3 edition of Studies on the breeding performance of ewes. found in the catalog.
Studies on the breeding performance of ewes.
R. B. Kelley
|Other titles||Breeding performance of ewes.|
|LC Classifications||SF376 .K43|
|The Physical Object|
|Number of Pages||28|
|LC Control Number||47027977|
FEEDING EWES BETTER FOR INCREASED PRODUCTION AND PROFIT Dr. Dan Morrical Department of Animal Science Iowa State University, Ames, Iowa This factor is affected by the length of the breeding season and production system (once a year lamb- multiple studies have shown improved lamb performance and livability too much higher E feeding File Size: KB. The ultimate goal of plant breeding is to improve crop performance for traits or defined characteristics, and this paper outlines current practices and future developments--homozygous lines, phenotyping, hybridization, and many other scientific innovations. In our increasingly connected world, the process also includes computers, big data, and.
Selecting breeding stock - ewes Only fit, healthy ewes that are good examples of their breed / type should be put to the tup. If a ewe has lambed previously, then previous lambing performance should also be taken into consideration. Breeding ewe lambs. Ewe lambs that breed and lamb as yearlings generally have a greater lifetime production than ewes that have their that first lamb as 2 year olds. Since the onset of puberty depends largely upon body weight, ewe lambs should be provided adequate levels of nutrition to reach at least two-thirds of mature weight before breeding.
for the breeding of ewe hoggets to occur in early – to mid-April. The introduction of vascectomised rams (teasers) for a period of 17 days immediately prior to ewe hogget breeding has consistently been shown to increase the proportion of hoggets bred in the first 17 days of . Managing Your Ewe sheep raising and farming book uses Diagnostic Check Sheet, Symptom Flow Charts and Written Text to solve ewe problems. Each Written Text section has 3 parts - Symptoms, Treatment, and.
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Sheep Breeding, Second Edition covers sheep breeding in its widest context through a collection of papers about sheep breeding from experts in the field across the globe.
The book incorporates sections composed of general review articles and important research findings on the structures and objectives of national sheep industries from many of. Sheep Breeding, Second Edition covers sheep breeding in its widest context through a collection of papers about sheep breeding from experts in the field across the globe.
The book incorporates sections composed of general review articles and important research findings on the structures and objectives of national sheep industries from many of Book Edition: 2. Effect of age at first joining on the performance of ewes lambing as 2 years of age.
Whilst this study is in its infancy half of the ewes in the flock are now years of age. Therefore these ewes have lambed at two years of age, half of which were joined as ewe lambs. The following review is in five parts. Firstly, it compares the reported differences in reproductive performance between ewe lambs and mature ewes.
Secondly, it outlines the known effects of ewe lamb breeding on lifetime performance. Thirdly, it discusses factors affecting the success of breeding ewe lambs on the weaning of their by: Pre-Breeding Management of Rams and Ewes David C. Van Metre, DVM, DACVIM Extension Veterinarian, Colorado State University The pre-breeding period is defined as the week period prior to the first day that rams are turned out with the ewes.
Although it File Size: 18KB. Effects of breed and age on the performance of crossbred hill ewes sourced from Scottish Blackface dams - Volume 5 Issue 3 - R. Annett, A. Carson, Cited by: Ideal breeding ewe: Possess an abundance of scale Bigger, longer, heavy-boned sheep are preferred Long, level topline High volume or capacity:File Size: 1MB.
A flock’s physical performance significantly affects profitability, either through reduced input costs or increased output.
Both breeding potential and flock management affect performance. Maternal breeding strategies are complex.A breeding ewe’s ideal genetic makeup will depend on far more traits than are required in a slaughter lamb File Size: 2MB.
In summary, a better reproductive performance and lamb growth rate in CAM flocks may be achieved by the selection of breeding ewes from ewes weighing more than 60 kg.
View Show abstract. How to target appropriate treatment to each ewe in the few months prior to breeding. Irish Farmers Journal livestock specialist Darren Carty gave a. Weaning rate was affected (pewe`s age.
breeding ewe lambs include increasing lamb carcass output during the ewe’s lifetime, and thus overall efficiency, and speeding up genetic gain due to a reduction in the average generation interval.
Finally, ewes that lamb as one year olds are better mothers at the 2-year old lambing than when lambing for the first time as 2-year olds. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.
ewes, and ram breeding performance data were recorded. For the individual tests, individual rams were penned with three unrestrained estrual ewes and breeding data were recorded. Chronically ovariectomized ewes were estrus-synchronized using pessaries containing 60mg of 6 -methyl -hydroxyprogesterone acetate (Veramix, Pﬁzer, Orangeville, ON).Cited by: 8.
The reproductive performance of the various ewe types is shown in Table 1. The fertility of young Blackbelly x Dorset crossbred ewes in November breeding averaged 92% and was similar to that of Finnsheep ewes.
However, in older ewes, fertility of Blackbelly x. (book values). However, when offered in diets based on grass silage, individual feedstuffs have different effects on digestion of the silage component of the diet. As most ewes that are housed are offered grass silage based diets it is necessary to use data from studies in which grass silage was offered to evaluate the value of the feed Size: 47KB.
Present studies are concerned with factors associated with variation in reproductive performance and milk production. Dr R. Gunn graduated from Edinburgh University with a (Agriculture) inHonours in Animal Husbandry in and a Ph.D. in Cited by: 9. A breeding soundness exam evaluates the ram's breeding potential and includes a physical exam and semen test.
Ideally, a serving capacity is included. A serving capacity test evaluates a ram's desire to mate with ewes. Some studies have found that more than 10 percent of rams are homosexual and will not mate with ewes. In Part 2, Tess goes over the qualities of a good breeding ewe. Tess presents me with a group of ewes and has me select one ewe to be bred to her ram based on the criteria she outlines.
Studies on the breeding season and reproduction of the ewe Part I. The breeding season in different environments Part II. The breeding season in one locality - Volume 42 Issue 3 - E. HafezCited by:. Ewes were considered cyclic if P4 levels were higher than.5 ng/ml.
Ultrasound readings were recorded 60d post breeding by a licensed veterinarian to determine pregnancy rates. Data were analyzed for treatment effects by analysis of variance (Steel and Torrie, ) .The sheep is a seasonal breeder in the UK, and the main factor influencing when breeding will occur is the proportion of hours of daylight to dark photoperiod.
At the base of the brain is the pineal gland, which starts producing the hormone called melatonin as soon as it .5. In the UK inthere were million breeding ewes and million lambs, with average flock size of breeding ewes3.
Nine percent of flocks had more than ewes and ~ 50% of ewes were in flocks with more than ewes. Compared withthe number of ewes had declined by million and the average flock size had decreased by File Size: KB.