Lighting regimes are possibly used as a strategy to improve rabbit production in tropical regions; on this background, this study was conducted to assess the possible role of different light (L):dark (D) regimes in improving growing New Zealand white rabbit’s performance. Sixty-four growing rabbits were randomly divided into four groups. Rabbits of the first group (C) were exposed to 12 h of light (from 10.00 to 22.00 h). Rabbits of the second group (T1) were exposed to 12 h of light (from 22.00 to 10.00 h). The third group (T2) was exposed to 8 h of light (from 10.00 to 18.00 h), while the fourth group (T3) was exposed to 8 h of light (from 22.00 to 06.00 h). Temperature-humidity index values ranged between 27.00 and 28.87, indicating exposure of growing rabbits to very severe heat stress. Body weight (BW), body weight gain (BWG), feed consumption (FC), feed conversion ratio (FCR), carcass traits, blood

Influences of intermittent light regime as a tool to enhance egg production, egg quality, and blood parameters of laying hens were investigated. A total of 270 hens of Rhode Island Red (during 20 to 36 wk of age) were used to investigate the effects of intermittent light regime in completely randomized design. The birds were divided into 3 equal groups (6 replicates of 15 birds each) and housed in floor pens. The first group was served as non-treated control (C) and was exposed to continuous and constant light for 16 h light/day throughout the experimental period. Whereas, birds of the other groups were exposed to intermittent lights for 20 min/h + 40 min of constant light (T1; FLASH20) and 40 min/h + 20 min of constant light (T2; FLASH40) during the 16 h of light period. Hens of T1 group showed significantly (P ≤ 0.05) the highest concentration of total antioxidant capacity and the lowest one of malondialdehyde in comparison with the other groups. Hens of T1 group had significantly (P ≤ 0.05) the greatest egg laying rate and egg mass in comparison with the other counterparts. Feed consumption was similar in the groups under study. Hens exposed to FLASH20 had the lowest (P ≤ 0.05) FCR when compared with the other treatments. Eggs produced from hens exposed to FLASH20 had the highest value of shell thickness followed by the control and then that of those exposed to FLASH40. There were insignificant differences among the treatments in body weight of hens and all of other egg quality and egg problem traits. In conclusion, intermittent light regime of 20 min/h was the most efficient in comparison with the other ones. Finally, intermittent light regime of 20 min/h during laying period (during 20 to 36 wk of age) is highly recommended.

Influences of intermittent light regime as a tool to enhance egg production, egg quality, and blood parameters of laying hens were investigated. A total of 270 hens of Rhode Island Red (during 20 to 36 wk of age) were used to investigate the effects of intermittent light regime in completely randomized design. The birds were divided into 3 equal groups (6 replicates of 15 birds each) and housed in floor pens. The first group was served as non-treated control (C) and was exposed to continuous and constant light for 16 h light/day throughout the experimental period. Whereas, birds of the other groups were exposed to intermittent lights for 20 min/h + 40 min of constant light (T1; FLASH20) and 40 min/h + 20 min of constant light (T2; FLASH40) during the 16 h of light period. Hens of T1 group showed significantly (P ≤ 0.05) the highest concentration of total antioxidant capacity and the lowest one of malondialdehyde in comparison with the other groups. Hens of T1 group had significantly (P ≤ 0.05) the greatest egg laying rate and egg mass in comparison with the other counterparts. Feed consumption was similar in the groups under study. Hens exposed to FLASH20 had the lowest (P ≤ 0.05) FCR when compared with the other treatments. Eggs produced from hens exposed to FLASH20 had the highest value of shell thickness followed by the control and then that of those exposed to FLASH40. There were insignificant differences among the treatments in body weight of hens and all of other egg quality and egg problem traits. In conclusion, intermittent light regime of 20 min/h was the most efficient in comparison with the other ones. Finally, intermittent light regime of 20 min/h during laying period (during 20 to 36 wk of age) is highly recommended.

A 3 × 2 factorial arrangement was implemented to determine the performance of 450 Cobb broilers subjected to different feeding regimes with and without lighting programs. The chicks were divided into 3 groups according to the feeding regime (ad libitum, restricted, or intermittent), and each group was reared under one of two lighting programs (100% continuous light or 50% continuous light and 50% flashing light). The results showed that the broilers under the ad libitum and intermittent feeding regimes had superior body weight (BW) and average daily gain (ADG) values and the lowest feed conversion ratio (FCR) at 3 and 6 wk of age. Broilers exposed to flashing light and an intermittent feeding regime had the highest BW and ADG values and the lowest FCR. Birds exposed to intermittent feeding had the highest dressed carcass weight and the lowest heart weight. Broilers reared with flashing light had higher tenderness and juiciness values than the other groups. Broilers subjected to a restricted feeding regime and flashing light had the lowest abdominal fat values of all the groups. Tenderness and juiciness were significantly higher in broilers subjected to the ad libitum feeding regime × flashing light and the intermittent feeding regime × flashing light. Broilers fed an intermittent regime had the lowest spleen %, heterophil, heterophil to lymphocyte (H/L) ratio and body temperature values of all the groups, and broilers reared under the intermittent regime × flashing light had the lowest spleen %, H/L ratio and body temperature values. Non-significant differences in all health aspects (shank length, keel bone length, foot pad burns, breast blisters score, hock discoloration, and mortality) were observed among the experimental groups. In conclusion, intermittent and restricted feeding regimes and a flashing lighting program improved the FCR and did not produce any adverse effects on performance or physiological parameters. The results of this work show that intermittent feeding and flashing lighting programs are more beneficial to broiler management.

The survey conducted to assess the incidence of root-knot nematode on pomegranate in five localities (El-Badary, Manfalout, Sedfa, Sahel-Selim and El- Fath) in Assiut governorate. Results showed that 490 out of 500 samples were infested with root-knot nematode showing 98% infestation. Maximum infestation was found in El-Badary, Manfalout and El-Fath (100%), while the minimum was observed in Sahel-Selim (94%) followed by Sedfa (96%). In growing season 2013, the highest occurrence of root-knot nematode second stage was in pomegranate orchards of Sahel-Selim locality (394 J2/100 g soil), but the lowest number was found in Sedfa county (88.8 J2/100 g soil). In 2014, the highest number of juveniles per 100 g soil was observed in El-Fath county (275.4), whereas Manfalout county was the lowest infection (134.2). Bioagents (fungi, bacteria, yeast and actinomycetes) were isolated from pomegranate rhizosphere and evaluated against root-knot nematode J2 mortality percent in vitro. Among 29 fungal culture filtrates, the highest effect was found in culture filtrate of 3 isolates (2, 3 and 10) with average mortality percent 8.33, 10.01 and 9.22, respectively with nonsignificant. The fungal isolate No. 3 was selected and identified as Fusarium verticilloids. From 17 isolates of bacteria, yeast and actinomycetes, the highest mortality was observed in case of isolates No. 8, 9, 10, 11, 12, 15 and 16 with average 24.22, 23.69, 25.59, 25.82, 26.52, 22.13 and 25.24 mortality percent respectively, with nonsignificantly difference. According to morphological and physiological characteristics, isolates No. 10, 11, 12 and 16 were identified as Xenorhabdus beddingii, Streptomyces halstedii, Pantoea agglomerans and Pichia guilliermondii.

The survey conducted to assess the incidence of root-knot nematode on pomegranate in five localities (El-Badary, Manfalout, Sedfa, Sahel-Selim and El- Fath) in Assiut governorate. Results showed that 490 out of 500 samples were infested with root-knot nematode showing 98% infestation. Maximum infestation was found in El-Badary, Manfalout and El-Fath (100%), while the minimum was observed in Sahel-Selim (94%) followed by Sedfa (96%). In growing season 2013, the highest occurrence of root-knot nematode second stage was in pomegranate orchards of Sahel-Selim locality (394 J2/100 g soil), but the lowest number was found in Sedfa county (88.8 J2/100 g soil). In 2014, the highest number of juveniles per 100 g soil was observed in El-Fath county (275.4), whereas Manfalout county was the lowest infection (134.2). Bioagents (fungi, bacteria, yeast and actinomycetes) were isolated from pomegranate rhizosphere and evaluated against root-knot nematode J2 mortality percent in vitro. Among 29 fungal culture filtrates, the highest effect was found in culture filtrate of 3 isolates (2, 3 and 10) with average mortality percent 8.33, 10.01 and 9.22, respectively with nonsignificant. The fungal isolate No. 3 was selected and identified as Fusarium verticilloids. From 17 isolates of bacteria, yeast and actinomycetes, the highest mortality was observed in case of isolates No. 8, 9, 10, 11, 12, 15 and 16 with average 24.22, 23.69, 25.59, 25.82, 26.52, 22.13 and 25.24 mortality percent respectively, with nonsignificantly difference. According to morphological and physiological characteristics, isolates No. 10, 11, 12 and 16 were identified as Xenorhabdus beddingii, Streptomyces halstedii, Pantoea agglomerans and Pichia guilliermondii.

The survey conducted to assess the incidence of root-knot nematode on pomegranate in five localities (El-Badary, Manfalout, Sedfa, Sahel-Selim and El- Fath) in Assiut governorate. Results showed that 490 out of 500 samples were infested with root-knot nematode showing 98% infestation. Maximum infestation was found in El-Badary, Manfalout and El-Fath (100%), while the minimum was observed in Sahel-Selim (94%) followed by Sedfa (96%). In growing season 2013, the highest occurrence of root-knot nematode second stage was in pomegranate orchards of Sahel-Selim locality (394 J2/100 g soil), but the lowest number was found in Sedfa county (88.8 J2/100 g soil). In 2014, the highest number of juveniles per 100 g soil was observed in El-Fath county (275.4), whereas Manfalout county was the lowest infection (134.2). Bioagents (fungi, bacteria, yeast and actinomycetes) were isolated from pomegranate rhizosphere and evaluated against root-knot nematode J2 mortality percent in vitro. Among 29 fungal culture filtrates, the highest effect was found in culture filtrate of 3 isolates (2, 3 and 10) with average mortality percent 8.33, 10.01 and 9.22, respectively with nonsignificant. The fungal isolate No. 3 was selected and identified as Fusarium verticilloids. From 17 isolates of bacteria, yeast and actinomycetes, the highest mortality was observed in case of isolates No. 8, 9, 10, 11, 12, 15 and 16 with average 24.22, 23.69, 25.59, 25.82, 26.52, 22.13 and 25.24 mortality percent respectively, with nonsignificantly difference. According to morphological and physiological characteristics, isolates No. 10, 11, 12 and 16 were identified as Xenorhabdus beddingii, Streptomyces halstedii, Pantoea agglomerans and Pichia guilliermondii.

Influences of intermittent light regime as a tool to enhance egg production, egg quality, and blood parameters of laying hens were investigated. A total of 270 hens of Rhode Island Red (during 20 to 36 wk of age) were used to investigate the effects of intermittent light regime in completely randomized design. The birds were divided into 3 equal groups (6 replicates of 15 birds each) and housed in floor pens. The first group was served as non-treated control (C) and was exposed to continuous and constant light for 16 h light/day throughout the experimental period. Whereas, birds of the other groups were exposed to intermittent lights for 20 min/h + 40 min of constant light (T1; FLASH20) and 40 min/h + 20 min of constant light (T2; FLASH40) during the 16 h of light period. Hens of T1 group showed significantly (P ≤ 0.05) the highest concentration of total antioxidant capacity and the lowest one of malondialdehyde in comparison with the other groups. Hens of T1 group had significantly (P ≤ 0.05) the greatest egg laying rate and egg mass in comparison with the other counterparts. Feed consumption was similar in the groups under study. Hens exposed to FLASH20 had the lowest (P ≤ 0.05) FCR when compared with the other treatments. Eggs produced from hens exposed to FLASH20 had the highest value of shell thickness followed by the control and then that of those exposed to FLASH40. There were insignificant differences among the treatments in body weight of hens and all of other egg quality and egg problem traits. In conclusion, intermittent light regime of 20 min/h was the most efficient in comparison with the other ones. Finally, intermittent light regime of 20 min/h during laying period (during 20 to 36 wk of age) is highly recommended.

Influences of intermittent light regime as a tool to enhance egg production, egg quality, and blood parameters of laying hens were investigated. A total of 270 hens of Rhode Island Red (during 20 to 36 wk of age) were used to investigate the effects of intermittent light regime in completely randomized design. The birds were divided into 3 equal groups (6 replicates of 15 birds each) and housed in floor pens. The first group was served as non-treated control (C) and was exposed to continuous and constant light for 16 h light/day throughout the experimental period. Whereas, birds of the other groups were exposed to intermittent lights for 20 min/h + 40 min of constant light (T1; FLASH20) and 40 min/h + 20 min of constant light (T2; FLASH40) during the 16 h of light period. Hens of T1 group showed significantly (P ≤ 0.05) the highest concentration of total antioxidant capacity and the lowest one of malondialdehyde in comparison with the other groups. Hens of T1 group had significantly (P ≤ 0.05) the greatest egg laying rate and egg mass in comparison with the other counterparts. Feed consumption was similar in the groups under study. Hens exposed to FLASH20 had the lowest (P ≤ 0.05) FCR when compared with the other treatments. Eggs produced from hens exposed to FLASH20 had the highest value of shell thickness followed by the control and then that of those exposed to FLASH40. There were insignificant differences among the treatments in body weight of hens and all of other egg quality and egg problem traits. In conclusion, intermittent light regime of 20 min/h was the most efficient in comparison with the other ones. Finally, intermittent light regime of 20 min/h during laying period (during 20 to 36 wk of age) is highly recommended.

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