Fifteen multiparous Friesian cows with average live body weight (LBW) of 500±4.35 kg and 2-4 lactations were used after parturition and continues until 120 days of lactation and divided into three similar groups. Cows were fed a basal ration contained (DM basis) 40% concentrate feed mixture , 35% corn silage and 25% rice straw without any supplement in R1 (control) or orally supplemented with Chlorella algae and their media at the levels of 2 ml or 4 ml per kg LBW to instead of 1 and 2 liter/head/day for R2 and R3, respectively. Results showed that nutrients digestibility and feeding values improved significantly (P<0.05) with increasing the level of supplementation. Addition of C. vulgaris increased (P< 0.05) feed intake, the concentrations of total protein and globulin, AST to ALT ratio in serum, actual milk, 4% fat corrected milk yield, milk contents, also TVFA’s compared with the control. However, the concentration of NH3-N and Live enzymes activity decreased. Whereas, ruminal pH value and serum albumin and creatinine concentrations were nearly similar for the different groups. Chlorella supplementation had a significant improvements in feed conversion, economic efficiency and post-partum reproductive traits compared to control group. In conclusion, cows supplemented with Chlorella and their media at the level of 4 ml/kg LBW showed the best results concerning productive and reproductive traits and economic efficiency.
Shams, A., Elsadany, A., & Abou-Aiana, R. (2020). Effects of Orally Chlorella vulgaris Algae Additive on Productive and Reproductive Performance of Lactating Friesian Cows. Journal of Animal and Poultry Production, 11(3), 125-131. doi: 10.21608/jappmu.2020.87136
MLA
A. SH. Shams; A. Y. Elsadany; R. M. Abou-Aiana. "Effects of Orally Chlorella vulgaris Algae Additive on Productive and Reproductive Performance of Lactating Friesian Cows", Journal of Animal and Poultry Production, 11, 3, 2020, 125-131. doi: 10.21608/jappmu.2020.87136
HARVARD
Shams, A., Elsadany, A., Abou-Aiana, R. (2020). 'Effects of Orally Chlorella vulgaris Algae Additive on Productive and Reproductive Performance of Lactating Friesian Cows', Journal of Animal and Poultry Production, 11(3), pp. 125-131. doi: 10.21608/jappmu.2020.87136
VANCOUVER
Shams, A., Elsadany, A., Abou-Aiana, R. Effects of Orally Chlorella vulgaris Algae Additive on Productive and Reproductive Performance of Lactating Friesian Cows. Journal of Animal and Poultry Production, 2020; 11(3): 125-131. doi: 10.21608/jappmu.2020.87136
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