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66 articles for “Bull”
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Research ArticleOpen accessEvery word in the titleOn the Front Lines: Educating Teachers about Bullying and Prevention MethodsAviva Twersky GlasnerProblem statement: Bullying is a serious problem in American schools and is characterized by aggressive behavior distinguished by unequal power and the intention to cause physical, social, or emotional harm to others Bullying is evolving from the classic image of a big schoolyard bully picking on smaller kids to a more technologically, sophisticated model of kids using cyber technology to … …Journal of Social Sciences, Vol. 6, Issue 4 · 23 Oct 2010 · 9,283 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleCyber Bullying: Challenges and Strategies Faced by Juvenile Police OfficersKen ThaxterOne of the challenges of teaching pre-teens about the internet is their varying degrees and levels of involvement. The juvenile police officer brings a solid understanding of the laws as well as a strong knowledge of safety issues to the classroom, making them an excellent educational resource. Officers can utilize an educational approach with parents and students in which they … …Journal of Social Sciences, Vol. 6, Issue 4 · 23 Oct 2010 · 8,737 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Effect of Early Weaning on Performance, Health Parameters, and Carcass Traits of Bonsmara Bull Calves Under Feedlot ConditionsKgotso Patrick Matli, Thobela Louis Tyasi, Pieter FourieA feedlot is an intensive farming system used for finishing livestock. This study analyzed the performance, health, and carcass traits of Early-Weaned Calves (EWC) and Traditionally-Weaned Calves (TWC). A total of 285 Bonsmara bull calves were grouped into two weaning strategies, with 136 EWC (255±27.30 kg) and 149 TWC (308±24.60 kg). Backgrounding was followed by a finishing phase, with a … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 2 · 14 Aug 2026 · 1,239 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleTesticular Development in Holstein, F1 Crossbred Holstein-Gyr, Gyr, and Nellore Bulls During Puberty and Sexual Maturity in Tropical ConditionsGustavo Eduardo Freneau, Jose Domingos Guimaraes, Vicente Ribeiro Vale Filho, Arnhold EmmanuelContext: Puberty and sexual maturity are very important economic aspects in the beef industry and bull production. The aim of this study was to characterize and determine the sexual development of Bos taurus, Bos indicus, and F1 crossbreeds of these two subspecies of bulls and their testicular growth and shape. We observed the evolution of testicular development characteristics and seminal … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 2 · 9 Jul 2026 · 1,204 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleInfluence of Intracellular Reactive Oxygen Species in Several Spermatozoa Activity in Indonesian Ongole Bull Cryopreserved SpermKurniawan Dwi Prihantoko, Asmarani Kusumawati, Mulyoto Pangestu et al.Certain factors may affect sperm motility and integrity in a freezing process. Reactive Oxygen Species (ROS) is essential in damaging the sperm, as the previous study revealed that ROS is a major cause damaging the membrane of spermatozoa. This study aimed to understand ROS production and its interaction within the motility, mitochondrial activity and DNA damage to the cryopreservation process … …American Journal of Animal and Veterinary Sciences, Vol. 17, Issue 1 · 26 Jan 2022 · 6,846 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleStudy the Effect of Extracted Low-Density Lipoprotein from Egg Yolk on the Cryopreservation of Nguni Bull SemenMduduzi M. Tshabalala, Masindi Lottus Mphaphathi, Khathutshedzo A. Nephawe et al.The mechanism on how Egg Yolk (EY) helps sperm to survive the low temperature outside the animal body during cryopreservation and thawing process is not yet known. It is usually believed that the Low-Density Lipoprotein (LDL) is the major component that provides protection. The present study was undertaken to assess the cryo-protective effect of different concentrations (6, 8, 10 and … …American Journal of Animal and Veterinary Sciences, Vol. 16, Issue 3 · 13 Sep 2021 · 6,921 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleUse of Quinolones in Bull Semen Extenders to Reduce Sperm Deoxyribonucleic Acid DamageClara Gonzalez-Marin, Michael Eduard Kjelland, Rosa Roy et al.Cryopreserved sperm samples from Holstein bulls (n = 20) were examined for bacterial presence and Sperm DNA Fragmentation (SDF) dynamics. SDF was assessed after thawing (T0) and at 4, 24 and 48 h of incubation (37°C) and the rate of SDF (r-SDF), as an estimator of the DNA degradation over time, was calculated. Two groups of bulls were identified based … …American Journal of Animal and Veterinary Sciences, Vol. 7, Issue 4 · 29 Dec 2012 · 7,433 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleComparative Assessment of Meat Qualities of Purebred and Crossbred Kalmyk BullsI. N. Aitzhanova, G. I. Shaikamal, L. A. Seleuova et al.The purpose of thisstudy was to review the meat qualities of Kalmyk cattle by the method oflifetime evaluation of the meat forms of purebred and crossbred bulls bystudying growth and development, as well as determining the thickness ofsubcutaneous fat, the loin eye area and the meat marbling. Throughout theexperiment (from 6 to 12 months), Kalmyk bulls were characterized bysignificantly (p≤0.01) … …OnLine Journal of Biological Sciences, Vol. 22, Issue 3 · 20 Sep 2022 · 5,236 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSeasonal Variations in Semen Quality of Pasundan Bulls in their Native Tropical EnvironmentNurul Isnaini, Tri Harsi, Anggit Damaratri Lapoliwa et al.The success of artificial insemination highly depends on the semen quality, in which it may significantly associate with the environmental factor. However, the information regarding the seasonal effects on semen quality of Pasundan bulls is still scarce. This study aimed to examine seasonal variation in semen quality of Pasundan bulls in their native environment. A total of 203 ejaculates produced … …American Journal of Animal and Veterinary Sciences, Vol. 16, Issue 2 · 27 Apr 2021 · 7,936 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDoes it Get Better?: Childhood Bullying and the Positive Mental Health of LGBT Canadians in AdulthoodTamara Edkins, Tracey Peter, Catherine Taylor et al.Globally, Lesbian, Gay, Bisexual, Transgender and Queer (LGBTQ) individuals are a highly discriminated group. Few academics have explored whether LGBTQ youth who experience discrimination can “get better”, especially with respect to their positive mental health. Using minority stress theory, the current study explored whether there was a long-term relationship between childhood bullying and positive mental health in adulthood among LGBTQ … …Journal of Social Sciences, Vol. 14, Issue 1 · 10 Feb 2018 · 8,198 accessesView PDFCite