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The Interaction of Strain of Holstein-Friesian Cows and Pasture-Based Feed Systems on Milk Yield, Body Weight, and Body Condition Score
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ABSTRACT
Interactions between genotype and environment are becoming increasingly important as cattle genotypes are being managed in a diverse range of environments worldwide. The objective of this study was to investigate if there is an interaction of strain of HolsteinFriesian cows (HF) by grass-based feed system that affects milk production, body weight, and body condition score. Three strains of HF were compared on 3 pasture-based feed systems over 3 consecutive years. The 3 strains...
Related newspaper, magazine, and journal articles from HighBeam Research
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Associations Between Housing, Management, and Morbidity During Rearing and Subsequent First-Lactation Milk Production of Dairy Cows in Southwest Sweden
Journal of Dairy Science
; ABSTRACT Information regarding health, management, and housing from birth to first calving was collected for 1,029 Swedish Reds, 991 Swedish Holsteins, and 40 heifers of crossbreed or other breeds on bimonthly farm visits made by 3 project veterinarians to 107 dairy herds in southwest Sweden.
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The Effect of Herbage Allowance and Concentrate Supplementation on Milk Production Performance and Dry Matter Intake of Spring-Calving Dairy Cows in Early Lactation
Journal of Dairy Science
; ABSTRACT The objective of this study was to determine the effect of daily herbage allowance (DHA) and concentrate level on milk production and dry matter intake of spring-calving dairy cows in early lactation. Seventy-two Holstein-Friesian dairy cows (mean calving date February 2) were randomly
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Effect of Feeding Level Pre- and Post-Puberty and Body Weight at First Calving on Growth, Milk Production, and Fertility in Grazing Dairy Cows
Journal of Dairy Science
; ABSTRACT The effect of feeding to achieve differential growth rates in Holstein-Friesian (HF; n = 259) and Jersey (n = 430) heifers on time to puberty and first lactation milk production was investigated in a 3 2 factorial design. Holstein-Friesian and Jersey calves were reared to achieve a BW of
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Effect of Stocking Rate on Pasture Production, Milk Production, and Reproduction of Dairy Cows in Pasture-Based Systems
Journal of Dairy Science
; ABSTRACT Ninety-four cows were randomly allocated to 1 of 5 stocking rates (2.2, 2.7, 3.1, 3.7, and 4.3 cows/ha) in a completely randomized design for 3 years. Herds were seasonal calving, with only minor differences in grazing management to optimize the profitability of each stocking rate (SR).
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Effect of genetic merit and concentrate supplementation on grass intake and milk production with Holstein Friesian dairy cows
Journal of Dairy Science
; ABSTRACT A total of 48 high genetic merit (HM) and 48 medium merit (MM) cows, each given a low (LC), medium (MC), or high (HC) level of concentrate supplementation, were used in a split-plot design experiment, which was run in three consecutive years, to evaluate animal production responses.
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Holstein-Friesian Strain and Feed Effects on Milk Production, Body Weight, and Body Condition Score Profiles in Grazing Dairy Cows
Journal of Dairy Science
; ABSTRACT Data from 113 lactations across 76 cows between the years 2002 to 2004 were used to determine the effect of strain of Holstein-Friesian (HF) dairy cow and concentrate supplementation on milk production, body weight (BW), and body condition score (BCS; 1 to 5 scale) lactation profiles. New
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Short Communication: Genetic Selection for Milk Production Increases Plasma Ghrelin in Dairy Cows
Journal of Dairy Science
; ABSTRACT Ghrelin is an endogenous ligand of the growth hormone secretagogue receptor and a potent orexigenic agent in human and rodent studies, but there is limited information about its effect in dairy cows. Twelve low genetic merit and 9 high genetic merit Holstein-Friesian dairy cows in peak
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The Association of Herd Milk Production and Management with a Return-Over-Feed Index in Ontario Dairy Herds
Journal of Dairy Science
; ABSTRACT Associations of herd milk production and management variables to a return-over-feed (ROF) herd profit index were examined among 95 dairy farms. The ROF index is derived from 2 important determinants of profit on dairy farms: milk income and feed cost. All producers were participants in the
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Relationship Between Level of Milk Production and Multiple Ovulations in Lactating Dairy Cows*
Journal of Dairy Science
; ABSTRACT Our objective was to evaluate factors associated with spontaneous multiple ovulations in lactating dairy cows. Ovaries of cows [n = 267; >50 days in milk (DIM)] were evaluated weekly using ultrasound to determine spontaneous (i.e., no hormonal treatment) ovulation rate starting at 50
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Statistical Modeling of Candidate Gene Effects on Milk Production Traits in Dairy Cattle
Journal of Dairy Science
; ... C. Nezer, P. Simon, P. Vanmanshoven, D. Wagenaar, and M. Georges. 1998. A QTL with major effect on milk yield and composition maps to bovine chromosome 14. Mamm. Genome 9:540-544. Feuermann, Y., S. J. Mabjeesh, and A. Shamay. 2004. Leptin affects prolactin ...
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