scholarly journals MILK PRODUCTION POTENTIALS OF HOLSTEIN-FRIESIAN CATTLE IN THE DERIVED-SAVANNAH ZONE

2021 ◽  
Vol 22 (1) ◽  
pp. 85-88
Author(s):  
C. F. I. ONWUKA ◽  
D. W. EGBE ◽  
B. I. UMOH ◽  
B. I. OKON
Keyword(s):  
Milk Production ◽  
Environmental Temperature ◽  
Cow Milk ◽  
Cross River State ◽  
Derived Savanna ◽  
Holstein Friesian ◽  
Average Relative Humidity ◽  
The Tropics ◽  
Savannah Zone ◽  
Friesian Cattle

Some 78 Holstein-Friesian cattle in a private commercial farm in the derived savanna zone of Northern Cross River State were used in the study that reported the milk production potentials of Friesian cattle in the tropics. The Cows were stall-fed with supplementary concentrates and forage within the 306-day study period. Their milk records showed production levels ranging from 0.00 to 14.92£0.83 kg milk per cow per day. Individual cow milk yield as high as 15.77 kg/day (P<0.05) was obtained in June. Production dwindled with the onset of the dry season while milk production levels decreased significantly (P<0.05) as lactation progressed. During the period, the environmental temperature varied between 23.08 -1.90oC and 38.35 0.75°C while the average relative humidity was between 26% and 95%. The main disease problem encountered was mastitis. Lactation levels were still fair up to 214th day of Lactation.

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 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.

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.

Overmilking causes deterioration in teat-end condition of dairy cows in late lactation

2013 ◽  
Vol 80 (3) ◽  
pp. 344-348 ◽  
Author(s):  
J Paul Edwards ◽  
Bernadette O'Brien ◽  
Nicolas Lopez-Villalobos ◽  
Jenny G Jago
Keyword(s):  
Milk Production ◽  
Flow Rate ◽  
Cow Milk ◽  
Udder Health ◽  
Milk Samples ◽  
Bulk Milk ◽  
Milk Flow ◽  
Holstein Friesian ◽  
Mixed Age ◽  
Friesian Cows

The objective of the study was to determine the effect of varying degrees of overmilking on teat-end hyperkeratosis, milk production variables and indicators of udder health during late lactation. This was examined by assessing the effect of four end-of-milking criteria on 181 spring-calving, mixed-age Holstein-Friesian cows, at an average 217±24 d in milk, over a six-week period. The four treatments were: remove cluster once milk flow rate fell to 0·2 kg/min plus 5 s (Ovr0), plus 120 s (Ovr2), plus 300 s (Ovr5), and plus 540 s (Ovr9). Daily measurements included individual cow milk yield, milking duration, overmilking duration, maximum milk flow rate, milk flow rate at cluster removal and the number of cluster re-attachments. Individual cow bulk milk samples were collected weekly at AM and PM milkings to determine composition (fat, protein and lactose) and somatic cell count (SCC; AM only). Teat-end hyperkeratosis score was assessed at weeks 0, 3, 5 and 6. At week 6 mean teat-end hyperkeratosis score of the Ovr2 treatment was not greater than Ovr0, whilst Ovr5 was greater than Ovr2 and Ovr9 was greater than Ovr5 and Ovr2. Milk production, milking characteristics and SCC were not different between treatments, except milking duration and milk flow rate at cluster removal. However, higher teat-end hyperkeratosis scores may have a longer-term impact on indicators of udder health if teat-end condition reaches severe levels. Results indicate that to minimise changes in teat-end condition overmilking should be limited to 2 min, which has implications for milking management in large parlours not fitted with automatic cluster removers.

Adding bentonite to sorghum grain-based supplements has no effect on cow milk production

1997 ◽  
Vol 37 (5) ◽  
pp. 505 ◽  
Author(s):  
W. K. Ehrlich ◽  
T. M. Davison
Keyword(s):  
Milk Production ◽  
Crude Protein ◽  
Lolium Multiflorum ◽  
Latin Square ◽  
Cow Milk ◽  
Meat And Bone Meal ◽  
Rumen Ph ◽  
Holstein Friesian ◽  
Sorghum Grain ◽  
Friesian Cows

Summary. Twenty-four Holstein–Friesian cows were used in an experiment comparing milk production from cows offered rolled sorghum grain either alone at 8 or 10 kg/head. day of air-dried grain or with 4% sodium bentonite. The design was a 4 × 4 latin square with a 1 week adjustment period and a 3 week treatment period. This design was used to highlight the effects of high levels of grain feeding and changing that level of grain or grain–bentonite every 4 weeks. Cows grazed either ryegrass (Lolium multiflorum cv. Tetila) or oats (Avena sativa cv. Cluan) during the day and a mixed ration based on maize silage, lucerne hay, and meat and bone meal at night. There was no significant effect of treatments on milk yield or composition. Cows fed bentonite had a higher (P<0.05) rumen pH, tended to eat less grain sorghum and have lower concentrations of rumen ammonia and faecal starch. Faecal crude protein tended to increase with the use of bentonite indicating cows may have substituted pasture or mixed ration for grain and maintained a more stable rumen fermentation.

Inbreeding and inbreeding depression in Irish Holstein-Friesian cattle

2007 ◽  
Vol 2007 ◽  
pp. 63-63
Author(s):  
S. Mc Parland ◽  
J.F. Kearney ◽  
M. Rath ◽  
D.P. Berry
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Milk Production ◽  
Inbreeding Depression ◽  
Milk Fat ◽  
Somatic Cell Count ◽  
Protein Production ◽  
Holstein Friesian ◽  
Related Individuals ◽  
Friesian Cattle

Inbreeding occurs when related individuals are mated to each other. Inbreeding reduces milk production, and impairs health, fertility and survival; a phenomenon known as inbreeding depression. Smith et al. (1998) reported losses in milk yield of 27 kg per 1% increase in inbreeding in US Holsteins. The objective of this study was to investigate the level of inbreeding in Irish Holstein-Friesian cattle and to quantify its effect on milk, fat and protein production and somatic cell count.

scholarly journals Polymorphism of bovine lipocalin-2 gene and its impact on milk production traits and mastitis in Holstein Friesian cattle

2019 ◽  
Vol 40 ◽  
pp. 17-21 ◽  
Author(s):  
Joanna Pokorska ◽  
Agata Piestrzyńska-Kajtoch ◽  
Dominika Kułaj ◽  
Andrzej Ochrem ◽  
Anna Radko
Keyword(s):  
Milk Production ◽  
Production Traits ◽  
Lipocalin 2 ◽  
Milk Production Traits ◽  
Holstein Friesian ◽  
Friesian Cattle
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