Comparison of five crossbreeding types involving Timahdit, D’man and improved terminal sire breeds of sheep: ewe reproduction, lamb survival and growth performance

2000 ◽  
Vol 71 (3) ◽  
pp. 435-441 ◽  
Author(s):  
M. El Fadili ◽  
C. Michaux ◽  
J. Detilleux ◽  
P. L. Leroy
Keyword(s):  
Growth Traits ◽  
Survival Rates ◽  
The Other ◽  
Favourable Effect ◽  
Production Traits ◽  
Genetic Types ◽  
Unfavourable Effect ◽  
Survival And Growth ◽  
Lamb Survival ◽  
Terminal Sire

AbstractA crossbreeding experiment involving Timahdit (T), D'man (D) and improved sire breeds (M) was conducted to compare lamb production in five crossbreeding types: D ✕ D, T ✕ T, D ✕ T (DT), M ✕ T, and M ✕ DT lambs. Reproductive and production traits were analysed in 1187 litters, 1586 lambs born and 1346 lambs weaned, progeny of 605 ewes. Effects of crossbreeding type, year of birth, sex of lamb, age of dam, and type of birth were significant on the majority of traits studied. The D ✕ D and M ✕ DT crossbreeding system showed the highest litter sizes at lambing and at weaning with respective values in D ✕ D (2·17, 1·34) and M ✕ DT (1·72, 1·39). Ewes bearing the M ✕ DT cross lambs showed the highest (P < 0·05) litter weight at weaning (28·28 kg) followed by those with M ✕ T (23·14 kg), and D ✕ D (22·53 kg) lambs. M ✕ DT and M ✕ T lambs were heavier and grew faster than the other lambs. On the other hand, lamb survival rates and growth traits were the lowest in D ✕ D but those in T ✕ T and D ✕ T genetic types of lamb were intermediate. Results showed that D as a dam breed had a favourable effect on litter size (P < 0·01) but unfavourable effect on lamb survival and birth weight. The reproductive performance of DT crossbred ewes, due to their high prolificacy and lamb survival, associated with the favourable effect of an improved terminal sire (M) for growth traits, indicated that the three breed cross (M ✕ DT) could enhance lamb production in Morocco.

scholarly journals Some reproductive and growth traits of crossbred genotypes produced by crossing local sheep breeds of Kivircik x White Karaman and Chios x White Karaman in steppe conditions

2006 ◽  
Vol 49 (1) ◽  
pp. 55-63 ◽  
Author(s):  
N. Unal ◽  
H. Akcapinar ◽  
F. Atasoy ◽  
M. Aytac
Keyword(s):  
Birth Weight ◽  
Survival Rate ◽  
Reproductive Performance ◽  
Mediterranean Climate ◽  
Growth Traits ◽  
Survival Rates ◽  
Production Traits ◽  
Climate Conditions ◽  
Sheep Breeds ◽  
Survival And Growth

Abstract. The aim of this study was to investigate some production traits of crossbred genotypes produced for lamb production by crossing local sheep breeds of Kivircik (K) x White Karaman (W) and Chios (C) x White Karaman in steppe conditions. W breed is raised in steppe conditions while K and C breeds are raised in Mediterranean climate conditions in Turkey. A total of 340 ewes was used through 3 years. The litter size for W, KWF1 and CWF1 ewes were 1.26, 1.19 and 1.52 (P<0.05), respectively. The least squares means of W, KW F2, KW B1, CW F2 and CW B1 lambs were 91.2, 95.7, 95.6, 87.3 and 94.2 % for survival rate at weaning (90 days); 4.4, 4.3, 4.1, 4.2 and 4.1 kg for birth weight; 21.1, 20.3, 19.6, 20.3 and 19.9 kg for weaning weight; 31.9, 29.4, 30.3, 30.5 and 30.1 kg for 180 day weight, respectively. The differences among genotypes for survival rates and growth performance of lambs were not statistically significant (P>0.05). The results indicated that Chios crossbred ewes had the highest reproductive performance while all genotypes had similar performance in terms of survival and growth of lambs in steppe conditions.

Performance of crossbred progeny of Trangie Fertility Merino and Booroola Merino rams and Poll Dorset ewes. 1. Lamb birth weight, survival and growth

1995 ◽  
Vol 35 (8) ◽  
pp. 1069 ◽  
Author(s):  
DG Hall ◽  
NM Fogarty ◽  
AR Gilmour
Keyword(s):  
Growth Rate ◽  
Birth Weight ◽  
Environmental Effects ◽  
Growth Rates ◽  
Survival Rates ◽  
Age And Growth ◽  
Weaning Weight ◽  
Survival And Growth ◽  
The Common ◽  
Lamb Survival

Merino rams of the Trangie Fertility and Booroola strains were joined to Poll Dorset ewes in single sire mating groups over 3 years. Forty sires produced a total of 1250 lambs in 885 litters from 451 ewes. Lamb birth weight averaged 4.1 kg, 80.8% of lambs survived to 3 days of age and growth rates to weaning (mean 93 days) averaged 289 g/day. Lambs with Trangie Fertility sires grew 15 g/day faster and were 1.3 kg heavier at weaning than those lambs with Booroola sires (P<0.001). There were no effects of sire strain on birth weight or lamb survival. Birth weight increased with dam liveweight in mid-pregnancy (P<0.001), and weaning weight and growth rate increased with dam liveweight at joining (P<0.001). Survival of lambs was predominantly a function of birth weight. Lambs weighing 4 kg at birth from primiparous dams had survival rates of 76% compared with 88% for lambs from multiparous dams (P<0.01). No lamb under 2.0 or over 6.3 kg survived, and 48% of deaths occurred within 1 day of birth. Dystocia, particularly of heavy, single-born lambs, caused 53% of observed lamb deaths. For the traits birth weight, lamb survival, weaning weight and growth rate, the direct heritabilities were 0.24 � 0.10, 0.05 � 0.05, 0.19 � 0.10 and 0.12 � 0.08 respectively; the corresponding maternal heritabilities were 0.08 � 0.05, 0.05 � 0.04, 0.05 � 0.05 and 0.07 � 0.05 respectively; and the common environmental effects among litter mates (c2) were 0.57 � 0.08, 0.47 � 0.08, 0.15 � 0.08 and 0.13 � 0.08 respectively.

Estimates of combining abilities and maternal influence in crosses between Merino, Ossimi and Barki sheep

1972 ◽  
Vol 15 (1) ◽  
pp. 47-52 ◽  
Author(s):  
E. Salah E. Galal ◽  
A. Aboul-Naga ◽  
E. A. Eltawil ◽  
E. S. Khishin
Keyword(s):  
Birth Weight ◽  
Combining Ability ◽  
General Combining Ability ◽  
The Other ◽  
Maternal Influence ◽  
Production Traits ◽  
Body Weights ◽  
Lamb Survival ◽  
Fleece Weight ◽  
Staple Length

SUMMARYA total of 523 lambing records were used to study general combining ability (g.c.a.), maternal ability and specific combining ability (s.c.a.) for three breeds of sheep, the native Ossimi and Barki and the Fleisch Merino. All possible combinations along with the pure breeds were represented. Traits studied were: birth, weaning (4-months) and yearling body weights; lamb survival at weaning; fleece weight and staple length.Ossimi showed the highest g.c.a. estimates for all traits except birth weight and fleece weight where Merino was the best, and survival where Barki was the best. Barki showed the worst g.c.a. in all traits except survival and staple length for which Merino had the lowest estimates.Barki exhibited the best maternal ability in weaning and yearling body weights and lamb survival, while Ossimi was best in the other traits. Merino was consistently worst in maternal ability. The two native breeds interacted more favourably with each other than with Merino in lamb production traits. Among the purebred lambs, the Ossimis performed the best in all traits except fleece weight where they were excelled by the Merinos. It was concluded that for marketing weights (i.e. weaning and yearling) and especially when viewed with respect to survival, the Ossimi × Barki cross offers the highest production; while for fleece weight the Merino × Ossimi is the best.

scholarly journals Effects of creep feeding and its interactions with other factors on the performance of meat goat kids and dams when managed on pasture

2019 ◽  
Vol 3 (4) ◽  
pp. 1466-1474
Author(s):  
Emily G Hayes ◽  
Raquel V Lourençon ◽  
Richard Browning
Keyword(s):  
Growth Traits ◽  
Survival Rates ◽  
Influential Factors ◽  
Daily Weight Gain ◽  
Litter Type ◽  
Financial Returns ◽  
Creep Feeding ◽  
Creep Feed ◽  
Important Interaction ◽  
Meat Goat

Abstract Creep feeding and its possible interactions with other influential factors (genetics, litter type, and sex) for weaning traits were studied in meat goat kids and their dams. Kids across 3 yr were creep fed (254 kids; 5 pens) or not creep fed (255 kids; 5 pens) from 30 to 90 d of age. Creep-fed kids had higher (P ≤ 0.05) preweaning average daily weight gain and weaning weights (113.1 ± 13.0 g/d; 15.0 ± 0.8 kg) than kids not creep fed (99.8 ± 13.1 g/d; 14.0 ± 0.8 kg). However, financial returns were not higher (P &gt; 0.05) for creep-fed kids compared with kids not creep fed. There was no difference (P &gt; 0.05) in kid conformation score or survival rates between the treatment groups. The only important interaction among kid traits was treatment × litter type (P &lt; 0.05) for FAMACHA scores. Within noncreep pens, single kids had lower (better; P &lt; 0.05) FAMACHA scores (2.9 ± 0.3) than twin kids (3.9 ± 0.3). There was no litter-type effect on FAMACHA scores for kids within the creep feed pens. Dams of the creep-fed (n = 175) and noncreep (n = 178) kids were also evaluated. Treatment did not affect (P &gt; 0.05) litter weights, dam weight change, gross revenue for weaned litters, or fecal egg counts. Treatment interacted with litter type (P &lt; 0.05) to effect packed cell volume (PCV). In the noncreep group, dams raising singles had higher (better; P &lt; 0.05) PCV (18.7 ± 1.3%) than dams rearing twin kids (15.7 ± 1.3%). The litter-type effect on dam PCV was not evident (P &gt; 0.05) in the creep-fed group. Creep feeding improved some kid growth traits but did not improve dam traits or financial returns. Interactions of creep treatment with other factors were minimal for doe-kid traits.

scholarly journals Mapping of quantitative trait loci influencing daily body weight gain (DBWG) on chromosome 6 in German Holstein population

2006 ◽  
Vol 22 (1-2) ◽  
pp. 35-46 ◽  
Author(s):  
M. Reißmann ◽  
P. Reinecke ◽  
U. Müller ◽  
S. Abdel-Rahman
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Fine Mapping ◽  
Marker Assisted Selection ◽  
Growth Traits ◽  
Body Weight Gain ◽  
Chromosome 6 ◽  
Production Traits ◽  
Daily Body Weight ◽  
Holstein Population

Twelve microsatellite markers on chromosome 6 were analyzed in German Holstein population to detect and locate QTL affecting daily body weight gain (DBWG). The results indicate promising location for QTL controlling daily body weight gain trait on chromosome 6. Where, three markers BMS2508 BM3026 and TGLA37 at three different positions in a distance 15.2 cM on BTA6 were associated with significant effects for daily body weight gain trait (DBWG). Comparison between this finding and previously identified QTL support the location of a QTL for growth traits on chromosome 6, where a significant QTL for birth and yearling weight was previously identified on chromosome 6 tightly close to marker BM3026. Finding from this study could be used in subsequent fine-mapping work and applied to marker-assisted selection (MAS) of production traits.

scholarly journals Analisis Dampak Impor Cina terhadap Kebertahanan dan Pertumbuhan Industri Tekstil dan Produk Tekstil Indonesia

2012 ◽  
Vol 13 (1) ◽  
pp. 90-108
Author(s):  
Laela Dika Wulandari
Keyword(s):  
Regression Model ◽  
Firm Growth ◽  
Positive Impact ◽  
External Factors ◽  
The Other ◽  
Probit Regression ◽  
Survival And Growth ◽  
Internal And External Factors ◽  
The Impact ◽  
Test Result

AbstractWe try to analyze the impact of Chinese Textile and Garment (T&G) imports, and the internal and external factors to the firm survival and growth of T&G industry in Indonesia, for the period study of 2002 to 2007. Probit regression model is used to analyze the impact of Chinese imports to the survival of firm, while OLS regression model is used to analyze its growth. It shows that the ability of firms' survival is influenced by the internal and external factors. The Chinese imports give positive impact to the firms' survival ability. On the other hand, firm's growth is only affected by its internal characteristics, while the impact of Chinese imports is proven not significant. The Heckman test result stated that there are no correlation between firms' ability to survive and the firm growth behavior.Keywords: Growth, Survival, Chinese Imports, Textile, Indonesian Textile and Garment IndustryAbstrakStudi ini menganalisis dampak dari penetrasi impor TPT Cina, faktor internal, serta faktor eksternal terhadap kebertahanan dan pertumbuhan perusahaan dalam industri TPT Indonesia periode tahun 2002-2007. Metode probit regression digunakan untuk mengetahui dampak impor Cina terhadap kebertahanan perusahaan, sementara regresi linear sederhana (OLS) digunakan untuk menganalisis pertumbuhannya. Ditemukan bahwa kebertahanan perusahaan dipengaruhi oleh karakteristik internal dan eksternal, serta impor Cina yang memberikan dampak positif. Sementara pertumbuhan perusahaan hanya dipengaruhi oleh faktor internal, di mana impor Cina tidak memberikan dampak signikan. Hasil pengujian Heckman menyatakan tidak ada indikasi hubungan antara kebertahanan perusahaan dengan perilaku pertumbuhannya.Kata kunci: Pertumbuhan, Kebertahanan, Impor Cina, Tekstil, Industri Tekstil dan Produk Tekstil Indonesia

The production characteristics of the indigenous Imroz and Kivircik sheep breeds in Turkey

2004 ◽  
Vol 34 ◽  
pp. 57-66 ◽  
Author(s):  
A. Yilmaz ◽  
M. Ozcan ◽  
B. Ekiz ◽  
A. Ceyhan ◽  
A. Altine
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Milk Production ◽  
Growth Rates ◽  
Survival Rates ◽  
Growth Characteristics ◽  
Marmara Region ◽  
Sheep Breeds ◽  
Survival And Growth ◽  
Production Characteristics

SummaryThis study was carried out to investigate the fertility, milk production and body weight of ewes and the survival and growth characteristics of lambs of the indigenous Imroz and Kivircik sheep breeds. The Imroz and Kivircik sheep breeds are included among the genetic resources in the project for the conservation of the indigenous breeds in Turkey.Conception rates for Imroz and Kivircik ewes were 57.6% and 81.7% respectively, litter sizes were 1.2 and 1.2 respectively, milk yields were 89 kg and 62 kg respectively and average live weights (2–7 years of age) were 43 kg and 55 kg, respectively. Imroz and Kivircik lambs had survival rates at weaning (90th day) of 98% and 96%, birth weights of 3.3 kg and 4.1 kg and weaning weights of 19.8 kg and 28.0 kg, respectively.The results showed that the Kivircik sheep were heavier and the lambs had a better growth rate until weaning than the Imroz breed. However, the milk production of the Imroz ewes was higher than that of Kivircik. The lambs of both breeds had a satisfactory survival and growth rates until weaning and these results might be regarded as a desired adaptation of the Imroz and Kivircik lambs to the environmental conditions of the Marmara Region.

Performance-Based Outcomes After Anterior Cruciate Ligament Reconstruction in Professional Athletes Differ Between Sports

2017 ◽  
Vol 45 (10) ◽  
pp. 2226-2232 ◽  
Author(s):  
Harry T. Mai ◽  
Danielle S. Chun ◽  
Andrew D. Schneider ◽  
Brandon J. Erickson ◽  
Ryan D. Freshman ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
National Football League ◽  
Cruciate Ligament ◽  
Survival Rates ◽  
The Other ◽  
Return To Play ◽  
Professional Athletes ◽  
Level Of Evidence ◽  
Performance Statistics ◽  
Anterior Cruciate

Background: Excellent outcomes have been reported for anterior cruciate ligament (ACL) reconstruction (ACLR) in professional athletes in a number of different sports. However, no study has directly compared these outcomes between sports. Purpose: To determine if differences in performance-based outcomes exist after ACLR between professional athletes of each sport. Study Design: Cohort study; Level of evidence, 3. Methods: National Football League (NFL), National Basketball Association (NBA), National Hockey League (NHL), and Major League Baseball (MLB) athletes undergoing primary ACLR for an acute rupture were identified through an established protocol of injury reports and public archives. Sport-specific performance statistics were collected before and after surgery for each athlete. Return to play (RTP) was defined as a successful return to the active roster for at least 1 regular-season game after ACLR. Results: Of 344 professional athletes who met the inclusion criteria, a total of 298 (86.6%) returned to play. NHL players had a significantly higher rate of RTP (95.8% vs 83.4%, respectively; P = .04) and a shorter recovery time (258 ± 110 days vs 367 ± 268 days, respectively; P < .001) than athletes in all the other sports. NFL athletes experienced significantly shorter careers postoperatively than players in all the other sports (2.1 vs 3.2 years, respectively; P < .001). All athletes played fewer games ( P ≤ .02) 1 season postoperatively, while those in the NFL had the lowest rate of active players 2 and 3 seasons postoperatively (60%; P = .002). NBA and NFL players showed decreased performance at season 1 after ACLR ( P ≤ .001). NFL players continued to have lower performance at seasons 2 and 3 ( P = .002), while NBA players recovered to baseline performance. Conclusion: The data indicate that NFL athletes fare the worst after ACLR with the lowest survival rate, shortest postoperative career length, and sustained decreases in performance. NHL athletes fare the best with the highest rates of RTP, highest survival rates, longest postoperative career lengths, and no significant changes in performance. The unique physical demand that each sport requires is likely one of the explanations for these differences in outcomes.

Genetic parameters for daily live-weight gain, live fleshiness and bone thinness in station-tested Piemontese young bulls

2001 ◽  
Vol 72 (3) ◽  
pp. 449-456 ◽  
Author(s):  
A. Albera ◽  
R. Mantovani ◽  
G. Bittante ◽  
A. F. Groen ◽  
P. Carnier
Keyword(s):  
Weight Gain ◽  
Genetic Parameters ◽  
Growth Traits ◽  
Genetic Correlations ◽  
Live Weight ◽  
Adaptation Period ◽  
Production Traits ◽  
Multiple Trait ◽  
Live Weight Gain ◽  
Total Gain

AbstractEstimates of genetic parameters for beef production traits were obtained for Piemontese cattle. Data were from 988 young bulls station-tested from 1989 till 1998. Bulls entered the station at 6 to 8 weeks of age and, after an adaptation period of 3 months, were tested for growth, live fleshiness and bone thinness. Length of test was 196 days. Growth traits considered were gain at farm, gain during the adaptation period, gain on test and total gain at the station. Six different fleshiness traits and bone thinness were scored on live animals at the end of the test using a linear system. Live evaluations of fleshiness were adjusted for the weight at scoring in order to provide an assessment of conformation independent of body size. Genetic parameters were estimated using animal models. Heritability of live-weight gain ranged from 0·20 in the adaptation period to 0·60 for total gain at the station. Genetic correlations between gains at station in different periods were high (from 0·63 to 0·97). Residual correlation between gain during the adaptation period and gain during test was negative, probably due to the occurrence of compensatory growth of the animals.Live fleshiness traits and bone thinness were of moderate to high heritability (from 0·34 to 0·55) and highly correlated indicating that heavy muscled bulls also have thin bones. Accuracy of breeding values and therefore response to selection were improved by multiple trait analysis of the live fleshiness traits and bone thinness. Overall weight gain at the station had a moderate negative genetic correlation with all live fleshiness traits and bone thinness (from –0·11 to –0·39).

PSXII-29 Evaluation of Barbados Blackbelly and St. Croix sheep under accelerated lambing using purebred and terminal sire mating: Lamb survival and body weight

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 488-489
Author(s):  
Stephan Wildeus ◽  
Tom Murphy ◽  
Dahlia O’Brien
Keyword(s):  
Body Weight ◽  
Mating System ◽  
Fixed Effects ◽  
Production Systems ◽  
Management Tool ◽  
Birth Month ◽  
Increase Productivity ◽  
Lamb Survival ◽  
Terminal Sire ◽  
Birth Type

Abstract Objectives were to evaluate lamb survival and body weight (BW) under an accelerated, pasture-lambing system. Lambs were born to Barbados Blackbelly (BB) or St. Croix dams (SC) mated within breed (purebred) or to Dorset (terminal) in single sire mating groups. Lambs were born in April (2013 and 2015), December (2013 and 2015), and August (2014 and 2016) and weaned at 9 weeks of age. Traits considered were BW at birth (BW0; n = 959), 65-d adjusted weaning BW (BW65; n = 788), and survival to weaning (n = 959). Data were analyzed with fixed effects of dam age, sex, birth type, dam breed (BB vs SC), dam mating system (purebred vs terminal), birth month-year, and significant two-way interactions and a random dam effect. Dam breed did not impact BW65 (P = 0.09). While BW0 was greater for lambs born to SC than BB dams (3.44 vs 3.23 kg; P &lt; 0.01), survival to weaning was greater for lambs born to BB than SC dams (0.93 vs. 0.87; P = 0.02). The dam mating system x birth month-year interaction was significant for both BW traits (P ≤ 0.01). Within birth month-year, BW0 was 18 to 24% greater and BW65 was 12 to 24% greater for terminal than purebred lambs (P &lt; 0.01). However, BW0 differences between dam mating systems were greatest for August born lambs whereas BW65 differences were greatest for April born lambs. Lamb survival was not affected by dam mating system or birth month-year (P ≥ 0.27). Using a terminal sire improved BW without affecting survival of lambs reared by landrace hair sheep dams, making this a viable management tool to increase productivity of forage-based production systems.

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