scholarly journals “Effect of body measurements on first lactation length in Jersey crosses and Holstein Friesian crosses”

2017 ◽  
Vol 10 (07) ◽  
pp. 71-76
Author(s):  
Rajeev Mishra ◽  
Ram Pal Singh ◽  
Sarvjeet Herbert
Keyword(s):  
Body Measurements ◽  
Lactation Length ◽  
Holstein Friesian

scholarly journals Prediction of the Carcass Value of Young Holstein-Friesian Bulls Based on Live Body Measurements

2014 ◽  
Vol 14 (2) ◽  
pp. 429-439 ◽  
Author(s):  
Paulina Pogorzelska-Przybyłek ◽  
Zenon Nogalski ◽  
Zofia Wielgosz-Groth ◽  
Rafał Winarski ◽  
Monika Sobczuk-Szul ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Multiple Regression ◽  
Live Weight ◽  
Longissimus Dorsi ◽  
Regression Equations ◽  
Body Measurements ◽  
Independent Variables ◽  
Holstein Friesian ◽  
Ultrasound Measurements ◽  
Chest Girth

Abstract The aim of this study was to determine the suitability of ultrasound and zoometric measurements and visual muscle scoring for predicting the carcass value of 167 young Holstein-Friesian (HF) bulls. Zoometric and ultrasound measurements were performed and live muscle scoring was estimated before slaughter. After slaughter, hot carcass weight (HCW) was determined and carcasses were assigned to conformation and fat classes according to the EUROP system. Multiple regression equations were derived to estimate the weight, conformation and fatness of carcasses. HCW was estimated using the following equations: Ŷ = 1.507x1 + 1.103x2 + 4.043x3 + 5.53x4 + 0.379x5 + + 8.076x6 - 678.93 (R2=0.892; Sy = 16.28) and Ŷ = 2.525x4 + 0.579x7 + 0.451x8 - 134.17 (R2=0.943; Sy = 11.84); independent variables x1 - height at sacrum (cm); x2 - chest girth (cm); x3 - pelvic width (cm); x4 - pelvic length (cm); x5 - thickness of M. gluteo-biceps (mm); x6 - intravital muscle scoring (points); x7 - thickness of M. longissimus dorsi (mm); x8 - live weight (kg). Validation of the first regression equation revealed overestimation of HCW by 1.25% on average, while validation of the second equation revealed its underestimation by 1.85% on average. It was found that intravital muscle scoring and selected ultrasound and zoometric measurements of HF bulls can be used in formulating regression equations for predicting the carcass value of live animals. The proposed models enable predicting the carcass value of young bulls with satisfactory accuracy, thus contributing to an objective live beef cattle assessment

scholarly journals Vergleich von vier Merkmalen innerhalb der 50-Punkte-Exterieurbeurteilung mit den erfassten Körpermaßen bei Holstein-Friesian Kühen

2001 ◽  
Vol 44 (1) ◽  
pp. 33-46
Author(s):  
J. Püski ◽  
S. Bozó ◽  
I. Györkös ◽  
A. Gáspárdy ◽  
E. Szücs
Keyword(s):  
Correlation Coefficients ◽  
The Body ◽  
Body Measurements ◽  
Body Measurement ◽  
Typing Method ◽  
Body Depth ◽  
Average Value ◽  
Holstein Friesian ◽  
The Individual ◽  
Large Animals

Abstract. Title of the paper: Comparison of the conformation scoring and the body measurement based on four linear traits of Holstein Friesian cows The goal was evaluate the similarity of the body scoring System and the body measurement kept generally for the best objective method. The target-traits (withers height, body depth, rump width at the gluteal tuberosity and body capacity) of Holstein Friesian heifers were taken down. Three-three groups (−extreme, medium, +extreme) based on the Standard deviation of the body measurements were created and compared in each traits, as well as phenotypic relationships (regression and correlation) were calculated. Taking the relationships into consideration it appeared that the body measurements do not stand in such a close connection with each other than it is suggested by the scoring. The pair-wise correlation coefficients between the values of the same traits taken down by scoring and measuring Systems can by seen as low figures (r = 0.71, 0.50, 0.43 and 0.59, respectively) since we have the same traits. The partial correlation coefficients are even more less than the pair-wise correlation coefficients, and statistically confirmed only by the height at wither. Except the height at wither, there were no demonstrable connections in the regression of the same traits, just then, exclusively the true height at wither influenced the classifier during the scoring of all the traits. The differences between the type groups were smaller in each traits estimated by scoring. From the analysis of the type groups it is obvious that the similarity of the two methods is the biggest in the height at wither. In the case of body depth, rump width and body capacity the classifier can distinguish only the "very little" and "very large" animals from the judged population while the intermediate types remained unrecognised. The average value of the individual identity between the two typing method was around 35%.

scholarly journals Linear body measurements and productivity of subtropical Holstein–Friesian dairy calves

2020 ◽  
Vol 98 (7) ◽  
pp. 280-289
Author(s):  
A Hewitt ◽  
TWJ Olchowy ◽  
AS James ◽  
B Fraser ◽  
S Ranjbar ◽  
...  
Keyword(s):  
Dairy Calves ◽  
Body Measurements ◽  
Holstein Friesian ◽  
Linear Body

Effects of age and liveweight at first calving on first lactation milk, protein and fat yield of Friesian heifers

2001 ◽  
Vol 41 (1) ◽  
pp. 13 ◽  
Author(s):  
R. C. Dobos ◽  
K. S. Nandra ◽  
K. Riley ◽  
W. J. Fulkerson ◽  
I. J. Lean ◽  
...  
Keyword(s):  
Milk Protein ◽  
Combined Effects ◽  
Negative Effects ◽  
Treatment Groups ◽  
Grazed Pasture ◽  
Lactation Length ◽  
Holstein Friesian ◽  
The Individual ◽  
Lower Production

This paper reports on both the individual and combined effects of age (AFC) and liveweight (LWFC) at first calving for Australian Holstein–Friesian heifers on first lactation production. One hundred and thirty-five Australian Holstein–Friesian heifers were allocated to 1 of 3 AFC treatments. Within each AFC treatment, heifers were randomly assigned to 1 of 3 LWFC treatments. Heifers in all groups grazed pasture and were supplemented when the quantity and quality of pasture was inadequate to meet growth requirements. Mean AFC and LWFC achieved were 25.1, 29.9 and 33.9 months and 498, 549 and 595 kg, respectively. Mean liveweight gains from 16 weeks of age to calving ranged from 0.45 to 0.71 kg/day, depending on treatment. The heifers calving at 33.9 months of age produced 6.6 and 12.3% more milk, 6.3 and 11.9% more protein and 5.4 and 12.2% more fat than those calving at 29.9 and 25.1 months of age at the end of their first 300 day lactation, respectively. The lower production of the younger cows was associated with decreased daily output rather than by shorter lactation length. Heifers averaging 595 kg at first calving produced 5.5% more milk, 8.4% more protein and 11.4% more fat than those averaging 498 kg in first lactation, respectively. The heifers averaging 621 kg LWFC and 34 months AFC had the highest production of the 9 treatment groups. Production was increased by 5.35 L milk, 0.19 kg protein and 0.23 kg fat for an additional 1 kg LWFC, respectively. For each month delay in AFC, production was increased by 66.7 L milk, 1.87 kg protein and 2.36 kg fat, respectively. The combined effects of AFC and LWFC showed that to offset the negative effects of a 1 month reduction in AFC on milk, protein and fat yields in first lactation, LWFC would have to be increased by 8.1, 4.0 and 4.5 kg, respectively. Under the conditions of this experiment, maximum milk, protein and fat were estimated to be achieved at 559, 563 and 568 kg liveweight at first calving, respectively.

The effects of genotype and management on lactation persistency in dairy cows

1996 ◽  
Vol 1996 ◽  
pp. 2-2
Author(s):  
B J McGuirk ◽  
J A Woolliams ◽  
V Olori
Keyword(s):  
Dairy Cows ◽  
Protein A ◽  
Subsequent Performance ◽  
Lactation Length ◽  
Genetic Potential ◽  
Complete Diet ◽  
Holstein Friesian ◽  
High Production ◽  
Nucleus Breeding ◽  
Open Nucleus

The MOET open herd operated by Genus is an open-nucleus breeding programme, designed to identify superior families and individual females. The herd of 250 cows was established over the period 1987-1990, with embryos from high genetic merit dams in North America. Subsequently, replacement heifers have been bred both from donors selected within the nucleus herd, and from external donors. The herd is milked three times a day, and fed a high-quality complete diet, to maximise production and so facilitate selection. Average NMR 305 day production figures for 440 heifers were 8995 kg, at 3.88% and 3.41% protein. A relatively high proportion of the herd is kept open for embryo production, with 40% of these heifers milking beyond 400 days and 13% for over 500 days. Data from the MOET project are currently being used to model production up to and beyond 305 days, and to establish correlations between performance in early and extended lactations and between lactation length and subsequent performance. These results will be discussed in the context of options for calving interval available to high production-high genetic potential Holstein Friesian herds.

scholarly journals 189 PRODUCTIVE AND REPRODUCTIVE PROFILE OF HOLSTEINS KEPT IN BALOCHISTAN PROVINCE, PAKISTAN

2005 ◽  
Vol 17 (2) ◽  
pp. 245
Author(s):  
M. Bilal ◽  
M.Y. Lodhi ◽  
S. Chawanakul ◽  
M.A. Kakar
Keyword(s):  
Milk Yield ◽  
Reproductive Potential ◽  
Environmental Data ◽  
Local Conditions ◽  
Production Parameters ◽  
Lactation Length ◽  
Service Period ◽  
Holstein Friesian ◽  
Productive Potential ◽  
Variable Impact

Holstein-Friesian has been rated the number one cattle in the world as far as milk production is concerned. The productive potential is excellent in European countries. Animals of the same breed were imported to meet the milk demand of developing countries such as Pakistan. One thousand cattle from Denmark were imported in 1977–78 by the Balochistan government, and were kept at government dairy farms at seven locations (viz., Kalat, Khuzdar, Loralai, Mastung, Pishin, Quetta, and Zhob). The aim of this study was to determine the productive [age at first calving (AFC), birth weight (BWT), lactation length or milk yield (MY), milk yield per lactation (MYL), days in milk (DIM), and culling and mortality (C&L)] and reproductive potential [service period (SP), age at first service (AFS), gestation period (GP), and calving interval (CI)] of these imported animals while kept under the local conditions of Balochistan. Effect of localities with respect to the environmental data was also explored. Overall average values for AFS were 315 to 986 days with an average of 660.42 ± 12.42, GP 275 to 299 days with an average of 280.62 ± 0.25, and AFC 604 to 1299 days with an average of 944.08 ± 12.71. BWT ranged from 15 to 68 kg with an average of 30.12 ± 0.15, MY from 1471 to 7035 liters with an average of 3731.26 ± 40.52, DIM from 180 to 728 days with an average of 313.56 ± 3.83, and SP ranged from 29 to 886 days with an average of 240 ± 9.61, DP averaged 59.15 ± 20.61 days and CI ranged from 301 to 922 days with an average of 451.10 ± 5.55. The effects of year, season, age, and location were studied and the results revealed that the year influenced the AFS, AFC, BWT, and SP (P < 0.01); GP (P < 0.05) but not DIM and CI (P > 0.05). No effect of season on AFS, AFC, DIM, MY, SP or CI (P > 0.05) was observed, but GP and BWT (P < 0.05) were affected by season. Age influenced the GP and SP (P < 0.05) but not BWT, DIM, MY, and CI (P > 0.05). No effect of sex of the calves, type of birth, and calving number on GP (P > 0.05) was seen. Location of the farm did effect AFS, AFC, BWT, and MY (P < 0.01); CI (P < 0.05); but not GP, DIM, and SP (P > 0.05). In conclusion, differences in environment and seasonality had a variable impact on production parameters in Holstein-Friesian calves.

scholarly journals The Effect of Carcass Conformation Class (Europ System) on the Slaughter Quality of Young Crossbred Beef Bulls and Holstein-Friesians / Porównanie wartości rzeźnej buhajków mieszańców mięsnych i holsztyno-fryzów w zależności od klasy uformowania w systemie EUROP

2013 ◽  
Vol 13 (1) ◽  
pp. 121-131 ◽  
Author(s):  
Zenon Nogalski ◽  
Marek Wroński ◽  
Zofia Wielgosz-Groth ◽  
Cezary Purwin ◽  
Monika Sobczuk-Szul ◽  
...  
Keyword(s):  
Intramuscular Fat ◽  
Quality Parameters ◽  
Body Measurements ◽  
Meat Content ◽  
Holstein Friesian ◽  
Carcass Conformation ◽  
Beef Bulls ◽  
Cattle Herds ◽  
Intramuscular Fat Content

Abstract The objective of this study was to determine the effect of genotype and carcass conformation class on the slaughter quality of 200 young bulls, including 108 crossbred beef bulls and 92 Holstein- Friesians (HF), aged 21-22 months, selected in the lairage. The lean meat content was estimated and body measurements were taken before slaughter. After slaughter, the carcasses were graded according to the EUROP system, and carcass quality parameters were determined. Intramuscular fat was extracted from samples of m. longissimus dorsi, and the fatty acid profile of extracted fat was determined by gas chromatography. 61.11% carcasses of crossbred beef bulls were graded in the conformation class R, and 56.53% carcasses of Holstein-Friesians were classified as O. The majority of carcasses belonged to fat class 2, which was not consistent with intramuscular fat content. Within the same conformation classes, crossbred beef bulls were characterized by higher slaughter quality than Holstein-Friesian bulls. Meat from hybrid beef bulls had a higher (by 0.42% on average) content of fat with a more desirable composition. Since the population size of beef cattle will probably not increase in the nearest future, efforts should be continued to optimize the production of high-quality beef from dairy cattle herds.

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