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标题：Effect of Cellulases Supplementation on Milk Yield and Feed Utilization by Baladi Goats in Early Lactation
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作者：H.H. Azzaz ; A.A. Aboamer ; Hoda Alzahar 等
期刊名称：International Journal of Dairy Science
印刷版ISSN：1811-9743
电子版ISSN：1811-9751
出版年度：2020
卷号：15
期号：1
页码：48-53
DOI：10.3923/ijds.2020.48.53
出版社：Academic Journals Inc., USA
摘要：Background and Objectives: The search for cheap-safe tools for promoting farm animal productivity is the main concern of the animal nutritionists’ nowadays. The main objective of this study was to evaluate impact of cellulase new formula for promoting performance of lactating Baladi goats. Materials and Methods: Eighteen early lactating Baladi goats were randomly divided into 3 groups; the 1st group was fed control ration (50% concentrate feed mixture (CFM), 25% berseem (clover) hay and 25% wheat straw ), the 2nd fed control ration LAB produced cellulase at 42.16 IU kg1 DM (R1), while the 3rd fed control ration 42.16 IU kg1 DM of Pan-Zyme® (R2). The goats were fed dry matter according to 4% of their body weight for 9 weeks. Results: Goats fed cellulases supplemented rations (R1 and R2) showed higher (p<0.05) nutrients digestibility coefficients, milk yield and milk fat, protein, lactose and total solids yields than those of control. Cellulases supplementation did not cause any change in all of blood parameters (ex; glucose, protein AST, ALT and urea concentrations), milk fatty acid s and amino acid s profiles. Conclusion: Inclusion of the produced cellulase in lactating goat’s rations improved their ability for feed utilization and milk production with no bad effects on liver and kidney functions, which reflecting the safety and efficacy of the new cellulase product.
关键词：Cellulase enzyme; lactating goats; feed utilization; liver and kidney functions; growth promoters; milk yield