Print ISSN: 2077-5822

Online ISSN: 2618-1479

Keywords : incubation


The Effect of Pre-Incubation And Storage Period on Some hatching Traits for Broiler Breeder Eggs .

Mahdi S. Mohammad; Basil M. Ibrahim

Al-Qadisiyah Journal For Agriculture Sciences, 2018, Volume 8, Issue 2, Pages 92-100
DOI: 10.33794/qjas.2018.162641

A total of 1800 broiler breeder , Ross 308 at 47 wks old , hatching eggs .Were used in the present study . Eggs were randomly distributed into 12 experimental treatments ,150 eggs pretreatment groups . The treatment groups were as follows :
T1 treatment without pre-incubation + 4 days eggs storage period
T2 treatment without pre-incubation + 8 days eggs storage period
T3 treatment without pre-incubation + 12 days eggs storage period
T4 treatment 4 hours pre-incubation + 4 days eggs storage period
T5 treatment 4 hours pre-incubation + 8 days eggs storage period
T6 treatment 4 hours pre-incubation + 12 days eggs storage period
T7 treatment 8 hours pre-incubation + 4 days eggs storage period
T8 treatment 8 hours pre-incubation + 8 days eggs storage period
T9 treatment 8 hours pre-incubation + 12 days eggs storage period
T10 treatment 12 hours pre-incubation + 4 days eggs storage period.
T11 treatment 12 hours pre-incubation +8 days eggs storage period
T12 treatment 12 hours pre-incubation + 12 days eggs storage period.
Experimental parameters measured included : Fertility , hatchability percentage from the total incubated eggs and from fertile eggs , hatching chicks length , weekly embryonic mortality ,piped eggs and quality evaluation of navel for hatching chicks .
The results of this study showed a significant increase (P <0.05) in the rate of early embryonic mortality of the treatment which was pre- incubated for 8 hours and stored for 12 days compared to the treatment that was unpre-incubated and stored for 4 days, medium embryonic mortality increased to a treatment which was pre-incubated for 8 hours and stored for 12 days compared to the treatment that was pre-incubated for 8 hours and was stored for 4 days , the rate of piped eggs was significantly (P<0.05) increased to the treatment 4 hours pre-incubated x 12 days storage compared to most others treatments. The percentage of hatched chicks its have the navel type A significantly (P<0.05) increased for the treatment 4 hours × 4 days compared to the treatment 12 hour × 12 days , while significantly (P<0.05) decrease the percentage of hatched chicks type navel B for treatment 0 hour × 4 days compared to the treatment 12 hour × 12 days , either quality type C It has significantly (P<0.05) decreased for both treatments 4 hour ×4 days and 4 hour ×8 days compared to the treatment 12 hour × 12 days
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The Aerobic and Anaerobic Decomposition for Different Sources of Organic Material Content

A.A. Al-Gumaily; S. S. Al-Azawi

Al-Qadisiyah Journal For Agriculture Sciences, 2016, Volume 6, Issue 2, Pages 127-135
DOI: 10.33794/qjas.2016.115298

A incubation experiment is carried out in a wood tent under aerobic and anaerobic with CRD design at 3 replicates in 24 experimental units. The experiment treatments include ( Cow residue , date palm residues without adjusted C/N , date palm residues with adjusted C/N to 1/19 and soil is used as control treatment , The organic components are characterize and measured of the content organic weekly during incubation period for 4 months. The results showed that The aerobic decomposition is faster than anaerobic decomposition , The organic residues of organic matter are reduced under anaerobic condition from 54.59 gm.Kg-1 after 7 days to reach a value of 48.68 gm.Kg-1 after 54 day of incubation period, while under aerobic conditions it is 52.33 gm.Kg-1 to reach a value of 43.81 gm.Kg-1 after 54 day of incubation period and show there are differences significant at 21 , 28 , 35 , 42 , 48 and 54 days respectively, Also The adjusted and non-adjusted date palm residues showed a significant difference superiority in the organic content. matter in all periods