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28 results for “Bulls”
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Research ArticleOpen accessEvery word in the titleAssessment of Breeding Qualities of Kazakh White-Headed Bulls by Testing Their ProductivityAruzhan Nugmanova, Aliya Akhmetaliyeva, Yedige Nassambayev et al.The purpose of the study was to quantify the breeding qualities of Kazakh White-Headed bulls by assessing their productivity metrics. The primary objectives were to analyze live weight dynamics, daily growth rates, feed conversion efficiency, and morphological meat quality and to employ "A" complex indices for evaluating the breeding potential. The study observed bulls aged 8-15 months at the Khafiza … …American Journal of Animal and Veterinary Sciences, Vol. 19, Issue 3 · 26 Jul 2024 · 5,407 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAdvanced Assessing Techniques of the Reproductive Performance of BullsGulzat Turysbayeva, Isatay Jakupov, Aisulu Kuzerbayeva, Zhanargul ZharkimbayevaThe sperm quality supplied by producers is an urgent problem in the field of livestock breeding. Therefore, monitoring the health of male producers and sperm quality is of great priority. The study aimed to assess the reproductive performance of bulls using laboratory, clinical, morphological, ultrasound and reflexological techniques. A total of 17 heads of Kazakh-white-headed, Holstein-Frieze and Simmental breeds were … …American Journal of Animal and Veterinary Sciences, Vol. 18, Issue 1 · 23 Jan 2023 · 5,666 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleCharacteristics and Pre-Weaning Growth of Crossbred between Belgian Blue and Wagyu Bulls with Brahman Cross DamsPanjono, Ali Agus, Tety Hartatik et al.This study wasconducted to observe characteristics and pre-weaning growth traits of calvesborn from crossbreeding between Wagyu and Belgian Blue (BB) bulls with BrahmanCross (BX) dams. The experiment was conducted to compare two different crossesBelgian Blue (BB) x BX, Wagyu x BX and also with BX pure breed (BX x BX). Inthe first two crosses, we used Artificial Insemination (AI), while … …American Journal of Animal and Veterinary Sciences, Vol. 17, Issue 3 · 29 Aug 2022 · 8,069 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFattening Performance of Bulls of three Breeds Fattened Semi-Intensively in the Kostanay RegionIndira Aitzhanova, Doskali K. Naimanov, Bartosz Miciński et al.The aim of this study was to determine the effect of cattle breed on carcass traits and meat quality of bulls fattened semi-intensively and slaughtered at 18 months of age. The animals were divided into three experimental groups: Group AA - 16 Angus bulls, group WK - 19 Kazakh White headed bulls, group AK - 20 Kazakh Aulie-Ata bulls. All … …OnLine Journal of Biological Sciences, Vol. 17, Issue 3 · 7 Jul 2017 · 7,438 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 · 1,197 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 · 5,232 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 · 7,931 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleRelationship of Scrotal Circumference with Spermatozoa Production in Various Breed of Indonesian Local BullsTrinil Susilawati, Nisa’us Sholikah, Sri Wahjuningsih et al.Bulls for artificial insemination must qualify as a superior bull that has good genetic quality and semen production. Therefore, the selection process for bulls must be carried out accurately. The study aims to determine the relationship between scrotal circumference with semen production in the Ongole crossbred, Bali, Madura and Brahman bulls. The research materials were four breeds of bull Ongole … …American Journal of Animal and Veterinary Sciences, Vol. 15, Issue 2 · 28 Apr 2020 · 7,707 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleQuality of Sperm Simmental Bulls and Success of Artificial Insemination with the Addition of Nanocalcium Phosphate in Tris Aminomethane Egg Yolk Diluent Using Semen Storage Ampoules from Nanocalcium Silicophosphate BiomaterialsEnike Dwi Kusumawati, I Wayan Karyasa, Yogi Pratama Putra et al.Success in Artificial Insemination (AI) is largely determined by the quality of the stored semen, therefore storage devices, especially straws or ampoules, are an important part that cannot be separated from the overall semen cryopreservation technology. Making a prototype of semen storage ampoules from nanocalcium silicophosphate biomaterials is based on the need for straws or ampoules. Semen storage in spermatozoa … …American Journal of Animal and Veterinary Sciences, Vol. 19, Issue 2 · 28 May 2024 · 5,211 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffect of Repeated Freezing and Thawing on Nguni Sperm Parameters Evaluated by Computer Assisted Sperm Analyzer SystemMasindi Lottus Mphaphathi, Tshimangadzo Lucky NedambaleThe aims of the current study were to assess the effect of double freezing and thawing on Nguni semen parameters. Semen was collected from Nguni bulls. The Sperm Class Analyzer® system was used to evaluate sperm motility rates prior and post freezing, repeatedly. Semen samples were diluted with egg yolk citrate extender. Cooled semen samples were loaded into straws and … …American Journal of Animal and Veterinary Sciences, Vol. 16, Issue 1 · 27 Jan 2021 · 6,591 accessesView PDFCite