Advertisement

Topics

The effects of birth rank (single or twin) and dam age on the lifetime productive performance of female dual purpose sheep (Ovis aries) offspring in New Zealand.

08:00 EDT 21st March 2019 | BioPortfolio

Summary of "The effects of birth rank (single or twin) and dam age on the lifetime productive performance of female dual purpose sheep (Ovis aries) offspring in New Zealand."

Greater rates of genetic gain can be achieved by selecting animals born to younger parents. However, little is known about the lifetime performance of dual purpose ewes (Ovis aries) that are born to primiparous ewe lambs (8 to 9 months old at breeding). This experiment investigated the effect of being born from either a ewe lamb or mixed age dam as either a single or twin on the lifetime performance of ewe progeny. Lifetime performance was measured in terms of the life time live weights of the ewes, the weight and number of lambs born and weaned, the efficiency of production (kilograms of lamb weaned / predicted pasture intake (kgDM) of the ewes), and ewe survival. The study followed the lifetime production of 17 single and 41 twin female lambs born to mature ewes (M1 and M2, respectively), and 28 single and 29 twin lambs born to ewe lambs (L1 and L2, respectively). Over their lifetime L2 ewes were lighter (P<0.05) but had similar body condition scores to the other three ewe groups. There was no difference in average progeny weaning weight or total progeny litter weaning weights between groups. The M1 ewes had the greatest longevity (P<0.05) of the four groups. Even though L2 ewes were lighter than the other three groups, this was insufficient to increase their lifetime efficiency of production (kg lamb weaned/predicted pasture consumption), relative to the other groups. These results suggest farmers could select replacements born to ewe lambs without sacrificing animal production.

Affiliation

Journal Details

This article was published in the following journal.

Name: PloS one
ISSN: 1932-6203
Pages: e0214021

Links

DeepDyve research library

PubMed Articles [27331 Associated PubMed Articles listed on BioPortfolio]

Effect of diet and type of pregnancy on plasma metabolic response in sheep and its further effect on lamb performance.

This trial evaluated the individual and interactional effects of diet and type of pregnancy (twin or single) on plasma metabolic response in ewes and their lambs from late pre-partum to late post-part...

The association between inter-twin birth weight discordance and hepatitis C: The United States 2011-2015 twin birth registration data.

Twins with discordant growth have increased risks of perinatal mortality and morbidity. Previous studies have identified a number of risk factors for inter-twin birth weight discordance, yet no study ...

Impact of changes in maternal body composition on birth weight and neonatal fat mass in dichorionic twin pregnancies.

Although the impact of gestational weight gain (GWG) on birth weight in twin pregnancies has been demonstrated, the specific components of GWG have not been delineated for twin gestations. Fetal body ...

Maternal clinical predictors of preterm birth in twin pregnancies: A systematic review involving 2,930,958 twin pregnancies.

In twin pregnancies, which are at high risk of preterm birth, it is not known if maternal clinical characteristics pose additional risks. We undertook a systematic review to assess the risk of both sp...

Prenatal screening for Down syndrome in twin pregnancies: estimates of screening performance based on 61 affected and 7,302 unaffected twin pregnancies.

To determine whether assumptions used in prenatal screening for Down syndrome in twin pregnancies are valid, and derive estimates of risk and screening performance in twin pregnancies using observed d...

Clinical Trials [9845 Associated Clinical Trials listed on BioPortfolio]

The Twin Birth Study: A Trial Comparing Planned Vaginal Birth to Elective Caesarean Section of Twins

For twin pregnancies at 32-38 weeks gestation, where twin A is head down, does a policy of planned caesarean section (CS) lower the likelihood of death or serious illness, during the first...

Effects of ACS in Twin With LPB: Study Protocol for a RCT

This study will be the first study that evaluates the effectiveness of antenatal corticosteroid (ACS) in late preterm twin neonates.

17OHP for Reduction of Neonatal Morbidity Due to Preterm Birth (PTB) in Twin and Triplet Pregnancies

Hypothesis: Among women with twin or triplet pregnancies, weekly injections of 17-alpha-hydroxyprogesterone caproate (17OHP), started before 24 weeks of gestation, will reduce neonatal mo...

Twins Born in Guangzhou

The 2-BIG is a twin birth cohort study located in Guangzhou, China.Its initial aim is to facilitate research on understanding the interplay between genes and environmental factors on disea...

Physical Exam Indicated Cerclage in Twin Gestations

This is a multicenter randomized study designed to determine if physical exam indicated cerclage reduces the incidence of spontaneous preterm birth

Medical and Biotech [MESH] Definitions

Methods of detecting genetic etiology in human traits. The basic premise of twin studies is that monozygotic twins, being formed by the division of a single fertilized ovum, carry identical genes, while dizygotic twins, being formed by the fertilization of two ova by two different spermatozoa, are genetically no more similar than two siblings born after separate pregnancies. (Last, J.M., A Dictionary of Epidemiology, 2d ed)

Passage of blood from one fetus to another via an arteriovenous communication or other shunt, in a monozygotic twin pregnancy. It results in anemia in one twin and polycythemia in the other. (Lee et al., Wintrobe's Clinical Hematology, 9th ed, p737-8)

A performance test based on forced MOTOR ACTIVITY on a rotating rod, usually by a rodent. Parameters include the riding time (seconds) or endurance. Test is used to evaluate balance and coordination of the subjects, particular in experimental animal models for neurological disorders and drug effects.

Either a single or a single functioning kidney due to NEPHRECTOMY, birth defects or other kidney diseases.

A secreted member of the TNF receptor superfamily that negatively regulates osteoclastogenesis. It is a soluble decoy receptor of RANK LIGAND that inhibits both CELL DIFFERENTIATION and function of OSTEOCLASTS by inhibiting the interaction between RANK LIGAND and RECEPTOR ACTIVATOR OF NUCLEAR FACTOR-KAPPA B.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article