نتایج جستجو برای: subacute ruminal acidosis
تعداد نتایج: 30349 فیلتر نتایج به سال:
Subacute necrotizing encephalopathy was described originally by Leigh (1951). Further case reports reviewed by Ebels, Blokzijl, and Troelstra (1965) have confirmed this condition as a neuropathological entity but ideas concerning its aetiology have remained speculative. Recently Worsley, Brookfield, Elwood, Noble, and Taylor (1965) have reported a case, with confirmation at necropsy, in which t...
The objective of this study was to evaluate the effects of level of concentrate acidogenic value (AV) and forage particle size on ruminal pH and feed intake in lactating dairy cows. Two isoenergetic (net energy for lactation = 1.5 +/- 0.01 Mcal/kg) and isonitrogenous (crude protein = 17.4 +/- 0.1% dry matter) concentrates with either a low AV or high AV were formulated and fed in a total mixed ...
The objective of Exp. 1 was to compare the effects of virginiamycin (VM; 0, 175, or 250 mg x animal(-1) x d(-1)) and monensin/tylosin (MT; 250/ 90 mg x animal(-1) x d(-1)) on ruminal fermentation products and microbial populations in cattle during adaptation to an all-concentrate diet. Four ruminally cannulated, Holstein steers were used in a 4x4 Williams square design with 21-d periods. Steers...
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