منابع مشابه
Effects of restricted feeding of prepubertal ewe lambs on reproduction and lactation performances over two breeding seasons.
The aim of this study was to determine the effects of restricted feeding before puberty on reproduction, lactation and offspring growth performance in replacement ewe lambs over two breeding seasons. At weaning, 41 Dorset ewe lambs were assigned to one of three diets: an ad libitum control diet with medium-quality forage (MQF; 13.3% crude protein (CP), 1.81 Mcal metabolizable energy per kg, 42....
متن کاملReproductive performance of Suffolk and Suffolk-cross ewes and ewe lambs exposed to vasectomized rams before breeding.
Multiparous Suffolk and Suffolk-cross ewes were randomly allotted to treatments within breed and year to measure effects of ram exposure, during transition from anestrus to breeding activity, on reproductive performance. Treatments were: 1) ewes joined with two mature vasectomized Rambouillet rams for 15 d before breeding (DC), 2) ewes maintained across a net wire fence from two vasectomized ra...
متن کاملSuckling Lambs Meat Quality Influenced by Oil-supplemented Ewe Diet
C. Vieira, T. Manso, R. Bodas, M.T. Díaz, T. Castro, A.R. Mantecon Consejería de Agricultura y Ganadería de Castilla y León. Instituto Tecnológico Agrario. Estación Tecnológica de la Carne. 37770 Guijuelo, Salamanca, Spain ETS Ingenierías Agrarias, Universidad de Valladolid, Avd. Madrid s/n, 34004, Palencia, Spain Instituto de Ganadería de Montaña (CSIC-ULE), 24346 Grulleros, León, Spain 4 Dpto...
متن کاملEffect of early tail-docking on luteinizing hormone pulse frequency in fat-tailed Tuj ewe-lambs
The aim of the study was to investigate the effect of tail-docking on the LH pulse frequency in femaleTuj lambs. Twelve female lambs were assigned into two equal groups. A rubber ring was applied to the baseof the tail for shedding off. Blood samples were collected for 8 h in the 4th and 8th months of age todetermine pulsatile secretion of LH. Starting from the age of 6 months, blood samples we...
متن کاملThe photoneuroendocrine control of seasonal breeding in the ewe.
The major environmental parameter controlling seasonal breeding in ewes is photoperiod. Short days stimulate, and long days inhibit breeding activity. One of the more intriguing enigmas of neuroendocrinology is the endocrine mechanism whereby a mere change in daylength initiates or prevents estrous cycles. Recent experiments have begun to solve this problem by demonstrating that in ewes, photop...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Japanese Journal of Sheep Science
سال: 1968
ISSN: 0389-1305,2186-1013
DOI: 10.11595/jpnjsheepsci1964.1968.30