Volume 16, Issue 1 (2021) | American Journal of Animal and Veterinary Sciences

Effect of Repeated Freezing and Thawing on Nguni Sperm Parameters Evaluated by Computer Assisted Sperm Analyzer System

Masindi Lottus Mphaphathi — 2021-01-27

American Journal of Animal and Veterinary Sciences, Published online: 27 January 2021; doi:10.3844/ajavsp.2021.1.6

The 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 ev...

The Role of Oxidative Stress during Pregnancy on Obstetric Pathology Development in High-Yielding Dairy Cows

Inna Ventsova — 2021-01-19

American Journal of Animal and Veterinary Sciences, Published online: 19 January 2021; doi:10.3844/ajavsp.2021.7.14

The study aimed to examine the processes of oxidative stress and their intensity depending on the state of the antioxidant system in dairy cows. The study was conducted in 2018-2019 on the territory o...

Zoo-Technical Features of Tabun Horses in Almaty Region of Republic of Kazakhstan

Shynggys Assilbekov — 2021-01-22

American Journal of Animal and Veterinary Sciences, Published online: 22 January 2021; doi:10.3844/ajavsp.2021.15.22

This work was attended to improve and show the comparative characteristics of exterior features, assessment of the constitutional type of horses, determination of the direction of the productive profi...

Neospora caninum Infection in Cattle and Dogs in Iran: A Systematic Review and Meta-Analysis

Mohammad Jokar — 2021-01-23

American Journal of Animal and Veterinary Sciences, Published online: 23 January 2021; doi:10.3844/ajavsp.2021.23.38

Neosporosis, a parasitic infection caused by Neospora caninum (N. caninum), is one of the main contagious factors that cause reproductive disturbances in cattle and neuromuscular complaints in dogs. T...

Biochemical Indicators and Nutritional Value of Horsemeat Infected by Parascaridosis and Sampled from the Surrounding Areas of Semipalatinsk Nuclear Test Site, Kazakhstan

Shyngys Suleimenov — 2021-02-09

American Journal of Animal and Veterinary Sciences, Published online: 9 February 2021; doi:10.3844/ajavsp.2021.39.47

Due to high prevalence of the Parascaris equorum among horses, the effect of Paracardiosis infestation on nutritional and biological values of meat is required. In an effort to analyze the radionuclid...

Exogenous Progesterone for Offspring Sex Ratio Manipulation in Arabic Chickens (Gallus turcicus) Leading to Increasing Female Chicks Proportion

Iswati — 2021-02-17

American Journal of Animal and Veterinary Sciences, Published online: 17 February 2021; doi:10.3844/ajavsp.2021.48.55

Female birds of egg-laying hens are more valuable than males, because males bird have no commercial value. The opportunity to manipulate offspring sex ratio in poultry has been observed in female bird...

Influence of Different Freezing Curves on the Acrosome Integrity of Male Goat Sperm Cells

Sofia Alexandra Fagundes Lopes — 2021-02-19

American Journal of Animal and Veterinary Sciences, Published online: 19 February 2021; doi:10.3844/ajavsp.2021.56.61

The aim of the present study was to evaluate the effect of three different freezing curves on male goat’s sperm viability and acrosome integrity. Semen was collected on three adult male goats in Feb...

The Influence of Bedding Application in Feedlot Cattle: A Review

Dathan Thomas Smerchek — 2021-02-23

American Journal of Animal and Veterinary Sciences, Published online: 23 February 2021; doi:10.3844/ajavsp.2021.62.70

A sizable portion of cattle on feed in the United States are fed in the Upper Midwest and Northern Plains region where temperatures routinely fall below freezing during late fall, winter and early spr...

Beef Cattle Farm Development Policies to Overcome Beef Distribution Problem in Indonesia: A Literature Review

Basril Basyar — 2021-02-26

American Journal of Animal and Veterinary Sciences, Published online: 26 February 2021; doi:10.3844/ajavsp.2021.71.76

This study aims to formulate policy solutions to the distribution of beef in Indonesia by using a descriptive approach relying on secondary data obtained from various state agencies as well as relevan...

Effect of the Strategic Supplementation for Producing Embryos of Native Hartón del Valle Heifers

Adrian Rolando Riascos-Vallejos — 2021-03-07

American Journal of Animal and Veterinary Sciences, Published online: 7 March 2021; doi:10.3844/ajavsp.2021.77.89

Nutritional imbalances have been confirmed in other breeds, related to energy, proteins and minerals and this affects embryonic development, production of quality. In this regard, the objective of thi...

Biotic and Abiotic Factors of Sperm nDNA Fragmentation in Farm Animals

Baylar Iolchiev — 2021-03-11

American Journal of Animal and Veterinary Sciences, Published online: 11 March 2021; doi:10.3844/ajavsp.2021.90.98

Infertility and subfertility are among the global challenges of our time. Fertility in livestock farming is not only biologically important, it is also economically important. The aim of this study wa...

A Greater dose of Ractopamine Hydrochloride Enhances Feedlot Performance and Impacts Carcass Characteristics of Calf-Fed Holstein Steers

Jerilyn E. Hergenreder — 2021-03-24

American Journal of Animal and Veterinary Sciences, Published online: 24 March 2021; doi:10.3844/ajavsp.2021.99.104

The objective was to evaluate the effects of supplementing ractopamine HCl at the rate of 400 mg steer1 daily in the final 28 d of the feeding period on growth performance and carcass characteristi...