Search Results
Results 401 - 450 of 491
< 1 2 3 4 5 6 7 8 9 10 >
Silanikove N - - 1987
Sheep fully exposed to Mediterranean summer conditions had a higher respiration rate and a higher body temperature than sheep with access to shade. Nevertheless, feed intake and water intake of non-sheltered animals was not different from that of sheltered ones and both maintained their body weight on medium quality hay. ...
Soll M D - - 1987
Seven trials including 768 cattle were conducted in South Africa and Namibia to evaluate the efficacy of the systemic parasiticide ivermectin when administered subcutaneously at a dose rate of 200 micrograms/kg against sarcoptic (Sarcoptes scabiei var. bovis), chorioptic (Chorioptes bovis) and psoroptic (Psoroptes ovis var. bovis) mange mites. The efficacy ...
Heath A C - - 1987
A single, artificially-induced fly-strike with Lucilia sericata larvae was associated with a rapid (decline in food intake in sheep, with a consequent reduction in liveweight. Loss of weight ranged from 0.5 to 5.5 kg over four to six days and recovery to pre-infestation liveweight took three to 36 days. Pair-fed, ...
Baile C A - - 1987
Opioid peptides, particularly beta-endorphin, methionine- (MEK) and leucine-enkephalin, and dynorphin, are involved in the regulation of food intake in mammals. The precursor molecules of these peptides undergo differential processing in brain areas producing regional concentration differences in opioids. Intraregional concentration changes also accompany alterations in feeding states. For example, MEK ...
Bekesi J G - - 1987
In 1973, inadvertent contamination occurred in a special farm feed supplement for lactating cows. Polybrominated biphenyls (PBBs) were used in place of magnesium oxide resulting in serious harm to farm animals, including cattle, chickens, geese, ducks. Farm families, accustomed to eating their own products, were most heavily exposed. To study ...
Kendrick K M - - 1986
The technique of intracranial dialysis was used to sample changes in monoamine metabolite and uric acid concentrations in the zona incerta (ZI) of the subthalamic region of conscious sheep during rumination and in response to the presentation of feeding and drinking stimuli. Sequential 10-min dialysis samples were taken over a ...
Dehority B A - - 1986
Parentodinium africanum was observed in rumen contents of four Brazilian cattle and constituted 4.4, 0.9, less than 0.1, and 10.0% of the total ciliates. This appears to be the first observation of the family Cycloposthiidae in the rumen habitat. Blepharoconus krugerensis, previously observed in the intestines of the elephant, and ...
Varghese T - - 1986
Faecal samples from 232 domestic pigs raised on concrete, 98 free-ranging village pigs, and five wild boar showed 46.6 (108/232), 54 (53/98) and 80% (4/5) prevalence of coccidian oocysts, respectively. Eight species of Eimeria, and Isospora suis, were recovered. In their descending order of predominance in the pigs raised on ...
Tarry D W - - 1986
Warble flies (Fig. 1) are bee-like insects, belonging to the parasitic fly family Oestridae, which spend their entire 10-month larval period inside the body of the host animal, only emerging in the summer to complete their development to the free-flying adult stage (Fig. 2). In 1978, when almost 40% of ...
Rocha A - - 1986
Physical examinations were performed on 3991 bulls reared in subtropical (75%) and tropical (25%) Mozambique. A culling rate of 16.3% (651 sires) was found. The range of culling rate between farms varied from 3 to 44%. The main culling reasons were a) epididymitis, b) atrophy and/or hypoplasia, and c) testicular ...
Hulet C V - - 1986
Effects of season, nutritional environment, and presence of rams on incidence and rate of ovulation in fine-wool sheep in southern New Mexico were investigated over 14 months (February 1983-March 1984). Number of corpora lutea (CL) were observed each month by laparoscopy in random samples from six ewes in each subgroup. ...
Brown E A - - 1986
Since the early 1970s, the Food Safety and Inspection Service of the US Department of Agriculture has monitored fat samples from meat and poultry for residues of hexachlorobenzene (HCB). The violative level for enforcement activities is 0.5 ppm. Data on HCB residues found in meat and poultry have been organized ...
Okolo M I - - 1985
A total of 221 blood and 174 carcase swab samples obtained from food animals (cattle, sheep, goats, pigs and horses) slaughtered at urban and rural slaughter houses in Nsukka area were studied. 51 blood samples and 180 samples of vesicle fluid were also collected from persons occupationally exposed (butchers/skinners, meat ...
Flachowsky G - - 1985
First of all spineless Opuntia is an important source of water for livestock in tropical regions. The water content of one-year sprouts amounted to 92.5%. 70 to 75% of dry matter of Opuntia ficus indica were crude carbohydrates, approximately 20% were crude ash. The apparent digestibility of organic matter was ...
Macrae J C - - 1985
Three experiments were conducted with sheep given spring-harvested dried grass (SHG) and autumn-harvested dried grass (AHG). The first was a calorimetric trial to determine the metabolizable energy (ME) content of each grass and the efficiency with which sheep utilize their extra ME intakes above the maintenance level of intake. The ...
Fadlalla A M - - 1985
The effects of passive immunization against somatostatin on retention time of marker have been investigated in sheep using Cr2O3 as a marker. The mean transit time for clearance of 50% of the marker was significantly retarded in all the anti-somatostatin-treated animals by approximately 19.0 h, as compared with control lambs ...
Hart I C - - 1985
Three experiments were conducted to compare the ability of different preparations of growth hormone-releasing factor (GRF) to stimulate GH secretion in sheep maintained in positive and negative energy balance. In experiment 1 five sheep were injected (i.v.) with three preparations of human pancreatic GRF (hpGRF-44, hpGRF-40, hpGRF-29-NH2) and one preparation ...
Dadswell L P - - 1985
A postal survey of cattle producers in the Maranoa, Warrego and Leichhardt districts of Queensland where poisoning of cattle by larvae of the sawfly (Lophyrotoma interrupta) occurs was carried out in 1982 with 179 replies (64% of those contacted). During 1972-81, 50 farms with 84,300 cattle experienced deaths (5254 on ...
Gregory P C - - 1985
The relation between the level of food intake and gastrointestinal motility and digesta flow in the abomasum and small intestine was studied in sheep fitted with nichrome-wire electrodes in the gut wall, an abomasal and a duodenal catheter and a terminal ileal cannula. Abomasal volume and outflow were calculated from ...
Hambolu J O - - 1985
Seventy-five pairs of ovaries from Yankasa Sheep aged 1 1 2 to 3 years were collected from a Zaria abattoir for 12 months, to study the ovarian activity. It was observed that ovarian activity in Yankasa sheep was year-round with maximum activity occurring during the rainy and pre-rain seasons. These ...
Loomis E C - - 1985
Culicoides gnats were monitored from April through November, 1981, on the Tejon Ranch, Kern County. Levels of gnat breeding were determined by quantitative sampling of substrate from intermittent and permanent water sources. Adult populations were measured by light trap collections taken around pens holding sentinel beef cattle, dairy calves, sheep, ...
Osiyemi T I - - 1985
Toxoplasma gondii antibodies were found in the sera of 22.86% of people in the Jos area of Plateau State, Nigeria. The incidence of antibodies in Nigerian food animals was 17.40%, the highest being in sheep (21.92%) and lowest in goats (13.88%). Cattle and horses were roughly equally infected--about 17.0%. The ...
Silanikove N - - 1985
Food consumption decreases with the lengthening of the period of dehydration in both breeds in a similar manner. However, in comparison, the Saanen goats reduced their dry matter intake and consequently their water intake much more than the Bedouin goats. Apparent digestibility of dry matter increased significantly in both breeds ...
Bell F R - - 1984
Ingestive behavior in cattle differs from other species because of physiological mechanisms developed pari passu with fermentative digestion. The secondary refection of rumination allows remastication and reinsalivation of the large bulk of vegetable food ingested. The need to buffer acid products of cellulose digestion demands continuous high secretion of alkaline ...
Gates D B - - 1984
In eastern Tanzania an electric grid trap carried in the back of a moving pick-up truck was used to capture engorged Glossina morsitans morsitans and G. pallidipes for an analysis of their food sources. Although 12 000 head of domestic cattle represented c. 75% of the animal biomass in the ...
Heinz Gary H - - 1984
Organochlorine residues were measured in the carcasses and, in some cases, brains and stomach contents of four species of birds collected along the Sheboygan River, Wisconsin during the years 1976 to 1980. Polychlorinated biphenyls (PCBs) were high in all samples and were the contaminants of greatest concern. Carcass residues ranged ...
McDougall K W - - 1984
The settling rates of 0.025% w/v amitraz (used as a 50% w/w active ingredient wettable powder) and lime stabiliser (0.7% Ca(OH)2) were studied in cattle dipping baths in the Tick Quarantine Area of northern New South Wales. Although lime settled more rapidly than amitraz, the rate for both decreased as ...
Rybosová E - - 1984
In experiments on six sheep fed on a low protein diet (6.2 g N/day), it was found that the urease activity of the rumen fluid did not change significantly in the first 6 hours after feeding and that it ranged from 45 to 75 nkat.ml-1. The major portion was bound ...
Maddison S - - 1983
Single unit recordings were made in the lateral hypothalamic region and ventrobasal thalamus in conscious sheep during presentation of food and feeding. Unit responses to all aspects of testing were observed between the two areas. However, analysis of the data revealed a functional division of unit types between the two ...
Henderson D - - 1983
The sheep body louse Damalinia ovis is a potentially serious problem affecting the value of the fleece and possibly causing reduced weight gains. Control has been based on the dipping or showering of sheep using insecticidal oil in water emulsions. The results using a pour-on formulation of the synthetic pyrethroid ...
Naculér A - - 1983
In institutes where sheep are used for laboratory purposes, the common use of commercial pellet food increases the risk of copper intoxication, as the mineral supplement in sheep pellets is equal to that used for cattle, and consequently too high. Therefore we strongly urge that this kind of food should ...
Majak W - - 1983
Rumen contents from the dorsal sac were examined before alfalfa ingestion to determine factors that predispose cattle to pasture bloat. Chlorophyll concentration, buoyancy of particulate matter, and rates of gas production were significantly higher in cattle that subsequently bloated than in those that did not. Higher chlorophyll in bloat cases ...
Borgsteede F H - - 1983
The efficacy of the morantel sustained release bolus system for the control of parasitic gastroenteritis in calves was evaluated in the Netherlands. The effect of bolus administration to calves, either on May 1 at the beginning of the summer grazing season or on June 12 after the pasture was mown ...
Kocan K M - - 1983
Hemolymph was collected from adult Dermacentor andersoni Stiles that had been infected with Anaplasma marginale Theiler as nymphs. Before hemolymph was collected, the adult ticks were either incubated and unfed at 37 C for 2.5 days or fed for 6 days on sheep. Hemolymph collected from groups of 100 ticks ...
Ahmed F A - - 1983
Two experiments were carried out with Sudan zebu cattle and desert sheep to study the voluntary intake and digestibility of berseem (Medicago sativa) and Abu 70 (Sorghum vulgare) forages when offered ad lib. alone and with supplements of molasses to the cattle and dura grain to the sheep. In both ...
Vandermeerschen-Doizé F - - 1983
The long-term changes in plasma lipid composition and blood glucose, beta-hydroxybutyrate and insulin concentrations in experimental ad libitum fed adult Suffolk sheep were studied and compared with those of control sheep receiving a maintenance diet. The results were interpreted in relation to changes in food intake, body weight and body ...
Fonty G - - 1983
We studied in meroxenic lambs, i.e. in lambs with a simplified digestive microflora, the effect of the microflora on the quantities of solid feed intake and on the main digestive parameters in the rumen. Axenic lambs were inoculated with a more or less complex flora, obtained by diluting (10(-8), 10(-7), ...
Specht E J - - 1982
The seasonal fluctuations in faecal worm egg counts were studied at monthly intervals for over a year in 20 male sheep and goats on extensive grazing tracts at a farm near Maputo, Mozambique. Larval differentiation from faecal cultures showed that Haemonchus contortus and Oesophagostomum columbianum were the most prevalent worm ...
Brooks H V - - 1982
A bilateral cataract was noted to occur in sheep on a New Zealand Romney stud. Extensive breeding trials showed that this defect was inherited as an autosomal dominant. As such this form of cataract is of minimal importance to the sheep industry as control is merely by culling affected individuals.
Oliver L L - - 1982
Concentrations of 129I and values of the 129I/127I ration are reported in one sample of indigenous vegetation and in over forty additional individual thyroids of man, wild deer and beef cattle in Missouri. The results of this and other studies in our laboratory indicate the following order for successively lower ...
Latimer F G - - 1982
Heritability estimates for scrotal circumference and testicular tone at weaning (225 d) and yearling (365 d) were determined from records on 565 bulls from a purebred Angus herd; year, station and breed effects were determined from scrotal circumference records on 2,420 bulls at five tests stations. Year, breed and breed ...
Baldwin B A - - 1982
Self-stimulation was obtained in 5 adult male sheep using a movable electrode system. The effects on response rate of increases in current, food deprivation and satiation were determined. Interactions between feeding, drinking and self-stimulation over longer periods (5 days) were studied in experiments in which individual sheep lived in an ...
Stumm C K - - 1982
1. The frequency of association between methanogenic bacteria and ovine rumen ciliates was studied in the rumen fluid of a fistulated sheep. 2. A period of fasting and flushing of the rumen content with nitrogen resulted in a relatively high association, whereas the intake of food and flushing with hydrogen ...
Horak I G - - 1981
The seasonal incidence of helminth infestation in sheep, cattle, impala and blesbok was determined from fluctuations in the worm burdens of these animals exposed to natural infestation at particular localities in the Transvaal and slaughtered at various fairly regular intervals. The nematodes considered to be of major importance were Haemonchus ...
Scoggins B A - - 1981
1. To test the hypothesis that [Asp1,Val5]-angiotensin-(1-8)octapeptide ([Asp1,Val5]ANG II) is a more potent agonist to aldosterone secretion in the sodium-depleted animal than is [Asn1,Val5]angiotensin-(1-8)octapeptide ([Asn1,Val5]ANG II), local adrenal arterial infusion of the two peptides has been carried out in sheep with cervical adrenal autotransplants. 2. Neither [Asp1,Val5]ANG II nor [Asn1,Val5]-ANG ...
Dicker R W - - 1981
Brahman x Hereford cattle carried only one-quarter as many engorging adult bush ticks (Haemaphysalis (Kaiseriana) longicornis) as Hereford. Simmental x Hereford or Friesian x Hereford cattle when grazed together on the north coast of New South Wales. Fourteen percent of a Brahman x Hereford herd carried half of the engorging ...
Tarry D W - - 1981
A nationwide survey was conducted of the relative distribution and life cycles of the two cattle warble fly species Hypoderma bovis and H lineatum to complement information derived from examining livestock at markets and hide damage at slaughter. Warble fly larvae were collected from cattle at abattoirs in 59 counties ...
Reuber M D - - 1981
Dichlorvos, 2,2-dichlorovinyl dimethyl phosphate, an organophosphate insecticide, is widely used for the control of agricultural, industrial, and domestic pests (Fig. 1) [1]. Dichlorvos is administered orally as an anthelmintic to swine, horses, cats, and dogs. It is applied by dermal application to cattle, goats, sheep, swine, and chickens to control ...
Wegrzyn T - - 1981
The experiments were carried out on 5 sheep with chronic fistulae of the rumen and of the fundus and pyloric part of the abomasum. The motor activity of the parts of the stomach containing fistulae was recorded by the balloon method. The analysis of the obtained contraction curves showed that ...
Dada B J - - 1980
A retrospective analysis of slaughterhouse records during the pre-veterinary-organized meat inspection era (before 1970) for cysticercosis and hydatidosis in food animals showed that parasitic cysts were documented but not identified and that the numbers of slaughtered animal species harbouring various parasitic cysts were not recorded. Since the various parasites which ...
< 1 2 3 4 5 6 7 8 9 10 >