2 edition of Pre- and post-weaning performance of ewes and lambs in fall lambing production systems found in the catalog.
Pre- and post-weaning performance of ewes and lambs in fall lambing production systems
Daniel E. Lucas
Written in English
|Statement||by Daniel E. Lucas.|
|The Physical Object|
|Pagination||viii, 45 leaves, bound :|
|Number of Pages||45|
Vaccinating ewes for diseases at 5 weeks (ewe lambs) and/or 3 weeks (mature ewes) prior to lambing enables antibodies against these specific common diseases to be produced and passed to the lamb. - 6kgDM ewe/day!, with a sward height of cm - If levels fall below this both milk production and ewe LW fall * Ryegrass/ clover is IDEAL but - Herb mix; chicory, plantain, red clover can be used from 10 days pre-lambing to weaning * Wean heavier lambs and ^ survival * Ewes are also heavier.
One way to select for early puberty is to expose ewe lambs for breeding and scan them for pregancy, culling any ewe lambs which fail to become pregnant. High levels of feed pre and post-weaning reduce the age at puberty. Single lambs cycle at a younger age than twin and triplet-born ewe lambs, due to their size advantage. Ewes rebred in the fall had a shorter ram introduction to lambing interval (p lambing rates (p = ); however, the proportion of ewes lambing was not affected by season. The first service lambing rate was lower in ewes continuously suckling lambs in the spring, but not in the fall breeding.
Lamb mortality post-weaning 2% Lambs Marketed per year8 Average Market Lamb Shipping Weight (pounds) lbs Livestock Guardian Dogs (1 per ewes) 3 LGD Mortality Rate % 5 Conception rates used here are typical of those currently being achieved in accelerated lambing flocks 6 Ewe lambs are retained from January and May lambing groups. Ewes that have a body condition score of less than 3 at mating will respond better to flushing. Ewes with body condition scores of 3 and 4 at lambing tend to lose fewer lambs and wean more pounds of lambs than ewes with body condition scores of or less.
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International perspectives in sheep production: differences in systems and welfare risks World sheep numbers and production. There are an estimated million sheep in the world (Morris, ).The major sheep farming areas are located within the latitudes 35–55 degree north in Europe and Asia and between 30 and 45 degree south in South America, Australia and New Zealand Cited by: 4.
Growing great lambs—pre lamb drivers 4 Genetics 4 Lambing date 6 Ewe condition and nutrition 7 Animal health 8 Weather and geography 8 Stocking rate 9 Growing great lambs fom birth to weaning 10 The Opportunity 10 Potential growth rates 10 Importance of the “Two Qs” 11 When to wean 13 Growing great lambs post weaning 14 Lamb growth rates.
Refiq et al. () recorded the data on Turkish Merino (Karacabey Merino) sheep. There were fixed effects due to year of lambing, sex of lamb, type of birth and age of ewe at lambing.
Sex of lamb had significant effect on pre-weaning daily gain. The male lambs were % heavier than female lambs.
Supplementary feeding of Desert ewes at mating time or for 45 days pre-lambing, or both combined, increased lambing and twinning, gave heavier lambs and gave farmers a greater monetary return. The mean estimate of the pre-weaning daily weight gain ( g/d) was greater than that of the post-weaning daily weight gain ( g/d).
The significance of non-genetic factors such as sex, year-season and type of birth of lambs, age at lambing and parity number of ewe on body weights and growth performances of lambs was also examined. This book present the results of productivity and lamb meat production realised in the local sheep pure breed and in crossbreeding systems using the Texel Belgium breed rams, introduced and used.
As expected, D’man ewes gave birth to lambs and weaned lambs more than 1/2-D’man ewes, but when weight of lamb born and weaned per ewe lambed was considered, there was a tendency. Remember booster vaccination pre-lambing. Be prepared for lambing Good preparation reduces losses.
• Employ one experienced lamber for ewes indoors ( outdoors). • Allow one individual pen for ewes indoors. • Organise lambing equipment, spare colostrum supplies, etc.
well in advance. • Keep pens freshly bedded. Ewes rebred in the fall had a shorter ram introduction to lambing interval (p lambing rates (p = ); however, the proportion of ewes lambing. Ewes were mated in the fall to lamb in March. Ewes were randomly assigned to a pasture group or dry lot group after lambing.
The lambs maintained in the dry lot went to West Virginia University after weaning and were fed in an expanded metal floor facility free of parasites. Measurement of Lamb Performance.
To determine the value of pre and post weaning nutrition on puberty age, some hormonal concentrations and tail measures in ewe lambs, a total of 40 clinically health Kurdish female lambs (30± d and weighing ± kg) were randomly allocated to one of two experimental diets in pre-weaning period: high quality diet (HQD, Mcal ME/kg dry matter (DM) and g CP/kg DM).
Lamb survival at birth and to weaning was not different between purebred and crossbred lambs, but pre-weaning lamb loss was higher following July (%; December lambing) than March mating (%; August lambing).
Lamb birth and adjusted d weaning weights were 25 to 30% higher (P<) in crossbred than purebred lambs regardless of mating. A ewe breed × type of birth interaction was detected for lamb birth and weaning weight (P lambs out of Rambouillet ewes were heavier than lambs out of Dorper ewes (P lambs as singles, twins, and triplets.
If breeding as LAMBS ( months old) - get ewes into production earlier ~1 year earlier - shortens generation interval - increases lifetime production - identifies ewes that are more productive - smaller and younger when bred so need better nutrition If to be bred to lamb at months, need high plant nutrition from weaning to breeding.
Ewes and does generally cycle in the fall and lambing/kidding largely still occurs at the same time as most annual spring production programs, but there is a greater instance of individual or smaller groups of lambs or kids born out of season which can make managing and marketing a contemporary group less economical.
production an in all environments. The most important measures of flock’s over all productive performance is the number of lambs waned per ewe exposed, which is the product of the production of ewes lambing (fertility), litter size at birth (prolificacy) and survival rate of lambs born to weaning (Lee and Atkins, ).
We feed ewes in this group either good quality hay or hay-crop silage free choice and grain at the rate of 1 lb per day for each lamb. That is, ewes with one lamb get 1 lb and ewes with twins 2 lb. Ewes with triplets or even quads require more. Artificial rearing is necessary for excess lambs from the very prolific ewes.
In a pasture lambing system an estimated $ per ewe per year was saved through feed costs alone, as compared to more intensive shed lambing systems. After weaning Suffolk sired lambs gained faster (P lambs.
Post-weaning average daily gains were greater (P. Production Records Certain basic records should be kept to monitor flock performance. These include sire and dam, lambing date, sex of lambs, and ID of lambs. You may also want to record comments about lambing ease, the ewe's mothering ability, and the vigor of the lambs.
Lambs are usually marketed earlier in the year, when prices may be higher. However, early weaning is more stressful to both the ewe and lambs. Ewes are more prone to mastitis because they are still producing milk when their lambs are removed.
Lambs have a reduction in their food supply. This proposal is to investigate the feasibility of an out-of-season breeding system for organic fall lamb production.
Currently, there are not enough organic producers to supply the increasing demands, especially for organic meats in the US. And there has been little investigative research and publication on out-of-season organic lamb production in Missouri and the region.Tamarack Lamb & Wool added the Booroola FecB gene to Dorset ewes in through selective crossbreeding, resulting in a lambing rate of to % in ewes that carry the FecB gene and an overall flock average of around % (including non booroola ewes) with a typical lamb mortality of 15%.
Previously a fall and winter lambing flock, the.Dorper and Rambouillet ram lambs were evaluated for post-weaning growth. Lambs were weaned at approximately 90 days of age and weaning weights were recorded.
Ram lambs were fed in a feedlot until reaching target market weights. Ewes were mated in the fall of to produce purebred lambs .