Ruminal acidosis in feedlot cattle: Interplay between feed ingredients, rumen function and feeding behavior (a review)

González, L. A.; Manteca, Xavier; Calsamiglia, S.; Schwartzkopf-Genswein, K. S.; Ferret, A.

doi:10.1016/j.anifeedsci.2011.12.009

Cited by 203 publications

(168 citation statements)

References 86 publications

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“…Moreover, it must be taken into account that CONC animals had free access of up to 2 kg of long barley straw, which could also have helped for a higher fiber intake in CONC compared to TMR animals and thus increase rumination and saliva production. These circumstances can also have accounted for the better rumen conditions found in CONC animals (González et al, 2012).…”

Section: Ruminal Mucosa and Phmentioning

confidence: 96%

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Ruminal pH and temperature, papilla characteristics, and animal performance of fattening calves fed concentrate or maize silage-based diets

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Bartolomé³

et al. 2014

Chilean J. Agric. Res.

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Feeding systems can play an important role, not only in beef farm profitability but also in animal health and performance. Fourteen Avileña-Negra Ibérica bulls, with an initial weight of 270 kg (SE 22.6 kg) and aged 223 d (SE 16.2) were used to study the effect of two feeding systems on ruminal pH and temperature and animal performance when calves were kept in loose housing conditions. Feeding systems were barley (Hordeum vulgare L.) grain-based concentrate plus barley straw (CONC) and maize (Zea mays L.) silage-based total mixed ration (TMR). Internal wireless boluses were used to collect pH and temperature values every 10 min throughout the measurement period (15 d). Diet did not modify (P > 0.10) average daily gain, carcass weight, dressing percentage, ruminal mucosa color, or papilla counts. Papilla width and papilla width/lamina propria thickness were significantly lower (P < 0.05) in TMR than in CONC animals. Time spent below ruminal pH thresholds of 7.0, 6.6, 6.2, and 5.8 and the corresponding areas under the curve were higher (P < 0.05) for animals fed under the TMR system. No significant changes were observed between experimental treatments in parameters related to ruminal temperature or estimated number of times that the animals were drinking during the day (P > 0.10). Although animal performance is not affected, feeding fattening calves on a concentrate plus barley straw diet can result in better rumen conditions than using maize silage-based TMR.

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Section: Ruminal Mucosa and Phmentioning

confidence: 96%

“…Using concentratebased rations has been criticized for its consequences on ruminal pH and the development of subacute ruminal acidosis processes (González et al, 2012). Using concentrates and decreasing ruminal pH values are two closely interrelated factors and there is no clear discrimination between the two .…”

Section: Introductionmentioning

confidence: 99%

Ruminal pH and temperature, papilla characteristics, and animal performance of fattening calves fed concentrate or maize silage-based diets

Bodas

Posado

Bartolomé³

et al. 2014

Chilean J. Agric. Res.

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“…Digestibility of forage fiber affects growth performance in rapidly growing beef steers. In addition, providing adequate dietary concentrations of digestible fiber in cattle rations is essential for animal health, as it is required to support an appropriate rumen function (Campbell et al 1992;Gonza´lez et al 2012).…”

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confidence: 99%

Feeding a brown midrib corn silage-based diet to growing beef steers improves growth performance and economic returns

et al. 2015

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. 2015. Feeding a brown midrib corn silage-based diet to growing beef steers improves growth performance and economic returns. Can. J. Anim. Sci. 95: 625Á631. A feedlot experiment was performed to determine growth performance, ruminal fermentation characteristics, and economic returns for growing beef steers when fed a brown midrib corn silage-based total mixed ration (BMRT) compared with a conventional corn silagebased total mixed ration (CCST). Twenty-four Angus crossbred steers (initial body weight0258923.2 kg) in individual pens were used in a completely randomized design (n 012). Intake of dry matter was not different between the treatments. Steers fed the BMRT tended to have greater average daily gain (1.54 vs. 1.42 kg d(1 ; P00.09) and gain-to-feed ratio (0.165 vs. 0.146; P00.07) compared with those fed the CCST. Feeding the BMRT increased total volatile fatty acid (VFA) concentration (P00.01) compared with the CCST, while it decreased molar proportion of acetate (PB0.01), and increased propionate proportion (P00.01), resulting in decreased acetate-to-propionate ratio compared with the CCST (PB0.01). Steers fed the BMRT increased feed margin (P00.05) and net return (P 00.02) compared with those fed the CCST throughout the trial. Overall results of this study indicate that feeding the BMRT to growing beef steers enhanced ruminal fermentation and beneficially shifted VFA profiles, which contributed to improved growth and economic performance of steers. J. Anim. Sci. 95: 625Á631. Une expe´rience en parc d'engraissement a e´te´effectue´e pour de´terminer la performance de croissance, les caracte´ristiques de fermentation ruminale et les rendements e´conomiques chez les baeufs de boucherie en croissance lorsque nourris une ration totale mixte a`base de maı¨s a`nervure brune (BMRT Á « brown midrib corn silage-based total mixed ration ») par rapport a`ceux nourris d'une ration totale mixte traditionnelle a`base d'ensilage de maı¨s (CCST Á « conventional corn silage-based total mixed ration »). Vingt-quatre bouvillons Angus croise´s (poids corporel initial 02589 23,2 kg) dans des enclos individuels ont e´te´utilise´s dans un design comple`tement ale´atoire (n 012). L'ingestion des matie`res se`ches (DM Á « dry matter ») ne diffe´rait pas entre les traitements. Les bouvillons alimente´s a`la die`te BMRT tendaient vers de plus grands gains moyens quotidiens (ADG Á « average daily gain »; 1,54 c. 1,42 kg jour (1 ; P00,09) et indices de consommation (0,165 c. 0,146; P00,07) par rapport a`ceux ayant rec¸u la die`te CCST. L'alimentation a`la die`te BMRT a augmente´la concentration d'acides gras volatils totaux (VFA Á « volatile fatty acid ») (P00,01) par rapport a`la die`te CCST, tandis qu'elle a diminue´la proportion molaire d'ace´tate (P B0,01) et a augmente´la proportion de propionate (P00,01), ayant comme re´sultat une diminution du ratio ace´tate a`propionate par rapport a`la die`te CCST (PB0,01). Les bouvillons nourris a`la die`te BMRT ont vu une augmentation de leur marge d'aliments (P 00,05) et de leurs retours...

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“…Proportion of VFA, particularly acetate to propionate ration is influenced by nature of feed entering the rumen. Acetate proportion is greater when animals consume fibrous diet and, conversely, propionate proportion is greater with high concentrate diet (Gonzalez et al, 2012;Li et al, 2014). Apparently since both materials are beans, which are among concentrate categories, acetate and propionate proportions to total VFA in the present experiment were insignificant.…”

Section: Resultsmentioning

confidence: 42%

“…between 6.0 to 7.0. Rumen pH below 5.6 or 5.0 is considered as an indication for sub-acute or acute acidosis, respectively, and such condition may be more prevalent in animals consuming a high proportion of grains like in feedlot (Gonzalez et al, 2012). Lower pH found in the incubation of redbean is due to greater carbohydrate content (particularly non-fiber carbohydrate) in the bean as compared to soybean which is rich in CP and EE.…”

Section: Resultsmentioning

confidence: 99%

Protein Fractionation and Utilization of Soybean and Redbean as Affected by Different Drying Temperature

et al. 2017

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The objective of this study was to investigate the effect of drying temperatures on chemical composition, rumen fermentation, and digestibility of soybean and redbean (in vitro). Soybean and redbean were dried in an oven set at four different drying temperatures: 50, 60, 70, and 80 o C for 24 h in three replicates. The dried samples were then grilled and used further for chemical composition determination (proximate analysis, Van Soest analysis, and protein fraction) and in vitro rumen fermentation assay. Parameters measured in the in vitro assay were gas production, digestibility, pH, ammonia, and volatile fatty acids (VFA). Data obtained were analyzed by using analysis of variance and a posthoc test namely Duncan's multiple range test. Results showed that neutral detergent insoluble crude protein (NDICP) content was increased at higher drying temperature (70 or 80 o C) for both soybean and redbean (P<0.05). Similar to NDICP, higher temperature led to a greater acid detergent insoluble crude protein (ADICP) of soybean as well as those of redbean (P<0.05). Higher temperature decreased gas production rate (GPR) of both beans (P<0.05). Drying of soybean at 70 or 80 o C decreased crude protein digestibility (CPD) of soybean more than those of dried at 50 or 60 o C (P<0.05). Higher drying temperature resulted in a lower NH3 concentration of both beans (P<0.05). In conclusion, drying temperature at 50 or 60 o C was considered to be safe to maintain the nutritional quality of soybean and redbean.

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Ruminal acidosis in feedlot cattle: Interplay between feed ingredients, rumen function and feeding behavior (a review)

Cited by 203 publications

References 86 publications

Ruminal pH and temperature, papilla characteristics, and animal performance of fattening calves fed concentrate or maize silage-based diets

Ruminal pH and temperature, papilla characteristics, and animal performance of fattening calves fed concentrate or maize silage-based diets

Feeding a brown midrib corn silage-based diet to growing beef steers improves growth performance and economic returns

Protein Fractionation and Utilization of Soybean and Redbean as Affected by Different Drying Temperature

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