Diluters for Bovine Semen. IV. Fertility of Bovine Spermatozoa in Heated Homogenized Milk and Skimmilk

Almquist, J.O.; Flipse, R.J.; Thacker, Deepika

doi:10.3168/jds.s0022-0302(54)91407-1

Cited by 36 publications

(9 citation statements)

References 3 publications

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“…Schaeffer (1993) reported the value of this trait ranging from 52.1 to 75.7% for exotic dairy breeds of different ages. Our results were slightly lower than those of Almquist et al (1954);Schaeffer (1993). Williamson et al (1978) reported NRR to first insemination from 58.2 to 69.3% for dairy herds in Victoria.…”

Section: Non-return Rate (Nrr %) Of Bullscontrasting

confidence: 56%

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Fertility and parasitic infestation of Red Chittagong cattle

et al. 1970

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Fertility of Red Chittagong bulls (RCB) using Non-Return Rate (NRR), reproductive efficiency of Red Chittagong cows (RCC) using pregnancy rate and number of services per pregnancy and parasitic infestation of two different ages and sexes were studied. The NRR ranged from 53.1% to 70.6% with an overall mean of 63.9%. Overall pregnancy rate was 65.8% and about 1.4 services were required per pregnancy. Overall 47.7% animals were infested with parasites. Five species of parasites were detected in the faeces: Balantidium coli (40%), Paramphistomum spp (47.7%), Fasciola spp (5.8%), Coccidia spp (4.5%), and Moniezia spp (1.9%). The prevalence of parasites in animals over four years age was higher (P<0.05) than in animals below four years of age: the prevalence was higher in female than in male hosts (P>0.05). (Bangl. vet.

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Section: Non-return Rate (Nrr %) Of Bullscontrasting

confidence: 56%

“…Almquist et al (1954) reported NRR for high fertility bulls from 65 to 74% and for low fertility bulls 52 to 65%. Schaeffer (1993) reported the value of this trait ranging from 52.1 to 75.7% for exotic dairy breeds of different ages.…”

Section: Non-return Rate (Nrr %) Of Bullsmentioning

confidence: 99%

Fertility and parasitic infestation of Red Chittagong cattle

et al. 1970

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“…Egg medium was kindly supplied by Mr J. Stables (Milk Marketing Board, Chase Farm, Bucks., U.K.). Milk medium was made according to the method of Almquist, Flipse & Thacker (1954), which consists of centrifuging pasteurized milk at 2000 g for 10 min, removing the cream, taking the underlying fat-free liquid from this slow speed spin and pelleting the milk solids by centrifugation at 48 000 g for 30 min. The clear supernatant is then heated at 92-96°C for 10 min, followed by the addition of 0-125 g D-fructose/ml and antibiotics (104 units penicillin + 10 mg streptomycin sulphate per 100 ml) when cool.…”

Section: Spermatozoamentioning

confidence: 99%

Flow microfluorometric analysis of living spermatozoa stained with Hoechst 33342

Keeler¹,

Mackenzie²,

Dresser³

1983

Reproduction

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“…Schaeffer (1993) and Fryer et al (1958) reported values from 52.1 to 75.7% and 44 to 71%, respectively, in different ages of exotic dairy breeds. Almquist (1995) reported the average non-return rate for high fertility bulls ranged from 65 to 74% and average non-return rate for low fertility bulls ranged from 52 to 65%. The result of this study falls within the range of the published literatures.…”

Section: Non-return Rate To First Service (Nrrfs)mentioning

confidence: 99%

Genetic and phenotypic parameter on fertility traits of Red Chittagong Cattle in Bangladesh

2013

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The fertility of Red Chittagong Cattle (RCC) of Bangladesh was studied using data from 122 animals from four herds. The least squares means of female fertility traits were 1.4 ± 0.1, 72.6 ± 3.6% and 85.0 ± 2.0%, respectively, for number of services per pregnancy, first service pregnancy rate and overall pregnancy rate. The least squares mean of non-return rate to first service of bull was 58.7 ± 5.1%. The factor having a significant effect on female fertility was herd, while parity had no effect. Herd and parity of dam, season of service and sire had no effect on non-return rate to first service of bull. The heritability of fertility traits were very low: values were 0.07 ± 0.04, 0.03 ± 0.04, 0.05 ± 0.04 and 0, respectively, for number of services per pregnancy, first service pregnancy rate, overall pregnancy rate and non-return rate to first service of bull. The corresponding repeatability values were 0.18 ± 0.08, 0.08 ± 0.07, 0.13 ± 0.08 and -0.07 ± 0.02, respectively. This study reveals the fertility to be good. However, better reproductive management may enhance the overall herd fertility of RCC. (Bangl. vet.

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Diluters for Bovine Semen. IV. Fertility of Bovine Spermatozoa in Heated Homogenized Milk and Skimmilk

Cited by 36 publications

References 3 publications

Fertility and parasitic infestation of Red Chittagong cattle

Fertility and parasitic infestation of Red Chittagong cattle

Flow microfluorometric analysis of living spermatozoa stained with Hoechst 33342

Genetic and phenotypic parameter on fertility traits of Red Chittagong Cattle in Bangladesh

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