Article
Agriculture, Dairy & Animal Science
Seyed Abu Taleb Sadeghi, Mohammad Rokouei, Hadi Faraji-Arough
Summary: Considering dominance and epistasis effects in the analysis can enhance the accuracy of estimating breeding values for average daily gain traits in Adani goats. Including these effects in evaluation models can improve the precision of genetic parameter estimation and increase the accuracy of breeding value prediction.
SMALL RUMINANT RESEARCH
(2021)
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
Vitoria Mueller, Bruna dos Santos Sune Moraes, Ivan Ricardo Carvalho, Camila Gervini Wendt, Ruth Dunford Patten, Carlos Edurado Wayne Nogueira
Summary: The study aimed to estimate genetic parameters for morphometric measurements in Criollo horses, finding that withers height and thoracic circumference in female and male offspring, respectively, were highly influenced by additive genetic effects. Additionally, it was observed that thoracic circumference and cannon bone circumference had greater additive genetic influence from maternal effects, while withers height had a greater influence from paternal effects.
JOURNAL OF ANIMAL BREEDING AND GENETICS
(2021)
Article
Agriculture, Dairy & Animal Science
Anielly P. Freitas, Maria Lucia P. Lima, Flavia F. Simili, Flavio S. Schenkel, Lenira E. Faro, Mario L. Santana, Claudia Cristina P. Paz
Summary: The study aimed to estimate genetic parameters for animal temperament and growth traits in Nelore cattle and use cluster and principal component analysis to identify individuals with stable temperament and better growth. The results showed a strong positive genetic correlation between temperament indicator traits in Nelore cattle. These findings can be utilized in breeding programs to select Nelore cattle with stable temperament and better growth.
JOURNAL OF ANIMAL SCIENCE
(2023)
Article
Multidisciplinary Sciences
Richard Border, Georgios Athanasiadis, Alfonso Buil, Andrew J. Schork, Na Cai, Alexander I. Young, Thomas Werge, Jonathan Flint, Kenneth S. Kendler, Sriram Sankararaman, Andy W. Dahl, Noah A. Zaitlen
Summary: The study introduces cross-trait assortative mating (xAM) as an alternative explanation for genetic correlations between different human traits, showing that xAM affects various phenotypes and can plausibly account for a substantial portion of genetic correlation estimates. The results suggest that previous reports may have overestimated the true genetic similarity between many phenotypes.
Article
Agriculture, Dairy & Animal Science
Ana Encina, Manuel Ligero, Maria Jose Sanchez-Guerrero, Arancha Rodriguez-sainz de los Terreros, Ester Bartolome, Mercedes Valera
Summary: Hair whorls in horses are a hereditary trait that may be associated with temperament and coat color. Circular whorls are more common than linear whorls, with a concentration on the left-hand side. Hair whorls have medium-high heritability and can be included in a breeding program due to their relationship with behavior.
Article
Genetics & Heredity
Yue Wu, Kathryn S. Burch, Andrea Ganna, Paivi Pajukanta, Bogdan Pasaniuc, Sriram Sankararaman
Summary: Genetic correlation is a crucial parameter for understanding the relationships among complex traits. Existing methods for analyzing individual genotype data are not scalable to large datasets, while methods using summary data have reduced precision. This study introduces SCORE, a scalable and accurate method for estimating genetic correlation using randomized method of moments. SCORE achieves more precise estimates compared to summary-statistic methods, and it can be applied to large datasets in a computationally efficient manner.
AMERICAN JOURNAL OF HUMAN GENETICS
(2022)
Article
Multidisciplinary Sciences
Yuki Matsumoto, Akitsugu Konno, Genki Ishihara, Miho Inoue-Murayama
Summary: This study investigated the genetic characteristics associated with behavioral traits of drug detection dogs by evaluating more than 120,000 genetic variants. It found that behavioral breed differences exist in 'friendliness to humans' and 'tolerance to dogs' among drug detection dogs. The study identified 11 regions potentially associated with drug detection dog characteristics and highlighted the importance of genetic traits in the breeding and training of these dogs.
SCIENTIFIC REPORTS
(2023)
Article
Agriculture, Dairy & Animal Science
Robert M. Hyde, Martin J. Green, Chris Hudson, Peter M. Down
Summary: This study evaluated the effects of calf jackets and 1-kW heat lamps on the growth rates of preweaning calves. The results showed that the use of a 1-kW heat lamp increased the average daily gain (ADG) of calves, while the calf jackets did not have a significant effect on ADG. Additionally, there was a positive association between the mean environmental temperature of the calf building and ADG.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Agronomy
Salej Sood, Vinay Bhardwaj, Vinod Kumar, Roma Das, V. K. Gupta, Vikas Mangal, S. K. Luthra, Raj Kumar, Shambhu Kumar, R. K. Singh, Manoj Kumar, Abhishek Rathore, N. K. Pandey, A. K. Singh
Summary: This study evaluated the yield changes in different potato varieties grown in various locations in India, and found significant progress in potato breeding for yield improvement. However, the genetic gains in potato yield did not meet the future demand for the crop, highlighting the need for holistic modern breeding techniques to enhance genetic gains in potato breeding in India.
EUROPEAN JOURNAL OF AGRONOMY
(2022)
Article
Agriculture, Multidisciplinary
Farshad Fallah, Danial Kahrizi, Abbas Rezaeizad, Alireza Zebarjadi, Leila Zarei, Hulya Dogan
Summary: The present study evaluated genetic variability and estimated genetic parameters of morphological and agro-physiological traits in Camelina sativa using biometrical genetic techniques. Significant differences were observed between genotypes for all traits, and high genetic potential, low environmental effects, and additive gene effects were observed for certain traits. The number of pods per plant, biological yield, shoot weight, and pod straw weight showed the highest positive correlation with kernel yield. The selection of certain traits would simultaneously affect the others in a positive way.
TURKISH JOURNAL OF AGRICULTURE AND FORESTRY
(2023)
Article
Agriculture, Dairy & Animal Science
Shengyang Xu, Chong Jiao, Qiyu Diao, Yan Tu
Summary: This study found that the preweaning period is crucial for rumen bacteria to regulate the average daily gain (ADG) of calves. The relative abundances of propionate producers in the rumen were higher in calves with higher ADG during the preweaning period. This led to increased levels of propionate and serum glucose concentrations in preweaning calves with higher ADG. However, no significant differences were observed in rumen fermentation parameters and serum indices between calves with higher and lower ADG during the post-weaning period.
JOURNAL OF ANIMAL SCIENCE AND BIOTECHNOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
Virginia Mara Pereira Ribeiro, Gabriela Canabrava Gouveia, Mariana Mamedes de Moraes, Andresa Eva Melo de Araujo, Fernanda Santos Silva Raidan, Pablo Augusto de Souza Fonseca, Eduardo Penteado Cardoso, Marcos Vinicius Gualberto Barbosa da Silva, Fabio Luiz Buranelo Toral
Summary: Genetic correlation is crucial for understanding the relationship between economic traits and can improve breeding programs. This study aimed to estimate genetic correlations between growth, reproduction, and parasite burden traits, identifying functional candidate genes underlying these correlations. Through functional analyses, seven FCGs were identified for more than one trait, suggesting potential for genetic improvement in multiple traits.
Article
Agriculture, Dairy & Animal Science
Pablo Dominguez-Castano, Amanda Marchi Maiorano, Jose Eduardo Silva Lopes, Matheus Henrique Vargas de Oliveira, Andre Michel Castilhos, Josineudson Augusto II Vasconcelos Silva
Summary: Evaluating traits for increasing production efficiency is important in beef production systems. The mouth size (MS) score is an easily measurable and implementable trait. Our study found that MS in Nelore cattle is heritable and positively associated with growth traits. Animals with larger mouth size have higher weight at weaning and greater weight gain on pasture. Further research is needed to explore the complexity of MS score and its inclusion in breeding programs.
JOURNAL OF ANIMAL SCIENCE
(2023)
Article
Microbiology
Xuejiao Yin, Chunhui Duan, Shoukun Ji, Peizhi Tian, Sisi Ju, Hui Yan, Yingjie Zhang, Yueqin Liu
Summary: This study investigated whether lambs with high and low average daily gain (ADG) have different rumen and rectum microbial communities. The results showed potential relationships between rumen and rectum microbiota and ADG in weaned lambs. Furthermore, the study identified specific bacterial biomarkers in the rumen and rectum that are associated with ADG using linear discriminant analysis effect size (LEfSe) analysis.
Article
Agriculture, Dairy & Animal Science
S. T. Amorim, N. B. Stafuzza, S. Kluska, E. Peripolli, A. S. C. Pereira, L. F. Muller da Silveira, L. G. de Albuquerque, F. Baldi
Summary: This study identified potential candidate genes associated with lipid profile, meat quality, carcass, and feed efficiency traits in Nellore cattle through analyzing gene-gene interactions in fatty acid profile traits. These genetic interactions provide new insights into the genetic and physiological mechanisms involved in lipid-related traits and could contribute to improving human health by selecting healthier meat products. The study highlights the importance of understanding the complex genetic interactions in natural populations for better breeding and selection strategies.
Article
Multidisciplinary Sciences
Ludmilla C. Brunes, Fernando S. Baldi, Marcos F. Oliveira E. Costa, Graciela Quintans, Georgett Banchero, Raysildo B. Lobo, Claudio U. Magnabosco
Summary: This study evaluated the association between growth, carcass, and visual scores traits with precocious calving in Nellore cattle. The results showed that birth weight and backfat thickness had the highest discrimination value for early heifer pregnancy. Additionally, bone structure, musculature, depth, tail insertion, and rump scores also had high discrimination value for precocious calving.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2022)
Article
Agriculture, Dairy & Animal Science
Fernando Brito Lopes, Fernando Baldi, Ludmilla Costa Brunes, Marcos Fernando Oliveira e Costa, Eduardo da Costa Eifert, Guilherme Jordao Magalhaes Rosa, Raysildo Barbosa Lobo, Claudio Ulhoa Magnabosco
Summary: This study evaluates the advantage of preselecting SNP markers using the Markov blanket algorithm in genomic prediction for carcass and meat quality traits in Nellore cattle. The results show that using the Markov blanket SNP markers can result in lower prediction accuracy compared to using all SNPs, but in certain cases, still achieve high prediction accuracy. The use of Markov blanket-identified SNP markers can improve genomic selection efficiency and management decisions.
JOURNAL OF ANIMAL BREEDING AND GENETICS
(2023)
Article
Biotechnology & Applied Microbiology
Ludmilla Costa Brunes, Carina Ubirajara de Faria, Claudio Ulhoa Magnabosco, Raysildo Barbosa Lobo, Elisa Peripolli, Ignacio Aguilar, Fernando Baldi
Summary: This study aimed to estimate the prediction ability and genetic parameters of RFI in Nellore beef cattle using regression equations for each test and the entire population. The study also evaluated the correlations between RFI and various traits. The results showed that the RFI population had higher additive genetic variance and genetic correlations with growth, reproductive, and carcass traits compared to the RFI from individual tests.
JOURNAL OF APPLIED GENETICS
(2023)
Article
Agriculture, Dairy & Animal Science
Jessica Tatiana Morales-Pineyrua, Aline Cristina Sant'Anna, Georgget Banchero, Juan Pablo Damian
Summary: The adaptation of dairy cows to a new milking system, such as an automatic milking system (AMS), may depend on their temperament. This study investigated the relationships between temperament, behavior, and production parameters during the transition from a conventional milking system (CMS) to an AMS. The results showed that cows classified as calm exhibited more kicking behavior and produced less milk during their first milkings with the AMS compared to cows classified as reactive.
Article
Agriculture, Dairy & Animal Science
Juan Diego Rodriguez, Elisa Peripolli, Marisol Londono-Gil, Rafael Espigolan, Raysildo Barbosa Lobo, Rodrigo Lopez-Correa, Ignacio Aguilar, Fernando Baldi
Summary: This study evaluated the impact of SNP marker density and MAF on genomic predictions and imputation performance for beef cattle using ssGBLUP methodology. The results showed that at least 5% of SNP markers from a high-density array are necessary to obtain reliable genomic predictions and imputed genotypes. The findings suggest that developing low-density customised arrays based on MAF and even distribution of SNPs could be a cost-effective approach for implementing genomic selection in beef cattle.
ANIMAL PRODUCTION SCIENCE
(2023)
Article
Multidisciplinary Sciences
Maria Guilhermina Marcal-Pedroza, Mariana Magalhaes Campos, Marta Fonseca Martins, Marcos Vinicius Barbosa Silva, Mateus Jose Rodrigues Paranhos da Costa, Joao Alberto Negrao, Aline Cristina Sant Anna
Summary: This study aimed to investigate the relationship between temperament traits and milk cortisol and oxytocin concentration, milk yield, milkability, and milk quality in Holstein-Gyr cows. The results showed that cows with calmer temperament during milking management produced milk with higher protein content. Cows with reactive temperament had higher concentrations of cortisol and oxytocin in milk and showed lower milk flow and longer milking time.
Article
Agriculture, Dairy & Animal Science
Leticia Silva Pereira, Ludmilla Costa Brunes, Fernando Baldi, Adriana Santana do Carmo, Byanka Bueno Soares, Valentina Magnabosco, Eduardo da Costa Eifert, Claudio Ulhoa Magnabosco
Summary: The objective of this study was to estimate genetic parameters and correlations for feed efficiency traits in Guzerat cattle using multi-trait analysis. The heritability estimates of the evaluated traits ranged from low to moderate. Residual feed intake (RFI) and dry matter intake (DMI) showed enough genetic variability to be used as selection criteria. Selection for RFI would not compromise productive, reproductive, and carcass performance, contributing to reduce production costs and increase profitability and sustainability in tropical beef cattle production.
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2023)
Article
Agriculture, Dairy & Animal Science
Marisol Londono-Gil, Daniel Cardona-Cifuentes, Rafael Espigolan, Elisa Peripolli, Raysildo B. Lobo, Angelica S. C. Pereira, Ignacio Aguilar, Fernando Baldi
Summary: The aim of this study was to assess the impact of using genomic information in situations of pedigree uncertainty on genetic evaluations for growth and cow productivity traits in Nelore commercial herds. Different approaches were used to estimate genetic values, including with or without genomic information and varying pedigree structures. The results showed that the accuracy of genetic value estimation decreased as the proportion of unknown sires and maternal grandsires increased. The use of genomic information improved the accuracy of prediction for young animals without known pedigrees.
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2023)
Article
Agriculture, Dairy & Animal Science
Rogerio Ribeiro Vicentini, Lenira El Faro, Aska Ujita, Maria Camila Ceballos, Joao Alberto Negrao, Aline Cristina Sant'Anna
Summary: This study investigated the effects of pre-calving positive tactile stimulation training on the post-calving maternal care and protective behavior of primiparous Gyr cows. The results showed that the training group cows had less interaction with their calves and were less protective during calf handling. This suggests that the pre-calving training protocol had a negative impact on maternal care and protective behavior.
Article
Agriculture, Dairy & Animal Science
Gabriela Ramos, Victor Araujo Franzone Vital, Talys Henrique Assumpcao Jardim, Gustavo Nunes, Maria Eduarda Cacador Branco, Cristiano Schetini de Azevedo, Aline Cristina Sant'Anna
Summary: This study investigates the relationship between fear temperament and parrots' response to manual restraint and explores factors influencing these responses. It suggests that physical restraint can be used to assess individual behavioral differences related to fear and responses to stress in parrots. However, temperament evaluations through behavioral tests cannot be dismissed entirely to ensure a comprehensive analysis of temperament.
Article
Agriculture, Dairy & Animal Science
Laura Zuliani, Pedro Henrique Esteves Trindade, Mateus Jose Rodrigues Paranhos da Costa
Summary: This study aimed to identify suitable welfare indicators for ranch horses and mules in Brazil and report their welfare status. Most indicators showed no or little changes from acceptable welfare standards. Forced approach test and integument alterations were directly associated with each other and inversely associated with body condition score, lesions at mouth corners, hoof condition, and orbital tightening. Proper handling routines and training for cowhands can prevent or mitigate these welfare problems. The study is considered a first step towards developing a specific protocol for assessing the welfare of ranch horses and mules.
APPLIED ANIMAL BEHAVIOUR SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
Tarsys Noan Silva Verissimo, Edilson Paes Saraiva, Aline Cristina Sant'Anna, Bruna Agy Loureiro, Pavlos Vinicius do Nascimento, Luiz Arthur dos Anjos Lima, Maria Isabelly Leite Maia, Larissa Kellen da Cunha Morais, Severino Guilherme Caetano Goncalves dos Santos, Eduardo Henrique Santos de Lima, Vinicius de Franca Carvalho Fonseca
Summary: The high radiant heat load of tropical regions poses challenges to the welfare of imported temperate dog breeds. The owners' perception that Siberian Huskies living in Brazil are heat-sensitive dogs likely reflects positive attitudes towards protecting their dogs from heat stress. However, time availability for walks during cooler periods can still be a risk factor in exposing the animals to extreme hot conditions.
Review
Agriculture, Dairy & Animal Science
Maria G. Marcal-Pedroza, Maria Eugenia Andrighetto Canozzi, Mariana M. Campos, Aline C. Sant'Anna
Summary: The temperament of dairy cows affects their milk yield, but there is a lack of consensus in the scientific literature about the direction of this relationship. This study conducted a systematic review and meta-analysis to identify the effects of dairy cows' temperament on milk yield. The results showed that reactive cows were more productive than calm or intermediate ones.
JOURNAL OF ANIMAL SCIENCE
(2023)