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Animal Science Database

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Abstract

The aim of this study was to determine how polyunsaturated fatty acids (PUFA) supplementation can affect the productive and reproductive performance in dairy cows subjected to a fixed-time artificial insemination (TAI) protocol under farm conditions. One hundred and ninety-eight Holstein...

Author(s)
Castro, T.; Martinez, D.; Isabel, B.; Cabezas, A.; Jimeno, V.
Publisher
MDPI AG, Basel, Switzerland
Citation
Animals, 2019, 9, 5, pp 205
Abstract

The objective was to determine the efficiency of insemination with sexed semen at spontaneous estrus and synchronisation of ovulation, and the effects of days in milk, insemination number, parity, and daily milk yield on pregnancy rates in lactating Holstein cows. A total 1,000 first to fourth...

Author(s)
Kurykin, J.; Jalakas, M.; Kaart, T.; Jaakma, Ü.
Publisher
Lietuvos Veterinarijos Akademija, Kaunas, Lithuania
Citation
Veterinarija ir Zootechnika, 2017, No.75, pp 30-35
AbstractFull Text

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 ...

Author(s)
Argiris, A.; Santoso, S. I.; Ondho, Y. S.; Kurnianto, E.
Publisher
Faculty of Animal Agriculture, Diponegoro University and Indonesian Society of Animal Agriculture, Semarang, Indonesia
Citation
Journal of the Indonesian Tropical Animal Agriculture, 2019, 44, 1, pp 47-55
Abstract

The objective of this study was to evaluate the economic performance of dairy cows managed with a voluntary waiting period (VWP) of 60 or 88 d. A secondary objective was estimating variation in cash flow under different input pricing scenarios through stochastic Monte Carlo simulations. Lactating...

Author(s)
Stangaferro, M. L.; Wijma, R.; Masello, M.; Thomas, M. J.; Giordano, J. O.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 8, pp 7500-7516
Abstract

The objective was to compare luteal area (LA), luteal blood flow (LBF), and progesterone (P4) concentration before and after artificial insemination (AI) in pregnant and open cows in the diestrus preceding insemination and during the first 21 d after insemination. A number of 119 multiparous German ...

Author(s)
Berger, H.; Lietzau, M.; Tichy, A.; Herzog, K.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 104, pp 115-119
AbstractFull Text

Our objective in this study the effect of parity and average milk production on the conception rate after resynchronization with G6 G protocol or Ovsynch protocol. Lactating Holstein cows (n=100) divided into two groups (Ovsynch and G6 G) cows in this group1 (n=50) were received the following...

Author(s)
El-Razek, E. M. A.; Genedy, T. M.; Zaghloul, A. H.
Publisher
Faculty of Veterinary Medicine, Alexandria University, Behira, Egypt
Citation
Alexandria Journal of Veterinary Sciences, 2018, 57, 1, pp 46-51
Abstract

The productive and reproductive characteristics of Brown Swiss (B) cross-bred cows were investigated by comparing with those of Holstein (H) cows housed in the same barn. Additionally, their hair cortisol levels were analyzed to evaluate the extent of stress experienced during dry and lactation...

Author(s)
Endo, N.; Kuroki, R.; Tanaka, T.
Publisher
Wiley, Tokyo, Japan
Citation
Animal Science Journal, 2017, 88, 10, pp 1506-1512
Abstract

This experiment evaluated the reproductive performance, herd exit dynamics, and lactation performance of dairy cows managed with a voluntary waiting period (VWP) of 60 or 88 d. Secondary objectives were evaluating VWP effect on cyclicity status, uterine health, systemic inflammation, and body...

Author(s)
Stangaferro, M. L.; Wijma, R.; Masello, M.; Thomas, M. J.; Giordano, J. O.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 1, pp 717-735
Abstract

Pregnancy-associated glycoproteins (PAG) are produced by the ruminant placenta and secreted into the maternal circulation throughout pregnancy. The extent to which circulating PAG concentrations predict pregnancy outcomes was examined herein. Also, associations between circulating PAG...

Author(s)
Mercadante, P. M.; Ribeiro, E. S.; Risco, C.; Ealy, A. D.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 4, pp 3031-3040
Abstract

The objectives of this experiment were to determine the effects of oral Ca supplementation on milk yield, body condition, pregnancy per artificial insemination (P/AI), and days to pregnancy in Holstein cows considered to be of low (LRM; no calving assistance, live singleton without retained...

Author(s)
Martinez, N.; Sinedino, L. D. P.; Bisinotto, R. S.; Daetz, R.; Risco, C. A.; Galvão, K. N.; Thatcher, W. W.; Santos, J. E. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 10, pp 8417-8430

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