Selection Index for Corriedale Yearling Ewes
نویسندگان
چکیده
منابع مشابه
Behavioral and physiological changes during heat stress in Corriedale ewes exposed to water deprivation
This study was conducted to investigate the behavioral and physiological changes of heat stressed Corriedale ewes exposed to water deprivation. Nine Corriedale ewes (average BW = 45 ± 3.7 kg) were individually fed diets based on maintenance requirements in metabolic crates. Ewes were assigned into three groups (9 sheep per treatment) according to a 3 × 3 Latin square design for 3 periods with 2...
متن کاملBreed crosses used in the development of Targhee sheep.
T HE development of the Targhee breed of sheep began in i9=6 when the Bureau of Animal Industry at the U. S. Sheep Experiment Station, Dubois, Idaho mated select Rambouillet rams with select ewes of Corriedale XLincoln-Rambouillet and Lincoln XRambouillet combinations. Descendants of these crosses have been interbred and carefully selected to produce Targhee sheep. Spencer and Stoehr (x94L) hav...
متن کاملEffects of some environmental factors on yearling traits of Columbia and Targhee ewes.
S ELECTION of breeding ewes is often complicated by environmental factors which tend to obscure genetic merit. Correction or adjustment for measurable effects of environmental factors may increase the effectivehess of selection for meat and wool production. These corrections will also be useful in many experimental studies where it is desirable to minimize the complication of environmental effe...
متن کاملProduction of yearling Targhee or Finn-Dorset-Targhee ewes managed as a farm or range flock.
Production data from 681 yearling ewes were evaluated for the effect of ewe breed and management system on fertility, prolificacy, lamb birth weight, lamb survival, lamb weaning weight, ewe fleece weight, and total lamb weight weaned per ewe exposed. Two hundred seven straightbred Targhee (T) and 474 1/4 Finn-1/4 Dorset-1/2 Targhee (FDT) crossbred ewes managed in a range or farm flock system we...
متن کاملIntrauterine bacterial inoculation and level of dietary methionine alter amino acid metabolism in nulliparous yearling ewes.
Using an intrauterine bacterial inoculation method, our objective was to determine the effects of acute sepsis and level of dietary metabolizable Met (MM) on splanchnic metabolism of AA in ewes. Twenty-four nulliparous yearling Rambouillet-cross ewes (initial BW = 65.1 +/- 0.6 kg), surgically fitted with chronic-indwelling catheters in hepatic and portal veins, a mesenteric vein and artery, and...
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ژورنال
عنوان ژورنال: Japanese Journal of Breeding
سال: 1962
ISSN: 0536-3683,2185-291X
DOI: 10.1270/jsbbs1951.12.117