https://aab.copernicus.org/articles/ Recent articles of the journal Archives Animal Breeding en https://doi.org/10.5194/aab-69-347-2026 The role of ESR1 in regulating lactation traits in buffalo mammary epithelial cells Zhixiang Wang, Xiaoyun Chen, Chaobin Qin, Jiaqi Jiang, Ling Li, Qingyou Liu, Cuijin Teng, Jinping Xiong, Leyi Wang, Ahmed Amin, and Zhipeng Li Arch. Anim. Breed., 69, 347–361, https://doi.org/10.5194/aab-69-347-2026, 2026 Buffalo milk is valued for its rich flavor and high nutrition. However, the lag in genetic research has limited the utilization of buffalo lactation traits. This study found that ESR1 (estrogen receptor alpha) supports cell growth and health, enhances milk fat and protein production, and reduces cell damage. This work offers new insights for breeding and management to improve milk yield and quality, supporting more sustainable dairy production for farmers and consumers globally. Thu, 25 Jun 2026 19:55:14 +0200 https://doi.org/10.5194/aab-69-337-2026 Blood metabolic profile and complete blood count of sheep during late pregnancy and lactation Zvonko Antunović, Josipa Kučan, Željka Klir Šalavardić, Mislav Djidara, and Josip Novoselec Arch. Anim. Breed., 69, 337–346, https://doi.org/10.5194/aab-69-337-2026, 2026 The research was performed on 30 adult Lika Pramenka sheep, aiming to determine the influence of physiological stage on blood metabolic profile. Changes in blood indicators were expressed in heavily pregnant and lactating sheep. This research suggests that studies should include physiological status and feed quality in the determination of the metabolic profile of sheep's blood in order to obtain the best possible information on the herd.  Mon, 22 Jun 2026 19:55:14 +0200 https://doi.org/10.5194/aab-69-323-2026 Genetic variability and associations of Trakehner and other horse populations in Lithuania Alma Račkauskaitė, Rūta Šveistienė, Violeta Razmaitė, Virginija Jatkauskienė, and Šarūnė Marašinskienė Arch. Anim. Breed., 69, 323–336, https://doi.org/10.5194/aab-69-323-2026, 2026 This study evaluated the genetic diversity of Trakehner horses in comparison with Arabian, Baltic Warmblood, Lithuanian Warmblood, and Zemaitukai populations in Lithuania. Using pedigree and parentage verification data, we showed how breeding practices influenced genetic diversity over time. Despite population decline, Trakehner horses maintained balanced genetic variability. The results support sustainable breeding and conservation strategies. Tue, 02 Jun 2026 19:55:14 +0200 https://doi.org/10.5194/aab-69-309-2026 RNA sequencing reveals lncRNAs that specifically regulate unsaturated fatty acid generation in buffaloes Xinyu Zeng, Hao Tian, Haopeng Wang, Fangfang Zou, Hongfang Mo, Xingrong Lu, Chunyan Yang, Deshun Shi, Jianghua Shang, and Jieping Huang Arch. Anim. Breed., 69, 309–321, https://doi.org/10.5194/aab-69-309-2026, 2026 The content of unsaturated fatty acids (UFAs) is significantly associated with the flavor, taste, and nutritional value of beef. Breeders desire to increase the UFA content as much as possible. This study provides a comprehensive atlas of lncRNA profiles across six adipose tissue (AT) depots and identifies two lncRNAs with a high correlation with UFA content in buffaloes. These findings offer valuable insights and lncRNAs for the regulation of UFA synthesis in buffaloes. Tue, 26 May 2026 19:55:14 +0200 https://doi.org/10.5194/aab-69-301-2026 Influence of heat stress and nighttime recovery on ovarian follicle population, oocyte yield, and in vitro embryo production in Holstein heifers Muhammed Furkan Ciftci, Ömer Faruk Yesilkaya, Maide Gölbası, Ayse Sarı, Sakine Ülküm Cizmeci, and Dursun Ali Dinc Arch. Anim. Breed., 69, 301–308, https://doi.org/10.5194/aab-69-301-2026, 2026 This study investigated the impact of continuous heat stress and nighttime recovery on the yield of oocytes and the production of embryos in Holstein heifers. Oocyte collection sessions in the same herd under identical care and feeding were categorized using the day’s peak and average heat–humidity load. It was observed that nighttime recovery had a positive effect on oocyte and blastocyst yield. This suggests that nighttime temperatures should be considered when evaluating heat stress. Tue, 19 May 2026 19:55:14 +0200 https://doi.org/10.5194/aab-69-289-2026 Effects of pregnancy type, genotype, and parturition stage on ewe behavior Ömer Faruk Güngör, Necmettin Ünal, and Yavuzkan Paksoy Arch. Anim. Breed., 69, 289–299, https://doi.org/10.5194/aab-69-289-2026, 2026 This study examined how pregnancy type, genotype, and parturition stage affect sheep behavior and labor traits. Twin pregnancies resulted in longer labor and different behavioral patterns compared to singletons, while genotype showed minimal impact. Lying and standing frequency of ewes during the first two stages of parturition was a useful indicator of pregnancy type and labor timing. The results highlight the importance of customized management strategies to improve ewe welfare and lamb survival rates. Tue, 12 May 2026 19:55:14 +0200 https://doi.org/10.5194/aab-69-275-2026 Effects of capsaicin and monensin on ruminal fermentation, intake, nutrient digestibility, and ruminal dynamics of grazing bulls Murilo R. Santiago, Mónica Madrigal-Valverde, Ana Paula G. da Silva, Maria Leonor G. M. L. de Araújo, Gleidson Giordano P. de Carvalho, Douglas dos Santos Pina, Aureliano José V. Pires, Artur A. Menezes, Lara L. Dantas, Maria Luiza O. Chaves, Lara Maria S. Brant, and José Esler de Freitas Júnior Arch. Anim. Breed., 69, 275–287, https://doi.org/10.5194/aab-69-275-2026, 2026 Optimizing grazing animal feeding improves livestock efficiency and reduces environmental impacts. Monensin use raises concerns about resistant bacteria and public health. Replacing monensin with capsaicin showed no differences in intake, digestibility, blood parameters, or ruminal fermentation. This suggests that strategic supplementation can enhance productivity and sustainability in livestock farming. Tue, 05 May 2026 19:55:14 +0200 https://doi.org/10.5194/aab-69-265-2026 Protective effect of dietary L-carnitine supplementation on follicular development in the ovary of ewes with subclinical pregnancy toxemia Ali Osman Turgut, Merve Pekince Özöner, Davut Koca, Ebru Karakaya Bilen, Fatma İşbilir, Özgür Özöner, Ali Ünver, Mehmet Eroğlu, Çiğdem Bolaç, Muhammed Hasan Şirin, and İhsan İşbilir Arch. Anim. Breed., 69, 265–273, https://doi.org/10.5194/aab-69-265-2026, 2026 This study examined the effects of subclinical pregnancy toxemia (SPT) on follicular development and evaluated the protective potential of L-carnitine supplementation in ewes. İn this study, our results highlight the importance of adequate nutrition and metabolic support during late gestation, suggesting that L-carnitine supplementation may enhance follicular growth and reproductive performance in ewes with SPT. Thu, 30 Apr 2026 19:55:14 +0200 https://doi.org/10.5194/aab-69-251-2026 Enhancement of productive performance, nutrient digestibility, and meat quality in broilers subjected to cyclic heat stress via different organic and inorganic chromium concentrations Youssef Abdelwahab Attia, Nicola Francesco Addeo, Fulvia Bovera, Rashed Abdullah Alhotan, Khalid Ali Asiry, Mohamed Alsaeed Al-Banoby, El-Shahat Mohamed Qota, Adel Daifallah Al-qurashi, and Ahmed Shaban Awad Arch. Anim. Breed., 69, 251–263, https://doi.org/10.5194/aab-69-251-2026, 2026 This study investigated the effect of organic and inorganic chromium supplementation on growth and nutrient digestibility in chickens raised under chronic heat stress. The results show that 400 ppb organic chromium and 100 ppb inorganic chromium improve growth and protein digestibility. The use of organic chromium has demonstrated greater effectiveness, suggesting that it could be a useful strategy for nutritional management under adverse climatic conditions. Tue, 28 Apr 2026 19:55:14 +0200 https://doi.org/10.5194/aab-69-239-2026 Unveiling novel insights into the role and characteristics of sperm heat shock protein 70 in indigenous Donggala bulls: implications for molecular-based motility markers Berlin Pandapotan Pardede, Asmarani Kusumawati, Erif Maha Nugraha Setyawan, Yonathan Alvin Maruli Asi Sihotang, Sri Gustari, Yulius Duma, Syahruddin Said, Sari Yanti Hayanti, Tulus Maulana, Hikmayani Iskandar, Bambang Purwantara, and Erdogan Memili Arch. Anim. Breed., 69, 239–250, https://doi.org/10.5194/aab-69-239-2026, 2026 This study is the first to measure a natural sperm protection protein at both gene and protein levels in Donggala bulls, an Indonesian cattle breed not previously studied this way. We found that higher levels of this protein are linked to better sperm movement, healthier cell membranes, and less damage after freezing and thawing. This protein can help identify stronger bulls for breeding and support improved cattle reproduction and conservation. Mon, 20 Apr 2026 19:55:14 +0200 https://doi.org/10.5194/aab-69-227-2026 The effect of sperm concentration on the morphometric traits of spermatozoa of the Arctic fox (Vulpes lagopus) Karolina Stasiak, Stanisław Kondracki, and Dorota Cygan-Szczegielniak Arch. Anim. Breed., 69, 227–238, https://doi.org/10.5194/aab-69-227-2026, 2026 The ability of spermatozoa to penetrate the egg and their competitiveness in the female reproductive organs may depend on their dimensions and shape, and these are often related to the characteristics of the ejaculate.  It has been shown that, as sperm concentration in the ejaculate increases, the dimensions of spermatozoa heads and tails decrease. Sperm concentration also affects the shape of Arctic fox spermatozoa. Mon, 13 Apr 2026 19:55:14 +0200 https://doi.org/10.5194/aab-69-217-2026 Genetic and non-genetic determinants of farrowing and lactation traits in multiparous sows under intensive management Daniel González-Sánchez, José F. Vázquez-Armijo, Héctor H. Velázquez-Villalva, Benito Albarrán-Portillo, Germán Gómez-Tenorio, Nicolas Lopez-Villalobos, Xochitl F. De la Rosa-Reyna, and Gaspar M. Parra-Bracamonte Arch. Anim. Breed., 69, 217–225, https://doi.org/10.5194/aab-69-217-2026, 2026 This research studied what affects the number and health of piglets in large-scale farms. It found that the year, the mother sow's age, and her weight at birth are major factors. Moving piglets between litters after birth (cross-fostering) also helps them grow better. While genetics play a role, good management practices are even more important. The best results come from combining careful genetic selection with excellent daily care, proper feeding, and a controlled environment for the animals. Thu, 09 Apr 2026 19:55:14 +0200 https://doi.org/10.5194/aab-69-215-2026 Corrigendum to “Effect of oxytocin added into sperm on artificial insemination in sheep” published in Arch. Anim. Breed., 66, 61–69, 2023 Çağrı Kandemir Arch. Anim. Breed., 69, 215–216, https://doi.org/10.5194/aab-69-215-2026, 2026 The overall success rate based on the insemination results of all the sheep was determined to be 82.77%. In an examination of the pregnancy rate, one of the indicators of reproductive performance, the difference between the groups is statistically significant (p≤0.05). Higher pregnancies were obtained in insemination with semen fluid containing oxytocin. Tue, 31 Mar 2026 19:55:14 +0200 https://doi.org/10.5194/aab-69-205-2026 Effects of essential oil blend supplementation on growth performance, nutrient digestibility, immune response, villus histology and cecal microbiota in broilers Nisar Muhammad Khan, Muhammad Tahir, Shabana Naz, Rifat Ullah Khan, Rasha Alonaizan, Rasha K. Al-Akeel, Ala Abudabos, Raed M. Al-Atiyat, Ihteshamul Haq, and Ibrahim A. Alhidary Arch. Anim. Breed., 69, 205–214, https://doi.org/10.5194/aab-69-205-2026, 2026 This study evaluated essential oil (EO) blend supplementation (0–2 mL/kg feed) in broilers. The 2 mL/kg group showed higher feed intake, weight gain, improved feed conversion ratio (FCR), enhanced nutrient digestibility, and elevated antibody titers against viral diseases, indicating that this EO level effectively supports growth, nutrient utilization, and immunity. Mon, 30 Mar 2026 19:55:14 +0200 https://doi.org/10.5194/aab-69-193-2026 Long-term reproductive, growth, and carcass performance of Morkaraman, Awassi, and Tuj sheep in semi-arid extensive systems Dogan Turkyilmaz Arch. Anim. Breed., 69, 193–203, https://doi.org/10.5194/aab-69-193-2026, 2026 This study reports long-term data collected over 10 years on the reproduction, growth, carcass yield, chemical composition, and sensory quality of meat from three native sheep breeds raised under extensive conditions in eastern Türkiye. By combining farm records with laboratory and sensory analyses, clear breed-specific differences were revealed. The results provide a strong scientific basis for sustainable, breed-oriented sheep production and meat quality improvement. Thu, 26 Mar 2026 19:55:14 +0100 https://doi.org/10.5194/aab-69-181-2026 Effects of on-farm hatching on hatching success and first-week chick performance of local and commercial broiler genotypes Meryem Güler and Metin Petek Arch. Anim. Breed., 69, 181–192, https://doi.org/10.5194/aab-69-181-2026, 2026 This study was carried out to compare conventional hatchery-hatching and on-farm-hatching systems in terms of hatching success and first-week chick performance for different broiler genotypes. There were no significant differences in the hatchability of fertile eggs and total embryonic mortality between the hatching or genotype groups. Hatching time was significantly influenced by the hatching system and genotype.  Mon, 16 Mar 2026 19:55:14 +0100 https://doi.org/10.5194/aab-69-157-2026 Combating bovine mastitis: current insights and future directions for a global dairy challenge Shah Zeb Ahmad, Wenjuan Zhao, Ye Feng, Xubin Lu, Fagang Zhong, Mengli Han, Rifat Ullah Jan, Muhammad Irfan Khan, Zhangping Yang, and Zhi Chen Arch. Anim. Breed., 69, 157–180, https://doi.org/10.5194/aab-69-157-2026, 2026 Bovine mastitis, a costly inflammation caused mainly by pathogenic bacteria, harms milk yield and the economy worldwide. This review covers its clinical forms, diagnostics, the immune role of melatonin, and alternatives to antibiotics (such as herd management and bacteriophages). It highlights research gaps in genetics and microbiomes, urging integrated, sustainable control strategies. Thu, 12 Mar 2026 19:55:14 +0100 https://doi.org/10.5194/aab-69-143-2026 Genetic diversity and population structure of Balkan goat populations in Serbia based on microsatellite and mtDNA markers Nina Dominiković, Minja Zorc, Marko Ristanić, Vladimir Dimitrijević, Jovan Blagojević, Uroš Glavinić, and Zoran Stanimirović Arch. Anim. Breed., 69, 143–155, https://doi.org/10.5194/aab-69-143-2026, 2026 This study explores the genetic diversity of the Balkan goat. We analyzed specific parts of the genetic material in goats to understand how diverse and related they are. Results showed high genetic diversity and low levels of inbreeding. Analysis of maternal genetic lines in 16 animals revealed 12 different lineages belonging to haplogroup A. Mon, 09 Mar 2026 19:55:14 +0100 https://doi.org/10.5194/aab-69-129-2026 Evaluation of genetic effects on the fatty acid composition of intramuscular fat and backfat of the endangered Angler Saddleback pig Anna Olschewsky, Andreas Kleinlein, Dirk Hinrichs, Stefanie Klingel, Georg Thaller, Angela Sünder, and Daniel Mörlein Arch. Anim. Breed., 69, 129–142, https://doi.org/10.5194/aab-69-129-2026, 2026 The endangered Angler Saddleback pig is a fatty breed and has been fed high-fiber diets for decades. In view of this, a fatty acid composition different from that of commercial breeds was identified. In addition, the fatty acid composition in intramuscular fat and back fat was less correlated, suggesting a genetic effect in addition to dietary factors. Significant loci identified in genome-wide association studies underline the potential importance of this breed. Fri, 20 Feb 2026 19:55:14 +0100 https://doi.org/10.5194/aab-69-117-2026 Effect of human interference with maternal behaviour on development and blood biochemical parameters in the first 35 d of calves' life Marta Iwaszkiewicz, Aurelia Radzik-Rant, Katarzyna Czyż, Anna Wyrostek, and Witold Rant Arch. Anim. Breed., 69, 117–127, https://doi.org/10.5194/aab-69-117-2026, 2026 The study examined the effect of the human handling of newborn calves on their development and immune system efficiency. Holstein-Friesian calves in one group were licked after birth by the mother, whereas the other group were handled by a human. Daily gains were controlled, and blood was collected for protein fractions and complete blood count analysis. The replacement of natural maternal care (licking) of a newborn calf by a human did not adversely affect the development and health of the calf. Tue, 17 Feb 2026 19:55:14 +0100