Article
Agriculture, Dairy & Animal Science
Funda Erdogan Atac, Cigdem Takma, Yakut Gevrekci, Seniz Ozis Altincekic, Tugay Ayasan
Summary: Performing early selection of breeding goats, considering genetic and environmental factors, can lead to rapid genetic progress and increased profitability in goat breeding. Additionally, accounting for genetic and maternal influences on growth traits is important in identifying individual variations.
Article
Agriculture, Dairy & Animal Science
Ismail Boujenane
Summary: The von Bertalanffy function was found to be the best fit for describing the growth curve of Timahdite lambs, with estimated parameters A, B and k of 33.3, 0.50, and 0.01 respectively. Genetic and non-genetic effects were significant on these parameters, with heritability estimates of 0.01, 0.02, and 0.02 for A, B, and k, respectively. Genetic correlations between A-B, A-k, and B-k were 0.79, -0.71, and -0.23, with corresponding phenotypic correlations of 0.77, -0.81, and -0.54.
SMALL RUMINANT RESEARCH
(2022)
Article
Agriculture, Dairy & Animal Science
N. Fetherstone, F. M. McGovern, T. M. Boland, N. McHugh
Summary: This study investigated the effects of ewe maternal genetic merit and country of origin on lamb growth and performance pre- and post-weaning. The results showed that lambs from New Zealand had higher weights, average daily gains, and muscle depths compared to Irish lambs. The maternal genetic merit also influenced lamb performance.
SMALL RUMINANT RESEARCH
(2022)
Article
Agriculture, Dairy & Animal Science
Emilie Cobo, Jerome Raoul, Loys Bodin
Summary: The weight of lambs produced per ewe is a crucial trait for French meat sheep farmers and genetic improvement is based on a global index combining breeding values for maternal traits. This study compared the official genetic evaluation approach with a direct genetic evaluation of a proxy trait representing the farmer's objective. Results showed that selecting based on litter weight can simultaneously improve litter size, indicating positive correlated response between the two traits.
Article
Agriculture, Dairy & Animal Science
Franziska Weik, Rebecca E. Hickson, Stephen T. Morris, Dorian J. Garrick, Jason A. Archer
Summary: This research found that there is almost no genetic variation for pregnancy outcomes in 15-month-old heifers and mature cows in New Zealand farming conditions, but there is potential for improvement in reproductive performance in 2-year-old cows through genetic selection. Cows with higher genetic potential for rebreeding ability as young cows may have greater genetic merit for certain traits, but are not likely to become larger cows at maturity. Maternal genetic effects on weaning weight were negatively correlated with body condition score in lactating cows, but positively correlated with rebreeding performance.
Article
Microbiology
Claudia Romeo, Giovanni Parisio, Federico Scali, Matteo Tonni, Giovanni Santucci, Antonio M. Maisano, Ilaria Barbieri, M. Beatrice Boniotti, Tomasz Stadejek, G. Loris Alborali
Summary: PRRS is a major disease in pigs worldwide, causing significant economic losses. The high mutation rate and low cross-protection between strains make it difficult to control. This study in Italian pig nurseries demonstrates that strict biosecurity measures are crucial in limiting the spread of PRRSV and minimizing losses.
VETERINARY MICROBIOLOGY
(2023)
Article
Veterinary Sciences
Ruijun Wang, Yan Liu, Yue Shi, Yunpeng Qi, Yanbo Li, Zhiying Wang, Yanjun Zhang, Yanhong Zhao, Rui Su, Jinquan Li
Summary: Inner Mongolia Albas white cashmere goats are a dual-purpose breed for cashmere and meat production. This study aims to investigate the genetic and non-genetic factors influencing early growth traits and estimate variance components of pre-weaning growth traits. Data from 37487 kidding records of 343 sires and 7296 dams were analyzed. The results showed that maternal effects and direct-maternal genetic covariance should be considered for accurate genetic evaluation and that positive and medium to high genetic correlations exist among pre-weaning growth traits.
FRONTIERS IN VETERINARY SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
Sheila Aikins-Wilson, Mehdi Bohlouli, Sven Koenig
Summary: This study analyzed the genetic parameters for tail characteristics and growth traits in pigs, focusing on the importance of tail length and tail lesions in triggering tail biting behavior. The results showed potential for genetic selection on short tails and highlighted the complexity of genetic relationships between tail characteristics and growth traits. Ongoing studies are exploring further genetic mechanisms and associations between tail length and tail lesions to better understand tail biting behavior.
JOURNAL OF ANIMAL SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
Renzo Bonifazi, Jeremie Vandenplas, Jan Ten Napel, Roel F. Veerkamp, Mario P. L. Calus
Summary: This study investigated the impact of using estimated values versus assumed values for direct-maternal genetic correlations in international beef cattle evaluations. The results indicated that ignoring r(dm)_(BC) had less effect on direct IEBVs compared to maternal IEBVs, and re-ranking of maternal IEBVs decreased with increasing reliability. Additionally, neglecting both r(dm)_(BC) and r(dm)_(WC) led to significant re-ranking of animals' IEBVs across all groups evaluated.
JOURNAL OF ANIMAL SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Bruce R. Southey, Courtni R. Bolt, Haley E. Rymut, Marissa R. Keever, Alexander V. Ulanov, Zhong Li, Laurie A. Rund, Rodney W. Johnson, Sandra L. Rodriguez-Zas
Summary: Weaning and prenatal stress can impact the offspring's liver function and metabolic pathways. Weaning leads to changes in hepatic metabolism, oxidative stress, and inflammation, while prenatal stress affects amino acids and cholesterol levels. The findings suggest that these stressors can influence metabolic products associated with health and behavior disorders in the peripheral and central nervous systems.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2021)
Article
Veterinary Sciences
Martine Schroyen, Bing Li, Ester Arevalo Sureda, Yuping Zhang, Julie Leblois, Dieter Deforce, Filip Van Nieuwerburgh, Jose Wavreille, Nadia Everaert
Summary: The supplementation of prebiotics, such as inulin, in piglets led to minor differences in gene expression in the ileum, with several genes involved in lipid metabolism being downregulated, indicating a potential role in promoting lipolysis. These findings suggest that lipid metabolism genes expressed in the ileum may play a crucial role when supplementing piglets with prebiotics early in life before weaning.
VETERINARY SCIENCES
(2021)
Article
Agriculture, Dairy & Animal Science
J. F. M. Winters, L. Foldager, L. J. Pedersen
Summary: Abrupt weaning of four-week-old pigs is associated with multiple stressors. Housing pigs in intact litters can reduce the stress of moving and mixing unfamiliar pigs. A heavier pig hybrid and weaning intact litters in the farrowing pen resulted in better postweaning growth.
Article
Agriculture, Dairy & Animal Science
Sedat Behrem
Summary: This study estimated genetic parameters for birth weight (BW), weaning weight (WW), and average pre-weaning daily weight gain (ADWG) in Central Anatolian Merino sheep. The results showed moderate direct heritability estimates for BW, WW, and ADWG, while maternal heritability estimates were relatively low. The genetic correlation between BW and WW was moderate and negative, while phenotypic and residual correlations were close to zero.
SMALL RUMINANT RESEARCH
(2021)
Article
Microbiology
Martin Peter Rydal, Michela Gambino, Josue L. Castro-Mejia, Louise Ladefoged Poulsen, Claus Bottcher Jorgensen, Jens Peter Nielsen
Summary: In this longitudinal study, no significant association was found between pre-weaning fecal microbiome composition and diversity and post-weaning diarrhea (PWD) susceptibility in a Danish sow herd.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Ming Zhang, Yichen Liu, Zhipeng Li, Peng Lu, Jacob D. Gardner, Maolin Ye, Jihuai Wang, Miaomiao Yang, Jing Shao, Weilin Wang, Qingyan Dai, Peng Cao, Ruowei Yang, Feng Liu, Xiaotian Feng, Lizhao Zhang, Enwei Li, Yunzheng Shi, Zehui Chen, Shilun Zhu, Weiwei Zhai, Tao Deng, Ziyuan Duan, E. Andrew Bennett, Songmei Hu, Qiaomei Fu
Summary: This study reveals the maternal genetic continuity of East Asian domestic pigs dating back to the Early to Middle Neolithic, while European domestic pigs experienced a near-complete genomic replacement. Two major population expansions of East Asian domestic pigs coincided with changes in climate, the adoption of introduced crops, and the development of agrarian societies.
JOURNAL OF GENETICS AND GENOMICS
(2022)
Article
Agriculture, Dairy & Animal Science
Conference Thando Mpendulo, Vuyisa Andries Hlatini, Cypril Ndumiso Ncobela, Michael Chimonyo
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES
(2018)
Article
Agriculture, Dairy & Animal Science
Conference Thando Mpendulo, Michael Chimonyo, Saymore Petros Ndou, Archibold Garikayi Bakare
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES
(2018)
Article
Agriculture, Dairy & Animal Science
M. Mkwanazi, A. T. Kanengoni, M. Chimonyo
CANADIAN JOURNAL OF ANIMAL SCIENCE
(2018)
Article
Food Science & Technology
Annah Shingirai Paraffin, Titus Jairus Zindove, Michael Chimonyo
JOURNAL OF FOOD QUALITY
(2018)
Article
Agriculture, Dairy & Animal Science
Zwelethu Mfanafuthi Mdletshe, Sithembile Zenith Ndlela, Ignatius Verla Nsahlai, Michael Chimonyo
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2018)
Review
Agriculture, Dairy & Animal Science
Mbusiseni Vusumuzi Mkwanazi, Cypril Ndumiso Ncobela, Arnold Tapera Kanengoni, Michael Chimonyo
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES
(2019)
Article
Agriculture, Dairy & Animal Science
X. C. Gudiso, V. A. Hlatini, C. N. Ncobela, M. Chimonyo, P. L. Mafongoya
CANADIAN JOURNAL OF ANIMAL SCIENCE
(2019)
Article
Agriculture, Dairy & Animal Science
X. Gudiso, V. Hlatini, M. Chimonyo, P. Mafongoya
JOURNAL OF APPLIED POULTRY RESEARCH
(2019)
Article
Agriculture, Dairy & Animal Science
Takunda Dzavo, Titus J. Zindove, Marshall Dhliwayo, Michael Chimonyo
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2019)
Article
Agriculture, Dairy & Animal Science
Mbusiseni Vusumuzi Mkwanazi, Arnold Tapera Kanengoni, Michael Chimonyo
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES
(2019)
Article
Biotechnology & Applied Microbiology
Annah Shingirai Paraffin, Titus Jairus Zindove, Michael Chimonyo
JOURNAL OF FOOD SAFETY
(2019)
Article
Agriculture, Dairy & Animal Science
Alphonce Matope, Titus J. Zindove, Marshall Dhliwayo, Michael Chimonyo
TROPICAL ANIMAL HEALTH AND PRODUCTION
(2020)
Article
Food Science & Technology
Annah S. Paraffin, Titus J. Zindove, Michael Chimonyo
JOURNAL OF FOOD QUALITY
(2019)
Proceedings Paper
Cultural Studies
Saymore Petros Ndou, Michael Chimonyo
LOOKING BACK AND LIVING FORWARD: INDIGENOUS RESEARCH RISING UP
(2018)
Review
Agriculture, Dairy & Animal Science
V. A. Hlatini, C. N. Ncobela, T. J. Zindove, M. Chimonyo
SOUTH AFRICAN JOURNAL OF ANIMAL SCIENCE
(2018)
Article
Agriculture, Dairy & Animal Science
Adrian Lopez-Catalina, Valentin Costes, Ramon Peiro-Pastor, Helene Kiefer, Oscar Gonzalez-Recio
Summary: Epigenetic marks can explain part of the phenotypic variance in animal breeding models. Nanopore sequencing shows high correlation with bisulphite sequencing in identifying DNA methylation marks. Different sequencing methods highlight differentially methylated genes and positions of economic interest in animal breeding.