Animal and Dietary Factors Affecting Feed Intake During the Prefresh Transition Period in Holsteins
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- 1 December 2002
- journal article
- Published by American Dairy Science Association in Journal of Dairy Science
- Vol. 85 (12), 3430-3443
- https://doi.org/10.3168/jds.s0022-0302(02)74431-7
Abstract
Parity, body condition score (BCS), and dry matter intake (DMI) data of 699 Holsteins fed 49 different diets during the final 3 wk of gestation (prefresh transition period) were compiled from 16 experiments conducted at eight universities. The objectives of this study were to determine the effects of animal and dietary factors on DMI and to elucidate interactions between animal and dietary factors and among dietary factors on DMI during the prefresh transition period. Animal factors examined were parity and BCS, whereas dietary factors examined were rumen undegradable protein (RUP), rumen degradable protein (RDP), neutral detergent fiber (NDF), and ether extract (EE). DMI decreased 32% during the final 3 wk of gestation, and 89% of that decline occurred during the final week of gestation. Day of gestation, animal factors, and dietary factors accounted for 56.1, 19.7, and 24.2% of explained variation in DMI, respectively, and R2 of this linear multivariable model was 0.18. Cows had higher DMI than heifers. DMI decreased linearly as BCS, RUP, and NDF increased, decreased quadratically as EE increased, and increased quadratically as RDP increased. Moreover, the magnitude of DMI depression as animals approached parturition was affected by characteristics of animals and dietary nutrient composition. There were significant parity x EE, BCS x NDF, RUP x NDF, RDP x NDF, NDF x EE, and RUP x EE interactions on DMI. In conclusion, parity, BCS, and concentrations of organic macronutrients in diets affected DMI during the prefresh transition period, and the magnitude of DMI depression as animals approached parturition.Keywords
This publication has 64 references indexed in Scilit:
- Incidence and prevalence of lameness in dairy cattleVeterinary Record, 1996
- Effects of intraruminal infusion of propionate on the concentrations of ammonia and insulin in peripheral blood of cows receiving an intraruminal infusion of ureaJournal of Dairy Research, 1995
- Effect of body condition at calving on tissue mobilization, development of fatty liver and blood chemistry of dairy cowsAnimal Science, 1986
- Effect of body condition at calving on the health and performance of dairy cowsAnimal Science, 1986
- Effects of physiological state and body fatness on digestive-tract weight and composition in the dairy cowLivestock Production Science, 1985
- INTAKE, DIGESTA FILL AND FLOW KINETICS PRE- AND POSTPARTUMCanadian Journal of Animal Science, 1984
- The effect of body condition of dairy cows at calving on their food intake and performance when given complete dietsAnimal Science, 1982
- The use of condition-scoring in dairy cows and its relationship with milk yield and live weightAnimal Science, 1978
- The interaction between dietary lipids and fibre in the sheep 2. Digestibility studiesAnimal Science, 1974
- Calculation of Orthogonal Coefficients When Treatments Are Unequally Replicated and or Unequally Spaced1Agronomy Journal, 1963