A STUDY ON REPRODUCTION AND FERTILITY OF ACHAI CATTLE AT DIR, (L) PAKISTAN

A revised study was conducted at Livestock Research and Development Station Dir,Lower Khyber Pakhtunkhwa (KPK) Pakistan to document the fertility and reproductive characteristics of Achai cattle. Three different characteristics i.e. gestation period, calving interval and birth weight were studied. 25 animals were observed for gestation period, 24 for calving intervals and 40 new born were weighed for birth weight respectively. Mean gestation period, calving interval and birth weight wererecordedto be 274.84Ã‚Â±17.31, 446.38Ã‚Â±37.14 days and 16.25Ã‚Â±2.44 kgs respectively.

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Lifetime productivity of crossbred cows. 2. Age and weight at first oestrus, calf birth weight, assisted calvings, calving interval and reproduction rate

Australian Journal of Experimental Agriculture ◽

10.1071/ea9910293 ◽

1991 ◽

Vol 31 (3) ◽

pp. 293 ◽

Cited By ~ 11

Author(s):

S Newman ◽

MP Deland

Keyword(s):

Birth Weight ◽

Late Onset ◽

Backcross Progeny ◽

Arid Environment ◽

Reproduction Rate ◽

Calving Interval ◽

Early Puberty ◽

Calving Rate ◽

Natural Service ◽

Calving Intervals

Crossbred heifers were born in 1974 from 7 breeds of cattle by mating Hereford bulls to Shorthorn cows, Hereford bulls to Friesian cows (calves double-suckled), Hereford bulls to Jersey cows (and Jersey bulls to Hereford cows), and using semen or natural service of Sahiwal, Charolais, Simmental and Brahman bulls on Hereford cows. Breed differences were important sources of variability for age and weight at first oestrus. The heifers were joined with Hereford bulls to produce backcross progeny during the years 1976-84 in a semi-arid environment. Parity (confounded with year and age of dam) and its interaction with breed had significant effects on frequency of assisted calvings, birth weight, calving rate and weaning rate. On average, over all parities, European cross dams (Charolais, Simmental) had calves of higher birth weight than other types but also had more assisted calvings, a lower calving rate and longer calving interval. Dairy cross dams (Friesian, Jersey) had early puberty, short calving intervals, few assisted calvings and higher calving rates. Zebu cross cows (Brahman, Sahiwal) had poor early reproductive performance due to late onset of oestrus, but similar or better subsequent calving rates and calving intervals. Their calves had lower birth weights but required similar assistance to Europeans. Shorthorn cross cows had similar calving intervals and more assisted calvings than other types in spite of their calves having average birth weights.

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Morphometric Characteristics and Reproductive Performance of Pasundan Cattle in the North Prianganese and Southern South Coast Region

Journal of Zoological Research ◽

10.30564/jzr.v3i2.3087 ◽

2021 ◽

Vol 3 (2) ◽

Author(s):

Mas Yedi Sumaryadi ◽

Euis Nia Setiawati ◽

Agus Triyanto ◽

Vony Armelia

Keyword(s):

Birth Weight ◽

Body Length ◽

Reproductive Performance ◽

Conception Rate ◽

Chest Circumference ◽

Calving Interval ◽

Morphometric Characteristics ◽

Reproductive Characteristics ◽

Calving Rate ◽

Postpartum Estrus

This study aims to determine the morphometric characteristics and reproductive performance of Pasundan cows which are extensively reared on smallholder farms in the coastal areas of the south (Garut, Cianjur, and Sukabumi) and North Priangan (Bogor, Purwakarta, and Sumedang). This research is descriptive research with a qualitative approach. Production characterization was carried out using a simple method, namely by measuring the body surface including shoulder height, chest circumference, body length, and bodyweight of Pasundan cattle. Meanwhile, the reproductive characteristics discuss puberty, service per conception (S / C), conception rate (CR), calving rate, postpartum estrus, postpartum mating, days open (DO), calving interval (CI), calving birth weight, and calving rate. calves weight growth. Data were collected by survey, the location was determined by purposive sampling in the area of the seed source with the largest population and the random sampling of livestock was determined purposively as many as 30 Pasundan cows from each region. Data were analyzed using quantitative descriptive analysis. The results showed that the morphometric characteristics of Pasundan cattle included mean shoulder height of 123.0 0 ± 3.06a cm VS 121.34 ± 2.82a in males and 110.34 ± 2.78 vs 108.00 ± 2.14a in females. Body length 115.74 ± 3.30 cm VS 115.34 ± 2.97acm in males and 112.67 ± 2.97cm VS 109.67 ± 1.82 cm in females. Chest circumference 145.67 ± 2.97cm VS 142.67 ± 2.67cm bulls and 136.00 ± 2.95cm VS 131.00 ± 2.92cm in females, Bodyweight 268.0 ± 17.00 kg VS 246.00 ± 7.00a for males and 215.0 ± 15.00 kg VS 194.00 ± 54.00kg in females. As for reproductive characteristics, it shows puberty of 20-24 months., S / C 1.4 - 1.6, Conception rate 65-70%, calving rate 62.5-65%, Postpartum Estrus 50-60 days, postpartum mating 72-104 days, day -open 94-126 days and a calving interval of 12-14 months. Calves' birth weight was 18.0 - 18.5 kg and daily body weight gain ranged from 0.48 to 0.50 kg. It was concluded that the morphometric characteristics and reproductive performance of Pasundan cattle in the Pesisir Selatan area were better than North Priangan.

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Reproductivity, Productivity and Management System of Indigenous Buffalo (Bubalus bubalis) Cows in Costal Areas of Pirojpur and Borguna District of Bangladesh

Progressive Agriculture ◽

10.3329/pa.v24i1-2.19113 ◽

2014 ◽

Vol 24 (1-2) ◽

pp. 117-122 ◽

Cited By ~ 3

Author(s):

MR Karim ◽

MZ Hossain ◽

MR Islam ◽

MS Parvin ◽

MA Matin

Keyword(s):

Birth Weight ◽

Milk Yield ◽

Management System ◽

Post Partum ◽

Bubalus Bubalis ◽

Gestation Length ◽

Calving Interval ◽

Lactation Length ◽

Daily Milk Yield ◽

Daily Milk

Twenty five buffalo cows of Mothbaria Upazila of Pirojpur district and another twenty five indigenous buffalo cows of Pathorghata Upazila of Borguna district of Bangladesh were randomly selected and interviewed to collect data on reproductivity (gestation length, birth weight, age of first calving, post partum heat and calving interval), productivity (lactation length and daily milk yield) and management system (general management, housing, feeding, calf rearing and treatment facilities) of indigenous buffalo cows using pre-tested questionnaire during the period from January to June 2010. The reproductive parameters including gestation length, birth weight, age of first calving, post partum heat and calving interval of Mothbaria Upazila of Pirojpur district were 319.56 ± 5.93 days, 24.28 ± 4 kilograms, 50.88 ± 1.71 months, 153.6 ± 6.13 days, 547.92 ± 10.88 days respectively whereas in case of Pathorghata Upazila of Borguna district these parameters were 319.12 ± 4.69 days, 24.12 ± 3.6 kilograms, 51 ± 1.8 months, 153.44 ± 6.78 days, 547.24 ± 14.32 days respectively. The productive parameters including lactation length and daily milk yield of Mothbaria Upazila of Pirojpur district were 286.12 ± 11.27 days and 3.33 ± 0.68 liters/day respectively while in case of Pathorghata Upazila of Borguna district these parameters 290.44 ± 10.92 days and 3.43 ± 0.744 liters/day respectively. So, reproduction and production are almost regular comparing with other published reports with the exception of age of first calving which is almost 12 months later than the buffaloes of other countries. It could be concluded that the buffalo owners of these areas do not follow any scientific method of buffalo husbandry; they just follow traditional rearing system. The farmers mostly use buffaloes for draught purpose in these costal areas.DOI: http://dx.doi.org/10.3329/pa.v24i1-2.19113 Progress. Agric. 24(1&2): 117 - 122, 2013

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Maternal inheritance on reproductive traits in Brangus-Ibagé cattle

Ciência Rural ◽

10.1590/s0103-84782004000400030 ◽

2004 ◽

Vol 34 (4) ◽

pp. 1163-1167 ◽

Cited By ~ 1

Author(s):

Luis Ernani Henkes ◽

Magda Vieira Benavides ◽

João Francisco Coelho Oliveira ◽

José Carlos Ferrugem Moraes ◽

Tania Azevedo Weimer

Keyword(s):

Birth Weight ◽

Heritability Estimate ◽

Reproductive Traits ◽

Direct Selection ◽

Calving Interval ◽

Age At First Calving ◽

Linear Effect ◽

Mtdna Mutations ◽

D Loop ◽

Additive Genetic Effects

Cytoplasmic inheritance influence on reproductive traits was investigated in the Brangus-Ibagé cattle (3/8 Nelore x 5/8 Aberdeen Angus). Additive genetic effects were responsible for 12% ± 11% of phenotypic variation observed in first calving interval, but their contribution dropped to zero when all calving intervals (CI) were considered. The heritability estimate for age at first calving (AFC, in days) was 0.19 ± 0.09. Mitochondrial lineage (MIT) had negligible effects on phenotypic variances of calving interval (0.0 ± 0.02), calf birth weight (0.0 ± 0.01), and cow weight at calving (0.0 ± 0.01). However, for the age at first calving, MIT accounted for 0.15 ± 0.07 of total variation. Cow weight at calving had a significant linear effect on CI and AFC. Three D-loop mtDNA mutations significantly affected either calving interval (T®C at sites 16,113 and 16,119) or calf birth weight (T®C at site 16,113). The C variants had decreased CI (29 and 32 days, respectively) and increased calf weight (0.6kg). Although the effects were small, direct selection for these mutation-carrier cows might improve the reproductive and developmental performance in this herd.

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Effect of supplementary feeding of pregnant women on birth weight of the new born

Plant Foods for Human Nutrition ◽

10.1007/bf02310627 ◽

1991 ◽

Vol 41 (4) ◽

pp. 329-336 ◽

Cited By ~ 5

Author(s):

Nargis Begum ◽

Tajammal Hussain ◽

Bilquis Afridi ◽

A. Hamid

Keyword(s):

Birth Weight ◽

Pregnant Women ◽

Supplementary Feeding ◽

New Born

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Cryptorchidism in the Newborn

PEDIATRICS ◽

10.1542/peds.51.2.310 ◽

1973 ◽

Vol 51 (2) ◽

pp. 310-311

Author(s):

Alfredo Santesteban

Keyword(s):

Birth Weight ◽

Low Birth Weight ◽

Reproductive Performance Of Bali Cattle Cross Breed Brahman Cattle Through Improving The Genetic Quality Of Local Livestock In Special Effort for Cows to be Pregnant Program

Tarjih Tropical Livestock Journal ◽

10.47030/tropical.v1i1.21 ◽

2021 ◽

Vol 1 (1) ◽

pp. 1-7

Author(s):

Irwansyah ◽

Junaedi ◽

Suparman

Keyword(s):

Birth Weight ◽

Reproductive Performance ◽

Artificial Insemination ◽

Secondary Data ◽

Birth Spacing ◽

Calving Interval ◽

Brahman Cattle ◽

Bali Cattle ◽

The Relationship

One of the problems that exist in the community is the lack of identification of the reproductive performance of prospective brooders of Bali cattle that are artificially inseminated. The researcher conducted a research to determine the reproductive performance of Bali Cattle inseminated with Brahman Cattle Semen in SECP (Special Effort for Cows to be Pregnant Program) Program in Kolaka Regency. The parameters observed in this study were; artificial insemination's first age (Years), How many times the artificial insemination (AI) was pregnant (S/C), Length of pregnancy (months), Calving Interval (CI) (months), Birth weight (Kilograms), Correlation of AI's first age with birth weight. Sources of date used in this study are primary and secondary data. Data collection techniques carried out in this study were observation and interviews. The date obtained was analyzed descriptively, analysis of variance, average, and to calculate the relationship between variables was analyzed by correlation. Reproductive performance of Bali Cattle inseminated with Brahman Cattle Semen in SECP Program in Kolaka district include; first age AI 23.63±1.99 months, Service per Conception (S/C) 1.56±0.55, gestational age 9.03±0.38 months, Calving Interval (CI) 12.24±0 .52 months, birth weight 27.85 ± 2.96 and the correlation between AI prime age and birth spacing was 0.77.

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MORBIDITY OF LOW BIRTH WEIGHT AND/OR PRETERM CHILDREN COMPARED TO THAT OF THE "MATURE"

PEDIATRICS ◽

10.1542/peds.42.4.590 ◽

1968 ◽

Vol 42 (4) ◽

pp. 590-597

Author(s):

Bea J. van den Berg

Keyword(s):

Birth Weight ◽

Low Birth Weight ◽

Random Sample ◽

Acute Disease ◽

Gestation Period ◽

Equal Size ◽

Preterm Children ◽

Disease Rates ◽

Low Birth Weight Children

Medically attended illnesses were investigated in 357 children, representing 100% of all the low birth weight children in a cohort of some 10,000 white, single, liveborn infants; in a random sample of 180 children who weighed more than 2,500 gm at birth after a gestation period of less than 37 weeks; and in a random sample of equal size of children who weighed more than 2,500 gm at birth after a gestation period of more than 37 weeks. The low birth weight and the preterm children did not suffer higher acute disease rates between discharge from the hospital after their birth and their second birthday than did the "mature" children.

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A simulation study of the effects of the calving interval on milk yields of dairy cows in fixed time periods

Animal Science ◽

10.1017/s0003356100020997 ◽

1992 ◽

Vol 55 (3) ◽

pp. 309-314 ◽

Cited By ~ 4

Author(s):

A. Genizi ◽

H. Schindler ◽

S. Amir ◽

S. Eger ◽

M. Zarchi ◽

...

Keyword(s):

Dairy Cows ◽

Milk Yield ◽

Simulation Study ◽

Fixed Time ◽

Distinct Advantage ◽

Calving Interval ◽

Lactation Curve ◽

Time Periods ◽

Calving Intervals ◽

Linear Decline

AbstractMultiparous cows were assigned before calving to three calving to first insemination intervals. Records of cows conceiving at first or second insemination, were used to construct a model of the lactation curve which incorporated peak production and the effect of progressing pregnancy. The model was used to simulate milk yield during a 4-year period for three production levels and five calving intervals. The model separated the descending part of the lactation curve into a linearly and an exponentially declining component, with the latter becoming distinct at about 20 weeks after conception. Peak yield was negatively correlated with the slope of the linear decline. Within a simulated 4-year period, cumulative milk yields at fixed time periods after calving depended upon the period chosen and the calving-to-conception interval of the cow. Late conceptions resulted in higher cumulative yields at the end of the 1st year, and in lower yields at the 2nd year end, with respect to early conceptions. Smaller differences were found between the intermediate calving intervals. During the 3rd and 4th years the early conceptions had a distinct advantage. Different rates of the linear decline, obtained for the different production levels, changed the magnitude of the yield differences between the calving intervals but not their relative ranking. The model presented offers a means for the suitable choice of the calving cycle according to the length of the period for which a cow is expected to remain in the herd.

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Marginal cost of the calving interval in beef cows is not uniform

Veterinary Record ◽

10.1136/vr.104193 ◽

2017 ◽

Vol 183 (5) ◽

pp. 160-160

Author(s):

Didier Raboisson ◽

Philippe Citerne

Keyword(s):

Marginal Cost ◽

Economic Assessment ◽

Beef Cows ◽

Calving Interval ◽

Replacement Rate ◽

Market Prices ◽

Beef Cow ◽

Management Measures ◽

Feeding Costs ◽

Calving Intervals

To understand the profitability of reproduction management measures, an economic assessment based on a beef cow life simulation was proposed. It accounted for the discounted feeding costs of the dam and its calves for the different periods of their lives up to their sale and for the overall production from calves adjusted by mortality and culling. The calibration was proposed for various combinations of typical French and European situations. The maximal cash flow was observed for the lowest calving interval, corresponding to the maximal number of calves produced. The marginal cost of the calving interval was not uniform: on average, it was twice as high at a calving interval of 360 days (€1/day) as at 500 days (€0.5/day). It was also higher when age at first calving was lower and when culling was late or the replacement rate was low. The results were sensitive to the costs of the calves’ diets and to the market prices for calves. These assessments may assist the evaluation of the profitability of various measures taken in the field when faced with deteriorating calving intervals in beef production.

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