Pre-weaning performance of Hereford, Angus, Salers and Nellore crossbred calves: Individual and maternal additive and non-additive effects

Lema, O. M.; Gimeno, D.; Dionello, Nelson José Laurino; Navajas, E. A.

doi:10.1016/j.livsci.2011.08.007

Cited by 10 publications

(6 citation statements)

References 16 publications

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“…These authors measured the calving day within an 84‐day calving season and reported that H cows, which mated with A and Shorthorn bulls were the last to calve. The same authors reported that when British breeds (A) were used as sires, the gestation period reduced, contrarily, it increased when Zebu breeds such as N were used as sires (Cundiff et al., 1998; Lema et al., 2011).…”

Section: Resultsmentioning

confidence: 99%

Reproductive performance of Angus, Hereford, Salers and Nellore crossbred females: Additive and non‐additive effects

Boggio

Lema

Aguilar

et al. 2021

J Animal Breeding Genetics

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Reproductive traits in breeding herds can be improved through crossbreeding, which results in breed differences, heterosis and breed complementarity. The aim of this study was to estimate group additive genetic and dominance effects for three reproductive traits; probability of artificial insemination (AIP); calving success (CS); and days to calving (DC) for Hereford (H), Angus (A), Nellore (N) and Salers (S) breeds under grazing conditions. Data were obtained from an experiment carried out during 1992-2002 by the

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Section: Resultsmentioning

confidence: 99%

Reproductive performance of Angus, Hereford, Salers and Nellore crossbred females: Additive and non‐additive effects

Boggio

Lema

Aguilar

et al. 2021

J Animal Breeding Genetics

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“…Crossbred dams in crossing native breeds with imported breeds' trials have been reported to produce higher calf birth weight than the native. Positive estimates of h M and in favour of the crossbred dams were reported by Haile et al (2011), Lema et al (2011) and Leal and MacNeil (2018). Table (5).…”

Section: Maternal Heterosis (H M )mentioning

confidence: 90%

“…Information about the genetic parameters and differences between breeds are essential to evaluate the suitability of breeds for crossbreeding, (Brandt et al, 2010). The estimation of the crossbreeding parameters is affected by type, numbers and by the estimability problems of genetic groups included in the crossbreeding experiment, (Lema et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Estimation of Genetic and Crossbreeding Parameters for Birth Weight in Baladi Cattle and their Crosses with Abondance and Tarentaise Breeds in Egypt

Abdelharith

2019

Journal of Animal and Poultry Production

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Genetic and crossbreeding parameters for birth weight (BWT) were estimated in pure Baladi (BB), Abondance (AB) with BB crossbred and Tarentaise (TR) with BB crossbred calves. Data were collected from breeders in two governorates and from Sids Experimental Farm belonging to Animal Production Research Institute. Data included 9334 records of calves born for 174 sires and 5182 dams. Data consisted of seven genotypes; BB, ½ AB/TR ½ BB, ¾ AB/TR ¼ BB and ⅞ AB/TR ⅛ BB. Group differences were highly significant, (P<0.0001). Least squares means of BWT were 22.3, 32.4, 32.4 and 32.6 kg for BB, ½ AB, ¾ AB and ⅞ AB, respectively and were 32.0, 32.0 and 31.9 kg for ½ TR, ¾TR and ⅞ TR, respectively. Individual and maternal additive and maternal heterosis effects were studied, variance components and heritability estimates were estimated. The individual additive effects of AB and TR for BWT were significant being-9.98 kg and-9.43 kg, respectively. Maternal additive effects were significant and positive being 4.86 kg and 4.81 kg for AB and TR, respectively. Maternal heterosis estimates were non-significant with small magnitude and was negative for AB crossbreds (-0.06 kg) and was positive for TR crossbreds (0.12 kg). Heritability estimates for BWT were 0.16, 0.51 and 0.55 for BB, AB crossbreds and TR crossbreds, respectively. In general, Crossbred calves of AB or TR were higher in BWT than pure BB calves. Individual additive effects show an advantage for AB and TR crossbreds, while maternal additive effects expressed the superiority of the BB dams over the crossbred dams. Results reveal that genetic improvement of BWT in BB could be achieved by crossing with AB or TR breeds for higher BWT.

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“…No supplementary feed was provided during the experimental period. See Lema et al (2011) for a detailed description of general management on the herd. Two codes were defined to assign to each record the physiological and lactation status affecting MW.…”

Section: Datamentioning

confidence: 99%

Additive and non-additive effects for mature weight in beef cattle

Guillenea

Lema²,

Gimeno³

et al. 2020

ALPA

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Selection has emphasized animal growth, leading to an increase in their mature size affecting in some cases the pregnancy of the cows and the efficiency of the systems. Usually, crossbreeding improve productivity because of the genetic effects that the cows exploit, but the impact on mature weight (MW) has not been studied. The present study aimed at estimating MW and genetic parameters associated with the MW in crosses between two British breeds: Hereford (H/H) and Angus (A/A), a Continental: Salers (S/S), and a Zebu: Nelore (N/N). MW was analyzed at 4; 4.5; 5; 5.5 and 6 years of age using a repeated-measure sire model. For parameters estimation, an additive – dominant model was used including the fixed effects of breed group, contemporary group, and age as covariate linear and quadratic, with the linear regression fitted by breed group. Permanent environmental and sire were included as random effects. According to the results, it is expected to observe heterosis between H/H and N/N, however, the structure of the data may not be enough for estimate accurately the genetic parameters in this trait. The A/H, N/H, S/H, S/SH and H/NH cows were heavier than the H/H cows. All the breed groups continue gaining weight until six years of age. The results revealed that British crossbred animals are heavier than H/H at the first crossing but not in the following. Crossbred cows with proportions of 0.5 and greater for the Continental breed are heavier than H/H cows. Crosses between British and Zebu cows have higher mature weight than H/H at the first crossing and in backcrosses toward the British in all ages.

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Pre-weaning performance of Hereford, Angus, Salers and Nellore crossbred calves: Individual and maternal additive and non-additive effects

Cited by 10 publications

References 16 publications

Reproductive performance of Angus, Hereford, Salers and Nellore crossbred females: Additive and non‐additive effects

Reproductive performance of Angus, Hereford, Salers and Nellore crossbred females: Additive and non‐additive effects

Estimation of Genetic and Crossbreeding Parameters for Birth Weight in Baladi Cattle and their Crosses with Abondance and Tarentaise Breeds in Egypt

Additive and non-additive effects for mature weight in beef cattle

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