A comparative study on the performances of F1 crossbred cows under rural conditions

Nahar, T. N.; Islam, Md. Nurul; Hasnath, M. A.

doi:10.5713/ajas.1992.435

Cited by 32 publications

(34 citation statements)

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“…There was a statistically significant variation (P<0.01) in the length of dry period of crossbred and indigenous cows. These results were in agreement with Ali et al (2000) and Nahar et al (1992). Ali et al (2000) observed that average dry period for crossbred and indigenous cows were 97.2 and 141 days, respectively.…”

Section: Productive and Reproductive Parameters Of Crossbred And Indisupporting

confidence: 83%

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Study of Management and Production System of Small Scale Dairy Farm in a Selective Rural Area of Bangladesh

Khan¹,

Baset

Fouzder

2013

J Sci Found

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The present study was conducted to determine the present status including general information, feeding, breeding, housing, and milking etc. and costs & returns of small dairy farms, to compare the productive and reproductive performance of crossbred and indigenous cows and to make recommendation for development of small scales dairy farm. With this view, the empirical data were collected by using pre tested questionnaire. The study was conducted at 8 thanas in Mymensingh district, and four months-long survey was diminished on thirty small dairy owners. It appeared from the study that 57% farm owners belong to business class and remaining 43 per cent to different categories. Fifty three per cent took dairying as a side-business whereas only 47 per cent took it as a main business enterprise. Major percentage of farm owner education level that was Higher Secondary level (60%) and the average number of animal per farm was 13.01. The average monthly income of farm owners found in the study area was Tk. 4387. It was observed that farm owners had 85.4% crossbred (like Friesian cross and Jersey cross) and was 14.6% indigenous cattle, and 87% farmers used artificial insemination and rest used both artificial and natural services. Daily milk yield/cow/farm was 4.27 and 1.78 liters for a crossbred and indigenous dairy cow, respectively. It was estimated that the rearing cost of dairy cow was Tk. 67.5/cow/day and return from rearing dairy cow was Tk. 85.2/cow/day. The net return was Tk. 17.7/cow/day from crossbred in the study area and cost benefit ratio was 1: 1.26. The study showed that there were significant (P<0.01) differences within the dry period, service per conception, calving to first service, highest and lowest milk production and lactation period of crossbred and indigenous dairy cows. The study also showed non-significant differences within calving interval for crossbred and indigenous. Incase of small dairy farming, the farms were facing a lot of problems such as scarcity of feeds and fodder, high price of concentrate and lack of technical knowledge. Although the dairy cow owners face problems, the study observed that there were potentials particularly for the small dairy farmers. The small farmers by keeping 8-10 crossbred cows could earn a modest living by adopting small dairy farming as a profession

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Section: Productive and Reproductive Parameters Of Crossbred And Indisupporting

confidence: 83%

“…Ali et al (2000) observed that average dry period for crossbred and indigenous cows were 97.2 and 141 days, respectively. Nahar et al (1992) found that the average dry period for F1 graded Sindhi and Sahiwal as 146 and 127 days, respectively.…”

Section: Productive and Reproductive Parameters Of Crossbred And Indimentioning

confidence: 99%

Study of Management and Production System of Small Scale Dairy Farm in a Selective Rural Area of Bangladesh

Khan¹,

Baset

Fouzder

2013

J Sci Found

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“…There was a statistically significant variation in the length of dry period of cross-bred and indigenous cows (p<0.01) (Table1). This result was in agreement with Nahar (1987) found the average dry period for F 1 graded Sindhi and Sahiwal as 145.90±4.29 and 127.21±5.84 days respectively.…”

Section: Calving To First Servicesupporting

confidence: 82%

“…The length of calving interval statistically significant differed (p<0.01) in between crossbred and indigenous cows (Table 1). This result was contradicted with Nahar (1987) who studied calving interval of 180 crossbred progenies under urban conditions. In her study the mean calving interval of Sindhi and Sahiwal, cows were 414.54 and 428.58 days respectively.…”

Section: Calving Intervalcontrasting

confidence: 48%

Comparative Performance Study on the Crossbreds and Indigenous Cows under Small Holder Dairy Farming

.¹,

Khan²,

Islam³

et al. 2000

Pakistan J. of Biological Sciences

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Abstract:The study was undertaken to compare the productive and reproductive performance of crossbred and indigenous cows as well as the relative profitability of crossbred and indigenous cows under small holder dairy farming. From this study it was seen that the milk yield and lactation period were 4.10 litre/day and 266 day respectively in crossbred and 2.28 litre/day and 220 days respectively in indigenous cows. The variation in the length of post partum heat period and calving to first services were not statistically significant between the crossbred and indigenous cows. The length of calving interval were statistically significant be to crossbred and indigenous cows. Among the costs (Feed cost, housing cost labor cost, housing cost labor cost, treatment cost and A.I. charge), except the housing costs all costs were statistically significant (p<0.01) between the crossbred and indigenous cows. The returns (sale proceeds of milk, value of cowdung, value of calf and price of empty gunny bags) of the crossbreds were higher than the indigenous cows.

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“…Thus, the descendants of the Pyrenean ibex (Capra pyrenaica) and the domestic goat (Capra hircus) retain the ability to reproduce [5]. Hybrids of bovine cattle (Bos taurus) with Indian cattle (Bos indicus) [14], American bison (Bison bison), bison (Bison bonasus) [13,15], banteng (Bos javanicus) and gaur (Bos gaurus) are fertile [16,17]. The offspring of crossing the domestic sheep with wild species, argali (Ovis ammon), mouflon (Ovis orientalis musimon), snow sheep (Ovis nivicola) is breedy and can be the basis for the creation of a new selection type of sheep, characterized by excellent adaptation to complex relief and natural climatic conditions and serving as a source of dietary meat [18,19].…”

Section: Introductionmentioning

confidence: 99%

BIODIVERSITY ASSESSMENT IN INTERSPECIES HYBRIDS OF THE GENUS Ovis USING STR AND SNP MARKERS

Deniskova¹,

Dotsev²,

Багиров³

et al. 2017

S-h. biol.

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A b s t r a c tIntrogression of wild and domestic species is regarded as a promising way to improve genetic diversity in populations of farm animals. The aim of our study was to investigate the influence of introgression of the wild species (argali) on genetic diversity of interspecific hybrids with domestic sheep using STR and SNP markers. Samples included original parental forms: Romanov sheep (ROM, n = 35), representing the «domestic» form (Ovis aries), and argali (OAM, n = 10), characterizing the «wild» form (O. ammon polii), male hybrid F1, obtained by surgical insemination of Romanov ewe by argali sperm (F 1 , n = 1), and back crosses obtained by crossing Romanov ewes with hybrid F 1 ram (BC 1 , n = 38) and hybrid BC 1 rams (BC 2 , n = 14). The analysis of 11 STR loci (BLT001B, CSRD247, FCB20, CSAP36, MAF65, McM147, OarCP49, D5S2, HSC, BMS2213 and INRA23) was carried out on the ABI PRISM 3130xl genetic analyzer. For SNP genotyping we used Ovine SNP50K BeadChip. After quality control, 9 STR loci and 8591 SNPs were left for the analysis. Statistical calculations were performed in GenAIEx 6.5, PLINK v1.07, HP-Rare 1.1, GENETIX 4.05 and STRUCTURE 2.3.4. Regardless the type of DNA marker, ROM, compared with OAM, was characterized by a higher level of genetic diversity, assessed by observed heterozygosity (H o ) and allelic richness (Ar). Hybridization resulted in an increase in this parameter in the F 1 hybrid. In groups BC 1 and BC 2 , the H o values, calculated per STR and SNP, were higher than similar in the parental forms. In BC 1 and BC 2 groups the Ar values, estimated by SNP-markers, were reducing in comparison with F 1 and were intermediate in comparison with the same in the parental forms. The changes in the Ar values, based on STR data, had the character of a trend in groups BC 1 and BC 2 . Principal component analysis (PCA), performed by using SNP-markers, showed a more objective distribution pattern of the studied animals according to their origin in the coordinates space. In case of SNP data, PC1 was sufficient for clearly differentiation of groups OAM, ROM, F 1 and BC 1 + BC 2 . In summary, the first two components (PC1 and PC2) were responsible for 25.87 % of the SNP variability and for only 12.46 % of the STR variability. Principal component 3 (PC3), which was responsible for 6.16 % of SNP variability, made it possible to differentiate BC 1 and BC 2 groups, whereas at the application of STR these groups were localized as a common cluster. The results of STRUCTURE analysis showed that association of the investigated individuals into clusters, based on STR-profiles, did not match their origin, while the formation of clusters by SNP-markers was corresponded to the actual origin of animals. We found that both types of tested DNA markers were suitable for detecting changes in genetic diversity through hybrids generation. Nevertheless, a significant advantage of using multiple SNP-markers for the differentiation of hybrids from the parental forms was shown.

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A comparative study on the performances of F1 crossbred cows under rural conditions

Cited by 32 publications

References 0 publications

Study of Management and Production System of Small Scale Dairy Farm in a Selective Rural Area of Bangladesh

Study of Management and Production System of Small Scale Dairy Farm in a Selective Rural Area of Bangladesh

Comparative Performance Study on the Crossbreds and Indigenous Cows under Small Holder Dairy Farming

BIODIVERSITY ASSESSMENT IN INTERSPECIES HYBRIDS OF THE GENUS Ovis USING STR AND SNP MARKERS

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