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Effect of Yucca schidigera with or without nisin on ruminal fermentation and microbial protein synthesis in sheep fed silage‐ and hay‐based diets
Author(s) -
SANTOSO Budi,
MWENYA Benson,
SAR Chetra,
GAMO Yuko,
KOBAYASHI Takeo,
MORIKAWA Reina,
TAKAHASHI Junichi
Publication year - 2004
Publication title -
animal science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.606
H-Index - 38
eISSN - 1740-0929
pISSN - 1344-3941
DOI - 10.1111/j.1740-0929.2004.00223.x
Subject(s) - hay , rumen , nisin , silage , fermentation , food science , chemistry , zoology , ruminant , biology , agronomy , pasture , organic chemistry , antimicrobial
A 4 × 6 Youden square design was used to study manipulating effect of Yucca schidigera with or without nisin on rumen fermentation characteristics and microbial protein synthesis in sheep fed silage‐ and hay‐based diets. Four ruminally canulated wethers were given isonitrogenous diets of timothy silage and concentrate (85:15) (S), and timothy hay and concentrate (60:40) (H), on DM basis. The six experimental diets were: (i) S; (ii) S + 240 ppm of Yucca schidigera (SY); (iii) S + 240 ppm of Yucca schidigera + 6 mg/kg bodyweight (BW) 0.75 of nisin (SYN); (iv) H; (v) H + 240 ppm of Yucca schidigera (HY); and (vi) H + 240 ppm of Yucca schidigera + 6 mg/kg BW 0.75 of nisin (HYN). Rumen pH was higher ( P < 0.01) in sheep fed SYN diet than those fed S diet. Concentration of ammonia‐N (NH 3 ‐N) was significantly lower ( P < 0.05) in sheep fed SY, SYN, HY, HYN than those of S and H. Total volatile fatty acids concentration was significantly lower ( P < 0.05) in HYN than in H diet and tended to be higher in sheep fed H diets than those fed S diets. There was a significantly higher ( P < 0.01) efficiency of microbial nitrogen synthesis in the rumen of sheep fed on HY diet than those fed on H diet.