RT Journal T1 POST-PEAK EGG PRODUCTION IN LOCAL AND IMPORTED STRAINS OF JAPANESE QUAILS (C OTURNIX COTURNIX JAPONICA) AS INFLUENCED BY CONTINUOUS AND INTERMITTENT LIGHT REGIMENS DURING EARLY GROWING PERIOD A1 A. S. Jatoi A1 M. K. Khan A1 A. W. Sahota A1 M. Akram A1 K. Javed A1 M. H. Jaspal A1 S. H. Khan JF Journal of Animal and Plant Sciences JO JAPS SN 1018-7081 VO 23 IS 3 SP 727 OP 730 YR 2013 FD 2013/06/01 DO DOI NA AB

A study was conducted at Avian Research and Training Centre, University of Veterinary and Animal Sciences, Lahore to investigate earlier effect of continuous and intermittent lights in 3 local and one imported close-bred flocks of Japanese quails (Coturnix coturnix japonica) on their post-peak egg production. Day-old quails were provided continuous 24 hours light up to first 2 weeks and were maintained under 5 different light treatments, A (16L: 8D), B (8L: 6D: 2L: 8D), C (8L: 7D: 1L: 8D), D (8L :7.5D: 0.5L: 8D) and E (8L: 16D) from 3rd to 14th weeks and from 15th weeks onward provided light 16L: 8D. In this trial, 22 weeks-old 240 quails of the same treatments were kept from 23 to 34 weeks under factorial arrangements (5 lights x 4 close bred flocks x 3 replicates of 1 male: 3 females each in a 5 tier battery) under same management. The results showed significant effect of light treatments on body weight (p<0.01), feed intake (p<0.01), egg production (p<0.05) feed conversion ratio (feed/dozen egg) and FCR (feed/ egg) (p<0.01). The highest body weight was recorded under treatment B, however, A, C, D and E differed non-significantly. Higher feed intake was observed under treatment A, varying non-significantly with treatment D. The birds in group A produced significantly (p<0.05) more eggs than in other experimental treatments. FCR in group E was significantly (p<0.05) better than in all other light treatments. Light and strain interaction was significant (p<0.01). The quail strains differed in the above parameters.

K1 Light regimens, body weight, egg production, egg weight, feed intake, FCR PB Pakistan Agricultural Scientists Forum LK https://thejaps.org.pk/AbstractView.aspx?mid=2013-JAPS-307