IMPROVING THE PRODUCTIVITY OF BAHEIJ CHICKENS THROUGH BOTH OF BACKCROSSING AND SELECTION FOR BODY WEIGHT AT 8 WEEKS OF AGE C. GROWTH TRAITS, BODY CONFORMATION, CHICK VIABILIT, AND CARCASS TRAITS

ABSTRACTData on 792 Chios lambs born during the 1972/73 and 1973/74 lambing seasons were used to estimate genetic and phenotypic parameters for birth weight, weaning weight, age at weaning, pre-weaning daily gain, body weight at 5, 10, 15 and 20 weeks of age, and postweaning daily gain. Body weight at 15 weeks of age had the highest heritability estimate (0·73 ± 0·17) and that of post-weaning daily gain was also high (0·56 ± 0·15). Selection for either weight at 15 weeks or post-weaning daily gain would be expected to yield a greater response than selection for pre-weaning daily gain or weaning weight. Genetic correlations among weights and/or gains were positive (approximately 0·20). Phenotypic correlations among weights and gains were generally higher than genetic correlations. However, the correlation between pre— and post-weaning daily gain was small (0·08). Likewise, post-weaning daily gain had low correlations with all weights before 10 weeks. Age at weaning had moderate negative associations with all weights but a very low positive correlation with post-weaning daily gain.

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Genetic parameters for growth and carcass traits of Japanese Black (Wagyu) cattle

Animal Science ◽

10.1017/s1357729800054898 ◽

2000 ◽

Vol 71 (1) ◽

pp. 59-64 ◽

Cited By ~ 33

Author(s):

T. Oikawa ◽

T. Sanehira ◽

K. Sato ◽

Y. Mizoguchi ◽

H. Yamamoto ◽

...

Keyword(s):

Body Weight ◽

Genetic Parameters ◽

Growth Traits ◽

Average Daily Gain ◽

Carcass Traits ◽

Genetic Correlations ◽

Subcutaneous Fat ◽

Marbling Score ◽

Data Set ◽

Pooled Data

AbstractRestricted maximum likelihood analyses fitting an animal model were conducted to estimate genetic parameters with a pooled-data set of performance tests (growth traits and food intake) on 661 bulls and progeny tests (growth traits and carcass traits) on 535 steers. Traits studied included concentrate intake (CONC), roughage intake (ROU), TDN conversion (TCNV), TDN intake (TINT) of bulls; rib eye area (REA), marbling score (MARB), dressing proportion (DRES) and subcutaneous fat depth (SCF) of steers. Body weight at start (BWS), body weight at finish (BWF) and average daily gain (ADG) of all animals were measured. Estimated heritabilities were 0·18 (CONC), 0·71 (ROU), 0·11 (TCNV) and 0·36 (TINT); 0·02 (REA), 0·49 (MARB), 0·15 (DRES), 0·15 (SCF), and from 0·20 to 0·38 for growth traits. Genetic correlations of ROU were different from those of CONC, probably due to inconsistent restrictions on concentrate intake; those of TINT with the weights, ADG and SCF were high. MARB showed positive genetic correlations with growth traits and low correlations with TINT and SCF. High potentiality for improvement of marbling score was suggested.

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Effect of disruptive selection for body conformation on age variations of femoral morphometrie traits, in mice

Archives Animal Breeding ◽

10.5194/aab-42-201-1999 ◽

1999 ◽

Vol 42 (2) ◽

pp. 201-210

Author(s):

L. Hinrichsen ◽

D. Mana ◽

R. Di Masso ◽

M. T. Font

Keyword(s):

Body Weight ◽

Tail Length ◽

Whole Body ◽

Disruptive Selection ◽

Phenotypic Correlation ◽

Control Line ◽

Genetic Determination ◽

Body Conformation ◽

Age Variations ◽

Selection For

Abstract. The effect of disruptive selection for body conformation on body weight and length, tail length, and femur weight and length at different stages of development (21, 42, 63, and 120 days of age) was analysed in four mouse lines of the CBi stock selected for (CBi+, CBi-) and against (CBi/L, CBi/C) the phenotypic correlation between body weight and tail length, and die unselected control line CBi. As expected, body weight and tail length distributed according to the selection criteria; rrunk length (whole body length minus tail length) behaved as body welght at all ages. CBi/L had the highest femoral length (p < 0.01), and CBi/C attained the highest femoral weight (p < 0.01). CBi+ and CBi-, harmonically large or small, differed between them and from the control line in both variables (p < 0.001). These findings further corroborate the proposal that bone mass is markedly affected by the skeleton function as support of soft tissues. The allometric analysis ofthe regression of femur weight on femur length suggests that, in this model, a) the demand posed by the selective pressure forced each genotype to find a unique Solution, b) this response is sex-dependent, and c) genetic determination ofthe parameters involved in this allometric relationship is, at least, partially independent.

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Identification of Genes Targeted in South African Merino and Afrino Sheep Populations Under Long-Term Selection for Reproduction and Body Weight

10.21203/rs.3.rs-128951/v1 ◽

2020 ◽

Author(s):

Margaretha Snyman ◽

Sunika Süllwald ◽

Willem Olivier ◽

Carina Visser

Keyword(s):

Body Weight ◽

South African ◽

Reproductive Performance ◽

Genome Wide Association Study ◽

Growth Traits ◽

Reproductive Traits ◽

Term Selection ◽

A Genome ◽

Selection For

Abstract Background: Reproductive performance and body weight are of the utmost economic importance in determining the efficiency of sheep production. Simultaneous selection for increased reproductive performance and early growth traits is a common strategy in many flocks, but ambiguous results regarding the relationship between reproduction and body weight have been reported. The objective of this study was to perform a genome-wide association study (GWAS) in two South African Merino flocks and an Afrino sheep flock that were selected for both reproduction and body weight over decades. The GWAS aimed to identify SNPs associated with genes affecting the traits number of lambs born (NLB), number of lambs weaned (NLW), total weight of lamb weaned (TWW) and body weight (BW) and thus to ascertain which genes were targeted through directional selection.Results: In the GWAS, 16 SNP markers associated with reproductive traits were identified among the three populations, while 15 SNPs were associated with body weight. These SNPs were linked respectively to 26 and 21 documented genes in the sheep genome. Most of these genes were previously associated in literature with reproduction related, as well as with growth related traits in various farm animal species. This study, supported by results from previous studies performed on sheep and cattle, identified the following genes that warrant further investigation as to their functions and processes relating to growth and reproduction in sheep: MAP7D1, TRAPPC3, THRAP3, TRMP8, SPP2, HDAC9, ZFHX3, SIX6, C14orf39, TAF4B, TRSP1 EYA2, RBMS3, STL38L, BSPH1, LIG1, CABP5 and ELSPBP1. Conclusions: Long-term selection in the flocks for both body weight and reproductive traits, and especially on the composite trait TWW, have favoured genes with pleiotropic effects influencing both groups of traits. SNPs associated with these pleiotropic genes were detected in the association analyses for the various traits.

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EFFECT OF SHORT-TERM DIVERGENT SELECTION FOR BODY WEIGHT AT 4 WEEK OF AGE IN JAPANESE QUAIL UNDER NORTH-SINAI CONDITIONS B. EFFECT ON GROWTH TRAITS

Sinai Journal of Applied Sciences ◽

10.21608/sinjas.2020.86512 ◽

2020 ◽

Vol 0 (0) ◽

pp. 0-0

Keyword(s):

Body Weight ◽

Japanese Quail ◽

Growth Traits ◽

Divergent Selection ◽

Short Term ◽

Selection For ◽

North Sinai ◽

Effect On Growth

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A 31-bp indel in the 5' UTR region of GNB1L is significantly associated with chicken body weight and carcass traits

10.21203/rs.3.rs-26694/v3 ◽

2020 ◽

Author(s):

Tuanhui Ren ◽

Ying Yang ◽

Wujian Lin ◽

Wangyu Li ◽

Mingjian Xian ◽

...

Keyword(s):

Body Weight ◽

G Protein ◽

Feed Efficiency ◽

Growth Traits ◽

Carcass Traits ◽

The Body ◽

Breast Muscle ◽

Protein Subunit ◽

Muscle Weight ◽

High Feed

Abstract Background: G-protein subunit beta 1 like ( GNB1L ) encodes a G-protein beta-subunit-like polypeptide. Chicken GNB1L is upregulated in the breast muscle of high feed efficiency chickens, and its expression is 1.52-fold that in low feed efficiency chickens. However, no report has described the effects of GNB1L indels on the chicken carcass and growth traits.Results: This study identified a 31-bp indel in the 5' untranslated region (UTR) of GNB1L and elucidated the effect of this gene mutation on the carcass and growth traits in chickens. The 31-bp indel showed a highly significant association with the body weight at 8 different stages and was significantly correlated with daily gains at 0 to 4 weeks and 4 to 8 weeks. Similarly, the mutation was significantly associated with small intestine length, breast width, breast depth and breast muscle weight. Moreover, DD and ID were superior genotypes for chicken growth and carcass traits.Conclusions: These results show that the 31-bp indel of GNB1L significantly affects chicken body weight and carcass traits and can serve as a candidate molecular marker for chicken genetics and breeding programs.

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A 31-bp indel in the 5' UTR region of GNB1L is significantly associated with chicken body weight and carcass traits

10.21203/rs.3.rs-26694/v4 ◽

2020 ◽

Author(s):

Tuanhui Ren ◽

Ying Yang ◽

Wujian Lin ◽

Wangyu Li ◽

Mingjian Xian ◽

...

Keyword(s):

Body Weight ◽

G Protein ◽

Feed Efficiency ◽

Growth Traits ◽

Carcass Traits ◽

The Body ◽

Breast Muscle ◽

Protein Subunit ◽

Muscle Weight ◽

High Feed

Abstract Background: G-protein subunit beta 1 like ( GNB1L ) encodes a G-protein beta-subunit-like polypeptide. Chicken GNB1L is upregulated in the breast muscle of high feed efficiency chickens, and its expression is 1.52-fold that in low feed efficiency chickens. However, no report has described the effects of GNB1L indels on the chicken carcass and growth traits. Results: This study identified a 31-bp indel in the 5' untranslated region (UTR) of GNB1L and elucidated the effect of this gene mutation on the carcass and growth traits in chickens. The 31-bp indel showed a highly significant association with the body weight at 8 different stages and was significantly correlated with daily gains at 0 to 4 weeks and 4 to 8 weeks. Similarly, the mutation was significantly associated with small intestine length, breast width, breast depth and breast muscle weight. Moreover, DD and ID were superior genotypes for chicken growth and carcass traits. Conclusions: These results show that the 31-bp indel of GNB1L significantly affects chicken body weight and carcass traits and can serve as a candidate molecular marker for chicken genetics and breeding programs.

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Anadolu-T Etlik Piliç Saf Hatlarının Gelişme ve Karkas Özellikleri

Turkish Journal of Agriculture - Food Science and Technology ◽

10.24925/turjaf.v9i11.1980-1987.4575 ◽

2021 ◽

Vol 9 (11) ◽

pp. 1980-1987

Author(s):

Musa Sarıca ◽

Kadir Erensoy ◽

İsmail Özkan ◽

Emrah Oğuzhan ◽

Sinan Çağlak

Keyword(s):

Body Weight ◽

Broiler Chickens ◽

Growth Traits ◽

Selection Process ◽

Carcass Traits ◽

Feed Conversion ◽

Selection History ◽

History Of ◽

Efficiency Test ◽

Pure Lines

This study aimed to determine the growth and carcass traits of Anadolu-T broiler pure lines, which were kept breeding and selection over five generations from 2017 to 2021, in comparison with a commercial hybrid. After the selection process, pure lines (A1, A2, A3, B1, B2) and commercial hybrid (Ross-308) eggs were incubated and 120 female-male chicks were produced from each genotype in each generation. The broiler chickens were reared in broiler production standards for 6 weeks and carcass traits were determined by slaughtering at the end of this period. In this study, growth traits such as body weight (BW), feed conversion ratio (FCR), and livability; breast and thigh meat ratio were considered as carcass traits. The highest average BW (2961.2 to 3481.2 g) and best FCR (1.43 to 1.60) at 6 weeks of age over the five generations occurred in Ross-308 commercial hybrids; followed by sire (BW: 2633.8 to 3180.2 g; FCR: 1.65 to 1.77), dam lines (BW: 2307.7 to 2698.5 g; FCR: 1.65 to 1.78), respectively. Although there were some numerical differences in livability between generations in pure lines, it was generally at a similar level (96-100%) with commercial hybrids. The breast ratio was lower than commercial hybrid in both dam and sire lines, but it was determined that the thigh ratio was higher in pure lines. The fact that pure lines have a short selection history of five generations does not allow for detailed evaluation. We expect that the use of individual feed efficiency test in dam and sire lines, and additionally using body weight and breast

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Estimation of genetic parameters for growth and carcass traits in turbot (<i>Scophthalmus maximus</i>)

Archives Animal Breeding ◽

10.5194/aab-62-265-2019 ◽

2019 ◽

Vol 62 (1) ◽

pp. 265-273 ◽

Cited By ~ 2

Author(s):

Kristina Schlicht ◽

Nina Krattenmacher ◽

Vincent Lugert ◽

Carsten Schulz ◽

Georg Thaller ◽

...

Keyword(s):

Body Weight ◽

Growth Traits ◽

Carcass Traits ◽

Genetic Correlations ◽

Daily Weight Gain ◽

Separate Analysis ◽

Production Traits ◽

Long Term Study ◽

Heritability Estimates ◽

Fillet Yield

Abstract. Information on phenotypic and genetic (co)variance for production traits in turbot is required to improve breeding programs. So far, information on morphometric growth traits is sparse and completely lacking on quality carcass traits like fillet weight or fillet yield for turbot. As part of a long-term study we explored the phenotypic and genetic (co)variance of 16 biometrical and carcass traits of three different European turbot strains. Fish were reared under commercial grow-out conditions, including size grading. We used molecular relatedness (MR) methods based on genotyping with 96 microsatellite markers and animal models. We included an adapted condition factor for Pleuronectiformes (FCIPLN) and average daily weight gain (ADG) between the ages of 300 and 500 d post-hatch (dph) for their potential correlation with body weight at harvest. Heritability estimates for all traits were low to medium (0.04–0.29) when strains were jointly analyzed. Separate analysis of strains yielded higher heritability estimates (0.12–0.43). Genetic correlations between weight-related traits were highly positive (0.70–0.99), while runs with yield and ratio traits often resulted in unreliable estimates of genetic correlation due to high standard errors. Body weight (h2=0.19), fillet yield (h2=0.15), and dressing percentage (h2=0.17) are particularly promising selection traits for turbot breeding.

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A 31-bp Indel in the 5' UTR region of the GNB1L gene is significantly associated with chicken body weight and carcass traits

10.21203/rs.3.rs-26694/v2 ◽

2020 ◽

Author(s):

Tuanhui Ren ◽

Ying Yang ◽

Wujian Lin ◽

Wangyu Li ◽

Mingjian Xian ◽

...

Keyword(s):

Body Weight ◽

G Protein ◽

Feed Efficiency ◽

Growth Traits ◽

Carcass Traits ◽

Breast Muscle ◽

Protein Subunit ◽

Muscle Weight ◽

Intestine Length ◽

High Feed

Abstract Background: G-protein subunit beta 1 like (GNB1L) can encode a G-protein beta-subunit-like polypeptide, the chicken GNB1L gene is up-regulated in the breast muscle of high-feed efficiency chickens, and its expression is 1.52-fold that of low-feed efficiency chickens. However, there are no reports describing the effects of GNB1L gene Indel on the chicken carcass and growth traits. Results: This study identified a 31-bp Indel in 5' UTR of the GNB1L gene and elucidated the effect of this gene mutation on the carcass and growth traits in chickens. The results showed that the 31-bp Indel was highly significant associations with body weight at 8 different stages, and also significantly correlated with daily gain of 0 to 4 weeks and 4 to 8 weeks. Similarly, the mutation was significantly associated with small intestine length, breast width, breast deep and breast muscle weight in carcass traits. Moreover, DD and ID are inferior genotypes for the growth and carcass traits of chickens. Conclusions: In a word, these results show that the 31-bp Indel of GNB1L gene is significantly affected chicken body weight and carcass traits, and can serve as a candidate molecular marker for chicken genetics and breeding programs.

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