Match!

Review: extended lactation in dairy cattle

Published on Jul 1, 2019in Animal2.026
· DOI :10.1017/s1751731119000806
Jakob Sehested17
Estimated H-index: 17
,
C. Gaillard7
Estimated H-index: 7
+ 7 AuthorsTorsten Nygaard Kristensen40
Estimated H-index: 40
Abstract
  • References (42)
  • Citations (1)
📖 Papers frequently viewed together
2015
1 Author (Mary Abdelsayed)
78% of Scinapse members use related papers. After signing in, all features are FREE.
References42
Newest
#1A. KokH-Index: 4
#2J.O. Lehmann (AU: Aarhus University)
Last. A.T.M. van KnegselH-Index: 14
view all 7 authors...
The transition period is the most critical period in the lactation cycle of dairy cows. Extended lactations reduce the frequency of transition periods, the number of calves and the related labour for farmers. This study aimed to assess the impact of 2 and 4 months extended lactations on milk yield and net partial cash flow (NPCF) at herd level, and on greenhouse gas (GHG) emissions per unit of fat- and protein-corrected milk (FPCM), using a stochastic simulation model. The model simulated indivi...
Source
#1Jesper Overgård Lehmann (AU: Aarhus University)H-Index: 3
#2Lisbeth Mogensen (AU: Aarhus University)H-Index: 16
Last. Troels Kristensen (AU: Aarhus University)H-Index: 19
view all 3 authors...
Abstract The management concept “extended lactation” whereby farmers deliberately delay time of first insemination allow them to utilise the high milk yield potential of modern dairy cows for longer. The main objective of this study was to quantify the effect of different extended lactation strategies on herd productivity, farm economics and sustainability at product level with focus on greenhouse gas emission. The herd model SimHerd simulated cow state, production, replacement and herd dynamics...
2 CitationsSource
Abstract Many of the climate change mitigation options for dairy systems that aim at optimizing milk production imply a reduced output of meat from these systems. The objective of this study was to evaluate effectiveness of a number of mitigation strategies for dairy systems, taking into account compensation for changes in the amount of beef produced. Four commonly used mitigation strategies for dairy systems were evaluated using an LCA modelling approach: increasing the milk production per cow,...
5 CitationsSource
#1Guilherme de Moura Maciel (AU: Aarhus University)H-Index: 3
#2Lisbeth Mogensen (AU: Aarhus University)H-Index: 16
Last. Nina Aagaard Poulsen (AU: Aarhus University)H-Index: 18
view all 7 authors...
Abstract The effect of extended lactation on milk quality was investigated. Of special focus were changes in composition, cheese making qualities and sensory properties as affected by calving interval (CInt), or gestation stage, expressed as days before calving (DBC). Late lactation milk from cross-breed cows managed for 15 or 18 months CInt was sampled at 180, 90 and 60 DBC, and investigated in relation to overall composition, indicators of udder integrity, sensory quality, cheese making proper...
1 CitationsSource
#1Jesper Overgård Lehmann (AU: Aarhus University)H-Index: 3
#2Lisbeth Mogensen (AU: Aarhus University)H-Index: 16
Last. Torsten Nygaard Kristensen (AU: Aarhus University)H-Index: 40
view all 3 authors...
ABSTRACT Some cows are able to achieve relatively high milk yields during extended lactations beyond 305 d in milk, and farmers may be able to use this potential by selecting the most suitable cows for an extended lactation. However, the decision to postpone insemination has to rely on information available in early lactation. The main objectives of this study were, therefore, to assess the association between the information available in early lactation and the relative milk production of cows ...
5 CitationsSource
#1Guilherme de Moura Maciel (AU: Aarhus University)H-Index: 3
#2Nina Aagaard Poulsen (AU: Aarhus University)H-Index: 18
Last. Lotte Bach Larsen (AU: Aarhus University)H-Index: 30
view all 7 authors...
Abstract Extended calving interval (CInt) for high-yielding dairy cows beyond the traditional 12mo has been suggested as a profitable, environmentally and welfare-friendly production strategy. However, concerns exist on whether extending cow CInt, and consequently prolonging lactation length, impairs milk quality. The aim of this study was to compare the quality of milk produced during the extended lactation period to mid lactation. In particular, milk indicators related to udder integrity and c...
8 CitationsSource
#1C. Gaillard (AU: Aarhus University)H-Index: 7
#2Olivier C. Martin (Université Paris-Saclay)H-Index: 3
Last. H.N. PhuongH-Index: 4
view all 6 authors...
The GARUNS model is a lifetime performance model taking into account the changing physiological priorities of an animal during its life and through repeated reproduction cycles. This dynamic and stochastic model has been previously used to predict the productive and reproductive performance of various genotypes of cows across feeding systems. In the present paper, we used this model to predict the lifetime productive and reproductive performance of Holstein cows for different lactation durations...
8 CitationsSource
#1C. Gaillard (AU: Aarhus University)H-Index: 7
#2H. BarbuH-Index: 1
Last. Mogens Vestergaard (AU: Aarhus University)H-Index: 38
view all 6 authors...
Cows managed for extended lactation go through several estruses before rebreeding. The aims of this study were (1) to quantify the effect of the first 8 estruses after calving on milk yield, milking frequency, and estrous behavioral activity, and (2) to determine the effects of early lactation live weight gain (LWG) as an indication of energy balance on milk yield, plasma insulin-like growth factor 1 (IGF-1) concentration, estrous behavioral activity, interval from calving to first estrus, betwe...
9 CitationsSource
#1C. Gaillard (AU: Aarhus University)H-Index: 7
#2Mogens Vestergaard (AU: Aarhus University)H-Index: 27
Last. Jakob Sehested (AU: Aarhus University)H-Index: 17
view all 4 authors...
In early lactation, most of the dairy cows are in negative energy balance; the extent and duration depend in part on the feeding strategy. Previous studies showed an increased lactation milk yield by use of a live weight (LW) adjusted feeding strategy with a high energy diet before and a reduced energy diet after LW nadir compared with a standard diet throughout lactation. The objective of the present study was to examine how such an individualized feeding strategy affects plasma indicators of e...
5 CitationsSource
#1H.N. Phuong (INRA: Institut national de la recherche agronomique)H-Index: 4
#2Pierre Blavy (INRA: Institut national de la recherche agronomique)H-Index: 4
Last. Nicolas Charles Friggens (INRA: Institut national de la recherche agronomique)H-Index: 12
view all 5 authors...
Reproductive success is a key component of lifetime efficiency - which is the ratio of energy in milk (MJ) to energy intake (MJ) over the lifespan, of cows. At the animal level, breeding and feeding management can substantially impact milk yield, body condition and energy balance of cows, which are known as major contributors to reproductive failure in dairy cattle. This study extended an existing lifetime performance model to incorporate the impacts that performance changes due to changing bree...
8 CitationsSource
Cited By1
Newest
#1Helga Sauerwein (University of Bonn)H-Index: 27
#2Rupert M. Bruckmaier (University of Bern)H-Index: 42
Source