scholarly journals Effects of underfeeding Awassi ewes in late pregnancy and early lactation on body weight changes and milk production

1995 ◽  
Vol 44 (Suppl. 1) ◽  
pp. 319-319
Author(s):  
A. El Awad ◽  
AV Goodchild ◽  
O. Gürsoy
Keyword(s):  
Body Weight ◽  
Milk Production ◽  
Late Pregnancy ◽  
Early Lactation ◽  
Weight Changes ◽  
Body Weight Changes

The effect of body-weight changes during pregnancy and lactation on the performance of three breeds of sheep

1980 ◽  
Vol 95 (2) ◽  
pp. 357-363 ◽  
Author(s):  
A. P. Mavrogenis ◽  
J. Hancock ◽  
A. Louca
Keyword(s):  
Body Weight ◽  
Milk Production ◽  
Live Weight ◽  
Weight Changes ◽  
Body Weight Changes ◽  
Medium Level ◽  
Pregnancy And Lactation ◽  
Low Levels ◽  
High Yields ◽  
High Level

SUMMARYThree husbandry systems were used to promote differential live-weight gains in 603 Cyprus Fat-tailed, Chios and Awassi ewes. Ewes on the high level of feeding had heavier litters than those on the medium and low levels. Litter size was not affected by level of feeding during pregnancy. Milk production was highest (P < 0·01) for ewes on the high level. The milk production of Chios and Awassi ewes was similar on the high and low feeding levels, but Awassi ewes outyielded both other breeds on the medium level. Chios ewes had larger and heavier litters (P < 0·01) than both other breeds. The correlations between live weights during lactation and milk yield were low and negative indicating a tendency for body loss at high yields.

Intensive rotational grazing for dairy cattle feeding

1995 ◽  
Vol 10 (4) ◽  
pp. 147-151 ◽  
Author(s):  
J.W. Rust ◽  
C.C. Sheaffer ◽  
V.R. Eidman ◽  
R.D. Moon ◽  
R.D. Mathison
Keyword(s):  
Body Weight ◽  
Dairy Cattle ◽  
Milk Production ◽  
Dairy Cow ◽  
Perennial Grass ◽  
Early Spring ◽  
Weight Changes ◽  
Rotational Grazing ◽  
Body Weight Changes ◽  
Cattle Feeding

AbstractA 2-year study compared milk production and profitability for confinement feeding versus rotational grazing. Guernsey and Guernsey x Holstein cows grazed perennial grass pastures from mid-May to October or were fed in confinement. Averaged over both years, confined cows produced 7% more milk; their milk was similar in fat concentration to that of grazing cows. Body weight changes and health of the two groups were similar. Net return per cow averaged $64 higher for rotational grazing than for confinement because of lower costs for feeding, facilities, equipment, and labor. Intensive rotational grazing of pastures is a competitive alternative for dairy cow feeding. However, farmers in the northern U.S. will still require stored feeds from late fall through early spring.

Energy consumption and subsequent partitioning in lactating black-tailed deer

1982 ◽  
Vol 60 (3) ◽  
pp. 382-386 ◽  
Author(s):  
R. M. F. S. Sadleir
Keyword(s):  
Body Weight ◽  
Dry Matter ◽  
Odocoileus Hemionus ◽  
Early Lactation ◽  
Weight Changes ◽  
Odocoileus Hemionus Columbianus ◽  
Body Weight Changes ◽  
Voluntary Feed Intake ◽  
Consumption Rates ◽  
Caloric Balance

The voluntary feed intake of lactating Odocoileus hemionus columbianus does was measured to 4 months after parturition. Similar measures of consumption by nonlactating does showed average dry matter intakes of 67 g∙kg−0.75∙day−1 (247 kcal digestible energy∙kg−0.75∙day−1; 1 cal = 4.1868 J). At peak consumption rates, 4–5 weeks after parturition, lactating does with twin fawns consumed 170% of the intake of nonlactating does. For does with single fawns the rate was 135%. Body weight changes in early lactation varied between does, with some individuals utilizing body reserves to maintain milk production whereas others remained in a positive caloric balance. For the rest of lactation, voluntary feed intakes were sufficiently high to allow all does to both produce milk and increase in body weight.

Pre-lambing supplementation of gadic ewes in western Afghanistan

1980 ◽  
Vol 95 (1) ◽  
pp. 39-45
Author(s):  
I. D. McArthur
Keyword(s):  
Body Weight ◽  
Economic Benefits ◽  
Basic Information ◽  
Selective Feeding ◽  
Weight Changes ◽  
Body Weight Changes ◽  
Weight Losses ◽  
Sheep Production

SummaryA survey of sheep production was undertaken in rangeland areas of western Afghanistan to provide basic information of ewe body-weight changes throughout the year and on production variables, including mortality and lambing performance. Ewes lost up to 31% of body weight between December and March and mortality over the same period was 7%. On the basis of the results of this survey, an experiment was made to test the effect on lambing performance of pre-lambing supplementation of range-based ewes.Supplementation reduced weight losses in ewes, but the feeding treatments did not produce significant results in terms of lamb birth weights or survival to 10 days. However, there were indications that selective feeding of weak ewes can produce economic benefits, given that the costs of supervising such animals are minimal and the price of grain supplements is low relative to the price of meat.

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