Effects of feed withdrawal duration on animal behaviour, rumen microbiota and blood chemistry in feedlot cattle: implications for rumen acidosis
نویسندگان
چکیده
منابع مشابه
Experimental acute rumen acidosis in sheep: consequences on clinical, rumen, and gastrointestinal permeability conditions and blood chemistry.
Acute acidosis was induced in sheep, and gastrointestinal permeability was assessed by using lactulose as a permeability marker. Metabolism was evaluated by monitoring blood metabolites. Four rams (72.5 ± 4.6 kg BW) were used in a 2 × 2 changeover design experiment. The experimental period lasted 96 h from -24 to 72 h. After 24 h of fasting (from -24 to 0 h) for both controls and acidosis-induc...
متن کاملEffects of purified lignin on in vitro rumen metabolism and growth performance of feedlot cattle
OBJECTIVE The objectives were to assess the effects of purified lignin from wheat straw (sodium hydroxide dehydrated lignin; SHDL) on in vitro ruminal fermentation and on the growth performance of feedlot cattle. METHODS In vitro experiments were conducted by incubating a timothy-alfalfa (50:50) forage mixture (48 h) and barley grain (24 h) with 0, 0.25, 0.5, 1.0, and 2.0 mg/mL of rumen fluid...
متن کاملTranscriptomic Changes in the Rumen Epithelium of Cattle after the Induction of Acidosis
The transition from normal forage to a highly fermentable diet to achieve rapid weight gain in the cattle industry can induce ruminal acidosis. The molecular host mechanisms that occur in acidosis are largely unknown. Therefore, the histology and transcriptome profiling of rumen epithelium was investigated in normal and acidosis animals to understand the molecular mechanisms involved in the dis...
متن کاملAssessment of microbiome changes after rumen transfaunation: implications on improving feed efficiency in beef cattle
BACKGROUND Understanding the host impact on its symbiotic microbiota is important in redirecting the rumen microbiota and thus improving animal performance. The current study aimed to understand how rumen microbiota were altered and re-established after being emptied and receiving content from donor, thus to understand the impact of such process on rumen microbial fermentation and to explore th...
متن کاملRumen Acidosis in Dairy Cattle: Bunk Management Considerations
Despite diet formulation for chemical (15) and physically-effective fiber (12) minimums, nonstructural carbohydrate (NSC) and starch maximums (16), and the use of total mixed rations (TMR), some degree of SARA may be inevitable in high-producing dairy herds because total chewing and rumination times per kg of rumen-fermentable organic matter (RFOM) intake declines as RFOM intake increases (Figu...
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ژورنال
عنوان ژورنال: Animal
سال: 2020
ISSN: 1751-7311
DOI: 10.1017/s1751731119001538