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Comparison of the laying and egg weight of laying hens in two types of cages

100%

Damaziak K., Riedel J., Michalczuk M., Kurek A.

Annals of Warsaw University of Life Sciences - SGGW. Animal Science

2013

tom 52

This study was aimed at comparing production results of laying hens kept in two types of cages: furnished cages and conventional cages. It covered the period from the 36th till the 54th week of hens life that was divided into two experimental stages: stage I - from week 36 till week 44, and stage II - from week 46 to week 54. Till week 44, 190 layers were reared in groups (10 hens each) in furnished cages (F) and 190 layers were kept individually in conventional cages (C). In week 45, the hens from furnished cages (F) were moved to conventional cages (FC), whereas these from conventional cages (C) were randomly merged into groups of 10 hens and transferred to furnished cages (CF). Egg laying (%) and egg weight (g) were controlled as well as percentage contribution of eggs in standard egg weight classes was determined in both experimental stages. The study showed a significant (P < 0.01) effect of cage type on the laying performance of the hens but only in the second stage of the study, as well as a significant (P < 0.01) effect of hens moving to different cages. In both cases, higher egg laying was reported for the hens from the conventional cages. Egg weight in the first and the second stage of the experiment was significantly (P < 0.01) higher in the groups housed in the furnished cage. A higher egg weight (P < 0.01) was determined in the layers in the second stage of the study. Both in the first (P < 0.01) and in the second (P < 0.05) stage, analyses showed a significant effect of cage type on the contribution (%) of eggs in particular egg weight classes. A higher percentage of eggs in the L class was obtained from the hens housed in the furnished cages. Differences in laying performance after hens moving suggest that the layers adapt more easily and faster to conditions of the C type cages. The egg weight was, probably, more dependent on general laying performance and age of the hens than on cage type.

Egg quality in multi-deck cage technology system

59%

Chmelnicna L., Solcianska L.

Polish Journal of Food and Nutrition Sciences

2007

tom 57

nr 4[A]

77-79

The quality of table eggs was monitored in hens housed in seven-floor cage technology system from the 25th to 54th week of hen’s age. We classified the eggs on the non-standard ones, i.e. double-yolked, with weight under 45 g, with egg shell deformation, with egg shell cracks and on the uneatable, i.e. with broken egg shell and without egg shell. We found out different light intensity (from 20 to 180 luxes) on individual floors. The laying period was divided to three parts and we realized 5 classifications of whole day egg production in every part. We found out the different share of eggs with egg shell cracks (0.31 – 0.47 – 0.68%) in relation to age of hens in the 1st – the 2nd – the 3rd part of laying cycle. The egg less than 45 g occurred only in the 1st period, but the occurrence of eggs with deformation of shell (0.31 – 0.47 – 0.68%) and the double-yolked eggs (0.67 – 0.52 – 0.54%) was relatively well-balanced. Total production of the non-standard eggs from the whole production was 1.33 – 1.44 – 1.46 in the parts of the cycle. The occurrence of non-standard eggs in relation to the number of the etage was followed as the most relevant in double-yolked eggs at 0.53 – 0.47 – 0.42 – 0.52 – 0.75 – 0.65 – 0.68% from the 1st to the 7th floor in direct relation to the light intensity. The other categories of non-standard eggs showed relatively equal values at every etage. We found out the share of the uneatable eggs in relatively low values at 0.85 – 0.70 – 1.24% from total production in the 1st, the 2nd and the 3rd part of the laying cycle. The results of these shares were found out at 90.8 – 91.8 – 76.8% of laying intensity of hens.

Ograniczanie wyników

1 Annals of Warsaw University of Life Sciences - SGGW. Animal Science

1 Polish Journal of Food and Nutrition Sciences

1 Chmelnicna L.

1 Damaziak K.

1 Kurek A.

1 Michalczuk M.

1 Riedel J.

1 Solcianska L.

1 2013

1 2007

Wyniki wyszukiwania

Comparison of the laying and egg weight of laying hens in two types of cages

Egg quality in multi-deck cage technology system