Polymorphisms in BMPRIB gene affect litter size in Chinese indigenous sheep breed

2021 ◽  
pp. 1-8
Author(s):  
Futao Mo ◽  
Weibo Sun ◽  
Liping Zhang ◽  
Xiaoyan Zhang ◽  
Yongfu La ◽  
...  
Keyword(s):  
Litter Size ◽  
Sheep Breed ◽  
Indigenous Sheep

scholarly journals Prediction of genetic gains for breeding objective traits and designing selection schemes for Washera and Gumuz indigenous sheep

2021 ◽  
Vol 4 (1) ◽  
pp. 1-13
Author(s):  
Sisay Asmare ◽  
Sisay Asmare ◽  
Kefyalew Alemayehu ◽  
Solomon Abegaz K. ◽  
Aynalem Haile ◽  
...  
Keyword(s):  
Litter Size ◽  
Selection Index ◽  
Genetic Response ◽  
Breeding Scheme ◽  
Selection Scheme ◽  
Genetic Gains ◽  
Washera Sheep ◽  
Indigenous Sheep ◽  
Breeding Objective ◽  
One Year

In Ethiopia,there are 32.85 millions of sheep,more than 99 % of which are indigenous.However,the productivity of local sheep under traditional production system is low with high mortality of sheep.There are two ways of improving performance of sheep and goats,namely improving the enviroment of animals and/or improving there genetic potential.The aim of this study was to predict genetic gains of breedingobjective traits and select the best sheep selection scheme for Gumuz andWashera sheep. Body size(six month weight and yearling weight) and litter size were breeding objective traits identified by own flock animal ranking experiment and personal interview. Deterministic approach of ZPLAN computor program is used for modeling input parametres of Gumuz and Washera sheep and simulating breeding plans using gene flow method and selection index procedures. One-tier cooperative sheep breeding scheme were proposed whereby ram exchange between and within villages is the main means of genetic dissimination. Genetic gains predicted for six month weight of Gumuz and Washera sheep were 0.43 and 0.55 kg,respectively. Genetic gains predicted for yearling weight of Gumuz and Washera sheep were 0.55 and 0.60 kg,respectively. Genetic gains predicted for litter  size of Gumuz and Washera sheep were 0.08 and 0.09 lambs,respectively. The lower rate of inbreeding, the higher monetary genetic gain for aggregate genotype,higher return to investmnet and higher profit/ewe/year were quality measures of breeding program considered to prefer scheme 4 for both Gumuz and Washera sheep.Hence,for both Gumuz and Washera sheep populations a sheep selection scheme designed with 15 % selection proportion and one year ram use for breeding was recommended. Special emphasis need to be given to yearling weight with higher predicted genetic response and higher percentage return to investment.

scholarly journals Variability of blood serum biochemical parameters in Karakachan sheep

2015 ◽  
Vol 31 (1) ◽  
pp. 55-62 ◽  
Author(s):  
O. Stevanovic ◽  
M. Stojiljkovic ◽  
D. Nedic ◽  
D. Radoja ◽  
V. Nikolic ◽  
...  
Keyword(s):  
Blood Serum ◽  
Total Protein ◽  
Age Groups ◽  
Balkan Peninsula ◽  
Inorganic Phosphorus ◽  
Sheep Breed ◽  
Mean Values ◽  
Indigenous Sheep ◽  
Significant Difference ◽  
Glutamyl Transferase

Karakachan sheep represents an endangered, indigenous sheep breed from Balkan Peninsula. There is relatively little information about the characteristics of this sheep breed in the veterinary scientific literature. The aim of this research was an examination of certain metabolic profile parameters of the Karakachan sheep blood serum, and variability of their concentrations in comparison to age and some other indigenous sheep breeds from Balkans. Examination was conducted on 14 clinically healthy sheep divided in two age groups. Blood samples were collected by puncture of v. jugularis and blood serum was separated after spontaneous coagulation. The concentrations of total protein, albumin, calcium, inorganic phosphorus, aspartate amino transferase (AST) and ?- glutamyl transferase (GGT) were determined. In relation to age of Karakachan sheep, statistically significant difference between the calculated mean values of examined parameters was not observed. A statistically significant difference was found between the mean concentrations of the studied parameters in Karakachan sheep and other breeds in total protein (Tsigai, Dubrovnik and Dalmatian sheep), albumin (Dalmatian), calcium and inorganic phosphorus (Tsigai, Dubrovnik) and AST's (Dalmatian, Karakachan sheep from Bulgaria).

scholarly journals Association of gdf9 Gene Polymorphisms With Litter Size in Indigenous Sheep of Bangladesh

2020 ◽  
Vol 7 (2) ◽  
pp. 283-292
Author(s):  
Faruk Hossain ◽  
Sharmin Akter Suma ◽  
Mohammad Shamsul Alam Bhuiyan
Keyword(s):  
Gene Polymorphism ◽  
Litter Size ◽  
Gene Polymorphisms ◽  
Climatic Conditions ◽  
Animal Protein ◽  
Selection Program ◽  
Indigenous Sheep ◽  
Gdf9 Gene

Sheep in Bangladesh are well known as efficient users of low quality roughages, welladapted to hot and humid agro-climatic conditions, capable of bi-annual lambing withmultiple births and resistant to common prevalent diseases. They play an important role inthe supply of animal protein. Present study aimed to investigate possible association ofGDF9 gene polymorphisms with litter size. A total of 126 DNA samples extracted from theblood of indigenous sheep from 5 locations namely Tangail, Noakhali, Naogaon,Gaibandha and Satkhira with known litter size were used to study the association ofGDF9 polymorphism by PCR based RFLP method. Two polymorphic regions of GDF9(FecG1 and FecG8) were amplified by PCR, digested with respective restriction enzymesand 126 sheep were genotyped. Current study revealed that genotype and allelefrequency for FecG1 varied among the sheep from different locations. The genotype (GG,AG, AA) frequency were 51.59%, 45.24% and 3.17% and the allele (G and A) frequenciesin the overall population were 74.21% and 25.79%, respectively. There was a significantassociation of FecG1 of GDF9 gene polymorphism with litter size. The homozygous GGgenotype had the lowest litter size (1.59±0.09; n=65) and homozygous AA genotype hadthe highest litter size (2.00±0.41; n=4). No genotypic variations were found for FecG8.Findings of this study specially the polymorphism of FecG1 together with genotyping ofsome sheep could be utilized in the selection program to increase the lamb productionpotentiality of indigenous sheep of Bangladesh. Res. Agric., Livest. Fish.7(2): 283-292,  August 2020

scholarly journals Dorper sheep cross breeding with Indigenous sheep breed in Ethiopia

2019 ◽  
Vol 4 (1) ◽  
pp. 36
Author(s):  
Desalegn Ayichew Walle
Keyword(s):  
Research And Development ◽  
Research Output ◽  
Sheep Breed ◽  
Meat Production ◽  
Cross Breeding ◽  
Sheep Breeds ◽  
Indigenous Sheep ◽  
Dorper Sheep ◽  
On Farm ◽  
Better Than

The objective of this review paper was to review dorper sheep cross breeding with indigenous sheep breed in Ethiopia. The paper reviewed and discussed the history of dorper breed introduction, research and development efforts in crossbreeding and their performance under on-station and on-farm management. Formal survey on farmers perception on Dorper cross sheep indicated that the crossbred dorper sheep have non selective feed behavior and excellent in meat production under farmer`s management. On other study showed that dorper sheep was not meet farmer interest in breeding sheep aspect because of black coat color. The performance of indigenous sheep and their crosses with Dorper varied as per the location, management, farming conditions and percentage of exotic blood level inheritance. Different research output by team of researchers on farm and on station performance evaluation of dorper indicated that crossbreds often outperformed their local contemporaries. Under on farm condition, body weight at different ages was significantly higher in 50% Dorper crosses as compared to their 25% and75% counter parts.On station birth weight of Dorper (3.39 3.8 kg) better than crossbreed (3.0 3.24 ± 0.04 kg) and local sheep (2.36 2.77 kg), respectively.While the mean weaning weight (14 16 kg) and yearling weight (26.95 32.43 ± 0.46 kg) of 50% Dorper crossbreed was better than indigenous sheep breeds. However, crossbred ewes and local sheep breeds did not differ in litter size. Dorper crosses with Afar under on station is not economically important due to lower weight in all aspects. Crossbreeding programs of dorper with indigenous sheep require strong research and development support from public service and non-governmental institutions for sustainable design, optimization, and implementation in clearly defined production environments.

scholarly journals Study on the continuity of farmer`s breeding activity with Patch Faced Maritza sheep breed

2018 ◽  
Vol 10 (4) ◽  
pp. 285-289
Author(s):  
P. Zhelyazkova ◽  
V. Petrova ◽  
D. Dimov
Keyword(s):  
Population Structure ◽  
Breeding Program ◽  
Sheep Breed ◽  
Meat Production ◽  
Positive Trend ◽  
Government Programs ◽  
Breeding Activity ◽  
Breeding Work ◽  
Indigenous Sheep ◽  
Active Population

Abstract. The aim of this study was to analyze tendencies in the population of Patch Faced Maritza sheep breed and estimation of sustainability of the breeding program for this breed by analyzing continuity of farmer`s breeding activity. Patch Faced Maritza sheep breed is a local Bulgarian sheep breed typical for lowland regions of South Bulgaria and could be successfully used as local genetic resource in productive strategies for milk and meat production. Data about breeders and population structure of the breed during 27 years (1991-2017) were provided by the breeding association of Maritza sheep breed. The changes in the population structure during the 2005-2017 were tracking. The number of breeders included in the breeding program was increased from 10 to 88 herds. This positive trend in the population and increased farmer`s interest to participate in the breeding program were due to government programs for supporting sheep farming and preserve many indigenous sheep breeds that are part of agricultural heritage. The increased number of herds included in the breeding program led up to enlarge active population in three main reproductive categories: ewes, rams and breeding lambs. Comparatively small number of ewes, rams and breeding lambs which in 2005 were respectively 375, 13 and 180 run to 7678, 493 and 1868 in 2017. This enlarge of active population was achieved by three ways: joining farmers which kept Patch Faced Maritza sheep but not participating in official breeding program of the breed, increasing the breeding lambs for replacement rate and limited upgrade crossing. On the based breeding activity contracts with farmers it was estimated continuity of breeding activity in two categories of breeders: finished breeding activity with the breed and continuing with active breeding activity with the breed. The causes for discontinuing of active farmers breeding work were analysed. A total number of farmers which finished breeding activity was 54 for 27 years. Averaged continuity of farmer`s breeding activity was 4.26 years. The analysis of this information find out five reasons for discontinuing farmers breeding activity: disinterest, death, old age, switching to another business, and changing the breed. From the listed reasons the most important are switching to another business 23 farmers and disinterest for active breeding work 17 farmers. The most important fact results nowadays is the fact that Patch Faced Maritza sheep is occurred already in 11 regions in Bulgaria, although 74.11% of the population is situated in two regions Plovdiv and Pazardzhik.

scholarly journals Meat production characteristics of Turkish native breeds: I. Fattening, slaughter and carcass traits of lambs

1970 ◽  
Vol 48 (4) ◽  
pp. 666-672
Author(s):  
Y. Aksoy ◽  
M. Uğurlu ◽  
A. Önenç ◽  
E. Şirin ◽  
U. Şen ◽  
...  
Keyword(s):  
Carcass Traits ◽  
Sheep Breed ◽  
The Other ◽  
Meat Production ◽  
Muscle Area ◽  
Sheep Breeds ◽  
Indigenous Sheep ◽  
Dressing Percentage ◽  
Production Characteristics ◽  
Carcass Cuts

The present study was conducted to determine the slaughter and carcass traits of male lambs of the Akkaraman (A), Morkaraman (M), Awassi (IW), Karayaka (KR), Kıvırcık (KV) and Middle Anatolian Merino (MAM) sheep breeds. Fattening of all lambs started when they were at 90 days at weaning and finished when they reached bodyweight of 40 kg. The cold dressing percentage of lambs of A, M, and IW breeds were significantly lower than those of KV, KR and MAM. Fat depth and muscle area were significantly greater in KV and MAM lambs than those of the other breeds. There were significant differences among breeds in shoulder, leg and lean weights. Weights of back loin in KV and MAM lambs were significantly greater than those of the other breeds. The highest values for carcass fleshiness were obtained in MAM and IW lambs, but they had a significantly lower carcass fatness score. There were significant differences among the breeds in carcass compactness and leg conformation. The results of the present study indicated that A and MAM breeds could be recommended for desirable carcass characteristics.Keywords: Carcass cuts, indigenous sheep breed, intensive lamb finishing, meat formation, SEUROP classification

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