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Animal Breeding and Genetics
Asian-Australasian Journal of Animal Sciences 2004;17(6): 820-824.
DOI: https://doi.org/10.5713/ajas.2004.820    Published online January 1, 2004.
Influence of an Anaerobic Fungal Culture (Orpinomyces sp.) Administration on Growth Rate, Ruminal Fermentation and Nutrient Digestion in Calves
Avijit Dey, Jatinder Paul Sehgal, Anil Kumar Puniya, Kishan Singh
The study was to see the effect of administration of ruminal fungi on feed intake, growth rate, rumen fermentation and nutrient digestion of calves (Tharparkar Holstein-Friesian, average age: 10 months, average body weight: 130 kg). The 6 calves in first group were fed a mixture consisted of 50% wheat straw and 50% concentrate (Maize 62%, Groundnut cake 35%, Mineral mix. 2% and Common salt 1%) along with 1 kg green oats animal-1 day-1 while second group calves were fed the above-mentioned diet in addition to a dose of 160 ml (106 CFU/ml) fungal culture calf-1 week-1. The average dry matter intake per day was slightly lowered in fungal fed calves yet feed conversion ratio was higher. The average daily weight gain was significantly higher (15.37%) in fungal administered group as compared to control. The nutrient digestibility was increased for crude fibre, NDF and ADF with fungal administration. Digestible energy value of straw-based diet in terms of percent TDN also increased. The pH and NH3-N were lower whereas TVFA, total-N, TCA-N and number of zoospores were higher in rumen liquor in fungal administered group.
Keywords: Anaerobic Ruminal Fungi; Orpinomyces sp.; Growth Rate; Nutrient Digestion

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