Results 251 to 260 of about 66,848 (293)
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The energy requirements of sheep for maintenance and gain. II. Grazing sheep
The Journal of Agricultural Science, 1962The intake of grazing sheep in terms of digestible organic matter, DOM, has been measured by faecal index methods, employing chromic oxide to measure faecal output and faecal nitrogen for digestibility of pasture. A regression equation for the prediction of digestibility from faecal nitrogen (organic matter basis) was developed from several series of ...
I. E. Coop, M. K. Hill
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Effect of shearing on feed requirements of sheep
New Zealand Journal of Crop and Horticultural Science, 1974Abstract A series of experiments was conducted in which the increased feed (energy) requirement due to shearing was estimated from the live‐weight loss of shorn sheep relative to unshorn sheep. The estimate represented the mean increase during the month after shearing. Subjective observation suggests the increase would be considerably
D. G. Elvidge, I. E. Coop
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The phosphorus requirements for growth and maintenance of sheep
The Journal of Agricultural Science, 1982SUMMARYPhosphorus requirements for maintenance and growth were assessed by giving to growing lambs and non-pregnant ewes diets low in P and to growing lambs a diet containing the quantity of P recommended by the Agricultural Research Council (1980).Seven 14-week-old lambs were given ad libitum a pelleted diet containing 1·88 (LP) or 2·75 (NP) g P/kg D.
A. C. Field +3 more
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Estimates of the energy required for maintenance by adult sheep 2. Grazing sheep
Animal Science, 1963SUMMARYThe mean daily digestible organic matter intake (D) of each of 47 adult sheep during a grazing period of mean length 48 days was estimated by the chromium sesquioxide/faecal nitrogen technique. Mean live-weights (W) and mean daily weight gains (G) were also measured.The regression of D on W and G, and the underlying or functional relationship ...
J. P. Langlands +3 more
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Effects of a change in phosphorus requirement on phosphorus kinetics in the sheep
Research in Veterinary Science, 1994An experiment was carried out to examine the effects of a change in P requirement, achieved by intravenous calcium loading, on intestinal phosphorus absorption, salivary phosphorus secretion and faecal endogenous phosphorus loss in adult sheep fitted with a rumen and duodenal cannula.
A A, Rajaratne, D, Scott, W, Buchan
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The Effect of Natural Outdoor Environments on the Energy Requirements of Sheep
Research in Veterinary Science, 1966SUMMARY The effect of the infra-red radiation environment on the heat loss of sheep was determined by exposing 2 sheep in 2 respiration chambers in which the air velocities and distributions were the same, but which had different wall emissivities in the infra-red. It was found that the radiative conductance was 109 kcal/m2.24 hr. °C.
J P, Joyce, K L, Blaxter, C, Park
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Estimates of the energy required for maintenance by adult sheep 1. Housed sheep
Animal Science, 1963SUMMARYEight adult ewes were fasted for 114 hr. During the last 48 hr. the heat emission of each sheep was measured by direct calorimetry and was found to be 35·2 kcal./kg.0·87/24 hr., that is, 973 kcal./24 hr. for a sheep of 45·4 kg. (100 lb.) live-weight. From this value it is estimated that the 100 lb. sheep would require daily 0·79 lb.
J. P. Langlands +3 more
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Water requirements of African goats and haired-sheep
The Journal of Agricultural Science, 1971SummaryA number of species of desert-dwelling ungulates (e.g. Grant's gazelle and oryx) can apparently survive desert conditions without drinking. We were interested in finding out whether goats and sheep herded in the arid Northern Frontier Region of Kenya utilized the same physiological strategies for reducing water requirements as the wild ungulates.
G. M. O. Maloiy, C. R. Taylor
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Amino Acid Requirements and Biological Value of Proteins for Sheep
The Journal of Nutrition, 1987An intragastric infusion model was used to determine the biological value of three protein sources for sheep. Biological value was calculated from the regression of urinary nitrogen on nitrogen intake. A casein-amino acid mixture corresponding to previously determined metabolic amino acid requirements as well as casein alone and gelatin was studied ...
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The energy requirements of sheep for maintenance and gain. I. Pen fed sheep
The Journal of Agricultural Science, 1962Four experiments have been conducted with sheep, housed and fed in pens, to determine the maintenance and live-weight gain requirements of sheep under such conditions.1. Fifteen Corriedale sheep of initial live weight 115 lb. were fed at maintenance for 13 weeks.
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