Production Performance, Egg Characteristics And Immune Response In Commercial Layers Reared At Different Cage And House Zones During Summer (Record no. 9772)
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fixed length control field | 04381nam a22002057a 4500 |
005 - DATE AND TIME OF LATEST TRANSACTION | |
control field | 20161122101024.0 |
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
fixed length control field | 161122b2016 xxu||||| |||| 00| 0 eng d |
041 ## - LANGUAGE CODE | |
Language code of text/sound track or separate title | eng |
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
Classification number | 2619-T |
100 ## - MAIN ENTRY--AUTHOR NAME | |
Personal name | Muhammad Irfan (2008-VA-491) |
110 ## - MAIN ENTRY--CORPORATE NAME | |
Location of meeting | Dr. Shahid Mehmood |
245 ## - TITLE STATEMENT | |
Title | Production Performance, Egg Characteristics And Immune Response In Commercial Layers Reared At Different Cage And House Zones During Summer |
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
Year of publication | 2016. |
300 ## - PHYSICAL DESCRIPTION | |
Number of Pages | 81p.; |
502 ## - DISSERTATION NOTE | |
Dissertation note | Recent trends in commercial layer farming is changing the production trends worldwide. The commercial layer farming in Pakistan is shifting from open or semi controlled floor farms to modern automatic controlled caged farms. These cage farms are megastructure having capacity of huge bird rearing, due to large house dimensions the environment of house not remain uniform throughout the house and difference in light intensity, air speed, temperature and humidity horizontally and vertically have significant impacts on overall performance of layers. House and cage zones in environment controlled house may influence productive performance, egg characteristics and immune response in commercial layers. For this purpose, a total of 588 birds arranged according to completely randomized design and divided in three house zones (Near pads, middle and near fans) and four tier levels (Lower, Bottom, Middle, Upper) being replicated 6 times with 9 birds in each cage. These birds were placed in ECO-60 caged house (4×4) having 9 birds in each pen. These performance of birds were compared for differences in production performance, egg geometry, egg quality and immune profile. Data were analyzed through factorial ANOVA using PROC GLM in SAS software, means were compared through Duncan’s Multiple Range test. The highest weigh gain was observed in birds reared near the pad zone followed by the birds reared near middle and fan zone. Similarly, better egg production was found in the birds reared near evaporative cooling pads and middle zone as compared to the birds reared near the fan zone. To this end, better egg mass was found in the birds reared near pad and middle zone as compared to the birds reared near the fan zone. FCR / kg egg mass was found in the birds reared near pad and middle zone as compared to the birds reared near the fan. Regarding Infectious Bronchitis (IB), Avian Influenza (H9), Avian Influenza (H7), Mycoplasma Gallisepticum (MG), Newcastle (ND), difference in titters was observed among the birds of different housing zones and their interaction. CHAPTER 6 SUMMARY 59 However, no significant effect of house zones, tier cage levels and their interaction was observed regarding egg characteristics and immune response. Conclusions From the discussion in the previous chapter it can be concluded that: In modern environment control layer house, different house zones influence productive performance of the birds, especially near the pad zone birds exhibited improve body weight and better production %. In the same way, birds reared near the middle zone showed better egg mass, FCR / dozen eggs and FCR / Kg egg mass. Among different house zones and tier cage levels, temperature, relative humidity and thermal index varied throughout the experimental period. Birds reared neat the pad zone at central tier had better body weight, while, better production % exhibited by the birds reared near the middle zone at lower cage tier. However, birds reared near pad zone at bottom cage tier revealed better FCR/dozen eggs and / kg egg mass. Different cage tier levels did not influence productive performance, egg characteristics and immune response of commercial layers. Improved immune response was shown by the birds reared in middle zone of the house as compared to pad and fan zone while tier level did not influenced the antibody titer. Suggestions and Recommendation Behavioral studies are required to observe the response of bird at micro climate. Further investigations are needed to fulfill the welfare issues of commercial layer. Researchers should come forward to explore the alternative housing system of commercial layer. |
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
Topical Term | Poultry Production |
700 ## - ADDED ENTRY--PERSONAL NAME | |
Personal name | Prof. Dr. Athar Mahmud |
700 ## - ADDED ENTRY--PERSONAL NAME | |
Personal name | Dr. Arshad Javid |
942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
Koha item type | Thesis |
Damaged status | Collection code | Permanent Location | Current Location | Shelving location | Date acquired | Full call number | Accession Number | Koha item type |
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Veterinary Science | UVAS Library | UVAS Library | Thesis Section | 2016-11-22 | 2619-T | 2619-T | Thesis |