Impact of led lighting color on productive and behavioral characteristics of the broiler chickens

2023-05-09T10:34:33-05:00

The present study was conducted to investigate the effect of color (white and blue-green) of LED lighting on the productive, carcass and behavior traits of Cobb broiler chickens. Total of 200 one- day-old unsexed chicks were used, and divided into two pens/groups (100 birds of each with 25 birds of each replicate), at stocking density of 8.7 bird/ square meters. First pen used for LED white color and second pen for LED blue- green mix color light. The results showed that the birds exposed to blue-green light had significant higher (P≤0.01) BW, DBWG and FC values of the whole experimental period compared to those exposed to white color. However, the light color had no significant effect on FCR and MR measurements with average values 1.44 and 0.50%, respectively. The birds exposed to blue-green light had significant higher pre-slaughter live BW and carcass weights (P≤0.01) compared to those exposed to white color. The birds exposed to blue-green light had higher insignificant dressing percentage compared to those exposed to white color. The weekly behavior results showed highly significant differences (P≤0.01) among weeks for aggressiveness and immobility activities, while it being insignificant for pecking activity. The correlation value between immobility and five-week BW of birds reared under blue-green light was the only significant value (0.42) among all studied values. In conclusion, the results indicated that Cobb broilers were calmer under blue-green light compared to those reared under white light, which contributed in more better performance traits.

Blood and carcass characteristics of two chicken strains subjected to Ocimum graticimum leaf based diet as substitute for synthetic antibiotics

2023-07-06T07:17:53-05:00

This study was designed to evaluate the effect of graded levels of scent leaf meals on blood parameters and carcass characteristics among two broiler strains. A total of 150 unsexed broilers consisting of 75 Abor Acre and 75 Cobb were randomly allotted into 5 treatments of 15 birds for each strain. Treatment one (T1) had no scent leaf meal (control); treatment two (T2), treatment three (T3), treatment four (T4) and treatment five (T5) had 0.5%, 1.0%, 1.5%, and 2.0% throughout the experimental period (56days). Blood samples and carcass characteristics were evaluated after the feeding trial and subjected to analysis of variance in a completely randomized design. Results revealed that diets and strain significantly (P < 0.05) affected live weight, dressed weights, and dressing percentages. T3 had the highest live and dressed weight (2091.50 ± 85.27 g and 1737.67 ± 22.16 g), while T5 recorded the lowest (1700 ± 102.47 g and1253.17 ± 68.09 g). Cobb was superior to Arbor acre for all carcass traits except for leg weight. Red Blood Cell, White Blood Cell, Mean Corpuscular Volume, Mean Corpuscular Haemoglobin and Mean Corpuscular Haemoglobin Count of the two strains were significantly (P < 0.05) different, while Pack Cell Volume, Haemoglobin, Neutrophils, Lymphocytes, Monocytes, Eosinphils and Basophils were not significantly different (P > 0.05). This study revealed no detrimental effect of the test ingredients on birds, though 1.5% inclusion rate could be tolerated, 1.0% is recommended for optimum performance, and can therefore efficiently replace synthetic antibiotic in broiler production.

Animal Review

Impact of led lighting color on productive and behavioral characteristics of the broiler chickens

Blood and carcass characteristics of two chicken strains subjected to Ocimum graticimum leaf based diet as substitute for synthetic antibiotics