https://aab.copernicus.org/articles/ Recent articles of the journal Archives Animal Breeding https://doi.org/10.5194/aab-69-431-2026 <b>Meat production traits of Lalahan sheep: fattening, slaughter, and carcass characteristics of lambs</b><br> Rabia Arslan, Necmettin Ünal, and Akın Yakan<br> Arch. Anim. Breed., 69, 431–439, https://doi.org/10.5194/aab-69-431-2026, 2026<br> This study was conducted to determine the slaughter and carcass characteristics of Lalahan sheep, a new genotype in Türkiye, at different slaughter weights. The results indicated that the optimal slaughter weight for meat production, when both feeding performance and slaughter and carcass characteristics were evaluated together, was 40 kg.  2026-08-19T07:09:33+02:00 https://doi.org/10.5194/aab-69-421-2026 <b>Reproductive and endocrine responses to short-term safflower seed supplementation in anestrous ewes synchronized with progestagen</b><br> Metehan Kutlu and Halef Doğan<br> Arch. Anim. Breed., 69, 421–429, https://doi.org/10.5194/aab-69-421-2026, 2026<br> Short-term whole safflower seed supplementation was evaluated in anestrous ewes. Ewes were synchronized using a 7 d progestagen-based protocol during the non-breeding season. Safflower seed supplementation did not improve estrus, pregnancy, lambing rate, or litter size. Serum estradiol increased and PGFM (13,14-dihydro-15-keto prostaglandin F2α) decreased over time in both experimental groups. Whole safflower seed cannot be recommended as a short-term nutritional adjunct for improving out-of-season reproductive performance in ewes. 2026-08-17T07:09:33+02:00 https://doi.org/10.5194/aab-69-411-2026 <b>GH-mRNA expression and prediction of genetic improvement using selection index for body weight traits in turkeys</b><br> Mohamed H. Khalil, Alaa A. Abd El-Motaleb, Manal M. Abdel-Rahman, Emad M. Amin, Ibrahim Abousoliman, and Mostafa K. Shebl<br> Arch. Anim. Breed., 69, 411–420, https://doi.org/10.5194/aab-69-411-2026, 2026<br> This study evaluated a selection index based on body weight, shank length, and breast width to improve turkey performance, examining its relationship with growth hormone (GH) gene expression. Selected turkeys showed higher expected genetic gains and significantly increased GH expression in both sexes, indicating a positive association between GH expression and body weight, and its potential use as a genetic selection marker. 2026-08-17T07:09:33+02:00 https://doi.org/10.5194/aab-69-397-2026 <b>Effects of different slaughter weights on meat quality parameters and gene expression related to fat metabolism in muscles, liver, and gluteal fat in Lalahan lambs</b><br> Rabia Arslan, Necmettin Ünal, and Akın Yakan<br> Arch. Anim. Breed., 69, 397–409, https://doi.org/10.5194/aab-69-397-2026, 2026<br> In this study, meat quality parameters in Lalahan sheep, a new genotype, were examined in detail at different slaughter weights. In addition, the expression levels of certain genes important for fat metabolism were evaluated in detail in liver, muscle, and adipose tissue.  2026-08-07T07:09:33+02:00 https://doi.org/10.5194/aab-69-383-2026 <b>Semantic modelling of animal welfare explained – Part 2: The basis of welfare weighting and usage of scientific information</b><br> Margret L. Vonholdt-Wenker, Janine Benthin, Karen Kauselmann, Marc B. M. Bracke, and E. Tobias Krause<br> Arch. Anim. Breed., 69, 383–396, https://doi.org/10.5194/aab-69-383-2026, 2026<br> Semantic modelling is a procedure that can be used to assess overall animal welfare. Through the selection of scientific statements, semantic models can generate overall welfare scores. Our objective was to provide guidelines to make semantic modelling more formalised and transparent and to facilitate the use of this methodology to assess (farm) animal welfare. Ultimately, those guidelines should aid (new) modellers in applying the principles of semantic modelling in a standardised way. 2026-07-16T07:09:33+02:00 https://doi.org/10.5194/aab-69-363-2026 <b>Semantic modelling of animal welfare explained – Part 1: Calculating overall welfare scores for husbandry systems using the ANyWEL model framework</b><br> Janine Benthin, Karen Kauselmann, E. Tobias Krause, Marc B. M. Bracke, and Margret L. Vonholdt-Wenker<br> Arch. Anim. Breed., 69, 363–382, https://doi.org/10.5194/aab-69-363-2026, 2026<br> We developed the ANyWEL (ANimal WELfare assessment of anY farm animal) model for improved semantic modelling. The model allows for the synthesis of scientific information about animal welfare. Housing conditions can be compared and ranked and welfare-relevant properties can be distinguished. We explain how this procedure works through a fictitious animal species. Herewith, semantic modelling becomes more transparent with regard to how scientific knowledge can be used to produce overall welfare scores. 2026-07-16T07:09:33+02:00 https://doi.org/10.5194/aab-69-347-2026 <b>The role of ESR1 in regulating lactation traits in buffalo mammary epithelial cells</b><br> Zhixiang Wang, Xiaoyun Chen, Chaobin Qin, Jiaqi Jiang, Ling Li, Qingyou Liu, Cuijin Teng, Jinping Xiong, Leyi Wang, Ahmed Amin, and Zhipeng Li<br> Arch. Anim. Breed., 69, 347–361, https://doi.org/10.5194/aab-69-347-2026, 2026<br> 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. 2026-06-25T07:09:33+02:00 https://doi.org/10.5194/aab-69-337-2026 <b>Blood metabolic profile and complete blood count of sheep during late pregnancy and lactation</b><br> Zvonko Antunović, Josipa Kučan, Željka Klir Šalavardić, Mislav Djidara, and Josip Novoselec<br> Arch. Anim. Breed., 69, 337–346, https://doi.org/10.5194/aab-69-337-2026, 2026<br> 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.  2026-06-22T07:09:33+02:00 https://doi.org/10.5194/aab-69-323-2026 <b>Genetic variability and associations of Trakehner and other horse populations in Lithuania</b><br> Alma Račkauskaitė, Rūta Šveistienė, Violeta Razmaitė, Virginija Jatkauskienė, and Šarūnė Marašinskienė<br> Arch. Anim. Breed., 69, 323–336, https://doi.org/10.5194/aab-69-323-2026, 2026<br> 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. 2026-06-02T07:09:33+02:00 https://doi.org/10.5194/aab-69-309-2026 <b>RNA sequencing reveals lncRNAs that specifically regulate unsaturated fatty acid generation in buffaloes</b><br> Xinyu Zeng, Hao Tian, Haopeng Wang, Fangfang Zou, Hongfang Mo, Xingrong Lu, Chunyan Yang, Deshun Shi, Jianghua Shang, and Jieping Huang<br> Arch. Anim. Breed., 69, 309–321, https://doi.org/10.5194/aab-69-309-2026, 2026<br> 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. 2026-05-26T07:09:33+02:00 https://doi.org/10.5194/aab-69-301-2026 <b>Influence of heat stress and nighttime recovery on ovarian follicle population, oocyte yield, and in vitro embryo production in Holstein heifers</b><br> Muhammed Furkan Ciftci, Ömer Faruk Yesilkaya, Maide Gölbası, Ayse Sarı, Sakine Ülküm Cizmeci, and Dursun Ali Dinc<br> Arch. Anim. Breed., 69, 301–308, https://doi.org/10.5194/aab-69-301-2026, 2026<br> 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. 2026-05-19T07:09:33+02:00 https://doi.org/10.5194/aab-69-289-2026 <b>Effects of pregnancy type, genotype, and parturition stage on ewe behavior</b><br> Ömer Faruk Güngör, Necmettin Ünal, and Yavuzkan Paksoy<br> Arch. Anim. Breed., 69, 289–299, https://doi.org/10.5194/aab-69-289-2026, 2026<br> 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. 2026-05-12T07:09:33+02:00 https://doi.org/10.5194/aab-69-275-2026 <b>Effects of capsaicin and monensin on ruminal fermentation, intake, nutrient digestibility, and ruminal dynamics of grazing bulls</b><br> 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<br> Arch. Anim. Breed., 69, 275–287, https://doi.org/10.5194/aab-69-275-2026, 2026<br> 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. 2026-05-05T07:09:33+02:00 https://doi.org/10.5194/aab-69-265-2026 <b>Protective effect of dietary L-carnitine supplementation on follicular development in the ovary of ewes with subclinical pregnancy toxemia</b><br> 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<br> Arch. Anim. Breed., 69, 265–273, https://doi.org/10.5194/aab-69-265-2026, 2026<br> 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. 2026-04-30T07:09:33+02:00 https://doi.org/10.5194/aab-69-251-2026 <b>Enhancement of productive performance, nutrient digestibility, and meat quality in broilers subjected to cyclic heat stress via different organic and inorganic chromium concentrations</b><br> 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<br> Arch. Anim. Breed., 69, 251–263, https://doi.org/10.5194/aab-69-251-2026, 2026<br> 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. 2026-04-28T07:09:33+02:00 https://doi.org/10.5194/aab-69-239-2026 <b>Unveiling novel insights into the role and characteristics of sperm heat shock protein 70 in indigenous Donggala bulls: implications for molecular-based motility markers</b><br> 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<br> Arch. Anim. Breed., 69, 239–250, https://doi.org/10.5194/aab-69-239-2026, 2026<br> 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. 2026-04-20T07:09:33+02:00 https://doi.org/10.5194/aab-69-227-2026 <b>The effect of sperm concentration on the morphometric traits of spermatozoa of the Arctic fox (Vulpes lagopus)</b><br> Karolina Stasiak, Stanisław Kondracki, and Dorota Cygan-Szczegielniak<br> Arch. Anim. Breed., 69, 227–238, https://doi.org/10.5194/aab-69-227-2026, 2026<br> 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. 2026-04-13T07:09:33+02:00 https://doi.org/10.5194/aab-69-217-2026 <b>Genetic and non-genetic determinants of farrowing and lactation traits in multiparous sows under intensive management</b><br> 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<br> Arch. Anim. Breed., 69, 217–225, https://doi.org/10.5194/aab-69-217-2026, 2026<br> 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. 2026-04-09T07:09:33+02:00 https://doi.org/10.5194/aab-69-215-2026 <b>Corrigendum to “Effect of oxytocin added into sperm on artificial insemination in sheep” published in Arch. Anim. Breed., 66, 61–69, 2023</b><br> Çağrı Kandemir<br> Arch. Anim. Breed., 69, 215–216, https://doi.org/10.5194/aab-69-215-2026, 2026<br> 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. 2026-03-31T07:09:33+02:00 https://doi.org/10.5194/aab-69-205-2026 <b>Effects of essential oil blend supplementation on growth performance, nutrient digestibility, immune response, villus histology and cecal microbiota in broilers</b><br> 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<br> Arch. Anim. Breed., 69, 205–214, https://doi.org/10.5194/aab-69-205-2026, 2026<br> 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. 2026-03-30T07:09:33+02:00