Federico Tarnonsky
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View article: PSI-19 Plasma haptoglobin concentration as a potential biomarker for stress caused by horn fly infestation in lactating beef cows.
PSI-19 Plasma haptoglobin concentration as a potential biomarker for stress caused by horn fly infestation in lactating beef cows. Open
The horn fly parasite has a negative impact on cattle because of its irritating and painful bites, which can reduce animal performance and welfare due to the resultant stress. This experiment aimed to evaluate the relationship between plas…
View article: 276 Parasite control as a potential strategy to mitigate methane emissions in lactating beef cows.
276 Parasite control as a potential strategy to mitigate methane emissions in lactating beef cows. Open
The reduction in enteric methane (CH4) emissions from cattle continues to be one of the top priorities in order to contribute to the sustainability of beef production in the U.S. The cow-calf segment of the beef industry is responsible for…
View article: 288 Impact of Brahman genetics on feed efficiency and methane emissions of heifers with implications for the Florida cow-calf producers.
288 Impact of Brahman genetics on feed efficiency and methane emissions of heifers with implications for the Florida cow-calf producers. Open
Feed efficiency is one of the most important traits for livestock selection. While Bos taurus cattle often exhibit superior performance and higher-quality products than Bos indicus, they are more susceptible to harsh environmental conditio…
View article: PSVI-18 Water intake analysis of high-risk beef calves.
PSVI-18 Water intake analysis of high-risk beef calves. Open
Water is a critical factor in livestock health and performance. While water intake (WI) models exist for most beef cattle categories, limited research has focused on newly received calves at an individual level. This study analyzed WI, dry…
View article: 292 Characterizing methane emissions through In vivo and ex vivo models during a transition from a high-forage to a high-grain diet.
292 Characterizing methane emissions through In vivo and ex vivo models during a transition from a high-forage to a high-grain diet. Open
Most studies measuring methane (CH4) emissions from beef cattle have identified a transition period during which animals adapt from a high-forage to a high-grain diet. During this transition, methane production progressively decreases and …
View article: 289 Efficacy of increasing levels of a urea-biuret mixture on beef cattle performance and enteric methane emissions.
289 Efficacy of increasing levels of a urea-biuret mixture on beef cattle performance and enteric methane emissions. Open
Supplementation with non-protein nitrogen (NPN) has been used as an alternative to supply nitrogen in low-protein diets for ruminants. Urea is the primary source of NPN supplemented to cattle, but its rapid degradation rate in the rumen li…
View article: PSXIV-17 Red seaweed Gracilaria spp. can mitigate enteric methane emissions in beef cattle.
PSXIV-17 Red seaweed Gracilaria spp. can mitigate enteric methane emissions in beef cattle. Open
Enteric methane (CH4) in ruminants might lead to losses of dietary gross energy, reducing production efficiency. Red seaweed contains bromoform, a chemical known for decreasing enteric CH4 emissions in ruminants. This study evaluated the e…
View article: 177 Impact of feed and drench multi-additive formulations on animal health, performance and water intake in high-risk beef cattle
177 Impact of feed and drench multi-additive formulations on animal health, performance and water intake in high-risk beef cattle Open
The receiving period in beef cattle production poses nutritional and health challenges, particularly for stressed high-risk newly arrived calves. Typically, feed intake in these calves is less than 1% of their body weight for several days …
View article: Sorghum Silage as a Feed Alternative for Backgrounding Heifers in Florida
Sorghum Silage as a Feed Alternative for Backgrounding Heifers in Florida Open
Sorghum has been gaining attention in Florida as a crop alternative harvested as whole plant silage for inclusion in backgrounding diets as the main roughage source to fill the forage gap in winter feeding programs. The objective of this p…
View article: Feeding rumen-protected choline during the periconceptional period programs postnatal phenotype of suckled beef calves
Feeding rumen-protected choline during the periconceptional period programs postnatal phenotype of suckled beef calves Open
View article: Effect of Cashew Nutshell Extract, Saponins and Tannins Addition on Methane Emissions, Nutrient Digestibility and Feeding Behavior of Beef Steers Receiving a Backgrounding Diet
Effect of Cashew Nutshell Extract, Saponins and Tannins Addition on Methane Emissions, Nutrient Digestibility and Feeding Behavior of Beef Steers Receiving a Backgrounding Diet Open
The beef industry contributes to greenhouse gas emissions through enteric methane emissions, exacerbating climate change. Anacardic acid in cashew nutshell extract (CNSE), saponins and tannins (ST) are plant secondary metabolites that show…
View article: 139 Impact of supplementing rumen-protected methionine during the periconceptional period in the post-weaning period in female calves
139 Impact of supplementing rumen-protected methionine during the periconceptional period in the post-weaning period in female calves Open
This study aimed to identify the impact of supplementing rumen-protected methionine (RPM) during the periconceptional period on beef cows in their progeny. Evidence suggests that changes in maternal nutrition in the periconceptional period…
View article: 79 Dietary buffer comparison and tannins supplementation modulating subacute ruminal acidosis and fermentation in beef cattle
79 Dietary buffer comparison and tannins supplementation modulating subacute ruminal acidosis and fermentation in beef cattle Open
As the demand of nutrients by the population will continue to grow over the years, efficient practices are required in the food chain to satisfy the demand. This practice involves the intensification of production systems. Moreover, intens…
View article: 144 Utilizing invasive pigweed (<i>Amaranthus Spinosus</i>) as a novel methane mitigation strategy in beef cattle feed: A sustainable approach
144 Utilizing invasive pigweed (<i>Amaranthus Spinosus</i>) as a novel methane mitigation strategy in beef cattle feed: A sustainable approach Open
By 2050, the US beef industry must produce an extra 40 million tons of beef to satisfy the global demand, while reducing methane (CH4) emissions. This surplus of cattle will be provided mostly by cow-calf operations, which rely primarily o…
View article: Impact of Supplementing a Backgrounding Diet with Nonprotein Nitrogen on In Vitro Methane Production, Nutrient Digestibility, and Steer Performance
Impact of Supplementing a Backgrounding Diet with Nonprotein Nitrogen on In Vitro Methane Production, Nutrient Digestibility, and Steer Performance Open
Two experiments were conducted to evaluate the effect of nonprotein nitrogen (NPN) supplementation on in vitro fermentation and animal performance using a backgrounding diet. In experiment 1, incubations were conducted on three separate da…
View article: Non-protein nitrogen supplementation on in vitro fermentation profile, methane production, and microbial nitrogen synthesis in a corn silage-based substrate
Non-protein nitrogen supplementation on in vitro fermentation profile, methane production, and microbial nitrogen synthesis in a corn silage-based substrate Open
Non-protein nitrogen (NPN) supplements improve animal performance in backgrounding diets. However, there is scarce information regarding the effect of different NPN sources and combinations on ruminal fermentation profile. The current stud…
View article: Supplementation with avian-derived polyclonal antibodies against <i>Methanobrevibacter gottschalkii</i> and <i>M. ruminantium</i> decreases ex vivo methane production and modifies ruminal fermentation in Angus crossbred steers
Supplementation with avian-derived polyclonal antibodies against <i>Methanobrevibacter gottschalkii</i> and <i>M. ruminantium</i> decreases ex vivo methane production and modifies ruminal fermentation in Angus crossbred steers Open
The study aimed to investigate the effect of supplementing polyclonal antibodies (PAP) of avian origin against the ruminal methanogens Methanobrevibacter gottschalkii Ho (PAP-Ho) and M. ruminantium M1 (PAP-M1) on ruminal fermentation profi…
View article: 365 Effects of Supplementing Carinata Meal Compared with Cottonseed Meal on Performance, Carcass Characteristics, and Sensory Attributes in Beef Steers Consuming a Finish Diet
365 Effects of Supplementing Carinata Meal Compared with Cottonseed Meal on Performance, Carcass Characteristics, and Sensory Attributes in Beef Steers Consuming a Finish Diet Open
The value of carinata, a non-food oilseed crop, has been demonstrated as a high-quality jet fuel alternative and successful cover crop in the southeastern U.S.; however, research is limited regarding carinata as an alternative for commonly…
View article: 340 Ruminal Protozoa Viability Under Diverse Additives Using Trypan Blue Exclusion Method as an Alternative Counting Methodology
340 Ruminal Protozoa Viability Under Diverse Additives Using Trypan Blue Exclusion Method as an Alternative Counting Methodology Open
Beef cattle are a major contributor to methane (CH4) emissions. Enteric CH4 is produced by archaea, mostly hosted by ruminal protozoa, thus, changes in protozoa counts have been associated with CH4 production. Therefore, reliable ruminal p…
View article: 336 Evaluation of a <i>Bacillus</i> Spp. Probiotic on Beef Cattle Performance, Nutrient Digestibility and Enteric Methane Emissions
336 Evaluation of a <i>Bacillus</i> Spp. Probiotic on Beef Cattle Performance, Nutrient Digestibility and Enteric Methane Emissions Open
Direct-fed microbials have been used in an effort to improve livestock production efficiency and reduce environmental impact. Among other species, spore forming bacteria such as Bacillus spp. present handling and processing advantages to b…
View article: 208 Impact of Feeding a Novel Probiotic on Ruminal Fermentation, Methane Production, and Nutrient Utilization in Beef Cattle
208 Impact of Feeding a Novel Probiotic on Ruminal Fermentation, Methane Production, and Nutrient Utilization in Beef Cattle Open
The search for alternatives to mitigate enteric methane emissions remains a top priority to ensure the continued sustainability of the livestock industry. Exploration of new direct-fed microbials with potential in ruminant nutrition is an …
View article: PSIII-21 Effects of Supplementing Carinata Meal Compared with Cottonseed Meal on Performance, Intake, and Digestibility in Backgrounding Beef Heifers Consuming a Corn Silage-Based Diet
PSIII-21 Effects of Supplementing Carinata Meal Compared with Cottonseed Meal on Performance, Intake, and Digestibility in Backgrounding Beef Heifers Consuming a Corn Silage-Based Diet Open
The value of carinata, a non-food oilseed crop, has been demonstrated as a high-quality jet fuel alternative and successful cover crop in the southeastern U.S.; however, research is limited regarding carinata as an alternative for commonly…
View article: Increasing levels of Chlorella spp. on in vitro fermentation and methane production in a corn silage-base diet
Increasing levels of Chlorella spp. on in vitro fermentation and methane production in a corn silage-base diet Open
Increasing levels of Chlorella spp. on in vitro fermentation and methane production in a corn silage-base diet Incremento de los niveles de Chlorella spp. sobre la fermentación in vitro y la producción de metano en una dieta a base de ensi…
View article: Effects of Processing Methods and Inclusion Levels of Dried Garlic on In Vitro Fermentation and Methane Production in a Corn Silage-Based Substrate
Effects of Processing Methods and Inclusion Levels of Dried Garlic on In Vitro Fermentation and Methane Production in a Corn Silage-Based Substrate Open
Garlic (Allium sativum) contains secondary compounds that are known to modify rumen fermentation parameters and decrease methane (CH4) emissions. The objective was to evaluate the effects of increasing the inclusion levels and processing m…
View article: Effects of replacing corn silage with alfalfa haylage in growing beef cattle diets on performance during the growing and finishing period
Effects of replacing corn silage with alfalfa haylage in growing beef cattle diets on performance during the growing and finishing period Open
Corn silage is the predominant mechanically harvested forage source for feedlot cattle production in the United States because of high yield. Alternatively, because of multiple cuttings per year and lower annual cost, the use of alfalfa or…
View article: Effects of<i>Aspergillus oryzae</i>prebiotic on animal performance, nutrients digestibility, and feeding behavior of backgrounding beef heifers fed with either a sorghum silage- or a byproducts-based diet
Effects of<i>Aspergillus oryzae</i>prebiotic on animal performance, nutrients digestibility, and feeding behavior of backgrounding beef heifers fed with either a sorghum silage- or a byproducts-based diet Open
Eighty-four Angus crossbred heifers (13 ± 1 mo of age, 329.5 ± 61.92 kg of body weight [BW]) were used in a generalized randomized block design with a 2 × 2 factorial arrangement of treatments. The factors evaluated were: 1) diet type (who…
View article: Evaluation of carinata meal or cottonseed meal as protein sources in silage-based diets on behavior, nutrient digestibility, and performance in backgrounding beef heifers
Evaluation of carinata meal or cottonseed meal as protein sources in silage-based diets on behavior, nutrient digestibility, and performance in backgrounding beef heifers Open
Changing climatic conditions are imposing risks and diminishing yields in agriculture. Sorghum (Sorghum bicolor) silage is a feasible option for backgrounding beef cattle in terms of economic risk management and animal productivity when co…
View article: PSIV-B-16 Effects of Replacing Cottonseed Meal with Carinata Meal on Performance, Intake, and Digestibility in Backgrounding Beef Heifers Consuming a Corn Silage-Based Diet
PSIV-B-16 Effects of Replacing Cottonseed Meal with Carinata Meal on Performance, Intake, and Digestibility in Backgrounding Beef Heifers Consuming a Corn Silage-Based Diet Open
The value of carinata, a non-food oilseed crop, has been demonstrated as a high-quality jet fuel alternative and successful cover crop in the southeastern U.S.; however, research is limited regarding carinata as an alternative for commonly…
View article: PSI-19 Effect of Increasing Supplementation of Bacillus Spp. on in Vitro Ruminal Fermentation and Nutrient Digestibility
PSI-19 Effect of Increasing Supplementation of Bacillus Spp. on in Vitro Ruminal Fermentation and Nutrient Digestibility Open
Probiotics may be an effective alternative to antimicrobials in terms of modifying the ruminal microbial ecology to enhance the fermentative process and improving animal health and production. Although Bacillus spp. have demonstrated a gre…
View article: 338 The Impact of an Aspergillus Oryzae Prebiotic on Mineral Bioavailability in Multiparous Beef Cows Supplemented with Vitaferm Concept-aid
338 The Impact of an Aspergillus Oryzae Prebiotic on Mineral Bioavailability in Multiparous Beef Cows Supplemented with Vitaferm Concept-aid Open
This study aimed to evaluate the effect of supplementation with an Aspergillus oryzae prebiotic (AOP) fed from ~30 d pre-partum until 30 d post-partum, on mineral concentrations in blood, liver, colostrum, and milk of multiparous beef cows…