Article
Agriculture, Dairy & Animal Science
V. A. E. Becker, E. Stamer, H. Spiekers, G. Thaller
Summary: This study examined the genetic relationships between feed efficiency-related traits and disease susceptibility during lactation in dairy cows. The results showed that selecting for lower dry matter intake or residual energy intake may increase the risk of diseases, especially in the early lactation period.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
Getinet Mekuriaw Tarekegn, Johanna Karlsson, Cecilia Kronqvist, Britt Berglund, Kjell Holtenius, Erling Strandberg
Summary: The study found that HOL cows generally have higher heritability for DMI and DMIFor compared to SR cows, but the situation reverses in first parity. Heritability for DMI and DMIFor during the first parity averaged 0.11 and 0.15, while for ECMFor and ECM, the corresponding values were 0.21 and 0.29.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
C. R. Seely, B. M. Leno, A. L. Kerwin, T. R. Overton, J. A. A. McArt
Summary: Subclinical hypocalcemia (SCH) affects many high-producing dairy cows in the postpartum period, with cows experiencing prolonged or delayed SCH being at increased risk for disease and producing less milk. Cows with transient SCH show higher milk yield in the early lactation period, while cows with low blood calcium and magnesium concentrations may be more affected by SCH.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
Mahmoud H. Emam, Elise Shepley, Mourad M. Mahmoud, Megan Ruch, Sobhy Elmaghawry, Wafaa Abdelrazik, Ahmed M. Abdelaal, Brian A. Crooker, Luciano S. Caixeta
Summary: There is a growing interest in using behavioral indicators to identify and predict health disorders in dairy cattle, which can improve management and treatment strategies. Changes in prepartum behaviors such as total daily rumination (TDR), total daily activity (TDA), and dry matter intake (DMI) have been suggested as predictors for subclinical hypocalcemia (SCH) and hypomagnesemia (HYM) postpartum. However, our results indicate that these changes are not effective estimators of SCH and HYM status postpartum.
Article
Agriculture, Dairy & Animal Science
Somony Mam, Bengthay Tep, Soriya Rin, Yoshihisa Uenoyama, Shuichi Matsuyama, Satoshi Ohkura, Tetsuma Murase, Mitsuo Nunome, Yasuhiro Morita
Summary: The Cambodian dairy sector collapsed due to civil war, lacking basic information. This study revealed genetic variation and milk production in Cambodian crossbred dairy cattle, finding higher milk fat content in Farm R due to unique genetic characteristics.
Article
Agriculture, Dairy & Animal Science
V. A. E. Becker, E. Stamer, G. Thaller
Summary: Efficiency of dairy cows is largely influenced by dry matter intake (DMI). Decreasing DMI may increase efficiency, but can also lead to negative energy balance and health issues, especially in early lactation. Multiparous cows are more likely to be susceptible to diseases compared to primiparous cows, with higher incidences of claw and leg diseases, followed by metabolic diseases and mastitis.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
Shulin Liang, Chaoqun Wu, Wenchao Peng, Jian-Xin Liu, Hui-Zeng Sun
Summary: This study developed a simple and accurate model to predict daily dry matter intake of dairy cows in mid and late lactation based on the feed intake of first 2 hours after feeding (DMI-2h). The model showed higher accuracy in predicting feed intake and could be used as an alternative approach for researchers facing difficulties in measuring feed intake.
Article
Agriculture, Dairy & Animal Science
M. Civiero, R. Delagarde, A. Berndt, Jusiane Rosseto, M. N. de Souza, L. H. Schaitz, H. M. N. Ribeiro-Filho
Summary: The inclusion of pearl millet herbage as a supplement for dairy cows can slightly decrease total dry matter intake and milk production without affecting methane intensity.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
Mahsa Zare, Hadi Atashi, Miel Hostens
Summary: Genomic loci associated with lactation performance during 9 to 50 days in milk in Holstein dairy cows were detected in this study. Candidate genes identified for milk production traits showed contrasting results between the early and peak stages of lactation, indicating differential genetic effects during lactation.
Article
Agriculture, Dairy & Animal Science
Antonello Ledda, Silvia Carta, Fabio Correddu, Alberto Cesarani, Alberto Stanislao Atzori, Gianni Battacone, Nicolo Pietro Paolo Macciotta
Summary: Measuring individual intake on livestock farms is difficult but important for evaluating feed efficiency. This study aimed to predict the intake of lactating Sarda ewes from milk spectra using multivariate approaches. Individual intake was moderately correlated with the wavenumbers of the milk spectra. The preliminary results showed that individual intake and feeding efficiency can be routinely estimated from milk spectra.
Article
Agriculture, Dairy & Animal Science
B. McClearn, L. Delaby, T. J. Gilliland, C. Guy, M. Dineen, F. Coughlan, N. Galvin, B. McCarthy
Summary: This study found that the ploidy of perennial ryegrass did not affect dry matter intake, but grazing on PRG-white clover swards significantly increased dry matter intake, leading to higher milk and milk solids yields. Cows grazing on PRG-white clover swards were also more efficient in terms of milk production efficiency compared to cows grazing on PRG-only swards.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
Matthew Barden, Bingjie Li, Bethany E. Griffiths, Alkiviadis Anagnostopoulos, Cherry Bedford, Androniki Psifidi, Georgios Banos, Georgios Oikonomou
Summary: The study aimed to estimate the genetic parameters of digital cushion thickness (DCT), assess the genetic correlation between DCT and claw horn lesions (CHL), and identify candidate genes associated with DCT. The results showed moderate heritability of DCT and a negative genetic correlation between DCT and sole lesions at different stages of production. Additionally, genes related to inflammation, fat metabolism, and bone development were found to be associated with DCT.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Neurosciences
Bang-Sheng Wu, Yi-Jun Ge, Wei Zhang, Shi-Dong Chen, Shi-Tong Xiang, Ya-Ru Zhang, Ya-Nan Ou, Yu-Chao Jiang, Lan Tan, Wei Cheng, John Suckling, Jian-Feng Feng, Jin-Tai Yu, Ying Mao
Summary: In this study, a genome-wide association analysis of cerebellar white matter microstructure was conducted using diffusion tensor imaging data from 25,415 individuals from UK Biobank. The study identified 11 genetic loci and 86 genes associated with cerebellar white matter microstructure. Functional enrichment analysis revealed the involvement of GABAergic neurons and cholinergic pathways. The study also found significant genetic overlap between cerebellar white matter tracts and adjacent brain regions, as well as genetic correlations with movement, cognitive, psychiatric, and cerebrovascular traits. Overall, this study provides important insights into the genetics of cerebellar white matter microstructure and its shared genetic etiology with common brain disorders.
Article
Agriculture, Dairy & Animal Science
Rui Shi, Wenqi Lou, Bart Ducro, Aart van der Linden, Han A. Mulder, Simon J. Oosting, Shengli Li, Yachun Wang
Summary: This study aimed to develop and validate the best prediction model of nitrogen use efficiency (NUE), nitrogen loss (NL), and dry matter intake (DMI) for individual dairy cows in China. The results showed that individual NUE can be predicted with moderate accuracy in both within-herd and external validations, while NL and DMI had lower accuracies. Additionally, the study found that information from MIR spectra variables increased the predictive ability of the models.
JOURNAL OF ANIMAL SCIENCE AND BIOTECHNOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
B. Krattley-Roodenburg, L. J. Huybens, M. Nielen, T. van Werven
Summary: The study aimed to investigate the effects of different management practices on udder health during the dry period, and found that factors such as reducing milk yield before dry-off, correct use of antimicrobials, and adherence to guidelines can help reduce the risk of new high SCC. The research also showed that farmers can balance limited use of antimicrobials at dry-off with management measures to maintain good udder health during the dry period.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Fisheries
Vincent Lugert, Jens Tetens, Georg Thaller, Carsten Schulz, Joachim Krieter
AQUACULTURE RESEARCH
(2017)
Article
Agriculture, Dairy & Animal Science
P. Stratz, M. Schmid, R. Wellmann, S. Preuss, I. Blaj, J. Tetens, G. Thaller, J. Bennewitz
Article
Agriculture, Dairy & Animal Science
Kristina Schlicht, Nina Krattenmacher, Vincent Lugert, Carsten Schulz, Georg Thaller, Jens Tetens
JOURNAL OF ANIMAL BREEDING AND GENETICS
(2018)
Article
Multidisciplinary Sciences
Iulia Blaj, Jens Tetens, Siegfried Preuss, Joern Bennewitz, Georg Thaller
Article
Agriculture, Dairy & Animal Science
V. Jagannathan, V. Gerber, S. Rieder, J. Tetens, G. Thaller, C. Droegemueller, T. Leeb
Article
Agriculture, Dairy & Animal Science
Shahrbanou Hosseini, Bertram Brenig, Jens Tetens, Ahmad Reza Sharifi
REPRODUCTION IN DOMESTIC ANIMALS
(2019)
Review
Agriculture, Dairy & Animal Science
Esther D. Ellen, Malou van der Sluis, Janice Siegford, Oleksiy Guzhva, Michael J. Toscano, Joern Bennewitz, Lisette E. van der Zande, Jerine A. J. van der Eijk, Elske N. de Haas, Tomas Norton, Deborah Piette, Jens Tetens, Britt de Klerk, Bram Visser, T. Bas Rodenburg
Article
Agriculture, Dairy & Animal Science
Isabel Kilic, Manuel Stehr, Mark Hennies, Cornelia C. Metges, Soeren Franzenburg, Clemens Falker-Gieske, Jens Tetens, Guerbuez Das
Summary: This study investigated the transcriptomic profiles of chickens exposed to Ascaridia galli and Heterakis gallinarum infections, revealing that LB chickens exhibited a higher stress response to external stimuli, while LD chickens showed higher tolerance to infections. This suggests that genetic factors play a role in the resistance of laying hens to nematode infections.
Article
Biology
Daniel Borda-Molina, Hanna Iffland, Markus Schmid, Regina Mueller, Svenja Schad, Jana Seifert, Jens Tetens, Werner Bessei, Joern Bennewitz, Amelia Camarinha-Silva
Summary: This study found significant differences in the microbial communities between laying hen lines selected for high and low feather pecking behavior, but the microbial composition did not affect feather pecking behavior or agonistic behavior.
Article
Genetics & Heredity
Anke Boegeholz, Clemens Falker-Gieske, Monika Guelat, Corinne Gurtner, Sibylle Hunziker, Anna Oevermann, Georg Thaller, Cord Drogemuller, Jens Tetens
Summary: The study characterized the phenotype of BCSE in Holstein cattle from Germany and Switzerland, identified degeneration and cellular infiltration in eye muscles, and revealed multiple genome regions associated with the disease, challenging a monogenic mode of inheritance and indicating genetic heterogeneity causing BCSE in cattle.
Article
Agronomy
Stephan Rosengart, Bussarakam Chuppava, Dana Carina Schubert, Lea-Sophie Trost, Hubert Henne, Jens Tetens, Imke Traulsen, Ansgar Deermann, Christian Visscher, Michael Wendt
Summary: Monitoring sow health is crucial for preventing diseases and ensuring optimal conditions for piglet rearing. This study investigated the relationship between sow health post-partum and thermographic images of mammary glands. Diseased sows had lower piglet numbers and weight gain, as well as higher temperatures in mammary glands compared to healthy sows.
Article
Veterinary Sciences
Isabel Wiedemann, Tony Krebs, Niklas Momberg, Christoph Knorr, Jens Tetens
VETERINARY MEDICINE AND SCIENCE
(2018)
Article
Agriculture, Dairy & Animal Science
A. Niggeler, J. Tetens, A. Stauble, A. Steiner, C. Droegemueller
Review
Agriculture, Dairy & Animal Science
Lisa-Marie Sandberg, Nina Krattenmacher, J. Tetens, G. Thaller
Review
Agriculture, Dairy & Animal Science
Kathrin Elbert, J. Tetens, R. Wassmuth