The influence of superphosphate on the legume content of the diet selected by cattle grazing Stylosanthes-native grass pastures

The addition of superphosphate increases the legume content of grass-legume pastures and the growth rate of beef cattle (Shaw, 1978). It has generally been assumed that the increase in beef production following the application of superphosphate is related directly to greater amounts of legume in the pasture consumed (Norman, 1970; Shaw, 1978) but there is no direct evidence on this subject. This paper reports a study of the influence of small quantities of superphosphate on preference for legume by cattle grazing Stylosanthes-native grass pastures.

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Live-weight gains on leucaena and native grass pastures after dosing cattle with rumen bacteria capable of degrading DHP, a ruminal metabolite from leucaena

The Journal of Agricultural Science ◽

10.1017/s0021859600082976 ◽

1988 ◽

Vol 111 (1) ◽

pp. 165-170 ◽

Cited By ~ 22

Author(s):

M. F. Quirk ◽

J. J. Bushell ◽

R. J. Jones ◽

R. G. Megarrity ◽

K. L. Butler

Keyword(s):

Growth Rate ◽

Weight Gain ◽

Live Weight ◽

Cattle Grazing ◽

Rumen Bacteria ◽

Native Grass ◽

Serum Thyroxine ◽

Low Concentrations ◽

Degrading Bacteria ◽

Native Pasture

SummaryThe effect on live-weight gain from dosing cattle with rumen bacteria capable of degrading 3-hydroxy-4(l H)-pyridone (DHP) was measured on cattle grazing leucaena and native grass pastures in south-east Queensland. Dosing increased the growth rate of cattle grazing only leucaena pasture: from 0·52 kg/head per day when not dosed, to 1·03 kg/head per day when dosed, in the period 6·19 weeks after treatment. Dosing did not affect the growth rate of cattle either grazing leucaena with native pasture, or grazing only native pasture. The introduced bacteria spread naturally to untreated cattle after 19 weeks post-dosing.The response to dosing occurred when untreated cattle grazing only leucaena pasture had high urinary concentrations of DHP (maximum 0·28%) and low concentrations of serum thyroxine (< 30 nmol/1). The results show that DHP-induced depressions in growth rate may occur in this environment when cattle graze mainly on leucaena-based pasture. Dosing with DHP-degrading bacteria will overcome this problem.

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Influence of limited fall protein supplementation on performance and forage utilization by beef cattle grazing low-quality native grass pastures

Animal Feed Science and Technology ◽

10.1016/j.anifeedsci.2005.09.006 ◽

2006 ◽

Vol 127 (3-4) ◽

pp. 234-250 ◽

Cited By ~ 6

Author(s):

D.A. Llewellyn ◽

R.C. Cochran ◽

T.T. Marston ◽

D.M. Grieger ◽

C.G. Farmer ◽

...

Keyword(s):

Beef Cattle ◽

Cattle Grazing ◽

Protein Supplementation ◽

Native Grass ◽

Forage Utilization

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Efficiency of nitrogen metabolism in beef cattle grazing pasture and supplemented with different protein levels in the rainy season

Tropical Animal Health and Production ◽

10.1007/s11250-017-1485-3 ◽

2017 ◽

Vol 50 (4) ◽

pp. 715-720 ◽

Cited By ~ 2

Author(s):

Renata Pereira da Silva-Marques ◽

Joanis Tilemahos Zervoudakis ◽

Luciana Keiko Hatamoto-Zervoudakis ◽

Pedro Ivo José Lopes da Rosa e Silva ◽

Núbia Bezerra do Nascimento Matos ◽

...

Keyword(s):

Beef Cattle ◽

Nitrogen Metabolism ◽

Rainy Season ◽

Cattle Grazing ◽

Protein Levels

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A Physiological-Monitoring Electronic Platform for Cattle Grazing Systems

International Journal of Agricultural and Environmental Information Systems ◽

10.4018/ijaeis.2020070101 ◽

2020 ◽

Vol 11 (3) ◽

pp. 1-12

Author(s):

Ricardo R. Santos ◽

Fabiana V. Alves ◽

Patrik O. Bressan ◽

Ricardo E. Aguiar ◽

Wellington O. Santos ◽

...

Keyword(s):

Beef Cattle ◽

Skin Temperature ◽

Mobile Device ◽

Electronic Device ◽

Cattle Grazing ◽

Physiological Data ◽

Physiological Monitoring ◽

Physiological Variables ◽

Non Invasive ◽

Grazing Systems

In this work, we present a non-invasive electronic platform for physiological data acquisition on cattle grazing systems. The platform can be used for dairy and beef cattle to continuously monitor physiological variables such as skin temperature, heartbeats, and respiratory frequency. The set of sensors are coupled into a halter so that they are in touch with the animal's forehead. Users can monitor the data acquired by the electronic device using a mobile device (smartphone or tablet) and it visualizes important physiological parameters in the platform cloud system.

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The effect of level of environment on sex differences in pre-weaning growth rate in beef cattle

Animal Science ◽

10.1017/s0003356100039039 ◽

1977 ◽

Vol 25 (1) ◽

pp. 47-51 ◽

Cited By ~ 4

Author(s):

I. R. Hopkins

Keyword(s):

Growth Rate ◽

Sex Differences ◽

Beef Cattle ◽

Growth Rates ◽

Additive Models ◽

Regression Equations ◽

Male And Female ◽

Breed Differences ◽

Per Se ◽

Simple Regression

SUMMARYUsing pre-weaning records of 3822 calves from 11 Victorian herds, mean male and female growth rates and corresponding sex differences were calculated for each dam age and herd-year class. From these means simple regression equations relating sex differences and growth rates were calculated. There was a close similarity between equations based on dam age means and those based on herd-year means while correlations between sex differences and male growth rates were high.These results showed that sex differences and female growth rates could be predicted reliably from the level of environment as measured by male growth rate. Sex differences predicted by these regression relationships differed markedly from those predicted by the simple multiplicative and simple additive models generally used in adjusting for sex differences in selection.The results also suggested that other differences such as breed differences may be predictable in the same way and that such differences are determined primarily by the level of environment per se rather than differences in the nature of the components contributing to that level.

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Selection and Dietary Quality of Beef Cattle Grazing Smooth Bromegrass, Switchgrass, and Big Bluestem1

The Professional Animal Scientist ◽

10.15232/s1080-7446(15)31039-1 ◽

2007 ◽

Vol 23 (6) ◽

pp. 672-680 ◽

Cited By ~ 5

Author(s):

B.H. Kirch ◽

L.E. Moser ◽

S.S. Waller ◽

T.J. Klopfenstein ◽

G.E. Aiken ◽

...

Keyword(s):

Beef Cattle ◽

Cattle Grazing ◽

Dietary Quality ◽

Smooth Bromegrass

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Genetic aspects of growth and maturing rate in trypanotolerant beef cattle: N'Dama

Nigerian Journal of Animal Production ◽

10.51791/njap.v30i2.1461 ◽

2021 ◽

Vol 30 (2) ◽

pp. 149-156

Author(s):

O. O Mgbere ◽

O. Olutogun

Keyword(s):

Growth Rate ◽

Beef Cattle ◽

Growth Traits ◽

Physiological Stress ◽

Genetic Parameter ◽

High Standard ◽

Parameter Estimates ◽

Production Environment ◽

Genetic Progress ◽

Animal Management

Genetic parameters for Absolute Growth Rate (AGR), Relative Growth Rate (RGR) and Absolute Maturing Rate (AMR) at various age interval from birth to maturity in N 'Dama beef cattle raised in the humid Tropics of Nigeria were estimated. Performance data used were accumulated between 1948 and 1964 at Fasola cattle ranch in Oyo, Nigeria and the number of records analysed ranged from 44 to 678. prewering (B - W) growth and maturing rates in N’Dama calves were 0.377 ± 0.009 kg/day (AGR), 0.643 ± 0.006 %/day (RGR) and 0.120 ± 0.003% A/day (AMR) and fluctuated subsequently, following the animals' state of development and certain physiological stress conditions. At post weaning (W-12), these rates decreased to 0.249 ± 0.049 kg/day, 0.204 ± 0.029 %/day and 0.075 ± 0.014 % A/day for AGR, RGR and AMR respectively. Estimates of heritability at the various age intervals were considered low in these growth traits with values obtained ranging from 0.03 to 0.24 for AGR, 0.03 to 0.21 for RGR and 0.02 to 0.42 for AMR, with high standard errors. The low estimates though, consistent with literature reports were attributed to the poor standard of animal management and production environment at Fasola. It was evident from this study that selection of N'Dama calves based on post weaning (W-12) growth or maturing rates would yield substantial genetic progress. However, improved animal management and production environment on the ranch would not only improve precision of the genetic parameter estimates but would also enhance N 'Dama growth performance generally.

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