scholarly journals Performance of wool type angora rabbits under temperate conditions of Kashmir (J&K), INDIA

2017 ◽  
Vol 9 (2) ◽  
pp. 1022-1025
Author(s):  
Nafis I. Assad ◽  
N. N. Khan ◽  
Safeer Alam ◽  
Dibyendu Chakraborty
Keyword(s):  
Genetic Factors ◽  
Fiber Diameter ◽  
Body Weight Gain ◽  
Climatic Conditions ◽  
Production Traits ◽  
Quality Performance ◽  
Adult Weight ◽  
Wool Yield ◽  
Angora Rabbit ◽  
Staple Length

An attempt has been made to determine the production and quality performance of wool type Angora rabbits and screen out the best suitable breed under temperate conditions of Kashmir. A total of 202 records of French Angora and German Angora rabbit breeds maintained for 3 years (2009-2011) were evaluated to estimate the performance of quality and production traits in relation to genetic and non-genetic factors. For French Angora rabbits, the overall body weight gain (adult weight), annual wool yield (AWY), staple length (SL), medullation percentage (MP) and fiber diameter (FD) were found to be 2.506 ± 0.0432 kg, 303.575 ± 0.316 gms, 5.161 ± 0.0183 cms, 2.228 ± 0.0217 % and 12.289 ± 0.0178 µ, respectively. In case of German Angora rabbits, the values of 2.506 ± 0.033 kg, 605.96 ± 0.474 gms, 6.219 ± 0.0279 cms, 2.513 ± 0.0348 % and 12.347 ± 0.0265 µwere observed for the respective traits. The breed was found to reveal significant effect (P<0.01) on birth weight, weaning weight, annual weight, annual wool yield, staple length and medullation percentage and non-significant effect on fiber diameter. The sex was found to exhibit non-significant effect on all the traits under study. Based on present study, it can be concluded that German Angora breed of rabbit is most suitable for angora wool production and quality under temperate climatic conditions of Kashmir region.

scholarly journals Genetic effect of growth hormone gene on yearling weight and wool traits in Zel sheep (Brief Report)

2012 ◽  
Vol 55 (3) ◽  
pp. 303-306
Author(s):  
S. Yousefi ◽  
M. A. Azari
Keyword(s):  
Growth Hormone ◽  
Coefficient Of Variation ◽  
Growth Regulation ◽  
Fiber Diameter ◽  
Body Weight Gain ◽  
Genetic Effect ◽  
Positive Association ◽  
Single Strand Conformation Polymorphism ◽  
Growth Hormone Gene ◽  
Staple Length

Abstract. The growth hormoe (GH) gene is a candidate for growth in sheep, since plays an important role in growth regulation and development (Boyd &amp; Bauman 1989). Most genetic studies on the growth of sheep have concentrated on birth weight, weaning weight and yearling weight (Bathaei &amp; Leroy 1998). Pereira et al. (2005) found significant effect for bovine growth hormone (bGH) genotype on yearling weight. Tambasco et al. (2003) observed a positive association between genotype LV and daily body weight gain from weaning to yearling in Bos Taurs x Bos indicus crosses. Wool traits like greasy fleece weight, clean yield, fiber diameter and its coefficient of variation are very important selection goals in sheep breeding programs, however new traits such as staple strength and staple length are of increasing importance in the wool industry (Forgarty 2006). Initial observations using daily injections of crude pituitary extracts showed that wool growth decreased by 17 % during the second treatment period (Ferguson 1954). Allain et al. (1998) found segregation for coefficient of variation of fiber diameter and staple length on chromosomes 3 and 4 in a composite sheepline (INRA401). Zel sheep is raised in North of Iran. This sheep is a native non-fat tailed breed with small-sized (Saadat-Noori &amp; Siah-Mansoor 1990). The aim of this study was to investigate the relationship between GH genotypes and wool traits and yearling weight using single strand conformation polymorphism (SSCP) method in Zel sheep.

scholarly journals Heritability of production characteristics of regional populations of honey bees from Serbia

Genetika ◽  
2012 ◽  
Vol 44 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Goran Jevtic ◽  
Bojan Andjelkovic ◽  
Zoran Lugic ◽  
Jasmina Radovic ◽  
Bora Dinic
Keyword(s):  
Honey Bees ◽  
Genetic Factors ◽  
Climatic Conditions ◽  
External Factors ◽  
Production Traits ◽  
Two Generations ◽  
Queen Bees ◽  
The Republic ◽  
Production Characteristics ◽  
Honey Yield

In this experiment, colonies of six regional populations from the territory of the Republic of Serbia were included, and two generations (maternal colonies and their offspring) were observed. In two inspections (fall and spring), production traits and temperament were observed. Daughter queen bees mated in uncontrolled conditions (free-mating) in order to determine heritability of production traits in terms of practical beekeeping. The heritability coefficients (h2) for production traits calculated. It was found that the honey yield was mostly determined by genetic, but environmental conditions also had significant influence. Heritability for honey yield (h2) ranged from 72.72% (Rasina population) to 81.04% (Banat population). Colony strength was very dependent on external factors, but also from the very population. When it comes to food supply (honey and pollen), in the inspections, large differences in the heritability coefficient were determined, which is explained by the interaction of genetic factors (the foraging instinct) and environmental factors (honey flora and climatic conditions during foraging) and the influence of beekeepers (feeding, etc.).

Effect of Breed and Some Non - Genetic Factors on Milk Production and Some Proportions of Its Chemical Components in Two Breeds of Local Sheep

2020 ◽  
Vol 10 (1) ◽  
pp. 227-231
Author(s):  
Rahman Hussein AL-Qasimi ◽  
Shatha Mohammed Abbas ◽  
Allawi L.D. AL-Khauzai
Keyword(s):  
Milk Production ◽  
Genetic Factors ◽  
Chemical Components ◽  
Lactation Period ◽  
Production Traits ◽  
Milk Production Traits ◽  
Fat Percentage ◽  
Awassi Sheep ◽  
Total Milk ◽  
Milk Components

The study was carried out on 19 ewes of local Awassi sheep and 12ewes local Arabi sheep in the Al-kafeel sheep station Karbala, to determine the effect of breed and some non-genetic factors such as (sex of the lamb, type of birth, age and weight of ewes at birth) on daily and total milk production and lactation period and some of milk components (fat, protein and lactose). The results showed that a significant effect (P <0.05) of the breed on milk production traits where Awassi sheep recorded the highest mean (0.91 kg , 101.63 kg , 104.86 day) compared to the Arabi sheep she was means (0.77 kg , 88.15 kg , 99.15 day) respectively. As well as in proportions of milk components with mean( 5.1 , 4.90 , 5.51) % respectively compared to the Arabi sheep (4.70 . 4.20 . 4.89) ewes with male lambs also exceeded superior ewes with female lambs in daily and total milk production and the lactation period the sex of the lamb did not affect the proportions of milk components the weight of the ewes had a significant effect (P <0.05) in milk production attributes with superior weight of ewes on lower ewes and did not affect the proportions of milk ingredients except for lactose. The type of birth and the age of the ewes did not have a significant effect in all the studied traits except for the superiority (P<0.05) of young ewes on age ewes in the fat percentage of milk.

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 Variation in Wool Characteristics across the Body in a Herd of Alpacas Kept in Poland

Animals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2939
Author(s):  
Aurelia Radzik-Rant ◽  
Małgorzata Wielechowska ◽  
Witold Rant
Keyword(s):  
Representative Sample ◽  
Fiber Diameter ◽  
The Body ◽  
The Mean ◽  
Old Females ◽  
Staple Length

Wool characteristics vary depending on where on the body the wool is produced. Knowledge of this variation is important in order to separate the fleece into more homogenous parts. Similar parts from different animals can then be pooled to create batches of wool with similar characteristics. This will allow for better alpaca products with less variation. The aim of this study was to determine the variation in fiber diameter, medullation, and staple length across the body of alpacas from one herd. Wool samples were collected from 16 adult (3–5 years old) females: from the saddle (S), midside (MS), neck (N), and pieces (P). The mean fiber diameter (MFD) and medullation were measured using a projection microscope according to the IWTO-8-2011 standard. The fiber diameter of the pieces was greater (p < 0.05) than for the S, MS, and N areas. The highest medullation was found on the neck. The neck was also characterized by the shortest wool. The MFD for the fleece, excluding P, showed the strongest correlation (r = 0.927) with the MFD of MS. The study showed that due to the variation of fiber diameter, the incidence of medullation, and staple length, the wool from the pieces and the neck should be separated from the total fleece. The most appropriate site from where to collect a representative sample of wool from the fleece for testing purposes is the midside site of the animal.

scholarly journals 195 Association of insulin, glucagon, and glucagon-like peptide-1 with production traits of growing and finishing beef heifers fed forage- and concentrate-based rations

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 26-27
Author(s):  
Andrew P Foote ◽  
Harvey C Freetly
Keyword(s):  
Feed Intake ◽  
Fixed Effects ◽  
Mixed Model ◽  
Body Weight Gain ◽  
Production Traits ◽  
Beef Heifers ◽  
Mineral Supplement ◽  
Negatively Associated ◽  
Alfalfa Hay ◽  
Glucagon Like Peptide

Abstract The objective of this study was to determine the association of insulin, glucagon, and glucagon-like peptide (GLP-1) with production traits of growing and finishing beef heifers fed a forage- (FOR) and concentrate-based (CONC) ration. This experiment was conducted over 2 years. Shortly after weaning, heifers (n = 74 and 62, for year 1 and 2, respectively) were placed on a ration containing (DM basis) 69.8% corn silage, 30% alfalfa hay, and 0.2% salt. Feed intake was measured for 84 d using Calan gates and BW were measured at 7-time points to calculate ADG using a quadratic regression of BW on time. Cattle were then transitioned to a concentrate-based finishing ration containing (DM basis) 67.8% dry-rolled corn, 20% wet distillers grains with solubles, 8% alfalfa hay, and 4.2% vitamin/mineral supplement. Blood samples were collected on day 42 of each period. Data were analyzed as a mixed model with fixed effects of sire breed, period, and the random variable of year. Hormone concentration was included as an interaction with period to determine the association of the hormones with production traits. Dry matter intake (DMI), average daily body weight gain (ADG), gain:feed (G:F), and all three hormones were greater in the CONC period (P &lt; 0.01). Insulin was negatively associated with DMI only during the CONC period (P = 0.04) and positively associated with G:F (P = 0.01). GLP-1 was positively associated with CONC DMI (P &lt; 0.01), FOR ADG (P &lt; 0.01), and positively associated with FOR G:F and negatively associated with CONC G:F (P &lt; 0.01). Glucagon was positively associated with residual feed intake (P = 0.04). While these data do not infer causality, they do indicate that more in-depth understanding of the role of gut peptide and insulin signaling in feed efficiency needs to be evaluated.

scholarly journals LAMB AND WOOL PRODUCTION FROM FIVE BREEDS ON RANGE

1966 ◽  
Vol 46 (1) ◽  
pp. 9-18 ◽  
Author(s):  
J. A. Vesely ◽  
H. F. Peters ◽  
S. B. Slen
Keyword(s):  
Body Weight ◽  
The Other ◽  
Production Traits ◽  
Weaning Weight ◽  
Wool Production ◽  
Breed Differences ◽  
Percentage Yield ◽  
Ewe Lamb ◽  
Fleece Weight ◽  
Staple Length

Rambouillet, Romnelet, Columbia, Targhee, and Suffolk sheep were evaluated under range conditions for the production of lamb and wool in the period 1960–1963. The production traits analyzed were: birth and weaning weight; face cover and neck wrinkling; fertility, prolificacy, weaned lamb production, and body weight of ewe; lamb survival to weaning; grease and clean fleece weight, staple length, wool grade, and percentage yield of clean wool by yearling and mature ewes.Lambs of Romnelet were lighter at birth than those of the other breeds. Targhee and Suffolk were the heaviest at birth. Romnelet and Columbia lambs were lighter at weaning than those of Rambouillet, Targhee, and Suffolk.Fertility, prolificacy, and weaned lamb production were essentially the same in the four range breeds. Suffolk produced more weaned lamb than the other four breeds. There were no breed differences in the survival of lambs.Columbia exceeded all other breeds in production of grease and clean fleece weight. Suffolk produced the smallest amount of wool. Staple length of Columbia ewes was 4.3, 7.5, 18.6, 23.7 mm longer than that of Romnelet, Targhee, Suffolk, and Rambouillet ewes.

An economic analysis of a 10 year rate of stocking trial with fine-wool

1978 ◽  
Vol 18 (92) ◽  
pp. 370 ◽  
Author(s):  
JM George ◽  
RA Pearse
Keyword(s):  
New South ◽  
Climatic Conditions ◽  
Stocking Rate ◽  
Labour Costs ◽  
South Wales ◽  
Wide Range ◽  
Wool Yield ◽  
Stocking Rates ◽  
Price Relationships ◽  
Clover Pasture

Merino ewes were grazed for 10 years at stocking rates of 8, 12 and 16 ha-1, lambing in winter, spring or summer on a phalaris/white clover pasture on the Northern Tablelands of New South Wales. Wool production, wool yield and count, and lambing and weaning rates were established for the wide range of climatic conditions experienced. A spring lambing is indicated under the within-year price relationships experienced. Under a wide range of wool and lamb prices the optimum stocking rate varied from 12 to 16 ewes ha-1 depending on labour costs.

Alterations in plasma constituents, growth and egg production traits due to selection in three genotypes of Japanese quail

2018 ◽  
Vol 156 (1) ◽  
pp. 118-126 ◽  
Author(s):  
G. S. Farahat ◽  
B. Y. Mahmoud ◽  
E. M. El-Komy ◽  
E. A. El-Full
Keyword(s):  
Body Weight ◽  
Japanese Quail ◽  
Egg Production ◽  
Body Weight Gain ◽  
Egg Mass ◽  
Production Traits ◽  
Total Lipids ◽  
Laying Performance ◽  
Productive Traits ◽  
And Control

AbstractThe present investigation was carried out to estimate the effects of genotype and sex on growth and laying performance and assess the variations in plasma constituents in the tested genotypes and their relations with productive traits after four generations of selection. Data of growth and laying performance on 1440 females and males of Japanese quail were taken from the three quail genotypes: maternal (MG), long shank length (LSG28) and control (CG) genotypes. Genotype significantly affected all studied growth productive traits, favouring selected genotypes. The LSG28surpassed MG in total protein, albumin (Alb), globulin (Glob), triglycerides and Alb/Glob ratio and lowered both cholesterol and total lipids (TL). Sex significantly favoured females, which had higher body weight, longer shank length at 35 days of age and higher body weight gain during the period from 1 to 35 days of age. Females showed significantly higher concentrations of both Alb and TL than males. The MG exceeded LSG28in fertility and hatchability per cent. Correlations for both growth and productive traits with plasma constituents revealed inconsistent trends in either magnitude or direction. Four generations of selection resulted in substantial phenotypic improvements in most growth and productive traits, as well as plasma constituents studied in LSG28, and favoured MG in maturity, days needed to produce the first ten eggs, higher egg production per cent and heavier egg mass.

scholarly journals Association of FTO gene with obesity in Polish schoolchildren

2014 ◽  
Vol 77 (1) ◽  
pp. 33-44 ◽  
Author(s):  
Aneta Sitek ◽  
Iwona Rosset ◽  
Dominik Strapagiel ◽  
Małgorzata Majewska ◽  
Lidia Ostrowska-Nawarycz ◽  
...  
Keyword(s):  
Genetic Factors ◽  
Body Weight Gain ◽  
Direct Sequencing ◽  
Significant Risk ◽  
Early Period ◽  
Normal Weight ◽  
Independent Effect ◽  
Obese Children ◽  
Fto Gene ◽  
Minor Alleles

Abstract The goal of the study was verification of fat mass and obesity-associated (FTO) gene polymorphisms as significant risk factors of obesity in the population of Polish children. Body mass index (BMI) and DNA were evaluated, where DNA was extracted from saliva, collected from 213 children at the age of 6-13 years. DNA was genotyped by PCR (polymerase chain reaction) and HRM (high resolution melting) techniques, as well as by direct sequencing. Three (3) FTO polymorphisms were identified: rs9939609, rs9926289 and rs76804286, the last polymorphism located between the first two. For the first time, absolute linkage disequilibrium (LD) of FTO gene rs9939609 and rs9926289 polymorphisms was confirmed in data for the Polish population (D’=1, r2=1). The lack of a complete dependence among the three single nucleotide polymorphisms (SNPs) of the FTO gene was a consequence of the concurrence of homozygotes with minor alleles A of rs9939609+rs9926289 of FTO (AA+AA) with major alleles of rs76804286 (GG). A case-control association analysis for BMI in obese children (n=51), as compared to normal-weight children (n=162), was based on the effects of genotypes homozygous for the minor alleles of the studied SNPs in recessive and codominant inheritance models (assuming an independent effect of each genotype). A comparison of children with normal BMI with obese children indicate a strong co-dominant effect of a genotype in homozygotes of minor alleles (AA+AA) of completely linked rs9939609+rs9926289 (OR at age 8.89 ± 1.54 years=4.87, 95% CI 1.81-13.12, p=0.002). An almost five-fold increase of obesity risk in the examined children indicates that the genetic factors, associated with excessive body weight gain, exert stronger effects in the early period of ontogenetic development vs. puberty and adulthood. The role of genetic factors in predisposing to obesity declines with age

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