PMID- 20965333
OWN - NLM
STAT- MEDLINE
DCOM- 20110125
LR  - 20181201
IS  - 1525-3198 (Electronic)
IS  - 0022-0302 (Linking)
VI  - 93
IP  - 11
DP  - 2010 Nov
TI  - Effect of milk yield characteristics, breed, and parity on success of the first 
      insemination in Dutch dairy cows.
PG  - 5179-87
LID - 10.3168/jds.2010-3234 [doi]
AB  - The objective of this study was to determine the contribution of cow factors to 
      the probability of a successful first insemination (SFI). The investigation was 
      performed with 51,791 lactations from 1,396 herds obtained from the Dutch dairy 
      cow database of the Cattle Improvement Co-operative (CRV). Cows that had the 
      first insemination (AI) between 40 and 150 d postpartum were selected. The first 
      AI was classified as successful when cows were not reinseminated and either 
      calved between 267 and 295 d later or were culled within 135 to 295 d after first 
      AI. The lactation curve characteristics of individual lactations were estimated 
      by Wilmink's curve using the test-day milk records from CRV. The lactation curve 
      characteristics (peak milk yield, milk yield at the first-AI date, time of peak 
      yield (PT), and milk persistency) were calculated. Breed, parity, interval from 
      calving to first AI (CFI), lactation curve characteristics, milk production 
      traits, moment of AI related to PT (before or after PT), calf status, month of 
      AI, and month of calving were selected as independent variables for a model with 
      SFI as a dependent variable. A multivariable logistic regression model was used 
      with farm as a random effect. Overall SFI was 44%. The effect of parity on SFI 
      depended on CFI. The first-parity cows had the greatest SFI (0.43) compared with 
      other parities (0.32-0.39) at the same period of CFI before 60 d in milk (DIM), 
      and cows in parity >/=5 had the least SFI (0.38-0.40) when AI was after 60 DIM. 
      After 60 DIM, extending CFI did not improve SFI in the first-parity cows, but SFI 
      was improved in multiparous cows. Holstein-Friesian cows had lesser SFI (0.37) 
      compared with cross-breed cows (0.39-0.46). Twin and stillbirth calving reduced 
      SFI (0.39) compared with a single female calf (0.45) or a male calf (0.43) 
      calving. The SFI in different months of AI varied and depended on CFI. Cows that 
      received AI before 60 DIM had a lesser SFI, especially in March, June, and July 
      (0.18, 0.35, and 0.34, respectively). Artificial insemination before PT reduced 
      SFI (0.39) in comparison with AI after PT (0.44). The effect of milk yield at the 
      first-AI date on SFI varied depending on CFI. After 60 DIM at the same period of 
      CFI, a high level of milk yield at the first-AI date reduced SFI. In conclusion, 
      knowledge of the contribution of cow factors on SFI can be applied to support 
      decision making on the moment of insemination of an individual cow in estrus.
CI  - Copyright (c) 2010 American Dairy Science Association. Published by Elsevier Inc. 
      All rights reserved.
FAU - Inchaisri, C
AU  - Inchaisri C
AD  - Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht 
      University, Utrecht, the Netherlands. c.inchaisri@uu.nl
FAU - Hogeveen, H
AU  - Hogeveen H
FAU - Vos, P L A M
AU  - Vos PL
FAU - van der Weijden, G C
AU  - van der Weijden GC
FAU - Jorritsma, R
AU  - Jorritsma R
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Dairy Sci
JT  - Journal of dairy science
JID - 2985126R
SB  - IM
MH  - Animals
MH  - *Breeding
MH  - Cattle/*physiology
MH  - Female
MH  - Fertilization/*physiology
MH  - Insemination, Artificial/veterinary
MH  - Lactation/*physiology
MH  - Milk/metabolism
MH  - Netherlands
MH  - *Parity
MH  - Pregnancy
EDAT- 2010/10/23 06:00
MHDA- 2011/01/28 06:00
CRDT- 2010/10/23 06:00
PHST- 2010/03/05 00:00 [received]
PHST- 2010/08/03 00:00 [accepted]
PHST- 2010/10/23 06:00 [entrez]
PHST- 2010/10/23 06:00 [pubmed]
PHST- 2011/01/28 06:00 [medline]
AID - S0022-0302(10)00559-X [pii]
AID - 10.3168/jds.2010-3234 [doi]
PST - ppublish
SO  - J Dairy Sci. 2010 Nov;93(11):5179-87. doi: 10.3168/jds.2010-3234.