Effect of length of productive life of Rhode Island Red (R-11) hens on their performance and egg quality
Journal Title: Acta Scientiarum Polonorum Zootechnica - Year 2014, Vol 13, Issue 1
Abstract
The aim of the study was to evaluate production and egg quality results of Rhode Island Red (line R-11) hens during the first and second year of production. The study was performed with 200 Rhode Island Red hens and 210 eggs obtained at 21, 33, 43, 56, 73, 83 and 93 weeks of age. The results show that during rearing and egg production, birds were characterized by a high survival rate and good health. Laying rate averaged 64.18% during the first year of egg production (21 to 56 weeks) and 51.44% during the second year (63 to 99 weeks of age). Average body weight of the birds and egg weight in the first year of the study were up to breed standard, with significantly higher values in the second year of productive life. Egg quality assessment showed the average weight of eggs increased with the age of hens from 44.90 (week 21) to 64.14 g (week 93). The increase in egg weight was paralleled by a significant increase in yolk and shell weight. Eggs were characterized by good parameters of albumen (albumen height, Haugh units) and shell quality. These traits deteriorated significantly towards the end of the second egg production period. The production results and the good quality of eggs for almost the entire period of the second laying cycle indicate that it is appropriate to use Rhode Island Red R-11 hens for two years.
Authors and Affiliations
Jolanta Calik
Keywords
Related Articles
- EP ID EP74781
- DOI -
- Views 108
- Downloads 0
EFFECT OF CEREAL GRAIN TYPE USED IN DIETS ON THE FATTENING PERFORMANCE AND SLAUGHTER VALUE OF PIGS
The aim of the study was to evaluate production performance, carcass yields, and pork quality of pigs fed diets including barley and triticale. The experiment involved 16 growing pigs obtained from the Danish DanAvI bree...
Changes in the body condition and daily milk yield of cows during lactation depending on the level of fat reserves before calving
The aim of the study was to analyse the effect of the level of fat reserves accumulated in the bodies of cows before parturition on changes in their body condition and daily yield after calving. The study was carried out...
Assessment of slaughter exsanguination in fatteners with a different backfat thickness
The aim of the study was to evaluate exsanguination of fatteners with a different backfat thickness. The study covered 126 gilts of Polish Landrace, examined in Pig Performance Testing Station in Chorzelów and slaughtere...
DISPUTE ON RITUAL SLAUGHTER
The following paper aims to analyze the arguments presented by the supporters and opponents in the discussion concerning moral and legal aspects of ritual slaughter in Poland and to delineate a possible area of compromis...
TIME OF LYING IN THE HORSE WITH REGARD TO ITS SEX AND SYSTEM OF MANAGEMENT
The objective of the study was to determine demands for lying in adult horse males and females, as well as in females maintained under various systems. 43 horses were studied in three centres. Time of lying was measured...