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
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
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
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
Effects of Orally Chlorella vulgaris Algae Additive on Productive and Reproductive Performance of Lactating Friesian Cows
1Animal Production Research Institute, Agriculture Research Center, Dokki, Giza, Egypt
2Soils, Water and Environment Research Institute, Agriculture Research Center, Giza, Egypt
Abstract
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.
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