Weaning performance of beef Hungarian Fleckvieh calves: 3. Genotype × environment interaction

Abstract. The interaction of sire and population in Hungarian Fleckvieh beef cattle breed were examined in this study on data from the Hungarian Fleckvieh Breeders Association. Data of 2 345 progeny (1 260 male and 1 085 female), born between 1992 and 2003, of 35 sires from two populations were evaluated. Preweaning daily gain (PDG) and 205-day weight (205-dw) were analysed. Population, age of cows, year of birth, season of birth and sex of calves as fixed, sire and sire × population were treated as a random effect. Among the same performance data in the two populations (A, B) genetic correlation (rg), while by the gradiation of sires rank correlation (rrank), were evaluated. Data were analysed with HARVEY’S (1990) Least Square Maximum Likelihood Computer Program and SPSS 9.0 for Windows. Results were as follows: rg=PDGA−PDGB: 0.31(P<0.01); 205-dwA−205-dwB: 0.22(P<0.01) and rrank=PDG: −0.04(P>0.05); 205-dw: 0.078(P>0.05). According to the result of examination important and significant (P<0.001) sire × population interaction were found in case of the two traits in Hungarian Fleckvieh breed.

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Effect of boar exposure on expression of genetic potential for age of puberty in gilts

Animal Science ◽

10.1017/s000335610001309x ◽

1991 ◽

Vol 52 (3) ◽

pp. 521-526 ◽

Cited By ~ 4

Author(s):

T. J. Safranski ◽

W. R. Lamberson ◽

R. O. Bates

Keyword(s):

Group Treatment ◽

Least Square ◽

Environment Interaction ◽

Blood Samples ◽

Genotype Environment Interaction ◽

Dependent Variables ◽

Treatment Interaction ◽

Age At Puberty ◽

Seven Generations ◽

Pool Population

ABSTRACTGenotype × environment interaction for age at puberty was evaluated using gilts from the Nebraska Gene Pool population derived from lines selected randomly (RS; no. = 48) or for seven generations for decreased age at puberty (AP; no. = 73). Age at puberty was evaluated in two environments: boar exposure for 15 min daily (BE) or no boar exposure (NBE). Pigs were randomly assigned to treatment and mixed into groups of 20 in pasture lots. Oestrous detection was initiated when the oldest gilt in a pen was 125 days of age. Blood samples were taken weekly and assayed for progesterone. Gilts were considered to have expressed oestrus if they exhibited lordosis or had consecutive weekly blood samples with progesterone values above 6·4 × 109 mol/1 (2 μ, g/l). Gilts were removed from the pen upon confirmation of puberty or at 250 days of age. Two gilts failed to reach puberty by 250 days so this value was assigned as their age at puberty. Least-squares analyses of variance were used to analyse the data. A model including line, sire within line, farrowing group, treatment and line × treatment interaction was fitted to the dependent variables age at puberty and percentage cycling by 185 days. Line and treatment each affected age at puberty (P < 0·05) but did not interact. Least-square mean ages at puberty were 154 (s.e. 4·5), 164 (s.e. 4·7), 164 (s.e. 6·1) and 179 (s.e. 5·9) days for AP-BE, AP-NBE, RS-BE and RS-NBE, respectively. Treatment affected percentage of gilts cycling by 185 days (P < 0·05). Least-square percentages were 91 (s.e. 6·9), 76 (s.e. 71), 84 (s.e. 9·2) and 65 (s.e. 8·9) % for AP-BE, AP-NBE, RS-BE and RS-NBE, respectively. These results indicate that expression of response to selection for decreased age at puberty in the gilt is not dependent on stimuli from the boar.

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Grain yield stability of spring safflower (Carthamus tinctorius L.)

Australian Journal of Agricultural Research ◽

10.1071/ar07273 ◽

2008 ◽

Vol 59 (6) ◽

pp. 546 ◽

Cited By ~ 5

Author(s):

Reza Mohammadi ◽

Sayyed Saeid Pourdad ◽

Ahmed Amri

Keyword(s):

Coefficient Of Variation ◽

Rank Correlation ◽

Type A ◽

Carthamus Tinctorius ◽

Coefficient Of Determination ◽

Environment Interaction ◽

Type B ◽

Stability Parameters ◽

Spearman’S Rank Correlation ◽

Genotype Environment Interaction

The additive main effect and multiplicative interaction (AMMI) model and the phenotypic stability parameters, ecovalence (W2), regression coefficient (b), coefficient of determination (R2), coefficient of variation (CV), stability variance (S2), AMMI stability value (ASV), and TOP (proportion of environments in which a genotype ranked in the top third), were used to evaluate simultaneously the yield performance and stability of 17 spring safflower genotypes and to evaluate 26 rainfed environments during 2003–05 in Iran. These parameters were designated as Type-A and Type-B for genotypes and environments, respectively. Among Type-B parameters, Spearman’s rank correlation showed that the AMMI stability value (ASVj), ecovalence (Wj2), genotypic variance (Sj2), and coefficient of variation (CVj) were significantly and positively associated (P < 0.01), indicating that one of these parameters can be used as an alternative to the others, but were significantly and negatively correlated with the genotypic selectivity (bj) parameter. The results showed that none of the Type-A statistics per se was useful for selecting high-yielding and stable genotypes. Based on these parameters, the genotypes G9, G10, and G11 combined high and stable yields while the highest yielding genotypes G1 and G17 were the most instable. Type-A and Type-B stability parameters are useful to identify genotypes with specific and large adaptations and the contrasting environments with high contribution to genotype × environment interaction.

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Assessment of Stability and Adaptation Patterns of White Sugar Yield from Sugar Beet Cultivars in Temperate Climate Environments

Agronomy ◽

10.3390/agronomy9070405 ◽

2019 ◽

Vol 9 (7) ◽

pp. 405 ◽

Cited By ~ 3

Author(s):

Marcin Studnicki ◽

Tomasz Lenartowicz ◽

Kinga Noras ◽

Elżbieta Wójcik-Gront ◽

Zdzisław Wyszyński

Keyword(s):

Sugar Beet ◽

Rank Correlation ◽

Sugar Yield ◽

Temperate Climate ◽

Environment Interaction ◽

Growing Seasons ◽

Genotype Environment Interaction ◽

Yield Quality ◽

The Stability ◽

White Sugar

The yield and yield quality of sugar from the sugar beet (Beta vulgaris L.) and are determined by genotype, environment and crop management. This study was aimed at analyzing the stability of white sugar yield and the adaptation of cultivars based on 36 modern sugar beet cultivars under different environmental conditions. The compatibility of sugar beet cultivars’ rankings between the three growing seasons and between the 11 examined locations was assessed. In addition, an attempt was made to group environments to create mega-environments. From among the 11 examined locations, four mega-environments were distinguished on the basis of the compatibility of the white sugar yield rankings. The assessment of the adaptation of cultivars and the determination of mega-environments was carried out using GGE (genotype main effects plus genotype environment interaction effects) biplots and confirmed by the Spearman rank correlation test performed for cultivars between locations. The cultivars studied were characterized by a high stability of white sugar yield in the considered growing seasons. The high compliance of the sugar yield rankings between the years contributes to a more effective recommendation of cultivars.

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The evaluation of genetic parameters of the type of calving in the population of Holstein Friesian cows

Genetika ◽

10.2298/gensr1301041d ◽

2013 ◽

Vol 45 (1) ◽

pp. 41-49

Author(s):

Radica Djedovic ◽

Vladan Bogdanovic ◽

Gligorije Trifunovic ◽

Radmila Beskorovajni ◽

Dragan Stanojevic

Keyword(s):

Birth Weight ◽

Fixed Effects ◽

Genetic Parameters ◽

Random Effect ◽

Genetic Correlations ◽

Correlation Coefficients ◽

Cattle Breed ◽

Least Square ◽

Data Sets ◽

Holstein Friesian

Genetic parameters (heritability coefficients and genetic correlations) of the type of calving, number of stillbirths and birth weight have been evaluated in the population of Holstein Friesian cattle breed. Data sets have been analysed by means of the Mixed Least Square Model (LSMLMW). Besides a random effect of bull-sires, the model has also included the fixed effects of farm, season, sex, the evaluation of viability of calves and types of birth. Estimated heritability values and heritability errors for the type of calving (TC), number of stillbirths (SB) and birth weight (BWT) were low: 0.190 ? 0.062; 0.018 ? 0.006 and 0.149 ? 0.051, respectively. Heritabilities of the analysed traits were evaluated on the grounds of the calves` bull-sires additive value (direct heritability). The values of the genetic correlation coefficients between examined traits ranged from - 0.251 (correlation between the type of calving and number of stillbirths) to 0.340 (correlation between the number of stillbirths and birth weight).

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Weaning results of beef Hungarian Fleckvieh calves 1. Environmental factors

Archives Animal Breeding ◽

10.5194/aab-53-18-2010 ◽

2010 ◽

Vol 53 (1) ◽

pp. 18-25

Author(s):

F. Szabó ◽

I. Füller ◽

A. Fördős ◽

S. Bene

Keyword(s):

Environmental Factors ◽

Random Effect ◽

Mean Value ◽

Least Square ◽

The Other ◽

Birth Season ◽

Weaning Weight ◽

The Mean ◽

The Difference ◽

Daily Gain

Abstract. Weaning performance of 7 032 purebred Hungarian Fleckvieh calves (3 650 male and 3 382 female) born between 1981 and 2003 from 1 452 cows mated with 113 sires were analysed in two farms. The aim of the study was to evaluate the effect of environmental factors on weaning traits. Farm, age of cows, year of birth, season of birth and sex of calves as fixed, while sire as a random effect was treated. Data were analysed with HARVEY’s (1990) Least Square Maximum Likelihood Computer Program. The overall mean value and standard error of weaning weight, preweaning daily gain and 205-day weight were 214 ± 3.01 kg, 980 ± 17.31 g/day and 236 ± 3.40 kg, respectively. The mean age of the analysed calves was 181 ± 33 days. The results of the examination show that weaning weight, preweaning daily gain and 205-day weight increased as far as the 6 year age cows (the maximum were 226 ± 3.13 kg, 1 049 ± 17.89 g/day, 251 ± 3.54 kg). As for the season effect the calves born in summer were smaller (208 ± 3.12 kg, 946 ± 17.84 g/day and 230 ± 3.52 kg) than that of born in the other seasons (P<0.001). The male calves were heavier than females, the difference was 12 kg, 50 g/day, 16 kg, respectively (P<0.001). The best year was 1985, the worst 2000.

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