A5084342491- Genetic and phenotypic traits in livestock
- Ruminant Nutrition and Digestive Physiology
- Reproductive Physiology in Livestock
- Effects of Environmental Stressors on Livestock
- Muscle metabolism and nutrition
- Diet and metabolism studies
- Animal Nutrition and Physiology
- Animal health and immunology
- Exercise and Physiological Responses
- Animal Genetics and Reproduction
- Genetic Mapping and Diversity in Plants and Animals
- Nematode management and characterization studies
- Genetics and Plant Breeding
- Livestock Management and Performance Improvement
- Nuts composition and effects
- Adipose Tissue and Metabolism
- Agriculture Sustainability and Environmental Impact
- Meat and Animal Product Quality
- Animal Nutrition and Health
- Veterinary Medicine and Surgery
- Helminth infection and control
- Liver Disease Diagnosis and Treatment
- Veterinary Equine Medical Research
- Plant and fungal interactions
- Genomics, phytochemicals, and oxidative stress
University of Guelph
2016-2025
Food & Nutrition
2025
Trouw Nutrition (Brazil)
2020-2024
Pfizer (United Kingdom)
1993
Abstract Camelina sativa is an oilseed crop rich in α-linolenic acid (ALA), n-3 fatty (FA), and resistant to harsh climates pests. Previously, supplementation with camelina oil (CAM) horses had no adverse effects on basic health parameters comparable skin coat as both flaxseed (FLX) canola (OLA). Further, the plasma FA profile of was reflective their respective treatment oil. The objective this study assess dietary CAM profile, immune, inflammatory responses compared two commonly used oils...
The economic importance of genetically improving feed efficiency has been recognized by cattle producers worldwide. It the potential to considerably reduce costs, minimize environmental impact, optimize land and resource use efficiency, improve overall industry’s profitability. Feed is a complex trait that can be described as units product output (e.g., milk yield) per unit input. main objective this review paper present an overview genetic physiological mechanisms underlying utilization in...
Genetic selection can be a feasible method to help mitigate enteric methane emissions from dairy cattle, as emission-related traits are heritable and genetic gains persistent cumulative over time. The objective of this study was estimate heritability emission phenotypes the phenotypic correlations between them in Holstein cattle. We used 1765 individual records obtained 330 cattle two Canadian herds. Methane were measured using GreenFeed system, three analyzed: amount daily produced (g/d),...
While there is generally no consensus about how nutrients determine milk synthesis in the mammary gland, it likely that mechanistic target of rapamycin (mTOR) complex 1 (mTORC1) plays a role as key integrator nutritional and mitogenic signals can influence multitude catabolic anabolic pathways. The objectives this study were to evaluate acute changes (<24 h) translational signaling, addition chronic (14 d) gland structure composition, response severe feed restriction. Fourteen lactating...
Abstract The objective of this study was to compare the effects post-ruminal provision Ca-butyrate (CaB) when delivered via abomasal dosing, and Ca-gluconate (CaG) provided ruminally using a rumen protected form or an unprotected dosing on short-chain fatty acid (SCFA) concentration throughout GIT, nutrient digestibility, GIT barrier function, ruminal SCFA absorption, morphometrics, intestinal brush border enzyme activity, blood parameters for beef heifers. Thirty-two heifers fitted with...
Inclusion of urea in dairy cattle diets is often limited by negative effects high levels feed on dry matter intake (DMI) and efficiency rumen N utilization. We hypothesized that supplying postruminally would mitigate these limitations allow greater inclusion diets. Four rumen-fistulated Holstein-Friesian cows (7 ± 2.1 lactations, 110 30.8 d milk; mean standard deviation) were randomly assigned to a 4 × Latin square design examine DMI, milk production composition, digestibility, fermentation,...
There is growing evidence suggesting that by improving gut integrity and function, less energy partitioned toward immune responses related to xenobiotic infiltration, sparing for productive purposes. Gluconic acid its salts have previously shown prebiotic effects in the lower of nonruminant animals, where they serve as a precursor butyrate, although ruminants limited. Butyrate fermentative precursors demonstrated multiple beneficial gastrointestinal ecology, morphology, such stimulation...
Abstract This research communication reports the responses to supplementing dairy cattle with a hydrogenated fat-embedded calcium gluconate feed additive. The role of hindgut health in ruminant performance and wellbeing is an area growing interest. Various prebiotic compounds have been used promote lower gut various non-ruminant species. Calcium gluconate, compound, has previously observed increase milk fat yield when fed ruminants form capable resisting fermentation rumen, though...
A 305-d lactation followed by a 60-d dry period has traditionally been considered economically optimal, yet dairy cows in modern intensive systems are frequently dried off while still producing significant quantities of milk. Managing for an extended reported production, welfare and economic benefits, but not all suitable lactation. Implementation strategy on-farm could benefit from use decision support system, based on mathematical model, that can identify during early have high likelihood...
Abstract Gluconate salts have been identified as a butyrate precursor when fed to non-ruminant species and may increase the concentration in large intestine supporting gastrointestinal health development. The objective of this study was evaluate dose response hydrogenated fat-embedded calcium gluconate (HFCG) on performance tract (GIT) development growing lambs. Thirty-two wether lambs were used randomized complete block design assigned 1 4 treatments differing inclusion HFCG: 0.0% (CON),...
Hydrogenated fat-embedded calcium gluconate (HFCG), a prebiotic mixture designed to target the hindgut, has improved milk and component yields when supplemented in mid-lactation cows, likely due hindgut health. The objective of this study was evaluate production responses HFCG fed dairy cattle over full lactation. Seventy-four Holstein cows (21 primiparous, 53 multiparous) were used randomized complete block design comparing supplementation with (approximately 16 g/day supplement delivering...
Genetic selection for improved feed efficiency in dairy cattle has received renewed attention over the last decade to address needs of a growing global population. As milk yield is critical component metrics animals, our objective was evaluate associations between primiparous Holstein and parameters mathematical model describing individual lactation curves. The Dijkstra curve fit records from 34 heifers with previously estimated measures efficiency. We found that optimal achieved using daily...
Irregular milking intervals in automated systems contribute to additional variation daily milk yield records comparison those derived from using regular intervals. Various methods have been developed estimate 24-h adjusted yields, though they are not well suited for the evaluation of serial data, particularly when span calendar days. The objective this study was develop a methodology yields by adjusting irregular Using data collected an system (AMS), total at given event and elapsed time...
While the ability to continuously measure ruminal pH has been developed, its use is limited by on-farm practicality. Being able predict with an orally bolus-dosed reticular probe would add increased functionality existing technology and aid in diagnosis of SARA. The objective this study was develop a model time course from continuous measurements. recorded every 5 min for 15 d both reticulum rumen 4 Hereford crossbred heifers (291 ± 8kg BW) as proportion concentration diet 3 50 60, 70, 80,...
Twenty-one beef heifers were used in a randomized complete block design lasting 206 ± 8 day (mean SD) to evaluate dry matter intake (DMI), growth, and gastrointestinal tract carcass characteristics with increasing dose of dietary hydrogenated fat-embedded calcium gluconate (HFCG). Dietary treatments included HFCG at: 0.0% (CON), 0.09% (CG09), or 0.18% (CG18) DM. Heifers fed individually fecal samples collected on d 171 192. Gastrointestinal tissue, digesta, merit, meat quality sensory...
Pulse ingredients often replace grains in grain-free dog diets owing to their high-protein content. However, research ascertain the benefit of this modification is limited.
Abstract As n-6 and n-3 fatty acids (FA) have pro- anti-inflammatory effects, respectively, supplemental oils the potential to impact inflammation, immune response, skin coat health. This study aimed evaluate effects of camelina (CAM), in comparison canola (OLA) flaxseed (FLX) oil on FA profile, response horses. Horses [n = 24; 14.2 ± 4.8 yr; 518 63 kg body weight (BW)] were acclimated sunflower over 4 wk. Groups balanced by location, age, weight, sex, breed randomly assigned one three...
Abstract During transport to and receiving at feedlots, cattle are exposed a variety of stressors, including changes in social structure due separation mixing groups, handling, lack access feed water for extended periods time. These stressors often result loss body mass dehydration, which if not adequately addressed upon feedlot arrival, may increased morbidity mortality. The objectives this experiment were evaluate weight (BW) intake supplemented with an electrolyte solution arrival....