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18 results for “Weaning Weight”
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Research ArticleOpen accessEvery word in the titleCow Efficiency, Relative-Birth Weight and Subsequent Pre-Weaning Growth Performance of Nguni CattleTakalani Judas Mpofu, Khathutshelo Agree Nephawe, Muzi Mandla Ginindza et al.The objective of this study was to evaluate factors influencing Cow Efficiency (CE), Relative-Birth Weight (R-BW), and subsequent pre-weaning growth performance of Nguni cattle in Limpopo Province, South Africa. Factors that were considered were dammed weight at calving, agro-ecological zone, the season of birth, sex of calves, parity, and dam age. Data from Nguni cows and their calves (n = … …American Journal of Animal and Veterinary Sciences, Vol. 17, Issue 2 · 23 May 2022 · 7,141 accessesView PDFCite
Research ArticleOpen accessIn the keywordsRelationship of Longevity with Productive and Reproductive Variables in Nelore Cows of the Bolivian TropicIkeda Atsuko, Barbona Ivana, Yoichiro Hayashi et al.The objective of this study was to evaluate the relationship between longevity with productive and reproductive efficiency variables of Nelore cows in grazing systems in the Bolivian tropics. Retrospective data corresponding to the period 1992-2019, belonging to the Cooperativa Agropecuaria Integral San Juan de Yapacaní and the Foundation Technology Center on Agriculture and Livestock, Santa Cruz-Bolivia were used. The data … …American Journal of Animal and Veterinary Sciences, Vol. 15, Issue 4 · 2 Dec 2020 · 6,626 accessesView PDFCite
Research ArticleOpen accessIn the keywordsReplacement Heifer Selection in A Beef Cattle HerdAkin Pala, Roger McCrawThe relationship between a heifer's weaning weight and her fertility and weaning weight of her calves was studied. Also investigated was the effect of dam amount of fat (DAF=dam weaning weight/weaning height) on heifers' ability to breed and rebreed. This is similar to Body Mass Index (BMI) calculated for humans. The relationship of dam's average daily gain from birth to … …American Journal of Applied Sciences, Vol. 2, Issue 2 · 28 Feb 2005 · 6,814 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe 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 · 1,233 accessesView PDFCite
Research ArticleOpen accessIn the abstractProduction and Reproduction of Primiparous Guinea Pigs Concerning Lysine LevelsYasmeen Camila Vargas-Jauja, Karin Marleny Casilla-Huallpa, Liz Beatriz Chino-Velasquez et al.The development of breeding animals is essential to ensure the productivity of guinea pigs, so an adequate supply of nutrients is required. However, information on their nutritional requirements is limited, particularly with regard to amino acids such as lysine, wich affects their productive performance. We evaluated the effects of dietary lysine levels (0.84, 1.01, 1.18, and 1.34%) on prim parous … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 2 · 28 May 2025 · 5,467 accessesView PDFCite
Research ArticleOpen accessIn the abstractSelection of Kalmyk Cattle in KazakhstanAnuarbek Temirbekovich Bissembayev, Alzhan Smailuly Shamshidin, Zhanat Maratovich Kasenov et al.The purpose of the study is to determine the precocity of Kalmyk cattle breeding stock in Kazakhstan and the accuracy of productivity assessment by indices of breeding value. It is established that calves are born with a live weight of 22.4-25.7 kg, at the age of six months they reach a live weight of 165.2-175.3 kg. The average daily increase … …OnLine Journal of Biological Sciences, Vol. 24, Issue 1 · 23 Nov 2023 · 5,716 accessesView PDFCite
Research ArticleOpen accessIn the abstractEstimated Breeding Values of Aberdeen-Angus Cattle BreedAnuarbek Temirbekovich Bissembayev, Alzhan Smailuly Shamshidin, Zhanat Maratovi Kasenov et al.The study aims to calculate the estimated breeding value of Aberdeen-Angus cattle using the BLUP method. The live weight of cattle of the Aberdeen-Angus breed was: At birth in bulls 28.25 kg and in heifers 27.18 kg; on day 210, at weaning in bulls 212.31 kg and in heifers 198.04 kg; on day 365, respectively, 328.02 kg and 304.73 kg. … …OnLine Journal of Biological Sciences, Vol. 23, Issue 3 · 7 Jul 2023 · 7,679 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Level of Breeding Value of Cattle of the Auliekol Breed, Calculated by the Blup MethodAnuarbek Temirbekovich Bissembayev, Alzhan Smailuly Shamshidin, Zhanat Maratovich Kasenov et al.Currently, the assessment of the breeding value of livestock provides for new approaches to determine the genetic qualities of animals that sustainably transmit to offspring. This is achieved by using the phenotypic data of the ancestors, the closest lateral relatives, as well as the animals themselves and their descendants, which, according to all canons, is facilitated by the so-called BLUP … …OnLine Journal of Biological Sciences, Vol. 23, Issue 2 · 14 Apr 2023 · 5,258 accessesView PDFCite
Research ArticleOpen accessIn the abstractEstimated Breeding Value of Kazakh White-Headed Cattle BreedAnuarbek Temirb Bissembayev, Dastanbek Asylbekovich Baimukanov, Vladimir Ivanovich Trukhachev et al.The purpose of the study is to establish the estimated breeding value index of Kazakh white-headed cattle by productive indicators. The Estimated Breeding Value (EBV) of the productive indicators of animals of the Kazakh white-headed breed was determined for 2018-2021. The index values were further interpreted as an assessment of the own genetic productivity of each evaluated animal relative to … …American Journal of Animal and Veterinary Sciences, Vol. 18, Issue 2 · 14 Apr 2023 · 6,862 accessesView PDFCite
Research ArticleOpen accessIn the abstractCharacteristics 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