Effect of feeding level on milk production, body weight change, feed conversion and postpartum oestrus of crossbred lactating cows in tropical conditions

2002 ◽  
Vol 77 (2-3) ◽  
pp. 331-338 ◽  
Author(s):  
M.V Sanh ◽  
H Wiktorsson ◽  
L.V Ly
Keyword(s):  
Body Weight ◽  
Milk Production ◽  
Weight Change ◽  
Body Weight Change ◽  
Feed Conversion ◽  
Feeding Level ◽  
Lactating Cows ◽  
Tropical Conditions ◽  
Production Body ◽  
Effect Of Feeding

Impact of feeding balanced rations on milk production, methane emission, metabolites and feed conversion efficiency in lactating cows

2016 ◽  
Author(s):  
P. L. Sherasia ◽  
B. T. Phondba ◽  
S. A. Hossain ◽  
B. P. Patel ◽  
M. R. Garg
Keyword(s):  
Milk Production ◽  
Conversion Efficiency ◽  
Methane Emission ◽  
Feed Conversion ◽  
Feed Conversion Efficiency ◽  
Lactating Cows ◽  
Microbial Nitrogen ◽  
Enteric Methane ◽  
Effect Of Feeding ◽  
Phosphorus Intake

A field study on early lactating crossbred cows (n=35) was conducted to evaluate the effect of feeding balanced rations on milk production, enteric methane emission, metabolites and feed conversion efficiency (FCE). In comparison to requirements, the dietary intake of protein and energy were higher by 25.0 and 12.7% whereas, calcium and phosphorus intake were lower by 30.0 and 27.0%, respectively. Balanced feeding improved daily 4% FCM yield by 0.7 kg/cow (P<0.05) and intestinal flow of microbial nitrogen (N) by 37.0% (P<0.01), whereas, reduced (P<0.01) feeding cost by 17.0% and enteric methane emission (g/d/cow and g/kg milk yield) by 14.6 and 18.1%, respectively. Level of IgG, IgA, IgM and uric acid content increased significantly, whereas BUN level reduced (P<0.01) from 18.2 to 15.0 mg/dl. FCE improved (P<0.01) from 0.8 to 1.0 and efficiency of microbial protein synthesis also improved (P<0.01) by 63.6% owing to feeding of balanced rations indicating better performance of cows. Present study indicates that feeding nutritionally balanced rations improved milk production, feed conversion efficiency and reduced methane emission in lactating cows under field conditions.

The effect of dietary crude protein concentration and time of weaning on milk production and body-weight change in the ewe

1974 ◽  
Vol 19 (3) ◽  
pp. 331-339 ◽  
Author(s):  
J. J. Robinson ◽  
C. Fraser ◽  
J. C. Gill ◽  
I. McHattie
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Milk Production ◽  
Weight Change ◽  
Crude Protein ◽  
Body Weight Loss ◽  
Metabolizable Energy ◽  
Body Weight Change ◽  
The Mean ◽  
Incremental Increase

SUMMARYTwenty-seven North Country Cheviot ewes, each carrying twin foetuses and having a mean body weight at 6 weeks prior to parturition of 81 kg were individually penned and offered a constant daily intake of 16·75 MJ metabolizable energy during the last 6 weeks of gestation. At parturition the ewes were allocated to one of three dried grass/concentrate diets containing (1) 10·3, (2) 13·6 or (3) 16·9 % crude protein (CP) and 10 MJ metabolizable energy (ME) per kg. The mean daily CP intakes for diets 1 to 3 were 273, 340 and 415 g respectively and the mean daily ME intake was 25 MJ. Within each level of dietary CP intake the lambs were weaned at either 25, 35 or 41 days of age.There were no significant diet × stage of weaning interactions in milk yield or ewe body-weight change during lactation. The mean daily levels of milk production were 2·4, 2·9 and 3·1 kg for diets 1 to 3 respectively. The corresponding values for ewe body-weight loss were 118, 170 and 265 g per day. When the diet contained 13·8% CP the incremental increase in milk production per unit increase in protein intake was 4·2 g/g. This gave an incremental increase in lamb growth rate of 0·79 g/g and was equivalent to the associated incremental increase in ewe body-weight loss.A reduction in the concentration of CP in the ewes' diet when the lambs are 3 weeks of age may be a useful practical procedure for decreasing milk production and for reducing the body-weight loss of the ewe in a frequent breeding system.

The composition and energy content of empty body-weight change in mature cattle

1984 ◽  
Vol 39 (3) ◽  
pp. 365-369 ◽  
Author(s):  
I. A. Wright ◽  
A. J. F. Russel
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Weight Change ◽  
Protein Concentration ◽  
Energy Content ◽  
Body Weight Change ◽  
Lactating Cows ◽  
Body Weights ◽  
Body Energy ◽  
Standard Energy

ABSTRACTBody-composition data from 73 non-pregnant, non-lactating cows of five genotypes were used to calculate the composition of empty body-weight change in mature cattle. The composition of empty body-weight change was shown to be dependent on empty body weight, containing more fat and less water, protein and ash at higher empty body weights. There were no differences between the genotypes. Between 300 and 600 kg empty body weight the protein concentration in empty body-weight change ranged from 125 to 40 g/kg, whilst application of standard energy values for fat and protein gave equivalent figures for body energy of 22·5 to 32·7 MJ/kg.

The voluntary hay intake by ewes during the first weeks of lactation

1987 ◽  
Vol 44 (3) ◽  
pp. 387-394 ◽  
Author(s):  
F. Bocouier ◽  
M. Thériez ◽  
A. Brelurut
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Milk Production ◽  
Weight Change ◽  
Dry Matter ◽  
Body Weight Change ◽  
Replacement Rate ◽  
Neutral Detergent Fibre ◽  
Ad Libitum

ABSTRACTIn eight experiments, ewes nursing one or two lambs were offered restricted amounts of concentrate in the range 285 to 605 g dry matter (DM) per day and hay ad libitum, from lambing until day 42 of lactation.Hay intake increased sharply during the first 2 weeks and reached its maximum during the 5th or the 6th week. Ewes' body weight at lambing, ewes' body-weight change, and milk production (estimated by litter growth rate) were significantly related to hay intake which depended also on breed (Romanov × Limousine ewes eating more than pure Limousine, P < 0·001) and age (mature ewes eating more than old ewes, P < 0·001) but not on number of suckled lambs.Replacement rate of concentrates for forage increased as lactation progressed (0·53 to 0·86 from first to third fortnight) and varied with hay neutral detergent fibre (NDF) concentration (0·42 or 0·89 for hays with 700 or 500 g NDF per kg DM). Daily hay DM intake decreased by 1·28 g for each gram of hay NDF content increment. The NDF effect was increasingly more important as lactation progressed.Utilization of present results in formulating diets for lactating ewes is discussed.

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