Article
Agriculture, Dairy & Animal Science
Hadi Esfandyari, Just Jensen
Summary: The study aimed to develop a procedure for simultaneous analysis of basic records and derive linear traits related to feed efficiency without approximation. A bivariate longitudinal random regression model was used to analyze individual longitudinal records of weight and feed intake from a large group of beef bulls, estimating genetic and permanent environmental covariance functions.
JOURNAL OF ANIMAL SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
L. C. Novo, A. Gondo, R. C. Gomes, J. A. Fernandes Junior, M. N. Ribas, L. F. Brito, M. M. M. Laureano, C. Araujo, G. R. O. Menezes
Summary: This study estimated genetic parameters for feed efficiency and carcass traits in Senepol cattle, showing that feed efficiency indicators derived from residual variables can be improved through genetic selection, while variables calculated as ratios are more influenced by environmental factors and less suitable for breeding programs. Selection for feed efficiency has the greatest impact on growth rate, rib-eye area, and backfat thickness, and may result in different effects on growth and carcass traits in Senepol heifers.
Article
Agriculture, Dairy & Animal Science
Laura Vargovic, Susanne Hermesch, Rebecca Z. Athorn, Kim L. Bunter
Summary: Electronic sow feeding (ESF) systems are used to monitor feed intake and behavior in group-housed sows, with the study finding moderate to high heritability and repeatability for time-related traits, indicating genetic variation among individuals in their feeding behaviors. Individual phenotypes derived from ESF data could be valuable for genetic evaluations, but differences in the capabilities of ESF systems hindered comparison between farms.
JOURNAL OF ANIMAL SCIENCE
(2021)
Article
Genetics & Heredity
Patricia L. Johnson, Sharon Hickey, Kevin Knowler, Janine Wing, Brooke Bryson, Melanie Hall, Arjan Jonker, Peter H. Janssen, Ken G. Dodds, John C. McEwan, Suzanne J. Rowe
Summary: The study on New Zealand maternal sheep revealed a complex relationship between feed efficiency and methane emissions, with different genetic correlations that need to be taken into account in genetic improvement programs.
FRONTIERS IN GENETICS
(2022)
Article
Multidisciplinary Sciences
Urszula Miksza, Edyta Adamska-Patruno, Witold Bauer, Joanna Fiedorczuk, Przemyslaw Czajkowski, Monika Moroz, Krzysztof Drygalski, Andrzej Ustymowicz, Elwira Tomkiewicz, Maria Gorska, Adam Kretowski
Summary: This study aimed to evaluate the possible differences in obesity-related and glucose metabolism parameters between different genotypes of the brain-derived neurotrophic factor (BDNF) gene, based on daily energy and macronutrient intake. Anthropometric measurements, body composition analysis, and dietary intake assessments were conducted on 484 adult participants. The results showed that individuals with the GG genotype had lower skeletal muscle mass and fat-free mass (FFM) under high carbohydrate intake (>48%), but higher FFM, total cholesterol, and LDL-C concentrations under high fiber intake (>18 g). Moreover, carriers of the GG genotype exhibited higher waist circumference, BMI, fasting glucose and insulin concentrations with high protein intake (>18% of total daily energy), and higher visceral adipose tissue (VAT) content and HDL-C concentrations with high dietary fat intake (>30% of energy). These findings suggest that glucose homeostasis and obesity-related parameters may vary among carriers of common BDNF gene variants, particularly the GG (rs10835211) genotype, depending on daily energy, macronutrient, and fiber intake.
SCIENTIFIC REPORTS
(2023)
Article
Agriculture, Dairy & Animal Science
Luke M. Kramer, Anna Wolc, Hadi Esfandyari, Dinesh M. Thekkoot, Chunyan Zhang, Robert A. Kemp, Graham Plastow, Jack C. M. Dekkers
Summary: This study aimed to estimate genetic parameters for maternal reproductive traits between two purebred maternal nucleus populations (Landrace and Yorkshire) and their crossbred offspring. Single-step GBLUP analysis was conducted by considering different combinations of purebred and crossbred populations, indicating potential for improving selection of purebred animals for crossbred performance.
JOURNAL OF ANIMAL SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
Igor Machado Ferreira, Karla Alves Oliveira, Iorrano Andrade Cidrini, Mateus Jose Inacio de Abreu, Luciana Melo Sousa, Luis Henrique Cursino Batista, Bruno Grossi Costa Homem, Laura Franco Prados, Gustavo Rezende Siqueira, Flavio Dutra de Resende
Summary: Brazilian feedlot operators often make subjective decisions on the length of stay for animals based on visual evaluation. The lack of a metric to determine the ideal slaughter endpoint leads to erroneous decision-making. This study aimed to evaluate the effect of days on feed (DOF) on the performance and carcass characteristics of Nellore heifers.
Review
Genetics & Heredity
Pourya Davoudi, Duy Ngoc Do, Stefanie M. Colombo, Bruce Rathgeber, Younes Miar
Summary: This review comprehensively discusses the topics related to feed efficiency (FE) in pigs, including measurements, genetics, genomics, biological pathways, and advanced technologies for improvement. A deeper understanding of the biology underlying FE is crucial for genetic improvement of FE traits.
FRONTIERS IN GENETICS
(2022)
Article
Multidisciplinary Sciences
Breno de Castro Silva, Marcos Vinicius Carneiro Pacheco, Leticia Artuzo Godoi, Gilyard Angelo Pinheiro de Souza, Nathalia Veloso Tropia, Pauliane Pucetti, Flavia Adriane de Sales Silva, Ana Clara Baiao Menezes, Luciana Navajas Renno, Mario Fonseca Paulino, Jon Patrick Schoonmaker, Sebastiao de Campos Valadares Filho
Summary: The experiment evaluated the effects of different feed additives on feed intake, nutrient digestibility, and rumen parameters in feedlot bulls. The diet containing bicarbonate and magnesium oxide significantly increased intake of certain nutrients compared to other diets, while the diet including exogenous alpha-amylase showed potential for improving rumen starch digestibility. However, overall, the feed additives did not have significant effects on other rumen parameters or total tract digestibility of starch.
Article
Agriculture, Dairy & Animal Science
Ting Wang, Jianxin Jiao, Hucheng Wang, A. Allan Degen, Nana Gou, Shanshan Li, Yanfu Bai, Zhanhuan Shang
Summary: This study demonstrated that supplementing sweet sorghum with grapeseeds in the diet of lambs can increase the total volatile fatty acid content and alter the relative abundances of ruminal bacteria.
ANIMAL FEED SCIENCE AND TECHNOLOGY
(2021)
Article
Agriculture, Dairy & Animal Science
Manoj Kumar Singh, Mahesh Shivanand Dige, R. Pourouchottamane, Akhilesh Kumar, Gopal Ramdasji Gowane
Summary: Genetic parameters for feed efficiency traits in Barbari goats were estimated, showing moderate heritability estimates and significant contribution of maternal genetic effects to phenotypic variance. Direct heritability estimates were influenced by high and negative covariance between direct animal and maternal genetic effects. Maternal permanent environment exhibited high genetic correlations.
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2022)
Article
Fisheries
Bruno Olivetti de Mattos, Elcimar da Silva Sousa, William Alemao Saboia, Thiago Macedo Santana, Maria Angelica de Almeida Correa, Francisco Javier Sanchez-Vazquez, Rodrigo Fortes-Silva
Summary: This study evaluated the effects of different feeding strategies on the growth, body composition, hematological and biochemical parameters, excretion patterns, and economic indices of juvenile tambaqui. The results showed that the self-feeder system and apparent satiety feeding strategy had positive effects on feed intake, conversion ratio, protein efficiency ratio, and protein retention rate. However, there were no significant differences observed in growth, survival, hematological parameters, body composition, and total ammonia nitrogen excretion among the different feeding strategies. The study also found that the self-feeder system and apparent satiety feeding strategy had better economic indices.
AQUACULTURE RESEARCH
(2022)
Article
Fisheries
Wenchao Yu, Junyu Liu, Feng Yu, Yawei Shen, Shihai Gong, Yisha Lu, Wenzhu Peng, Yi Wang, Yang Gan, Qizhen Xiao, Xuan Luo, Weiwei You, Caihuan Ke
Summary: This study measured the growth and feed efficiency traits of Pacific abalone and established an individual-based accurate measurement method. The results showed that residual feed intake (RFI) can be used as a suitable trait for indicating the feed efficiency of abalone, and it is genetically correlated with other traits.
Article
Agriculture, Dairy & Animal Science
Ha-Seung Seong, Young-Sin Kim, Soo-Jin Sa, Yongdae Jeong, Joon-Ki Hong, Eun-Seok Cho
Summary: This study investigated the genetic characteristics and relationships of the direct genetic effect (DGE) and social genetic effect (SGE) on average daily gain (ADG) in purebred and crossbred pigs. The results showed that both DGE and SGE contributed to ADG in both populations, and there was a high correlation between the SGE of purebred pigs and DGE of crossbred pigs. Several genomic regions associated with DGE and SGE on ADG were also identified. These findings will be useful for future genomic evaluation studies of socially affected traits.
Article
Agriculture, Dairy & Animal Science
Amir Aliakbari, Olivier Zemb, Yvon Billon, Celine Barilly, Ingrid Ahn, Juliette Riquet, Helene Gilbert
Summary: This study found genetic variations in the gut microbial community are associated with feed efficiency and production traits in pigs, suggesting potential for selection for feed efficiency using gut microbiome composition.
JOURNAL OF ANIMAL BREEDING AND GENETICS
(2021)
Article
Agriculture, Dairy & Animal Science
C. Y. Chen, I. Misztal, S. Tsuruta, W. O. Herring, J. Holl, M. Culbertson
JOURNAL OF ANIMAL BREEDING AND GENETICS
(2010)
Article
Agriculture, Dairy & Animal Science
B. Zumbach, I. Misztal, C. Y. Chen, S. Tsuruta, M. Lukaszewicz, W. O. Herring, M. Culbertson
JOURNAL OF ANIMAL BREEDING AND GENETICS
(2010)
Article
Agriculture, Dairy & Animal Science
C. Y. Chen, S. D. Kachman, R. K. Johnson, S. Newman, L. D. Van Vleck
JOURNAL OF ANIMAL SCIENCE
(2008)
Article
Agriculture, Dairy & Animal Science
C. Y. Chen, R. K. Johnson, S. Newman, S. D. Kachman, L. D. Van Vleck
JOURNAL OF ANIMAL SCIENCE
(2009)
Article
Agriculture, Dairy & Animal Science
C. Y. Chen, I. Misztal, S. Tsuruta, W. O. Herring, J. Holl, M. Culbertson
JOURNAL OF ANIMAL SCIENCE
(2010)
Article
Agriculture, Dairy & Animal Science
C. Y. Chen, I. Misztal, I. Aguilar, A. Legarra, W. M. Muir
JOURNAL OF ANIMAL SCIENCE
(2011)
Article
Agriculture, Dairy & Animal Science
C. Y. Chen, I. Misztal, I. Aguilar, S. Tsuruta, T. H. E. Meuwissen, S. E. Aggrey, T. Wing, W. M. Muir
JOURNAL OF ANIMAL SCIENCE
(2011)
Article
Agriculture, Dairy & Animal Science
Ivan Pocrnic, Daniela A. L. Lourenco, Ching-Yi Chen, William O. Herring, Ignacy Misztal
JOURNAL OF ANIMAL SCIENCE
(2019)
Article
Agriculture, Dairy & Animal Science
Amanda M. Maiorano, Alula Assen, Piter Bijma, Ching-Yi Chen, Josineudson Augusto Vasconcelos Silva, William O. Herring, Shogo Tsuruta, Ignacy Misztal, Daniela A. L. Lourenco
JOURNAL OF ANIMAL SCIENCE
(2019)
Article
Agriculture, Dairy & Animal Science
Yvette Steyn, Daniela A. Lourenco, Ching-Yi Chen, Bruno D. Valente, Justin Holl, William O. Herring, Ignacy Misztal
Summary: This study aimed to investigate the impact of different contemporary group (CG) definitions on genetic parameters and estimated breeding value (EBV) prediction accuracy for crossbred traits in the pig industry. The results suggest that different CG definitions may affect evaluation stability and animal ranking, with different CG scenarios showing no relevant impact on backfat EBV. This study highlights the importance of considering slaughter dates in CG for estimating crossbred trait EBV for purebred animals.
JOURNAL OF ANIMAL SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
Natalia Galoro Leite, Ching-Yi Chen, William O. Herring, Justin Holl, Shogo Tsuruta, Daniela Lourenco
Summary: This study aimed to investigate the impact of using imputed CB genotypes on the predictability and bias of purebred sires' genomic breeding values for CB performance. Results showed that incorporating CB genotypes imputed from a low-density panel did not improve predictability or reduce bias, suggesting limited benefit for using these genotypes to offset CB phenotyping.
JOURNAL OF ANIMAL SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
Roger Ros-Freixedes, Andrew Whalen, Ching-Yi Chen, Gregor Gorjanc, William O. Herring, Alan J. Mileham, John M. Hickey
GENETICS SELECTION EVOLUTION
(2020)