising four hens. The study period lasting for 60 weeks was investigated as four different age periods (first period = 24-40 weeks; second period = 40-54 weeks; third period = 54-68 weeks; fourth period = 68-84 weeks). Differences in the initial live weight at the beginning of experiment among the groups continued to the end of experimental period. Considering the egg production, differences among the groups were not significant (P > 0.05) during the experimental period. Egg weight was determined to be lower in the group with low body weight (64.58 g) than in medium (64.97 g) and heavy hen groups (66.30 g). Differences in feed intake and feed conversion ratio among the groups were found significant, and the mean values were 123.93, 127.48 and 130.67 for feed consumption (g/day); 2.23, 2.28 and 2.27 for feed conversion ratio. Except for the feed conversion ratio, the effect of weight groups by age period interaction on performance parameters was significant (P < 0.01). The effects of body weight on shell strength, shell thickness and yolk index were not significant during the experimental period. However, different body weight groups significantly affected shape index, yolk colour, albumen index and Haugh unit parameters. Shell strength, yolk colour and yolk index values were affected by weight groups by age period interaction. In conclusion, Lohmann White hens in the light group in a uniform flock had higher egg production and lower feed conversion ratio values than those of other weight groups.

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Section: Discussionsupporting

confidence: 82%

Section: Discussionsupporting

confidence: 63%

Section: Discussionmentioning

confidence: 49%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of differences in the initial body weight of groups on laying performance and egg quality parameters of Lohmann laying hens

Laçin¹,

Yıldız²,

Esenbuğa³

et al. 2008

CZECH J ANIM SCI

View full text Add to dashboard Cite

show abstract

“…3, were from 10.95 to 11.65 g. Same range values determined from different studies that used the same age control groups (Dikmen and Ipek, 2006;Altan et al, 1998). The selection studies for body weight gain in poultry illustrated that there were increases in both egg weight and feed consumption (Harms et al, 1982;Leeson and Summers, 1987;Inal et al, 1996). On the other hand, Cherry et al (1987) reported that there were no significant differences for yolk proportion of eggs with low body weight and normal lines in chickens; these results were consistent with our study.…”

Section: Resultsmentioning

confidence: 99%

Effect of selection for body weight in Japanese quails(Coturnix coturnix Japonica) on some production traits

Taşkın

Karadavut

Tunca

et al. 2016

IJAR

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The aim of the study was to identify quails which have different body weight for some production traits such as egg production, egg characteristics, daily feed consumption and feed conversion ratio (FCR). The selection was based on body weight in Japanese quail over two generations using 150 quails (120 female and 30 male). These groups consisted of Low Body Weight (LBW), High Body Weight (HBW) and control. Average body weights for females at the end of five weeks were 182.3±0.5, 159.5±0.34, and 141.7±0.55 for LBW, HBW and control groups respectively. There were significant differences between females and males in body weight across the generations. Significant differences were observed for total egg production and egg width for Group X Generation's interactions. Also, statistically significant differences were found for egg quality parameters such as yolk index, yolk height, yolk diameter, albumin length, and albumin width among generations. As a result, body weight is a very important factor in selection studies and it also increases the efficiency of the selection program with other selection features.

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On-station performance evaluation of improved tropically adapted chicken breeds for smallholder poultry production systems in Nigeria

Bamidele

Sonaiya

Adebambo

et al. 2019

Trop Anim Health Prod

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Background Availability of appropriate genetics is important for the development of smallholder poultry (SHP). The biological potential of improved dual purpose chicken germplasms was evaluated in Nigeria. Methods A total of six breeds (Fulani, FUNAAB Alpha, Kuroiler, Noiler, Sasso, and Shika-Brown) were tested on-station, in deep litter houses at two test centres (Public and private facility) for 504 days. Birds were fed ad libitum for the first 140 days after which restricted feeding was practised. Result Lowest and highest hatchability of eggs set was 55% (FUNAAB Alpha) and 89% (Sasso), respectively. At 140 days, male live weights were 200%-300 % higher than the local chickens (975 g) except Shika-Brown (152%) and Fulani (135%). Lowest (p < 0.05) age at first egg was 119 days for Shika-Brown and 120 days for FUNAAB Alpha and Kuroiler. Highest hen-housed egg production was 192 for Shika-Brown, and feed intake per dozen eggs was lowest (p < 0.05) for Shika-Brown (2.9 kg) and FUNAAB Alpha (2.9 kg). Mortality rate of the locally sourced breeds (Fulani, FUNAAB Alpha, Noiler, and Shika-Brown) was significantly lower (p < 0.05) than the foreign-sourced breeds (Kuroiler, Sasso) during brooding, growing and laying. Conclusion Results from this study identified FUNAAB Alpha and Noiler as being more suitable for dual-purpose functions (egg and meat), while Sasso and Kuroiler (meat) and Shika-Brown (egg) were observed to be better suited for single purpose functions. These findings could guide the introduction of smallholder poultry-specific hybrid germplasms for the development of the smallholder poultry production systems in Nigeria.

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Daily Feed Intake and Performance of Laying Hens Grouped According to Their Body Weight

Cited by 40 publications

References 0 publications

Effects of differences in the initial body weight of groups on laying performance and egg quality parameters of Lohmann laying hens

Effects of differences in the initial body weight of groups on laying performance and egg quality parameters of Lohmann laying hens

Effect of selection for body weight in Japanese quails(Coturnix coturnix Japonica) on some production traits

On-station performance evaluation of improved tropically adapted chicken breeds for smallholder poultry production systems in Nigeria

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