The effect of slaughter weight on boning out characteristics of Holstein-Friesian male cattle

2005 ◽  
Vol 2005 ◽  
pp. 3-3
Author(s):  
R.M. Kirkland ◽  
T.W.J. Keady ◽  
D.C. Patterson ◽  
R.W.J. Steen
Keyword(s):  
Low Cost ◽  
Dairy Herds ◽  
Beef Industry ◽  
Potential Yield ◽  
Slaughter Weight ◽  
Bull Calves ◽  
Dairy Traits ◽  
Holstein Friesian ◽  
Potential Resource ◽  
Carcass Conformation

The continuing trend for increased use of Holstein genetics in dairy herds has resulted in a large number of Holstein-Friesian bull calves becoming available, at low cost, as a potential resource for the beef industry. However, whilst these calves have been bred for dairy traits, which are negatively correlated to many important beef traits (e.g. carcass conformation), it is important to determine the potential yield of boned out joints from these animals, in order to facilitate an assessment of commercial carcass value. The objective of the present study was to evaluate the effect of slaughter weight on yield of boned out joints from Holstein-Friesian bulls and steers offered a cereal-based diet.

The effect of slaughter weight on production characteristics of Holstein-Friesian male cattle

2005 ◽  
Vol 2005 ◽  
pp. 1-1
Author(s):  
R.M. Kirkland ◽  
T.W.J. Keady ◽  
D.C. Patterson ◽  
R.W.J. Steen
Keyword(s):  
Production Systems ◽  
Low Cost ◽  
Future Market ◽  
Beef Industry ◽  
Slaughter Weight ◽  
Bull Calves ◽  
Dairy Traits ◽  
Holstein Friesian ◽  
Feeding Regimes ◽  
Production Characteristics

Holstein-Friesian bull calves, although bred for dairy traits, are available at low cost as a potential resource for the beef industry. Finishing of these cattle on intensive feeding regimes has become more attractive in recent years reflecting, inter alia, the reduction in cereal prices and availability of subsidy payments. However, in the future, market-driven economy, production systems must become more efficient if they are to remain viable. The objective of the present study was to evaluate the effect of slaughter weight on production characteristics of Holstein-Friesian bulls offered cereal-based diets, whilst also evaluating the effects of sexual status on performance attributes.

The effect of slaughter weight on growth and carcass traits of Holstein-Friesian bulls offered a cereal-based diet

2002 ◽  
Vol 2002 ◽  
pp. 156-156
Author(s):  
R.M. Kirkland ◽  
R.W.J. Steen ◽  
D.C. Patterson
Keyword(s):  
Feed Efficiency ◽  
Carcass Traits ◽  
Minimum Cost ◽  
Beef Industry ◽  
Slaughter Weight ◽  
Bull Calves ◽  
Holstein Friesian ◽  
Beef Producers ◽  
Ready Availability ◽  
Production Characteristics

With the current situation of low profitability in the beef industry, producers must aim to produce beef efficiently and at minimum cost. In view of the ready availability of Holstein Friesian bull calves as a by-product of the dairy industry, the rearing and finishing of these animals offers a possible source of income to beef producers. The objective of the present study was to examine the influence of slaughter weight on feed efficiency and production characteristics of Holstein-Friesian bulls offered a cereal-based diet.

The effect of slaughter weight on meat quality characteristics of Holstein-Friesian male cattle

2005 ◽  
Vol 2005 ◽  
pp. 176-176 ◽  
Author(s):  
R. M. Kirkland ◽  
T. W. J. Keady ◽  
D. C. Patterson ◽  
B. W. Moss ◽  
R. W. J. Steen
Keyword(s):  
Meat Quality ◽  
Dairy Herd ◽  
Quality Characteristics ◽  
Slaughter Weight ◽  
Dairy Traits ◽  
Holstein Friesian ◽  
Ready Availability

Meat from Holstein-Friesian bulls, which are bred for dairy traits, is generally regarded as low quality and is usually destined for the commodity (mince) market. However, given their ready availability as a by-product from the dairy herd, it is important to determine if meat from these animals would be suited to higher-priced markets. Furthermore, meat from bulls is generally considered to be lower quality than that from steers, though there is a paucity of data comparing meat from both sources. Hence, the objective of this study was to evaluate the effect of slaughter weight on meat quality characteristics of Holstein-Friesian bulls and steers offered a cereal-based ration.

scholarly journals Reproductive Performance and Partial Budget Analysis of a Prostaglandin or a Modified Ovsyn3ch Protocol in Autumn Calving Dairy Herds

Animals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1031
Author(s):  
George Lindley ◽  
Jim Willshire ◽  
Steven Van Winden
Keyword(s):  
Relative Effectiveness ◽  
Dairy Herds ◽  
Net Benefit ◽  
Start Date ◽  
Budget Analysis ◽  
Partial Budget ◽  
Holstein Friesian ◽  
Input Variables ◽  
Input Uncertainties ◽  
Relative Profitability

In autumn calving dairy herds, treatment of cattle not observed in estrus prior to the breeding season is common. Routinely, a single prostaglandin or a modified Ovsynch (MOFT) protocol are used—without evidence of their relative effectiveness. This study compares the effects on conception, associated timing, and profitability of administering cows with prostaglandin or MOFT treatment. A hundred and ninety-two Holstein-Friesian cows from three herds without an observed estrus within 28-days before mating start date were randomly treated with d-cloprostenol (PGOD) or an 8-day MOFT protocol. The association of treatment and calving-breeding start-date interval (CBSI) on the risk of conception were investigated. Partial budget, sensitivity analysis, and Monte Carlo simulation was used to assess economic performance, identify critical input variables, and explore the effects of input uncertainties on model output. There was a significant association between MOFT treatment and conception during 21 and 84 days after mating start date, compared to PGOD. MOFT treatment was associated with a mean net benefit of £58.21 (sd £19.42) and £27.29 (sd £17.75) per cow for herds with a fixed or variable dry-off date, respectively. The relative profitability of an MOFT protocol is dependent on its effects on barren rate and herd dry-off strategy.

Meat quality and carcass characteristics of Norwegian dairy and Holstein-Friesian cattle

2007 ◽  
Vol 2007 ◽  
pp. 110-110
Author(s):  
R.M. Kirkland ◽  
D.C. Patterson ◽  
B.W. Moss ◽  
T.W.J. Keady ◽  
R.W.J. Steen
Keyword(s):  
Meat Quality ◽  
Production Systems ◽  
Carcass Characteristics ◽  
Quality Parameters ◽  
Quality Characteristics ◽  
Production Data ◽  
Dairy Traits ◽  
Holstein Friesian ◽  
Friesian Cattle ◽  
Norwegian Dairy

Any evaluation of breeds or production systems for beef must consider effects on production, carcass and meat quality characteristics. Holstein-Friesian (HF) cattle are bred for dairy traits only, while Norwegian dairy cattle (NOR) have been selected with some emphasis on beef characteristics. A comparison of production data from bulls of these two breeds has been presented previously (Kirkland et al., 2005). The objective of the present study was to evaluate specific carcass and meat quality parameters of HF and NOR bulls.

scholarly journals Molasses as a possible cause of an ''endocrine disruptive syndrome'' in calves

2009 ◽  
Vol 76 (2) ◽  
Author(s):  
M.S. Masgoret ◽  
C.J. Botha ◽  
J.G. Myburgh ◽  
T.W. Naude ◽  
L. Prozesky ◽  
...  
Keyword(s):  
Clinical Pathology ◽  
Mass Gain ◽  
In Vitro Assays ◽  
Control Group ◽  
Dairy Herds ◽  
Disruptive Effect ◽  
Feeding Trial ◽  
Cattle Feed ◽  
Bull Calves

During the mid 1990s a potentially serious, chronic syndrome was reported in well-managed beef and dairy herds from unrelated parts of South Africa. Farmers reported that it manifested as various combinations of decreased production, decreased weaning masses, apparent immune breakdown in previously immunocompetent animals, increased reproductive disorders, various mineral imbalances in non-deficient areas and goitre, noticeable as enlarged thyroid glands. The farmers associated this syndrome with certain batches of sugar cane molasses and molasses-based products. The syndrome was reminiscent of an ''endocrine disruptive syndrome''. The objective of this study was to evaluate the suspected endocrine disruptive effect of molasses included in cattle feed. Using existing in vitro assays, four batches of molasses syrup were screened for possible inclusion in a calf feeding trial. Two batches were selected for the trial. Thirty-two, 4- to 6-week-old, weaned Holstein bull calves were included in the single phase, three treatment, parallel design experiment. In two of the groups of calves, two different batches of molasses were included in their rations respectively. The control group was fed a ration to which no molasses was added, but which was balanced for energy and mineral content. The mass gain of the calves was recorded over the 6-month study period. The calves were clinically examined every week and clinical pathology parameters, immune responses and endocrine effects were regularly evaluated. Even though endocrine disrupting effects were detected with the in vitro screening assays, these could not be reproduced in the calves in the experiment. The two batches of molasses utilized in the calf feeding trial did not induce major differences in any of the parameters measured, with the exception of a lower mass gain in one of the molasses-fed groups (Group 1), which tended towards significance. The results of the study indicate that the two batches of molasses had no endocrine disruptive or immunosuppressive effects in calves.

A comparison of the fertility of Holstein Friesian and Norwegian Dairy Cattle under low and high nutrient input systems

2001 ◽  
Vol 2001 ◽  
pp. 217-217
Author(s):  
A.D. Crawford ◽  
C.S. Mayne ◽  
M.A. McCoy ◽  
D. Lennox
Keyword(s):  
Dairy Cattle ◽  
Selection Procedure ◽  
Dairy Herds ◽  
Nutrient Input ◽  
Milk Output ◽  
Holstein Friesian ◽  
Nutrient Utilisation ◽  
Breeding Programmes ◽  
The Uk ◽  
Norwegian Dairy

Until relatively recently, breeding programmes for Holstein Friesian (HF) dairy cattle have focused selection procedures on increasing milk output with little emphasis on secondary traits such as fertility. As a result the fertility of the Holstein Friesian dairy animal is currently declining in the UK. This decline in fertility causes particular problems in seasonal calving dairy herds, where compact calving is crucial to overall performance of this system. In the Norwegian dairy cattle (NC) breeding programme, emphasis has been placed on a multi trait selection procedure including fertility and disease resistance. There is evidence that this selection procedure has resulted in improved fertility within the NC population. The present study is part of an overall programme comparing the performance of HF and NC cattle with respect to food intake, animal performance, nutrient utilisation, behaviour, health, fertility and longevity. The objective of the present study was to investigate possible differences in fertility between the two breeds when offered either a high or a low nutrient input diet based on grass silage.

HERITABILITIES OF TEAT CONFORMATION TRAITS AND THEIR RELATIONSHIPS WITH SOMATIC CELL COUNTS IN HOLSTEINS

1980 ◽  
Vol 60 (2) ◽  
pp. 231-239 ◽  
Author(s):  
SUSAN HIGGINS ◽  
R. K. MOORE ◽  
B. W. KENNEDY
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Maximum Likelihood Estimates ◽  
Dairy Herds ◽  
Udder Health ◽  
Stage Of Lactation ◽  
Cell Counts ◽  
Holstein Friesian ◽  
Highly Correlated ◽  
Friesian Cows

Teat conformation characteristics were measured on 402 Holstein-Friesian cows in 18 dairy herds in western Quebec and eastern Ontario. The purpose of the study was to determine the effects of heridity on teat conformation traits as well as to examine phenotypic relationships between the traits and somatic cell count as a measure of udder health. Maximum likelihood estimates of heritabilities of teat conformation traits and cell count, transformed to a log scale, were low; usually less than 0.10. Exceptions were length of front teat (h2 = 0.44) and distance of udder to the floor (h2 = 0.41). Significantly higher cell counts were associated with teats that were long, wide, not plumb and bottle (as opposed to cylindrical or funnel) shaped. The most highly correlated trait with cell count was distance of udder to the floor (r = − 0.24). However, many of the significant gross relationships observed were jointly related with age of cow, and when the effects of age of cow at calving, stage of lactation and herd were removed, only length of rear teat and front and rear teat medial diameters had significant influences on cell count.

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