A5007316874- Ruminant Nutrition and Digestive Physiology
- Genetic and phenotypic traits in livestock
- Animal Nutrition and Physiology
- Meat and Animal Product Quality
- Antibiotic Resistance in Bacteria
- Pharmaceutical and Antibiotic Environmental Impacts
- Animal Behavior and Welfare Studies
- Bacteriophages and microbial interactions
- Animal Nutrition and Health
- Antibiotics Pharmacokinetics and Efficacy
- Microbial infections and disease research
- Spectroscopy Techniques in Biomedical and Chemical Research
- Phytase and its Applications
- Agricultural Systems and Practices
- Animal Law and Welfare
- Forensic Anthropology and Bioarchaeology Studies
- Food Industry and Aquatic Biology
- Fermentation and Sensory Analysis
- Agriculture and Biological Studies
- Animal Genetics and Reproduction
- Bipolar Disorder and Treatment
- Protein Hydrolysis and Bioactive Peptides
- Pharmacogenetics and Drug Metabolism
- Bioenergy crop production and management
- Infant Nutrition and Health
University of British Columbia
2018-2023
Loughborough University
2022
University of Nottingham
2022
University of Aberdeen
1951-1978
SUMMARY Eight research and teaching centres have co-operated in an experiment involving 132 sows. Six treatments were used, combining three levels of feeding pregnancy with two lactation. Pregnancy High 3−2 kg meal/day, Medium 2·4 kg/day Low 1·6 kg/day; lactation either a high level, 4·1 plus 0·2 kg/pig (h) or medium 2·3 (m) given. The sows maintained on the same nutritional regime for parities although inevitably some lost before completion trial. Sow live-weight gains directly related to...
Abstract Wine grape fungal community composition is influenced by abiotic factors including geography and vintage. Compositional differences may correlate with different wine metabolite sensory profiles, suggesting a microbial role in the shaping of wine's terroir, or regional character. While wine-associated has been studied extensively at sub-regional scale, it not explored detail on fine geographical scales over multiple harvests. Over two years, we examined communities Vitis Vinifera cv....
1. A feeding trial is described including four groups of cattle fed on grades I, II and III silages swedes, straw oats respectively. 2. The live-weight gains made are recorded, together with the rate dry-matter intake. 3. efficiency dry matter diets was calculated. 4. All three silage produced a significantly greater fattening than swedes plus oats. There no significant difference between values silage. 5. dressing percentages found for 100 silagefed 71 swede-fed given. swedefed yielded...
1. A feeding trial is described including four groups of cattle fed on silage only, two mixtures and roots, straw, hay oats. 2. The live-weight gains made are recorded together with the rate dry-matter intake. 3. efficiency dry matter diets was calculated. 4. Silage alone produced a significantly greater fattening than other three diets. 5. Cattle receiving roots in morning at night consumed 10·78% more night. 6. Calculation starch values showed that these higher when or 7. An experiment...
Waste from dairy production is one of the largest sources contamination antimicrobial resistant bacteria (ARB) and genes (ARGs) in many parts world. However, studies to date do not provide necessary evidence inform resistance (AMR) countermeasures. We undertook a detailed, interdisciplinary, longitudinal analysis slurry waste. The contained population ARB ARGs, with resistances current, historical never-used on-farm antibiotics; were associated Gram-negative Gram-positive mobile elements...
SUMMARY Seven research and teaching centres have co-operated in an experiment involving 154 sows. The compared the effect of feeding four different patterns feed intake during pregnancy upon reproductive performance In each case approximately 220 kg were given gestation according to designated Constant (C), Low-High (L-H), High-Low (H-L) High-Low-High (H-L-H). During lactation all animals a daily ration 3·7 for litters five pigs or less, 0·4 additional piglet. Wherever possible sows remained...
ABSTRACT Piglets in litters reared groups from 3 to 7 weeks of age weighed less at weaning (7 weeks) than piglets which were penned individually. Some the difference between two management systems was created within week after grouping. Grouping sows and their did not initiate oestrus lactation. The subsequent litter size grouped reduced but between-treatment differences for this trait failed reach significance 5% level.
Four trials were carried out to determine the effect of feeding a supplement stirks 6–9 months age when turned grass. In two there was no response and in supplementary feeding. No obtained five supplements fed store fattening cattle. The undecorticated cotton cake did not have any apparent either on rate live-weight gain or scouring. It is concluded that while young animals can bejustified maximum required, older cattle cannot be recommended so long as are grazing good swards.
1. Two digestibility trials were carried out to determine the s.e. and t.d.n. of swedes, fodder beet grass silage when fed alone each kind root was with at separate feeds. In addition, together same feed. 2. The results examined if feeding roots in diet, but feeds, had led any complementary effect. 3. No effect found swedes 4. A negative 5. values plus feed significantly higher than two foods given times. 6. swede dry matter standard figures published. An explanation is given. 7. nutritive...
1. The method adopted for making three different grades of silage, from grass cut at stages maturity, is described. 2. A feeding trial described including four groups cattle fed on I–III silages and swedes straw respectively. 3. live-weight gains made are recorded together with the rate dry-matter intake. 4. digestibility was carried out silage. coefficients found recorded. 5. It shown that solely silage build up a bigger ‘gut fill’, to extent 40 lb. (± 11), than similar straw. 6. When an...
SUMMARY 1. Three pure breeds, Aberdeen-Angus (AA), Ayrshire (AYR) and British Friesian (FR), three crossbreds, × (AA AYR), FR) (FR AYR) were studied. Each breed type was represented by 12 male castrates which the progeny of at least seven sires in each case. 2. The purebred cattle dairy faster growing ( P < 0·001), heavier slaughter 0·001) produced carcasses than beef breed. There no significant differences between breeds lean contents their there indication any systematic effect on...
SUMMARY The growth and carcass characteristics of autumn-born Hereford × Ayrshire castrated male calves reared on two planes nutrition have been studied. Restricted feeding for 12 weeks after weaning from liquid feed to the time were turned out grass created a difference 52·0 lb per head in live-weight gain 15·2 this persisted at slaughter. There small differences conformation composition.
SUMMARY Two milk replacers identical in composition except for the protein source, which was either fish-protein hydrolysate (FPH) or dried skim milk, were offered twice four times daily to castrated British Friesian male calves ratios: 100 FPH 0 Milk; 67 33 Milk and Milk. Concentrates hay ad libitum , weaned at 42 days of age. Feed intake calf live weight recorded There no differences growth rate up weaning due frequency feeding. Up 67% there but on 100% diet showed a 40% depression...
The growth and carcass characteristics of semi-intensively reared Charolais × Ayrshire Beef Shorthorn cattle were studied. Ayrshires grew faster while grazing, achieved slaughter condition at a higher live-weight age had leaner carcasses than Ayrshires. practical significance these results is discussed.
There were no differences in toughness, juiciness, intensity of flavour and incidence taints between samples meat from wether lambs cattle which had been treated with oestrogens similar untreated controls. During feeding trials prior to slaughter both the sheep given gained live-weight significantly faster than their respective
Twenty-four Hereford × Angus Shorthorn steers, which were 18 months old, divided at random into four groups of six. There treatments, two involving the feeding supplementary protein and implantation steers with hexoestrol, thus: (1) basic ration, no hexoestrol; (2) protein, (3) hexoestrol implant; (4) implant. While produced a significantly higher growth rate, addition above level in had effect.
SUMMARY A variety of energy and protein supplements for winter diets based on barley straw were tested in experiments carried out over three years with spring-calving suckler cows. All the resulted satisfactory calf weaning weights cow performance but there indications that a low level (2·3 kg) plus 68 g urea adversely affected birth calves their from to turnout.
A number of feeding trials, designed to determine the fattening value grass silage for beef cattle, have been carried out during last four years in Aberdeenshire. general account these trials has published, (3, 4) and a detailed some results Trial No. 9 is press (5). The chemical analysis required was performed by Dr. A. J. G. Bamett, Department Biological Chemistry, Univeristy Aberdeen. Some aspects analytical already published (1, 2). During two on Duthie Craibstone Farm, data eollected...
SUMMARY Twelve British Friesian and 12 Ayrshire castrated male calves were fed ad libitum one of three complete diets differing energy concentration from approximately 140 to 410 kg live weight. Differences in the achieved by inclusion different proportions wet distiller's grains (WDG). Increasing proportion WDG diet caused reductions performance. This effect was more marked with Friesians than Ayrshires. The treatments had small generally non-significant effects on carcass conformation composition.
The results are given from trials which were designed to demonstrate the effects of feeding antibiotics and a tranquiliser beef cattle. In Trial 1 80 mg. aureomycin daily produced no significant effect. 2 neither 2·5 hydroxyzine nor terramycin two combined any effect except depress level intake dry-matter over whole trial period. This reduction in drymatter did not lead an increase efficiency conversion (lb. per lb. live-weight gain). tetrahydrozoline was unsuccessfully used at beginning...
Results are given from two digestibility trials in which the following three diets were fed to sheep: (i) grass only, (ii) grass+5 oz. cotton cake daily, (iii) grass+10 daily. In first trial average dry-matter content of was low (approx. 14%), intake and supplements eaten addition grass. second where 20%) higher, reduced herbage consumption. The feeding did not have any significant effect on percentage faeces but depressed dry matter, crude protein, fibre nitrogen-free extract including...