The grazing feed intake of Hereford and Brahman cross cattle in a cool temperate environment

1976 ◽  
Vol 86 (1) ◽  
pp. 131-134 ◽  
Author(s):  
J. B. Moran
Keyword(s):  
Feed Intake ◽  
Weight Change ◽  
Live Weight ◽  
Chromic Oxide ◽  
Excretion Pattern ◽  
Cool Temperate ◽  
Breed Differences ◽  
Different Seasons ◽  
Faecal Nitrogen ◽  
Temperate Environment

SUMMARYThe grazing feed intake of four ¾ Brahman and four purebred Hereford steers was measured on four occasions during 12 months while they grazed improved pastures in a cool temperate environment. When pen fed roughage diets, the excretion pattern of chromic oxide and faecal nitrogen–digestibility relationships were also investigated in these animals.There were no breed differences in the relative recovery of Cr2O3 in the faeces when bulking 10.00 and 17.00 h samples nor were there breed differences in the faecal nitrogen–digestibility regression obtained. However, although there were large discrepancies between feed intake and live-weight change when measured in different seasons, the Herefords had the higher feed intake on each occasion while breed differences in live-weight change were non-significant.

The feed intake of grazing cattle. II. The influence of size of animal on feed intake

1961 ◽  
Vol 3 (03) ◽  
pp. 251-260 ◽  
Author(s):  
W. Holmes ◽  
J. G. W. Jones ◽  
R. M. Drake-Brockman
Keyword(s):  
Organic Matter ◽  
White Clover ◽  
Feed Intake ◽  
Live Weight ◽  
Chromic Oxide ◽  
Grazing Cattle ◽  
Continuous Grazing ◽  
Digestible Organic Matter ◽  
Faecal Nitrogen

1. Two experiments each with 3 dry cows, 3 heifers and 3 calves were carried out in 1959 and 1960 under uniform continuous grazing conditions on a ryegrass-white clover sward to measure individual feed intake by the chromic oxide-faecal nitrogen method.2. Estimates of digestibility were high (70–82% in organic matter) and there was evidence that calves selected a diet of higher digestibility than cows.3. Mean daily estimates of organic matter intake were for cows (1300 lb. live-weight) 23·5 lb., for heifers (790 lb. live-weight) 20·8 lb. and for calves (450 lb. live-weight) 14·3 lb. Corresponding digestible organic matter intakes were 17·4, 15·3 and 11·0 lb.4. Relationships between digestible organic matter intake and liveweight were calculated and the merits of the exponents 0·62 and 0·73 of liveweight discussed.5. The results were compared with accepted cow equivalent standards and, regardless of the exponent chosen, agreed with the system which adopts higher values for young grazing cattle.

Studies on goat nutrition Part I. Minimum protein requirement of goats for maintenance-endogenous urinary nitrogen and metabolic faecal nitrogen excretion studies

1960 ◽  
Vol 54 (3) ◽  
pp. 329-334 ◽  
Author(s):  
B. N. Majumdar
Keyword(s):  
Feed Intake ◽  
Dry Matter ◽  
Live Weight ◽  
Nitrogen Excretion ◽  
Protein Requirement ◽  
Faecal Nitrogen ◽  
Endogenous Urinary Nitrogen ◽  
The One ◽  
Urinary Nitrogen

1. EUN and MFN excretions have been determined in goats on a N-low ration and also on a N-free ration. The values obtained were,EUN = 0·052 g./kg. live weight andMFN = 0·41 g./100 g. dry-matter feed intake.2. The values so determined with the two feeding regimens, for both the EUN and MFN agreed very closely.3. The minimum protein requirement of goats for maintenance, as calculated from the EUN value, is 0·65 lb./1000 lb. live weight.4. The formula for calculating the utilizable protein requirement for this species is found to be P = 0·89. W0.734, and is almost identical with the one given by Mitchell.5. The usefulness of the above formula in predicting the EUN of immature goats is discussed.

The feed intake of grazing cattle. I. Feed intake of dairy cows on strip and free grazing

1960 ◽  
Vol 2 (2) ◽  
pp. 131-139 ◽  
Author(s):  
W. Holmes ◽  
H. El Sayed Osman
Keyword(s):  
Feed Intake ◽  
Live Weight ◽  
Feed Consumption ◽  
Feed Digestibility ◽  
Significant Difference ◽  
Milk Cows ◽  
Faecal Nitrogen ◽  
Free Grazing ◽  
The Difference ◽  
Strip Grazing

1. Eight Ayrshire milk cows were grazed for four 3-week periods from July to October 1957 in a balanced sequence on two strip-grazed and two free-grazed paddocks, each of two acres. Feed intake and digestibility were estimated by the chromic-oxide faecal-nitrogen method.2. There was no significant difference in average feed digestibility between the treatments. Free grazing cows ate 30·4 lb. dry matter per day and strip grazing cows 28·9 lb. The difference was just significant (p<0·05). There was no significant difference in milk yield, live-weight or live-weight gain per cow.3. Total feed output per acre was 11% greater on strip grazing when measured by utilised starch equivalent but only 1 % greater when measured by estimated feed consumption. The data suggest that strip-grazed cattle needed less energy for grazing.4. The results are discussed with reference to their accuracy, their implications on grazing management and their correspondence with estimates of food requirements based on indoor feeding standards.

The effect of age and live-weight on the feed intake of grazing wether sheep

1965 ◽  
Vol 7 (3) ◽  
pp. 309-317 ◽  
Author(s):  
G. Hadjipieris ◽  
G. W. Jones ◽  
W. Holmes
Keyword(s):  
Feed Intake ◽  
Dry Matter ◽  
Age Groups ◽  
Live Weight ◽  
Published Data ◽  
Voluntary Feed Intake ◽  
Digestible Organic Matter ◽  
Faecal Nitrogen ◽  
Effect Of Age ◽  
Clover Pasture

SUMMARY1. Estimates of the voluntary feed intake of three age groups of wether sheep on ryegrass and white clover pasture from July to October, 1962, were made by total collection of faeces and the use of local faecal nitrogen-digestibility regressions.2. Average faecal output and intake of digestible organic matter (DOM) increased with age of the sheep. However, relative to body weight (W) or to W073, the aged sheep (5 years old), which did not change much in weight over the period, consumed only about two-thirds of the DOM consumed by the younger (sixteen- and four-month-old) growing sheep.3. For the growing sheep intake was directly related to weight. Intake was calculated to be 24 W (kg.)–28 ±108 g. DOM per day.4. The results are discussed in relation to the errors in estimation of digestibility. Comparison of the intake estimates with other published data suggests there was a high apparent maintenance requirement. The voluntary feed intakes observed, when expressed as g. dry matter per kg. W0–73, were somewhat higher for young sheep but lower for aged sheep than estimates of previous authors.

scholarly journals The Role of Bole (Lake Soil) as a Mineral Supplement to Arsi-Bale Sheep Fed Natural Grass Hay and Concentrate Supplement

2021 ◽  
Author(s):  
Belete Kuraz ◽  
Adugna Tolera ◽  
Aster Abebe
Keyword(s):  
Body Weight ◽  
Feed Intake ◽  
Weight Change ◽  
Average Daily Gain ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Control Treatment ◽  
Natural Grass ◽  
Grass Hay

Background: Mineral deficiencies are considered to be one of the nutritional constraints to sheep performance. An experiment was conducted to evaluate the role of bole soil on feed intake, live weight change and carcass characteristics of Arsi-Bale sheep fed natural grass hay and concentrate supplement and its cost-benefit analysis of bole soil supplementation. Result: Total DM, OM, CP, NDF, ADF intake and ADL were higher (p less than 0.0001) for T3 than for T1, T2 and T4. Final weight, body weight change, average daily gain and feed conversion efficiency were greater (p less than 0.0001) for T3 and T2 than for T1 and T4. There were no differences (p greater than 0.05) between T3 and T2 whereas T4 was greater than T1 in these variables. Slaughter weight (SW) was heavier (p less than 0.0001) for treatment two and treatment three than for treatment four and treatment one, hot carcass weight, foreleg weight and dressing percentage on empty body weight basis were greater (p less than 0.0001) for T3 and T2 than for T1and T4. Conclusion: Bole soil supplementation had potentially highest effect on feed intake, live weight change and carcass characteristics of Arsi-Bale sheep than non-supplemented groups. The present study also revealed that supplementation of minerals improved the total weight gain of sheep over the control treatment.

The effect of feeding in early lactation on feed intake, yields of milk, fat and protein and on live-weight change over one lactation cycle in dairy cows

1984 ◽  
Vol 103 (3) ◽  
pp. 629-637 ◽  
Author(s):  
C. L. Johnson
Keyword(s):  
Feed Intake ◽  
Weight Change ◽  
Milk Fat ◽  
Live Weight ◽  
Early Lactation ◽  
Weight Changes ◽  
Potential Yield ◽  
Energy Deficiency ◽  
Ad Libitum ◽  
Lactation Cycle

SummaryAn experiment has been made to study the effect of level of feeding in early lactation on the feed intake, yields of milk, fat and protein and on live-weight change over one lactation cycle. Adult British Friesian cows of high potential yield were randomly allocated to high (HP) or moderate (MP) levels of feeding for 20 weeks. They were then randomly allocated within treatments to controlled or ad libitum levels of feeding for the rest of the lactation.There were significant effects of feeding in the early part of lactation on the yields of milk, protein and lactose but not on milk fat or live-weight change. Cows on the MP treatment produced about 450 kg milk from body energy reserves but were unable to supplement fully the dietary energy deficiency. There was no significant response to feeding ad libitum in the second part of lactation and the differences in yields established in the first part were maintained in the second. There was no relationship between feed intake and milk yield for cows fed ad libitum nor did the level of feeding in early lactation influence the level of intake in the later part.There was little agreement between calculated energy balance and the live-weight changes but there was more between live-weight change and condition score.

Productive and adaptive trait differences of Simmental, Hereford and Africander × Hereford cattle

1988 ◽  
Vol 111 (3) ◽  
pp. 475-480 ◽  
Author(s):  
B. M. Burns ◽  
J. E. Vercoe ◽  
C. R. Holmes
Keyword(s):  
Heat Production ◽  
Feed Intake ◽  
Live Weight ◽  
Adaptive Trait ◽  
Voluntary Feed Intake ◽  
Hereford Cattle ◽  
Breed Differences ◽  
Weight Gains ◽  
Productive Traits ◽  
Heat Loads

SummaryAdaptive and productive traits were studied in three genotypes of cattle, Simmental (≥ 7/8 Simmental with residual Hereford) (S), Hereford (H) and F2et seq. Africander × Hereford (AH), selected from the 1985 and the 1986 branded steer groups (Years 1 and 2, respectively) fed low- and high-quality diets.There were significant (P < 0·01) differences between years, breeds and diets for the two groups for live weights at the beginning and end of the feeding period, voluntary feed intake and fasting heat production. However, there was no breed × year interaction except in heat production per unit live weight because the AH had a higher heat production per kg than the H in Year 1 but lower in Year 2. Significantly lower values for feed intake (P < 0·01) and heat production (P <0·01) were recorded for S relative to AH and H when expressed on a live-weight basis; however, the ratio of intake to heat production was similar for all breeds.The S breed had the heaviest birth weights and highest pre-weaning weight gains (P < 0·01) and the AH, despite having birth weights similar to that of the H, had higher pre-weaning live-weight gains (P < 0·01). There were significant (P < 0·01) breed differences for adaptive traits (except for the estimate of helminth resistance), with the AH being more tick- and heat-resistant and having sleeker coats than the other breeds.There were no significant correlations between any adaptive trait and pre-weaning gain despite the fact that ticks, helminths and heat loads were evident.This experiment shows that provided a low plane of nutrition is the only stress imposed on growing cattle, breeds such as the S will perform similarly to British breeds and may perform slightly better.

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