Fit of Wood's function to weekly records of milk yield, total digestible nutrient intake and body weight changes in early lactation of multiparous Holstein cows in Japan

2006 ◽  
Vol 104 (1-2) ◽  
pp. 156-164 ◽  
Author(s):  
Y. Choumei ◽  
A.K. Kahi ◽  
H. Hirooka
2021 ◽  
Vol 50 (1) ◽  
pp. 50-56
Author(s):  
MA Siddiki ◽  
MR Amin ◽  
AKMA Kabir ◽  
MO Faruque ◽  
ZH Khandaker

This study was designed to investigate the effects of supplementation of high and low energy based concentrate diets (13.77 Vs 12.14 MJ/kg DM metabolizable energy) on the nutrient intake and body weight changes of indigenous growing buffalo bull calves in Bangladesh. The crude protein contents of both the supplemented diets were similar (about 12.50% on DM basis). In this study, a total of fifteen indigenous growing buffalo bull calves (av. Live weight 85.10±0.874 kg) were selected from different villages. It was found that the total dry matter intake was the highest (28.22±0.015 g/kg W0.75/d) in group supplemented with high energy concentrate diet along with farmer’s practices (D1), thereafter, in group supplemented with low energy concentrate diet along with farmer’s practices (D2) (27.79±0.015 g/kg W0.75/d) and the lowest (26.39±0.016 g/kg W0.75/d) in control group (D0) in which the animals were fed only farmers practices diet. Similarly, the crude protein intake was the highest in D1 group (2.86 ±0.029 g/kg W0.75/d), followed by D2 group (2.83±0.010 g/kg W0.75/d) and the lowest in farmer’s practices diet, D0 (2.08b±0.021 g/kg W0.75/d).  However, the final body weight of buffalo bull calves was higher in both groups supplemented with concentrate diets (D1 and D2) compared with control (D0) and differed significantly (p<0.01) while there were no significant differences (p>0.05) found between D1 and D2 where high energy concentrate supplementation group buffalo bull claves, D1 tended to be higher than low energy concentrate supplementation group buffalo bull claves, D2. The highest final (254.6 kg) body weight was recorded in high energy concentrate supplemented diets and the lowest (144.0 kg) was found in control. Additionally, the average final body weight was increased by 153.40 kg (151.58%), 150.40 kg (152.22%) and 45.60 kg (46.34%) in D1, D2 and D0 group buffalo bull calves, respectively. On the other hand, the average final body weight of D1 and D2 was increased by 110.60 kg (76.80%) and 105.20 kg (73.05%), respectively, compared with D0. In addition, the highest (6.46) feed conversion efficiency (FCE) was recorded in D1 followed by D2 (6.64) and the lowest (12.17) was found in D0. The trends of cost benefit ratio was the same like other considering factors, the highest (1:3.60) found in D1 followed by D2 (1:3.51) and the lowest (1:1.97) in D0. Finally, considering all the parameters, it was clearly indicated that supplementation of concentrate diet along with farmers practice is essential for fast growing, higher body weight gain and more benefits by rearing buffalo bull calves at Subornochar Upozila of Noakhali district in Bangladesh. Bang. J. Anim. Sci. 2021. 50 (1):50-56


1969 ◽  
Vol 72 (1) ◽  
pp. 103-107 ◽  
Author(s):  
J. J. Robinson ◽  
W. H. Foster ◽  
T. J. Forbes

SUMMARYMilk yield data obtained by the lamb-suckling technique on twenty-four ewes over a period of 5 consecutive days in the second and third week of their lactation have been related to lamb body weights and lamb body-weight changes over the same period. The regression equation obtained wasThe equation was used to estimate the milk consumption of lambs over the range of lamb body weights and lamb body-weight changes studied. The standard errors of these estimates have been computed for comparison with those obtained directly from the lamb suckling technique.The role of the prediction equation in estimating daily milk consumption of lambs is discussed.


1982 ◽  
Vol 60 (3) ◽  
pp. 382-386 ◽  
Author(s):  
R. M. F. S. Sadleir

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.


1980 ◽  
Vol 95 (1) ◽  
pp. 39-45
Author(s):  
I. D. McArthur

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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