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24 results for “Birth Rate”
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Research ArticleOpen accessIn the keywordsProduction 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 abstractPostnatal Muscle Growth and Allometry in Anatomical Regions of Russian Black-Pied Heifers and their Crosses With Hereford and Charolais Under Intensive RearingIvan Petrovich Prokhorov, Grigorii Sergeyevich Shekhovtsev, Yulia Vasilevna ShoshinaCrossbreeding dairy cattle with specialized beef breeds is an effective strategy to increase beef production, yet data on muscle growth patterns in crossbred heifers remain limited. This study aimed to evaluate the growth intensity and redistribution of muscle mass in anatomical regions of carcasses in Russian Black-Pied heifers and their crosses with Hereford and Charolais breeds. A scientific experiment was … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 2 · 10 Aug 2026 · 920 accessesView PDFCite
Research ArticleOpen accessIn the abstractCharacterization of the Consanguinity in the Moroccan Population of DoukkalaAbderrazak El Khair, Noura Dahbi, Khadija Cheffi et al.Consanguinity, or the practice of marrying close relatives, is a prevalent phenomenon in many parts of the world, including North Africa. It seems to offer psychological, social, economic, and cultural advantages for couples and their families. In Morocco, the situation of this marital behavior is far from being closely defined. The objective of this research endeavor is to furnish a … …Journal of Social Sciences, Vol. 19, Issue 1 · 26 Apr 2023 · 7,863 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Plant-Based Whole Milk Substitute on Calves' Growth RateKulbaram Bayazitova, Ayaz Ramazanov, Tleubergen Bayazitov et al.One of the tasks of animal husbandry is the development of methods for rearing young animals to obtain healthy calves with specified indicators of productivity and early insemination. The purpose of the study is to evaluate the effect of a plant based whole milk substitute on the growth rate of calves. For the study, three groups of calves of eight … …OnLine Journal of Biological Sciences, Vol. 23, Issue 2 · 21 Apr 2023 · 5,171 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Semen on the Embryo Productivity of Donor Cows and the Development of Transplant CalvesBolatbek Ateikhan, Toktar Karibaevich Bexeitov, Talgat Kozybakovich Seiteuov et al.In animal husbandry, more heifers are requiredfor the expanded reproduction of the herd or milk, and more bulls are needed toobtain meat. One of the effective ways to artificially regulate the secondary(at birth) sex ratio is the technology of sexed semen. In this connection, thepurpose of this study was to study the effect of sexed and native semen on theembryonic … …OnLine Journal of Biological Sciences, Vol. 22, Issue 3 · 6 Sep 2022 · 5,430 accessesView PDFCite
Research ArticleOpen accessIn the abstractDetermination of Diplotypes Associated with Meat Productivity in Cattle Breeds Common in the Territory of the Republic of KazakhstanAskar Mirzahmetovich Nametov, Indira Saltanovna Beishova, Alena Valentinovna Belaya et al.Technologies for genetic labeling of economically useful traits using polymorphic variants of genes that control the rate of growth and development of animals make it possible to assess the genetic potential of an animal immediately after birth, which significantly reduces time and financial costs. This study aimed to identify paired combinations of the genes growth hormone, growth hormone receptor, and … …OnLine Journal of Biological Sciences, Vol. 22, Issue 3 · 17 Aug 2022 · 6,187 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Success of Double Dose Artificial Insemination at Different Times in Ongole Crossbred CattleAulia Puspita Anugra Yekti, Rizki Prafitri, Kuswati et al.Artificial insemination technology has been proved to increase cattle productivity. This research aims to evaluate the success rate of double-dose artificial insemination at different times in Ongole crossbred cattle. This research was done in cattle household farms in Senggreng Village, Sumber Pucung District, Malang Regency, East Java, Indonesia. Fifty cattle involved randomly in this research met the criteria; Ongole crossbred, … …American Journal of Animal and Veterinary Sciences, Vol. 17, Issue 1 · 10 Feb 2022 · 7,030 accessesView PDFCite
Research ArticleOpen accessIn the abstractPerinatal Cardiovascular Evaluation in Dorper Sheep Echocardiographic Description and Behavior of the Heart Rate Variability on the FieldAmanda Sarita Cruz Aleixo, Mayra de Castro Ferreira Lima, Ana Luísa Holanda de Albuquerque et al.The heart is innervated by the autonomic nervous system, with a predominance of sympathetic and parasympathetic activity associated, respectively, with increases and decreases in the heart rate, as illustrated by the Heart Rate Variability (HRV). Pregnancy induces significant changes in the maternal cardiovascular and hemodynamic systems. This study aimed at evaluating changes in the clinical and echocardiographic parameters of pregnant … …American Journal of Animal and Veterinary Sciences, Vol. 16, Issue 4 · 3 Nov 2021 · 6,518 accessesView PDFCite
Research ArticleOpen accessIn the abstractControlling Chaos of the Ricker Population Model by OGY MethodGuo FengThe chaotic dynamics of the Ricker mapping are studied. Controlling chaos of the Ricker population model is searched by OGY control method. The dynamic behavior in the Ricker mapping is very complex in different values of a. When the value of a is changed from 0.455 to 90, the mapping goes through doubling bifurcation to Neimark-Sacker bifurcation. Several strange attractors … …American Journal of Biochemistry and Biotechnology, Vol. 16, Issue 3 · 8 Sep 2020 · 6,217 accessesView PDFCite
Literature ReviewOpen accessIn the abstractCauses of Early Marriage and Its Effect on Reproductive Health of Young Mothers in BangladeshMd. Ruhul Kabir, Susmita Ghosh, Asma ShawlyThe ubiquitous nature of early marriage which practiced across all background and social divides in Bangladesh causing a lot of concerns as according to UNICEF report on "The state of world's children 2017" Bangladesh has the fourth highest prevalence rate of child marriage in the world (59% marriage of women is happened before the age of 18 years). Poverty and … …American Journal of Applied Sciences, Vol. 16, Issue 9 · 28 Nov 2019 · 11,746 accessesView PDFCite