Calving interval

The Nordic Red Cattle (NRC) consists of animls belonging to the Danish Red, Finnish Ayrshire, and Swedish Red breeds. Compared to the Holstein breed, NRC animals are smaller, have a shorter calving interval, lower mastitis incidence and lower rates of stillborn calves, however they produce less milk, fat and protein.

11p vinarcissa 21-03-2023 2 1   Download

The present study on Murrah buffaloes was conducted at Cattle and Buffalo Farm (Livestock Production and Management Section), ICAR-Indian Veterinary Research Institute. Reproductive data pertaining to post partum interval to estrus (PPIE), service period (SP), number of services per conception (NoS/C) and breeding efficiency (BE) were recorded and analysed to examine the effects of pre-partum body condition score, lactation order, age at calving, season of calving, body weight at calving and dry period on various reproductive traits.

7p chauchaungayxua11 23-03-2021 15 2   Download

he present investigation was conducted to study the effect of various non genetic factors like farm, parity, period of calving and season of calving on different production traits like total lactation milk yield (TLMY), 305 day milk yield (305MY), peak yield (PY), milk yield per day of lactation length (MY/LL) and milk yield per day of calving interval (MY/CI) in Murrah buffaloes. The data analysed include records of 2959 buffaloes, progeny of 219 sires maintained over a period of 24 years (1992-2015) at Buffalo research centre (BRC), LUVAS, Hisar and Animal farm ICAR-CIRB, Hisar.

8p trinhthamhodang1218 26-02-2021 11 2   Download

Range of abduction often decreases during Legg-Calvé-Perthes Disease (LCPD) disease. However, a good range of abduction is required during the course of LCPD, especially when containment surgery should be performed.

7p vimariana2711 22-12-2020 4 1   Download

The present study was conducted on 308 Sahiwal cows sired by 38 bulls spared over a period of 32 years (1981- 2012), maintained at instructional dairy farm and AICRP on cattle -Sahiwal (field unit) at G.B.P.U.A. & T., Pantnagar Uttarakhand and Chak Ganjaria Government Cattle Farm Lucknow, Uttar Pradesh.

5p trinhthamhodang1216 19-11-2020 7 2   Download

Secretion of prostaglandin F2α at the time of maternal recognition of pregnancy leads to embryonic loss. Early embryonic losses are one of the important causes of repeat breeding which increases the calving interval and leads to economic losses to farmers. Non-steroidal anti-inflammatory drugs inhibit the synthesis of PGF2α. The present study was designed to study the effect of treatment by GnRH analogue - Buserelin acetate, Progesterone (P4) and Tolfenamic acid on 32 repeat-breeding crossbred cattle aged 3-8 years.

8p caygaocaolon6 30-07-2020 13 2   Download

Embryonic mortality (EM) is a major concern in the dairy industry across the world and it occurs due to loss of conceptus following fertilization until days 42-45 of pregnancy. The present study was carried out with the objective to detect EM in the crossbred cattle at the University Livestock Farm, Mannuthy, Kerala Veterinary and Animal Sciences University during the period from September 2017 to August 2019. Among the breedable animals inseminated at spontaneous oestrus, non-return animals (n=362) were selected for the study.

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Present study was based on three genetic groups viz., Jersey × Local (G1), Holstein Friesian × Local (G2) and Local (G3) cows, data collected from the field condition of Allahabad district, to determine the effect of service period, gestation period and calving interval. High estimates of heritability (above 60%) in broad sense were recorded for tall the characters under study.

8p angicungduoc5 12-06-2020 12 1   Download

Cattle is one of the major livestock species for milk production, contributing significantly to the economy of our country and continuous milk production needs regular conception and successful calf crop production. World-over, for dairy economy, there is emphasis on one calf per year per cattle. Successful calving follows survival of the conceptus through embryonic and fetal development.

16p nguaconbaynhay5 16-05-2020 7 1   Download

Micro-mineral deficiencies of Zinc, Manganese, Iodine and Copper have been identified in blood plasma and serum levels of livestock in state of Punjab. Eighteen female buffalo calves of 15 day of age were randomly divided into 2 groups of nine each and fed calf starter of ingredient composition as per the prevailing feeding practice at the university dairy farm containing 0.66% zinc and 0.1% copper (organic and inorganic) in the mineral mixture as per specifications along with green fodder and milk. The growth study was of 120 days.

7p angicungduoc4 26-04-2020 6 0   Download

Metritis and endometritis are the very common postpartum uterine infections that results into infertility in dairy cattle, production loss and economical losses to the farmer. As postpartum uterus favors bacterial growth so it is frequently found in almost of unhygienic environment reared animals. Breaching of birth canal during dystocia, retention of placenta, wet environment during winter season and immunosuppression due to many reasons are the risk factors for the bacteria invasion to uterus.

19p quenchua2 16-12-2019 15 2   Download

The present investigation was conducted on records of 2959 buffaloes, progeny of 219 sires over a period of 24 years(1992-2015) maintained at Buffalo research centre(BRC), LUVAS, Hisar and Animal farm ICAR-CIRB, Hisar, Four sire evaluation procedures such as ordinary least squares (OLS), regressed least squares (RLS), Derivative free restricted estimated maximum likelihood (DFREML) and best linear unbiased prediction (BLUP) based on estimated breeding value of performance traits such as first lactation milk yield (FLY), first lactation peak yield (FPY), first lactation milk yield per day of...

8p cothumenhmong1 08-12-2019 15 1   Download

The present study was conducted on 91 Tharparkar cows maintained at the Livestock Research Station, Beechwal, Bikaner for 11 years i.e. from 2006 to 2016. The data were analysed with the objective of performance appraisal of Tharparkar cattle with respect to production traits and to study the effect of genetic factor i.e. sire group and non genetic factors i.e. period and season of calving on production traits.

5p cothumenhmong1 08-12-2019 8 1   Download

HF × Gir cattle, Genetic parameter, First lactation traits The present investigation was carried out with the objective of performance appraisal of HF × Gir cattle with respect to production and reproduction traits. The performance records of 421 HF × Gir half breed cattle sired by 48 bulls were collected for production and reproduction traits spread over a period of 39 years (1977 to 2015) from ResearchCum Development Project on Cattle, Mahatma Phule Krishi Vidyapeeth, Rahuri District Ahmednagar (Maharashtra).

7p chauchaungayxua1 04-12-2019 39 1   Download

Failure to grow (ill-thrift) in calves has a negative effect on animal production and health. The present study was carried out from November, 2009 to May, 2013 to investigate the risk factors of ill-thrift in buffalo calves. A total of 344 calves at 78 smallholder farms were selected randomly. A questionnaire was designed to include managemental, nutritional and disease risk factors. Serum selenium, copper, zinc, iron, calcium, phosphorus and magnesium were measured.

7p trinhthamhodang1 16-11-2019 23 0   Download

Reproductive traits describe the animal’s ability to conceive, calve down and suckle the calf to weaning successfully (Davis 1993). These traits are important since they affect the herd size and off take. Reproductive performance is commonly evaluated by analysing female reproductive traits. The traits regularly considered include age at first calving, calving interval and calving rate. Male fertility traits are rarely included in genetic evaluations despite their influence on the female reproductive performance. These traits include semen quality and quantity traits and scrotal size.

61p conduongdinhmenh 07-05-2013 49 3   Download