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Ribeiro RS, Silva AS, Diavão J, Sacramento JP, Minighin D, Tomich TR, Machado FS, Campos MM, Pereira LGR, Maurício RM, Chaves AV. Ration particle size has different effects on digestive but not production parameters in higher-yielding (Holstein) compared to lower-yielding (Girolando) cows. J DAIRY RES 2024; 91:25-30. [PMID: 38706314 DOI: 10.1017/s0022029924000207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
The aim of the study was to evaluate the effect of total mixed ration particle size (length) and breed of cow on intake dynamics, animal performance and CH4 emissions, comparing high yielding Holstein and low yielding Girolando cows. The experimental design was 2 × 2 Latin Square arranged as a crossover factorial scheme with two diets (short particle size, SPS and long particle size, LPS) and the two breed compositions. The design comprised two periods of 26 d each, where all data collection was performed at cow level. No influence of the particle size occurred for the passage rate, neutral detergent fiber digestibility, performance and milk composition, methane emissions or ruminal fermentation parameters. Girolando cows had greater dry matter intake (DMI) when fed SPS, while Holsteins had the same (P < 0.05). Girolando cows had lower dry matter digestibility when fed LPS compared to SPS, while Holsteins had the opposite effect (P < 0.05). Also, the digestibility of crude protein and non-fibrous carbohydrates decreased in Girolando cows fed LPS, but not in Holsteins (P < 0.05). Girolando cows reduced DMI by 10.6% when fed LPS diet (P < 0.05). Girolando had an increased eating rate (+24 g of DM/min; P < 0.05) compared to Holstein cows, but Holstein cows had a lower CH4 intensity (by 29.7%: P < 0.05). Girolando cows increased the dry matter intake when fed a diet with short particle size, while the same did not happen in Holsteins. Dry matter digestibility increased in Holsteins when fed long particle size, while the opposite was observed in Girolando cows. Nutrient digestibility was reduced in Girolando cows when fed short particle size. Particle size did not influence eating time, eating rate, feed trough visits, visits with intake, milk yield and composition regardless of the breed. Reducing particle size increased CH4 intensity in both breeds.
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Affiliation(s)
- Rafael Sandin Ribeiro
- Department of Biosystems and Engineering, Federal University of São João del-Rei, São João del-Rei, MG, Brazil
| | | | | | - João Paulo Sacramento
- Department of Biosystems and Engineering, Federal University of São João del-Rei, São João del-Rei, MG, Brazil
| | - Duarte Minighin
- Department of Biosystems and Engineering, Federal University of São João del-Rei, São João del-Rei, MG, Brazil
| | | | | | | | - Luiz Gustavo Ribeiro Pereira
- Embrapa Dairy Cattle, Juiz de Fora, MG, Brazil
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Rogério Martins Maurício
- Department of Biosystems and Engineering, Federal University of São João del-Rei, São João del-Rei, MG, Brazil
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Gindri M, Moraes LEFD, Teixeira IAMA. Prediction models of reticulorumen particles and solutes passage rate in growing goats. Animal 2023; 17 Suppl 5:100970. [PMID: 37743149 DOI: 10.1016/j.animal.2023.100970] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 08/16/2023] [Accepted: 08/24/2023] [Indexed: 09/26/2023] Open
Abstract
The reticulorumen (RR) fractional passage rate (kp; /h) of particles and solutes plays an important role in fiber digestion, methane production, and microbial yield. However, none of the available models for predicting RR kp consider individuals' characteristics of growing goats. The objective was to develop empirical models for predicting the RR kp of particles and solutes in growing goats. Our database involved 175 individual records of castrated males (n = 61), females (n = 57), and intact males (n = 57) growing Saanen goats fed ad libitum, 75% or 50% of ad libitum. Goats were slaughtered around 15, 22, 30, 37, or 45 kg BW. We used Akaike's information criterion to select the best prediction models. We evaluated the predictive ability of these models using Lin's concordance correlation coefficient (CCC) and RMSE of prediction (RMSPE) in a 4-fold cross-evaluation. The DM intake (DMI; kg/day), potentially digestible NDF intake (pdNDFI) level (g/kg BW), and RR wet pool size (kg) demonstrated similar importance in predicting RR kp of solutes (CCC = 0.59; RMSPE = 0.050 /h or 34.43%). However, when RR wet pool size was not included in the model, RR kp of solutes could still be precisely and accurately predicted using only DMI level (g/kg BW) (CCC = 0.47; RMSPE = 0.053 /h or 36.58%). The RR wet tissues and wet pool size (kg), NDF intake (NDFI) (kg/day), and indigestible NDFI (iNDFI):NDFI ratio were important predictors of RR kp of particles (CCC = 0.51; RMSPE = 0.0064 /h or 25.43 %). However, when RR wet tissues and wet pool size were not included in the model, iNDFI:NDFI ratio, NDFI level (g/kg BW), and RR kp of solutes presented greater importance in predicting RR kp of particles (CCC = 0.20; RMSPE = 0.0074 /h or 29.55%). Sex was not a significant predictor variable for the selected models. In summary, the RR kp of solutes was more dependent on feed intake level while the RR kp of particles was more dependent on diet composition and RR kp of solutes. Our models were precise and accurate for predicting RR kp of solutes (CCC = 0.57 and 0.47; RMSPE = 0.051 and 0.054 /h) and particles (CCC = 0.48 and 0.17; RMSPE = 0.0066 and 0.0076 /h) after cross-evaluation. This suggests that our models can be integrated into feeding systems with mechanistic approaches that simulate other reticulorumen functions, such as digestion, microbial growth, and methane emission.
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Affiliation(s)
- M Gindri
- Department of Animal Sciences, São Paulo State University, Jaboticabal, SP 14884-900, Brazil
| | - L E F D Moraes
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - I A M A Teixeira
- Department of Animal, Veterinary, and Food Sciences, University of Idaho, Twin Falls, ID 83301, USA.
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The Effect of Neem Leaf Supplementation on Growth Performance, Rumen Fermentation, and Ruminal Microbial Population in Goats. Animals (Basel) 2023; 13:ani13050890. [PMID: 36899747 PMCID: PMC10000191 DOI: 10.3390/ani13050890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/04/2023] [Accepted: 02/27/2023] [Indexed: 03/05/2023] Open
Abstract
This study aims to investigate the effect of neem leaf supplementation on the feed intake, digestibility, performance, fermentation characteristics, and ruminal microbes in goats. We included 24 Anglo-Nubian Thai native male goats with a body weight of 20 ± 2.0 kg, using 2 × 2 factorial in a completely randomized design for the following four treatments: (1) control, (2) control + 15% PEG in the concentrate, (3) 6% NL in concentrate, and (4) 6% NL + 15% PEG in concentrate. The results show that supplementation with 6% NL + 15% PEG in the concentrate had a higher (p < 0.05) feed intake gDM/d, % BW, g/kgBW0.75, nutrient intake, nutrient digestion, weight change, and ADG than did the goats that were fed with 0% NL + 0% PEG, 0% NL + 15% PEG, and 6% NL + 0% PEG in concentrate, respectively. The feeding with 6% NL + 15% PEG had a higher (p < 0.05) level of propionic acid at 2 and 4 h post feeding compared to the other treatments. Supplementation with 6% NL + 15% PEG in the concentrate had the lowest (p < 0.05) methanogen, protozoa, blood urea nitrogen, ammonia nitrogen, acetic acid, and butyric acid, as well as a lower ratio of acetic acid to propionic acid at 2 and 4 h post feeding than the other treatments. However, supplementation with 6% NL + 15% PEG in concentrate had the highest values of Butyrivibrio fibrisolvens and Streptococcus gallolyticus at 2 and 4 h post feeding compared to the other treatments (p < 0.05). Collectively, this study indicates that neem leaf supplements can increase growth performance and propionic acid and can modulate the abundance of Butyrivibrio fibrisolvens and Streptococcus gallolyticus. Thus, neem leaf could potentially be a good supplement for goat feed.
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Operational conditions and potential benefits of grains micronization for ruminant: A review. Anim Feed Sci Technol 2022. [DOI: 10.1016/j.anifeedsci.2022.115285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Disentangling digesta passage rate in the gastrointestinal tract of male and female growing goats fed varying feeding levels using multivariate and metanalytical approaches. Livest Sci 2021. [DOI: 10.1016/j.livsci.2021.104645] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Gindri M, Leite RF, Härter CJ, da Silva SP, St-Pierre N, Fernandes MHMDR, Berchielli TT, Teixeira IAMDA. Body weight and sex effects on digesta mean retention time in growing Saanen goats. Transl Anim Sci 2020; 4:txaa028. [PMID: 32705026 PMCID: PMC7284118 DOI: 10.1093/tas/txaa028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 03/11/2020] [Indexed: 11/12/2022] Open
Abstract
Despite the important role of digesta mean retention time (MRT) on digestive efficiency of ruminants, it is poorly investigated in total gastrointestinal tract (GIT) of growing ruminants, especially in goats. The objective of this study was to evaluate the effect of body weight (BW) and sex on GIT MRT of particles and solutes in growing Saanen goats. A dataset from two studies, comprising 103 individual records of castrated males (n = 36), females (n = 34), and intact males (n = 33) Saanen goats slaughtered at 15, 22, 30, 37, and 45 kg BW, was used. Goats were fed basically with total mixed ration composed by dehydrated corn plant (Zea mays) milled to pass a 10-mm screen, cracked corn grain, and soybean (Glycine max) meal. Variables evaluated were BW, feed intake, feed intake level, composition of ingested diet, wet weight of GIT tissues, wet digesta pool size, digesta composition (dry matter and neutral detergent fiber [NDF]), indigestible NDF:NDF ratio of ingested diet and GIT digesta, MRT of particles (MRTiNDF) and solutes (MRTCr), and reticulorumen selectivity factors (large particles/solutes). Reticulorumen, omasum, abomasum, small intestine, cecum, and colon-rectum segments were evaluated. The dataset was analyzed as mixed models considering sex, BW, and sex × BW interaction as fixed effects, and study and residual error as random effects. Sex did not affect MRTiNDF in any GIT segments. Females and intact males presented similar reticulorumen MRTCr (5.6 h; P = 0.92) and they presented lower reticulorumen MRTCr than castrated males (7.0; P ≤ 0.04). Total GIT MRTCr was similar between castrated males and females (15.7 h; P = 0.11) and between females and intact males (14.2 h; P = 0.76). Body weight (BW) did not affect MRTiNDF in reticulorumen and colon-rectum and total GIT MRTCr (P ≥ 0.11). Reticulorumen and omasum MRTCr increased as BW increased (P < 0.01), and abomasum MRTCr decreased as BW increased (P = 0.02). Feed intake, and wet tissues and wet pool size of all GIT segments increased as BW increased, except abomasum wet pool size (P ≤ 0.01). The mechanism related to sex effect on MRT has to be elucidated. Reticulorumen MRTiNDF and total GIT MRTCr were modulated by intake and capacity of reticulorumen and GIT, respectively. On the other hand, reticulorumen MRTCr seemed to be regulated by reticulo-omasal orifice opening and saliva secretion.
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Affiliation(s)
- Marcelo Gindri
- Department of Animal Sciences, Universidade Estadual Paulista, Jaboticabal, SP, Brazil
| | | | - Carla Joice Härter
- Department of Animal Sciences, Universidade Estadual Paulista, Jaboticabal, SP, Brazil
| | - Simone Pedro da Silva
- Department of Animal Sciences, Universidade Estadual Paulista, Jaboticabal, SP, Brazil
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Soares P, Gouveia L, Silva T, O. Filho E, Carvalho F, Batista Â, Lima Júnior D, Cardoso D. Metabolic dynamics of native lambs fed with Tifton 85 hay or Maniçoba hay associated with the spineless cactus. ARQ BRAS MED VET ZOO 2020. [DOI: 10.1590/1678-4162-11399] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ABSTRACT The objective of this study was to evaluate the metabolic response of native lambs fed Tifton 85 hay (Cynodon dactylon) or Maniçoba hay (Manihot pseudoglaziovii) associated with spineless cactus (Nopalea cochenillifera Salm Dyck). Sixteen Morada Nova lambs were used, with a mean initial weight of 19.36±1.48kg, distributed in a randomized block design, with two treatments and eight replications. Dry matter intake was higher for lambs fed Maniçoba hay compared to Tifton hay, while the body weight at slaughter was not influenced by diets. Regarding the blood metabolites, only the serum concentration of urea was influenced, with higher value observed in the lambs that fed the diet containing Tifton hay. When analyzing blood biomarkers, in the different biweekly collections, a linear increase in the blood concentration of urea, glucose, fructosamine, alkaline phosphatase and sodium was observed, as well as a quadratic effect for serum potassium. The other blood metabolites were not influenced in function of the collection days. The replacement of Tifton 85 hay for Maniçoba hay does not cause negative changes in the dynamics of different biomarkers and presents itself as a promising forage resource.
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Affiliation(s)
- P.C. Soares
- Universidade Federal Rural de Pernambuco, Brazil
| | | | - T.G.P. Silva
- Universidade Federal Rural de Pernambuco, Brazil
| | | | | | | | | | - D.B. Cardoso
- Universidade Federal Rural de Pernambuco, Brazil
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Tedeschi LO. ASN-ASAS SYMPOSIUM: FUTURE OF DATA ANALYTICS IN NUTRITION: Mathematical modeling in ruminant nutrition: approaches and paradigms, extant models, and thoughts for upcoming predictive analytics1,2. J Anim Sci 2019; 97:1921-1944. [PMID: 30882142 PMCID: PMC6488328 DOI: 10.1093/jas/skz092] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 03/17/2019] [Indexed: 11/14/2022] Open
Abstract
This paper outlines typical terminology for modeling and highlights key historical and forthcoming aspects of mathematical modeling. Mathematical models (MM) are mental conceptualizations, enclosed in a virtual domain, whose purpose is to translate real-life situations into mathematical formulations to describe existing patterns or forecast future behaviors in real-life situations. The appropriateness of the virtual representation of real-life situations through MM depends on the modeler's ability to synthesize essential concepts and associate their interrelationships with measured data. The development of MM paralleled the evolution of digital computing. The scientific community has only slightly accepted and used MM, in part because scientists are trained in experimental research and not systems thinking. The scientific advancements in ruminant production have been tangible but incipient because we are still learning how to connect experimental research data and concepts through MM, a process that is still obscure to many scientists. Our inability to ask the right questions and to define the boundaries of our problem when developing models might have limited the breadth and depth of MM in agriculture. Artificial intelligence (AI) has been developed in tandem with the need to analyze big data using high-performance computing. However, the emergence of AI, a computational technology that is data-intensive and requires less systems thinking of how things are interrelated, may further reduce the interest in mechanistic, conceptual MM. Artificial intelligence might provide, however, a paradigm shift in MM, including nutrition modeling, by creating novel opportunities to understand the underlying mechanisms when integrating large amounts of quantifiable data. Associating AI with mechanistic models may eventually lead to the development of hybrid mechanistic machine-learning modeling. Modelers must learn how to integrate powerful data-driven tools and knowledge-driven approaches into functional models that are sustainable and resilient. The successful future of MM might rely on the development of redesigned models that can integrate existing technological advancements in data analytics to take advantage of accumulated scientific knowledge. However, the next evolution may require the creation of novel technologies for data gathering and analyses and the rethinking of innovative MM concepts rather than spending resources in collecting futile data or amending old technologies.
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Affiliation(s)
- Luis O Tedeschi
- Department of Animal Science, Texas A&M University, College Station, TX
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Beauchemin KA. Invited review: Current perspectives on eating and rumination activity in dairy cows. J Dairy Sci 2018; 101:4762-4784. [PMID: 29627250 DOI: 10.3168/jds.2017-13706] [Citation(s) in RCA: 181] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 01/11/2018] [Indexed: 11/19/2022]
Abstract
Many early studies laid the foundation for our understanding of the mechanics of chewing, the physiological role of chewing for the cow, and how chewing behavior is affected by dietary characteristics. However, the dairy cow has changed significantly over the past decades, as have the types of diets fed and the production systems used. The plethora of literature published in recent years provides new insights on eating and ruminating activity of dairy cows. Lactating dairy cows spend about 4.5 h/d eating (range: 2.4-8.5 h/d) and 7 h/d ruminating (range: 2.5-10.5 h/d), with a maximum total chewing time of 16 h/d. Chewing time is affected by many factors, most importantly whether access to feed is restricted, intake of neutral detergent fiber from forages, and mean particle size of the diet. Feed restriction and long particles (≥19 mm) have a greater effect on eating time, whereas intake of forage neutral detergent fiber and medium particles (4-19 mm) affects rumination time. It is well entrenched in the literature that promoting chewing increases salivary secretion of dairy cows, which helps reduce the risk of acidosis. However, the net effect of a change in chewing time on rumen buffing is likely rather small; therefore, acidosis prevention strategies need to be broad. Damage to plant tissues during mastication creates sites that provide access to fungi, adhesion of bacteria, and formation of biofilms that progressively degrade carbohydrates. Rumination and eating are the main ways in which feed is reduced in particle size. Contractions of the rumen increase during eating and ruminating activity and help move small particles to the escapable pool and into the omasum. Use of recently developed low-cost sensors that monitor chewing activity of dairy cows in commercial facilities can provide information that is helpful in management decisions, especially when combined with other criteria. Although accuracy and precision can be somewhat variable depending on sensor and conditions of use, relative changes in cow behavior, such as a marked decrease in rumination time of a cow or sustained low rumination time compared with a contemporary group of cows, can be used to help detect estrus, parturition, and some illnesses. This review provides a comprehensive understanding of the dietary, animal, and management factors that affect eating and ruminating behavior in dairy cows and presents an overview of the physiological importance of chewing with emphasis on recent developments and practical implications for feeding and managing the modern housed dairy cow.
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Affiliation(s)
- K A Beauchemin
- Agriculture and Agri-Food Canada, Lethbridge, Alberta, Canada T1J 4B1.
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Development of an improved representation of rumen digesta outflow in a mechanistic and dynamic model of a dairy cow, Molly. Ecol Modell 2015. [DOI: 10.1016/j.ecolmodel.2015.06.042] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Liquid residue of cassava as a replacement for corn in the diets of sheep. Trop Anim Health Prod 2015; 47:1083-8. [PMID: 25899663 DOI: 10.1007/s11250-015-0830-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 04/15/2015] [Indexed: 10/23/2022]
Abstract
The effect of the replacement of corn with the liquid residue of cassava was evaluated at levels of 0, 25, 50, 75, and 100% in the diets of sheep on the intake and nutrient digestibility, weight gain, and carcass characteristics. Forty non-castrated crossbred Santa Ines sheep at 4 months of age and an initial body weight of 19.5 ± 2.5 kg were slaughtered after 90 days at the feedlot. A quadratic effect was found for intake of dry matter (DM), organic matter (OM), non-fiber carbohydrates (NFC), and digestible OM, with estimated values of 1130, 1080, 558, and 777 g/day at 11.2, 11.9, 30.8, and 2.18% of replacing corn with liquid residue of cassava, respectively. However, the intake of crude protein (CP) and neutral detergent fiber (NDF) decreased linearly around 105 to 45.3 g CP/day and 413 to 284 g NDF/day. The same effect was found for digestibility of DM (715 to 649 g/kg), OM (725 to 669 g/kg), CP (801 to 759 g/kg), and NDF (486 to 379 g/kg), which decreased linearly as the dietary liquid residue of cassava increased. The maximum average daily gain (174 g/day) was estimated with a 22.4% replacement level. Liquid residue of cassava can replace up to 25% of the corn in the diets of sheep, since it was possible to obtain a gain above 100 g/day, which is considered to be satisfactory.
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Benvenutti MA, Coates DB, Bindelle J, Poppi DP, Gordon IJ. Can faecal markers detect a short term reduction in forage intake by cattle? Anim Feed Sci Technol 2014. [DOI: 10.1016/j.anifeedsci.2014.05.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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INVITED REVIEW: Applied protein nutrition of ruminants—Current status and future directions1. ACTA ACUST UNITED AC 2014. [DOI: 10.15232/s1080-7446(15)30102-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Lee C, Hristov A. Short communication: Comparison of 3 solid digesta passage markers in dairy cows. J Dairy Sci 2014; 97:1725-9. [DOI: 10.3168/jds.2013-7129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Accepted: 12/05/2013] [Indexed: 11/19/2022]
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Giuberti G, Gallo A, Masoero F, Ferraretto LF, Hoffman PC, Shaver RD. Factors affecting starch utilization in large animal food production system: A review. STARCH-STARKE 2013. [DOI: 10.1002/star.201300177] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Gianluca Giuberti
- Institute of Feed and Food Science and Nutrition; Università Cattolica del Sacro Cuore; Piacenza Italy
| | - Antonio Gallo
- Institute of Feed and Food Science and Nutrition; Università Cattolica del Sacro Cuore; Piacenza Italy
| | - Francesco Masoero
- Institute of Feed and Food Science and Nutrition; Università Cattolica del Sacro Cuore; Piacenza Italy
| | | | | | - Randy D. Shaver
- Department of Dairy Science; University of Wisconsin; Madison WI USA
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