Screening of Hardhenu Crossbred, Sahiwal and Hariana Bulls for Autosomal Recessive Genetic Disorder Bovine Leukocyte Adhesion Deficiency (BLAD)

Abstract

Ankit Magotra

Evaluation of parity and its interaction effect with season of calving, period of calving on production and reproduction traits in Hardhenu (Bos taurus × Bos indicus) dairy cattle

“…The study focused on the Hardhenu cattle, an indigenous crossbred breed resulting from the cross between Bos taurus (exotic) and Bos indicus (indigenous) ancestry (Magotra, Breeding, et al., 2019; Magotra, Gupta, et al., 2019; Pushpa, Magotra, Patil, et al., 2023). The exotic genetic influence, primarily from the Holstein‐Friesian breed, constitutes approximately 62.5% of their genetic makeup (Yadav et al., 2020).…”

“…Genetic factors encompass variations attributed to heredity and the genetic makeup of individuals. In contrast, environmental factors encompass all other sources of variability within and between individuals and are influenced by factors such as climate, management practices, and the overall environment (Anamika et al., 2022; Magotra, Breeding, et al., 2019; Magotra, Gupta, et al., 2019; Ranjan et al., 2018).…”

Estimation of maternal and additive effect on reproduction and productive traits in Hardhenu cattle

“…After 3 months, their diet transitioned to include green fodder, hay and concentrate feed as their rumen developed. Management practices included vaccination against foot and mouth disease, haemorrhagic septicaemia, black quarter and brucellosis, as well as deworming of calves and adult animals (Magotra et al, 2019;Yadav et al, 2023). The cattle were reared at Hisar, which has a subtropical climate and is a semiarid Animals with LMY less than 1000 kg, LL less than 100 days were excluded.…”

“…The global economy depends substantially on the production of cattle, and the sustainability and profitability of the dairy industry are directly impacted by the improvement of production and reproductive traits and variables that influence the health and productivity of cattle (Pushpa et al, 2024). These traits are often negatively correlated, and impacted by a myriad of factors, which can be broadly divided into genetic (heredity and individual's genetic makeup) and environmental components (climate, management strategies and overall surroundings), necessitating identification and consideration in breeding programmes (Magotra et al, 2019;Magotra et al, 2020;Yadav et al, 2021;Kamaldeep Magotra et al, 2021;Pushpa et al, 2024). The demand for premium animal protein products, especially milk, is anticipated to increase significantly due to projections of a global population expansion, highlighting the importance of confronting this challenge (de Almeida, 2018;Magotra et al, 2015Magotra et al, , 2018.…”

Bayesian estimates of genetic effects on calf survival in Hardhenu (Bos taurus × Bos indicus) cattle

“…Hardhenu is a synthetic crossbreed developed at Lala Lajpat Rai University of Veterinary and Animal Sciences (LUVAS), Hisar, Haryana, with 62.5% exotic inheritance of Holstein Friesian (Magotra et al, 2019). It is capable of producing 3350 kg of milk with 3.8% fat in a lactation of 300 days.…”