نتایج جستجو برای: anas platyrhynchos

تعداد نتایج: 1372  

Journal: :Poultry science 2006
C A Yoder J K Graham L A Miller K S Bynum J J Johnston M J Goodall

Nicarbazin (NCZ), a coccidiostat used in the poultry industry, has been developed as a contraceptive for resident Canada geese. We tested the efficacy of NCZ as a contraceptive using mallards (Anas platyrhynchos) as a model for Canada geese. Nicarbazin-treated corn was fed ad libitum for 14 d at 0, 750, 1,000, or 1,500 ppm. Plasma and egg levels of 4,4'-dinitrocarbanilide (DNC), the active anti...

2016
Mohamed El-Naggari Anas-Alwogud Abdelmogheth Hashim Javad Khalfan Al Senaidi Ibtisam El Nour

Pattern of Pediatric Mortality in a Tertiary Hospital in Oman Mohamed El-Naggari, Anas-Alwogud Abdelmogheth, Hashim Javad, Khalfan Al Senaidi, and Ibtisam El Nour Department of Child Health, Sultan Qaboos University, Al-Khod 123, Sultanate of Oman Corresponding author: Dr. Mohamed El-Naggari, Department of Child Health, Sultan Qaboos University, Al-Khod 123, Sultanate of Oman. Tel: +968-9817823...

2011
Jenna E. Achenbach Richard A. Bowen

Waterfowl and shorebirds harbor and shed all hemagglutinin and neuraminidase subtypes of influenza A viruses and interact in nature with a broad range of other avian and mammalian species to which they might transmit such viruses. Estimating the efficiency and importance of such cross-species transmission using epidemiological approaches is difficult. We therefore addressed this question by stu...

Journal: :Journal of theoretical biology 2002
J Cubo D Azagra A Casinos J Castanet

Heterochrony, evolutionary modifications in the rates and/or the timing of development, is widely recognized as an important agent of evolutionary change. In this paper, we are concerned with the detection of this evolutionary mechanism through the analysis of long bone growth. For this, we provide a function sigma (t) for the ontogenetic variation of bone shape by taking the ratio of two Gompe...

Journal: :Brazilian Journal of Biology 2022

Abstract Present study was planned to determine variations in external and internal quality egg parameters of different avian species including ostrich Struthio camelus, ducks Anas platyrhynchos, chicken Gallus gallus, turkeys Meleagris gallopavo grey francolin Francolinus pondicerinus. All the birds were kept under similar rearing conditions. A total 150 eggs collected for each record features...

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