Performance of Hereford and crossbred Hereford cattle in the subtropics of New South Wales: growth of first-cross calves to weaning

Barlow, R; O'Neill, GH

doi:10.1071/ar9781313

Cited by 17 publications

(16 citation statements)

References 19 publications

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“…Present results are in agreement with previous reports indicating longer gestation lengths for zebu than for European breeds, and intermediate lengths for their crosses (Andersen and Plum, 1965;Wijeratne, 1970;Tomar and Arora, 1972;Barlow and O'Neill, 1978;Melucci, Miquel and Molinuevo, 1978;Gregory, Smith, Cundiff, Koch and Laster, 1979;Reynolds, De Rouen, Moin and Koonce, 1980). HF calves had a gestation length of 277-9 (s.e.…”

Section: Discussionsupporting

confidence: 93%

“…-21-9 2-1 15-8 2-6 6-9 2-2 -1-5 1-2 287-2 days. Thus, g 1 values of -21 and -18 days were obtained for the difference HF -Brahman, from the results of Barlow and O'Neill (1978) and Melucci et al (1978), respectively, and g 7 = -17 days for HF -Hariana from Tomar and Arora (1972). 276-3 -287-2 = -10-9 days, is similar to the predicted difference of -7-9 days obtained by adding g 1 and g M estimates, averaged over sexes (Table 7).…”

Section: Discussionmentioning

confidence: 83%

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Comparative performance of six Holstein-Friesian × Guzera grades in Brazil 1. Gestation length and birth weight

Lemos¹,

Teodoro²,

Barbosa³

et al. 1984

Anim. Sci.

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Gestation length and birth weight of 939 calves born at Santa Monica Experimental Station, Valenc,a, State of Rio de Janeiro, were studied. The calves were of six red and white Holstein-Friesian (HF) x Guzera (G) grades: 1/4, 1/2, 5/8, 3/4, 7/8 and =s 31/32.As the grade x sex interaction for birth weight was significant, data for each sex were analysed separately. A model, including the effects of grade, year-season of birth, grade x year season interaction and age of dam as a covariate, resulted in the following least-square means for the six grades in the above order (± s.e.): gestation length for cows carrying male calves, 290-0 (± 0-9), 281-2 (± 0-9), 285-3 (± 0-8), 278-8 (± 0-9), 280-5 (± 0-9) and 279-3 (± 0-9) days; gestation length for female calves, 287-5 (± 0-9), 280-1 (± 1-0), 285-3 (± 0-9), 274-5 (± 1-1), 279-2 (± 0-9) and 276-4 (± 1-0) days; birth weight for males, 34-6 (± 0-7), 28-6 (± 0-8), 34-2 (± 0-7), 32-4 (± 0-7), 35-0 (± 0-7) and 34-7 (± 0-7) kg; birth weight for females, 29-9 (± 0-6), 29-5 (± 0-7), 33-4 (± 0-6), 31-9 (± 0-7), 33-6 (± 0-6) and 32-6 (± 0-6) kg.Direct (g 1 ) and maternal (g M ) breed additive effects (HF -G), and direct (h 1 ) and maternal heterosis \h M ) were estimated. The estimates of g 7 , g M , h 1 and h M were respectively, for gestation length for male calves: -21-5 (± 1-9), 10-6 (± 2-1), 1-5 (± 1-8) and -1-6 (± 11) days; for gestation length, for female calves: -21-9 (± 2-1), 14-6 (± 2-5), 5-7 (± 2-1) and -1-5 (± 1-2) days; for birth weight of male calves: -3-5 (+ 1-5), 7-1 (± 1-8), -0-6 (± 1-5) and 1-0 (± 0-9) kg; and for birth weight of female calves: 4-7 (+ 1-4), 4-1 (± 1-6), 2-8 (± 1-3) and 2-0 (± 0-8) kg. The difference in birth weight between males and females was 4-7 (± 0-9) for G-sired calves and 0-8 (± 0-4) for HF-sired calves. 157

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 83%

Comparative performance of six Holstein-Friesian × Guzera grades in Brazil 1. Gestation length and birth weight

Lemos¹,

Teodoro²,

Barbosa³

et al. 1984

Anim. Sci.

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“…Until weaning, they were reared on medium quality pastures. Details of the environment, genetic design and growth up to weaning are provided by Barlow & O'Neill (1978, 1980. Hearnshaw et al (1989) reported the growth of these females from weaning to 30 months of age, and Barlow et al (1988) provided details of the pasture systems and stocking rates.…”

Section: Methodsmentioning

confidence: 99%

“…The initial studies at Grafton involved the preweaning growth of calves, and postweaning growth of steers, by Bos indicus (Brahman), large European (Simmental), dairy (Friesian) and British (Hereford) breed sires all mated to Hereford females as reported by Barlow & O'Neill (1978, 1980 and Darnell et al, (1987). The results indicated significant genotype x environment interactions, with Simmental and Friesian crossbreds having greater response to improved conditions, while Brahman crossbreds maintained a relatively constant growth advantage over the Herefords regardless of environmental conditions.…”

mentioning

confidence: 99%

Evaluation of Hereford and first-cross cows on three pasture systems. I. Calf growth and reproductive performance of young cows

et al. 1994

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SUMMARYHereford (H × H), Brahman × Hereford (B × H), Simmental × Hereford (S × H) and Friesian × Hereford (F × H) females born over a 5-year period (1973–77) were placed on pastures of high, medium or low nutritive value at Grafton, New South Wales, Australia, at weaning (7–8 months of age). The first mating of heifers on high pasture was at 15 months (1974) while that on medium and low pastures was delayed until 27 months of age (1975). This paper reports the reproductive performance of these cows up to 5 years of age and the preweaning growth of their calves which were sired by Hereford bulls at Grafton, Australia. In total, 1222 calving records were analysed.Most traits were subject to interaction between genotype and other main effects (pasture, year of birth of cow, cow age and sex of calf). Eyelid pigmentation was an exception, with calves from B × H cows having more than calves of other genotypes (73 v. 43%). There were significant genotype differences in calving difficulty among 2-year-old heifers only, with H × H (33%) requiring more assistance than F × H (15%) and SxH (10%) heifers, while B × H heifers did not require any assistance. Genotype differences in percentage of calves born and weaned were observed on low pastures only, where B × H (66% born, 65% weaned) exceeded H × H (48%, 39%) and S × H (39%, 38%) cows, with F × H (58%, 50%) cows being intermediate. Calves by H × H cows were the slowest-growing and were the lightest at weaning on all pastures, with mean gains of 759, 604 and 340 g/day, and mean weaning weights of 212, 188 and 110 kg, on high, medium and low quality pastures, respectively. F × H and S × H cows produced the fastest-growing calves on high quality pasture (966 and 936 g/day, respectively) while B × H cows produced the fastest-growing calves on medium (823 g/day) and low (679 g/day) quality pastures. F × H cows weaned the heaviest calves on high quality pasture (274 kg) while F × H and B × H weaned the heaviest calves on medium (230 and 229 kg, respectively) and low (162 and 169 kg, respectively) quality pastures. Differences in body measurements followed a pattern similar to weaning weight.

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“…These females were born between 1973 and 1977 inclusive, and their parentage and history to weaning have been described by Barlow & O'Neill (1978, 1980. At weaning (7-8 months) they were randomly allocated to one of three pasture systems for lifetime evaluation (Hearnshaw & Barlow, 1982).…”

Section: Pastures and Cattlementioning

confidence: 98%

Dry-matter intake of Hereford and first-cross cows measured by controlled release of chromic oxide on three pasture systems

et al. 1988

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SummaryFaecal output of 287 beef cows consisting of Hereford (H × H), Simmental × Hereford (S × H), Friesian × Hereford (F × H) and Brahman × Hereford (B × H) breeding was estimated using controlled release of chromic oxide (Cr2O3). All cows were from 6 to 10 years of age and had grazed on one of three pasture systems in the subtropics of New South Wales since they were 7–8 months of age. These pastures were designated as being of high, medium and low nutritive value. Faecal organic matter output (FOMO) was estimated in each of four periods (early lactation, mid lactation, late lactation, and non-lactating) during one annual production cycle.Herbage mass exceeded 2 t/ha on all pasture systems, but estimates of organic-matter digestibility, nitrogen content and pasture composition indicated large differences in pasture quality (high > medium > low). Live weight of cows averaged 604, 488 and 393 kg live weight on the high, medium and low pastures, respectively. There were significant differences in live weight between genotypes on the medium (B × H > F × H and H × H) and low (S × H ≡ F × H ≡ B × H > H × H) pastures but not on the high pasture).FOMO and dry-matter intake (DMI) differed significantly between genotypes among lactating cows on all pasture systems. Rankings on high pastures were reasonably consistent in all periods: S × H ≡ F × H ≥ B × H ≥ H × H, as were those on low pastures, B × H ≥ S × H ≡ F × H ≥ H × H. Differences on medium pastures were significant only during mid-lactation when B × H ≡ S × H ≡ F × H > H × H. Significant differences between genotypes were observed among non-lactating cows on high pastures only, where H × H ≡ S × H ≡ F × H > B × H. Lactating females had significantly higher FOMO and DMI than non-lactating females when compared across genotypes during early lactation on all pastures.

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Performance of Hereford and crossbred Hereford cattle in the subtropics of New South Wales: growth of first-cross calves to weaning

Cited by 17 publications

References 19 publications

Comparative performance of six Holstein-Friesian × Guzera grades in Brazil 1. Gestation length and birth weight

Comparative performance of six Holstein-Friesian × Guzera grades in Brazil 1. Gestation length and birth weight

Evaluation of Hereford and first-cross cows on three pasture systems. I. Calf growth and reproductive performance of young cows

Dry-matter intake of Hereford and first-cross cows measured by controlled release of chromic oxide on three pasture systems

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