scholarly journals COMPARISON OF MILK PRODUCTION OF THE PROGENY OF BLAD-CARRIER AND HEALTHY HOLSTEIN BULLS IN HUNGARY

1999 ◽  
Vol 47 (3) ◽  
pp. 283-289 ◽  
Author(s):  
Ágnes Jánosa ◽  
J. Dohy ◽  
B. Baranyai
Keyword(s):  
Milk Production ◽  
Leukocyte Adhesion ◽  
Breeding Value ◽  
Total Production ◽  
Leukocyte Adhesion Deficiency ◽  
Production Index ◽  
Holstein Friesian ◽  
Elimination Programme ◽  
Holstein Bulls ◽  
Friesian Cattle

'Bovine Leukocyte Adhesion Deficiency' (BLAD) is a recessive monofactorial, lethal inheritable defect occurring in Holstein-Friesian cattle and often passed on by well-known top bulls. The aim of this study was to find a relationship between the BLAD genotype of bulls, their genetic evaluation for milk and their daughters' milk production. BLAD-carrier and healthy bulls were compared on the basis of their breeding value published in November 1997. The first 100 bulls ranked according to the Total Production Index (TPI) were used, including nine BLAD carriers with 2,835 daughters and 77 healthy sires with 21,950 female progenies. For 14 bulls the BLAD genotype was not indicated. The healthy animals significantly outperformed the BLAD carriers, which result contradicts our earlier findings (Dohy et al., 1996; Jánosa and Dohy, 1997). In a BLAD elimination programme, the identification of BLAD carriers and properly planned mating are of great importance in order to avoid'inter se'mating of BLAD-carrier top animals which can be of significant influence in Holstein breeding.

scholarly journals Bovine Leukocyte Adhesion Deficiency in Danish Holstein-Friesian Cattle

1993 ◽  
Vol 34 (3) ◽  
pp. 231-236
Author(s):  
C.B. Jørgensen ◽  
J.S. Agerholm ◽  
J. Pedersen ◽  
P.D. Thomsen
Keyword(s):  
Leukocyte Adhesion ◽  
Leukocyte Adhesion Deficiency ◽  
Holstein Friesian ◽  
Friesian Cattle

scholarly journals Bovine Leukocyte Adhesion Deficiency in Danish Holstein-Friesian Cattle

1993 ◽  
Vol 34 (3) ◽  
pp. 237-243 ◽  
Author(s):  
J. S. Agerholm ◽  
H. Houe ◽  
C. B. Jørgensen ◽  
A. Basse
Keyword(s):  
Leukocyte Adhesion ◽  
Leukocyte Adhesion Deficiency ◽  
Holstein Friesian ◽  
Friesian Cattle

Relationships among udder type traits and milk yield of Iranian Holstein-Friesian cattle

2003 ◽  
Vol 2003 ◽  
pp. 141-141
Author(s):  
M. R. Sanjabi ◽  
M. G. Govindaiah ◽  
M. M. Moeini
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Genetic Correlations ◽  
Holstein Friesian ◽  
Type Traits ◽  
High Production ◽  
Friesian Cattle

Correlation among type traits and with milk production has been investigated by Brotherstone (1994) and Misztal et al (1992). One of the primary reasons for collecting and utilizing information on type traits is to aid breeders in selecting profitable functional cows for high production and suitable herd life. The objectives of this study were to estimate phenotypic and genetic correlations among milk production and with udder traits.

scholarly journals Modeling for determining the superiority of Holstein bulls as frozen semen producer and genetic source for milk production

2019 ◽  
Vol 44 (1) ◽  
pp. 47 ◽  
Author(s):  
A. Argiris ◽  
S. I. Santoso ◽  
Y. S. Ondho ◽  
E. Kurnianto
Keyword(s):  
Milk Production ◽  
Structural Equation ◽  
Least Square Method ◽  
Partial Least Square ◽  
Least Square ◽  
Breeding Value ◽  
Reproductive Efficiency ◽  
Genetic Traits ◽  
Frozen Semen ◽  
Holstein Bulls

The objective of this study was to develop models for determination the superiority of Holstein bulls as a producer of frozen semen and inheritance of the genetic traits of milk production. The ability of the bull to produce frozen semen per years was analyzed descriptively. Reproductive efficiency of frozen semen in artificial insemination was calculated by service per conception (S/C). Estimation sire breeding value for milk production was calculated by contemporary comparison (CC) method. Model of superiority bulls was analyzed by Structural Equation Model with Partial Least Square method (SEM-PLS). Total average production of frozen semen was 23,109±14,970 doses/year. The average S/C was 2.83. The CC value ranged from -1,865.7 until +1,636.3. Potency of milk production resulted from lactation cow offspring per bulls ranged from 951,749.2 to 52,347,822.9 liters per year. The economic value of bulls based on the potency milk production of offspring ranges from IDR 4,758,745,999 to IDR 261,739,114,505. The superiority of bulls was affected significantly (P<0.05) by frozen semen production, reproductive efficiency and average milk production of daughter cows (DC) as much as 0.59, -0.53 and 0.33, respectively. In conclusion, the superiority of bull can be explained about 78.3% by the production of frozen semen production, reproductive efficiency and milk production of offspring.

THE EFFECTS OF DAYS DRY AND DAYS OPEN ON THE MILK AND BUTTERFAT PRODUCTION OF HOLSTEIN-FRIESIAN CATTLE

1967 ◽  
Vol 47 (1) ◽  
pp. 85-90 ◽  
Author(s):  
J. W. Wilton ◽  
E. B. Burnside ◽  
J. C. Rennie
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Holstein Friesian ◽  
Dairy Animals ◽  
Days Open ◽  
Friesian Cattle ◽  
Selection Of

The effect of days dry and days open on first, second and later lactation production was examined by intra-sire-herd-season regression. Neither variation in days dry nor days open accounted for more than 1% of the within-sire variance in fat test. Variation in preceding days dry accounted for 4.8% of the within-sire variance in milk production in second lactations but only 0.6% of the variance in later lactations. Differences in days open accounted for 4.5, 3.5, and 4.5% of the intra-sire variance in milk production in first, second, and later lactations, respectively. The effects of days dry and days open on fat production were, in all cases, slightly less than the effects on milk production. Heritabilities for both traits were low, indicating that the effects of both days dry and days open on production were largely of an environmental nature. Adjustment of milk yield for the number of days cows are open could lead to more accurate selection of dairy animals.

Prediction Breeding Value and Genetic Parameter in Iranian Holstein Bulls for Milk Production Traits

2007 ◽  
Vol 11 (1) ◽  
pp. 108-112 ◽  
Author(s):  
Mojtaba Hosseinpour Mashhadi ◽  
Naser Emam Jomeh Kash ◽  
Mohammad Reza Nassiry ◽  
Rasol Vaez Torshizi
Keyword(s):  
Milk Production ◽  
Genetic Parameter ◽  
Breeding Value ◽  
Production Traits ◽  
Milk Production Traits ◽  
Holstein Bulls
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