نتایج جستجو برای: cows and bull populations

تعداد نتایج: 16856168  

Journal: :Theriogenology 2016
Lif Rødtness Vesterby Knudsen Cecilia Christensen Karstrup Hanne Gervi Pedersen Øystein Angen Jørgen Steen Agerholm Eva Láadal Rasmussen Tim Kåre Jensen Kirstine Klitgaard

Metritis and endometritis commonly occur in dairy cows after calving. Although numerous studies have been performed to identify the causative pathogens, a complete overview has not been done. Metagenomic studies have analyzed the bacterial populations of uterine flush samples from postpartum (pp) dairy cows, but the microbiota in the uterine luminal fluid may differ from the microbiota of the e...

Journal: :iranian journal of applied animal science 2012
h. alaie s.z. mirhoseini m. mehdizadeh s.b. dalirsefat

complex vertebral malformation(cvm) isanautosomal recessivehereditarydisorder caused bya point mutation in position 559 inexon 4 of the slc35a3 gene on chromosome 3 inholstein dairy cattle.this mutationchanges the function of uridine 5-diphosphate-n-acetylglucosamine transporter protein bythe substitution of valine for phenylalanine at position 180 of this protein. the disease causes premature ...

2016
Sandrine I. Duchemin Maria Glantz Dirk-Jan de Koning Marie Paulsson Willem F. Fikse

Non-coagulating (NC) milk, defined as milk not coagulating within 40 min after rennet-addition, can have a negative influence on cheese production. Its prevalence is estimated at 18% in the Swedish Red (SR) cow population. Our study aimed at identifying genomic regions and causal variants associated with NC milk in SR cows, by doing a GWAS using 777k SNP genotypes and using imputed sequences to...

Journal: :Journal of wildlife diseases 2009
Gary Killian Terry J Kreeger Jack Rhyan Kathleen Fagerstone Lowell Miller

Overabundant populations of elk (Cervus elaphus) are a significant concern in some areas of the western United States because of potential ecologic damage and spread of brucellosis to domestic livestock. Brucella abortus is transmitted among elk through direct contact with aborted fetuses, placentas and associated fluids, or postpartum discharge of infected animals. Because transmission of bruc...

Journal: :Animal Bioscience 2021

Objective: The aim of this study was to ascertain the effects adding green tea extract (GTE) skim milk-egg yolk (SM-EY) extender on both quality post-thawed bull semen and pregnancy rates recipient cows.Methods: Twelve ejaculates from four Simmental bulls, aged 3 5 years weighing 900 950 kg, were diluted SM-EY extender, added with 0, 0.05, 0.1, 0.15 mg GTE/100 mL then frozen. After weeks storag...

2017
A. M. Martinez-Ibeas Clare Power Jennifer McClure Riona G. Sayers

Background: BVD and IBR are contagious viral diseases highly prevalent in Irish cattle. Despite their significant reproductive and economic impact very little is known about the BVD and IBR status of stock bulls (a bull used for breeding purposes). There are still a high proportion of dairy farms in Ireland that rely on the use of a bull for breeding cattle and ensuring the fertility of the bul...

Journal: :Bulletin of mathematical biology 2003
A D Barbour Roman Kälin

The typical duration of an epidemic in a sequence of linearly ordered populations shows a surprising nonmonotonic behaviour with respect to population size, which was noted by Swinton (1998) [Bull. Math. Biol., 60, 215-230]. This paper gives the sketch of a proof of the phenomenon.

Journal: :journal of research in medical sciences 0
nader - rahnama associate professor, faculty of physical education and sport sciences, university of isfahan, isfahan, iran abbasali gaeini professor, faculty of physical education and sport sciences, university of tehran, tehran, iran fahimeh kazemi , faculty of physical education and sport sciences, university of tehran, tehran, iran

background: consumption of energy drinks has become widespread among athletes. the effectiveness of red bull and hype energy drinks on selected indices of maximal cardiorespiratory fitness and blood lactate levels in male athletes was examined in this study. methods: ten male student athletes (age: 22.4 ± 2.1 years, height: 180.8 ± 7.7 cm, weight: 74.2 ± 8.5 kg) performed three randomized maxim...

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