Heterosis in cattle crossbreeding schemes in tropical regions: meta-analysis of effects of breed combination, trait type, and climate on level of heterosis1

Bunning, Harriet; Wall, E.; Chagunda, M. G. G.; Banos, Georgios; Simm, G.

doi:10.1093/jas/sky406

Cited by 33 publications

(30 citation statements)

References 30 publications

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“…According to Yakubu and Ibrahim (2011), phenotypic distance measures can be used as a baseline for designing a breeding program of the population. Breeding processes between livestock animals with high phenotypic distances may yield appreciable heterosis concerning most economic traits (Bunning et al 2019). Crossing individuals from distant populations will enhance variability compared to crossing individuals from tightly connected populations.…”

Section: Phenotypic Relationships Between Indigenous Buffaloes From Bmentioning

confidence: 99%

Morphometric diversity and phenotypic relationship among indigenous buffaloes of Banten, Indonesia

Murni¹,

Lestari²,

Indriwati³

et al. 2020

Biodiversitas

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Abstract. Murni D, Lestari U, Indriwati SE, Efendi A, Maryani N, Amin M. 2020. Morphometric diversity and phenotypic relationship among indigenous buffaloes of Banten, Indonesia. Biodiversitas 21: 933-940. This study aimed to describe the morphometric diversity and phenotypic relationship among indigenous buffaloes of Banten, Indonesia. In this study, 125 buffaloes from six regions were investigated based on 11 morphometric characters. Morphometric diversity was analyzed using multivariate discriminant analysis. The Euclidean genetic distances were used to estimate the phenotypic relationship among the buffalo populations. The indigenous buffaloes of Banten have high morphometric diversity, with a coefficient from 2.83 to 41.43%. The body length and chest circumference can be used as a morphometric marker to determine potential indigenous buffaloes as their high correlation coefficient value (0.506). The Serang district buffaloes have the highest mean of body length and chest circumference, which shows that this population is potential compared to the populations from other regions. The morphometric of buffalo population from Serang City, Cilegon City, Serang District, and Pandeglang District tend to be homogenous. Meanwhile, Lebak and Tangerang District population tends to heterogeneous. According to Euclidean distance analysis, the proximate phenotypic relationship was between Serang and Pandeglang District's buffalo populations. Our results indicated that morphometric diversity and phenotypic relationships of the populations were related to geographical origins and can be used to determine the potential indigenous of buffaloes.

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Section: Phenotypic Relationships Between Indigenous Buffaloes From Bmentioning

confidence: 99%

Morphometric diversity and phenotypic relationship among indigenous buffaloes of Banten, Indonesia

Murni¹,

Lestari²,

Indriwati³

et al. 2020

Biodiversitas

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“…Similarly, taurine-indicine heterosis effects were found to be significant for estimates of growth curve parameters, total milk yield, calf weaning weight, predicted energy intake by cows and cow efficiency, and greater than those for taurine breed crosses (Mendonça et al, 2019). However, an even greater benefit of heterosis was observed expressed in crosses of breeds adapted to different environments (Bunning et al, 2019). Because the Sanga cattle breeds are likely to be composites between Bos taurus and Bos indicus (Hanotte et al, 2002;Makina et al, 2016), this may in part explain their adaption to the South African environment.…”

Section: Introductionmentioning

confidence: 87%

Genetic effects from an Afrikaner, Bonsmara, and Nguni three-breed diallel and top-crosses of Angus and Simmental sires

Pyoos¹,

Scholtz²,

MacNeil³

et al. 2020

SA J. An. Sci.

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Individual and maternal breed additive effects and heterosis exist for most economically important traits in cattle. Crossbreeding may therefore be valuable for emerging and commercial beef farmers in improving the productivity of their herds. Calves were produced by mating Afrikaner, Bonsmara and Nguni cows to Afrikaner, Bonsmara, Nguni, Angus and Simmental bulls. The cows used were from Vaalharts Research Station or were purchased from other herds. Data were collected over three years. Individual and maternal additive effects and individual heterosis were estimated simultaneously as continuous linear variates. The estimated genetic effects were then used to predict production levels that may be achieved through implementation of top-cross, two-breed rotation, and terminal sire crossbreeding systems. The individual estimates of the genetic effects were relatively small and in most cases were not different from zero, with the exception of the maternal additive effects of Nguni on preweaning traits and their individual additive effect on cow weight, which were less than those of Bonsmara. However, the alternative crossbreeding systems differed across traits. The straight-bred breeding system was least efficient, followed by the crisscross system (+2%) and the terminal sire system that utilized Simmental (+4%), with the terminal sire system utilizing Angus being on average most efficient (+8%). The inter-generational genetic differences in cow weight that resulted from the use of different breeds of sire increased its standard deviation by 5 to 6% in rotational crossing. Despite the relatively small magnitude of the genetic effects, advantages of crossbreeding systems became evident.Keywords: breed additive, crossbreeding, heterosis, post-weaning, pre-weaning

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“…In contrast, compromised reproductive performance of crossbred animals is a major constraint faced by the farmers in these countries. Studies conducted on crossbreeding schemes in tropical regions revealed that milk production showed higher (35.13%) heterosis but fertility showed only moderate (12.02%) heterosis ( Bunning et al, 2019 ). Since the focus was on milk production, reproduction was frequently overlooked, with the result that infertility problems in crossbred cattle persist.…”

Section: Introductionmentioning

confidence: 99%

Cellular and Molecular Insights Into the Etiology of Subfertility/Infertility in Crossbred Bulls (Bos taurus × Bos indicus): A Review

Kumaresan

Elango

Datta

et al. 2021

Front. Cell Dev. Biol.

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Crossbreeding of indigenous cattle (Bos indicus) with improved (Bos taurus) breeds gained momentum and economic relevance in several countries to increase milk production. While production performance of the crossbred offspring is high due to hybrid vigor, they suffer from a high incidence of reproductive problems. Specifically, the crossbred males suffer from serious forms of subfertility/infertility, which can have a significant effect because semen from a single male is used to breed several thousand females. During the last two decades, attempts have been made to understand the probable reasons for infertility in crossbred bulls. Published evidence indicates that testicular cytology indices, hormonal concentrations, sperm phenotypic characteristics and seminal plasma composition were altered in crossbred compared to purebred males. A few recent studies compared crossbred bull semen with purebred bull semen using genomics, transcriptomics, proteomics and metabolomics; molecules potentially associated with subfertility/infertility in crossbred bulls were identified. Nevertheless, the precise reason behind the poor quality of semen and high incidence of sub-fertility/infertility in crossbred bulls are not yet well defined. To identify the underlying etiology for infertility in crossbred bulls, a thorough understanding of the magnitude of the problem and an overview of the prior art is needed; however, such systematically reviewed information is not available. Therefore, the primary focus of this review is to compile and analyze earlier findings on crossbred bull fertility/infertility. In addition, the differences between purebred and crossbred males in terms of testicular composition, sperm phenotypic characteristics, molecular composition, environmental influence and other details are described; future prospects for research on crossbred males are also outlined.

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Heterosis in cattle crossbreeding schemes in tropical regions: meta-analysis of effects of breed combination, trait type, and climate on level of heterosis1

Cited by 33 publications

References 30 publications

Morphometric diversity and phenotypic relationship among indigenous buffaloes of Banten, Indonesia

Morphometric diversity and phenotypic relationship among indigenous buffaloes of Banten, Indonesia

Genetic effects from an Afrikaner, Bonsmara, and Nguni three-breed diallel and top-crosses of Angus and Simmental sires

Cellular and Molecular Insights Into the Etiology of Subfertility/Infertility in Crossbred Bulls (Bos taurus × Bos indicus): A Review

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