Estimation of Genetic Parameters for Economic Traits in Dairy Cattle of Bangladesh

Rahman, MM; Islam, Rejoanoul; Rahman, Mohammad Mubinur; Haque, Md. Mamunul; Das, Tanuza

doi:10.3923/ajava.2007.9.14

Cited by 7 publications

(4 citation statements)

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“…Male's birth weight was higher in the first and second parity than in the third. This finding is in line with the findings in Sudan Nubian goats (Elabid 2008) and Sahelian goat in Nigeria (Otuma and Osakwe 2008).The overall birth weight was not significantly affected by parity. Birth weight was generally higher than in the Nuba Mountains (Elbukhary 1998;Mudawi 2002) and less than in the Nubian goats (Elabid 2008).…”

supporting

confidence: 91%

“…There were differences between years in birth weight and was significantly higher in the first year for males. These effects were similar to those in Nubian goats (Elabid 2008) and Sahelian goats (Otuma and Osakwe 2008) and were mainly nutritional. Tagger birth weight was less than Nubian goats (Elabid 2008) and was higher than Nigerian Sahelian goat (Otuma and Osakwe 2008) and West African Dwarf goat in Ghana (Baiden 2007).…”

supporting

confidence: 78%

“…It was higher in winter in males and was higher in summer and autumn in females. Similar seasonal differences in birth weight were found in Sahelian goat in Nigeria (Otuma and Osakwe 2008) and West African Dwarf goat in Ghana (Baiden 2007). Seasonal variations in birth weight were mainly due to variations in feeds quantity and quality.…”

supporting

confidence: 68%

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A Note on the Reproductive Performance of Tagger Goat in the Gezira, Sudan

Elimam¹,

Ombabi²

2023

uofkjas

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The objective of this study was to determine the effects of improvedmanagement and nutrition on the reproductive performance of a flock of Tagger goatsfrom Eldaleng area, the Nuba Mountains. It was conducted at Wad Medani , Sudan, fromJune 2006 to July 2008. The goats were mainly grazed on farm and well managed.Individual records were kept for each animal, and the data were statistically analysed forreproductive characteristics. Kidding percentage was 100% in the two years and wasmainly in summer. Sex ratio (males to females) was 57.14: 42.86 in the first year and54.05: 45.95 in the second year. Twinning rate increased from 17.39% in the first year to48.0% in the second year, and number of kids born /doe increased from 1.17 in the firstyear to 1.48 in the second year. Mean age at first kidding was 365.67 days (285- 438)and mean kidding interval was 258.85 days (169- 380). The overall birth weight was1.73, 1.69 and 1.70 kg for the first, second and third parities, respectively. Seasons hadno significant effects on overall birth weight, and it was highest in summer (1.74)followed by autumn (1.71) and then winter (1.63).There were differences between yearsin birth weight and was generally higher in the first year. Singles were heavier at birththan twins. Birth weight had a significant correlation with doe weight at kidding. Doeage had significant correlations with doe body condition score and doe weight atkidding. The results showed that Tagger reproductive performance was improved in theGezira area, especially in the second year, than in Eldaleng area.

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supporting

confidence: 91%

supporting

confidence: 78%

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A Note on the Reproductive Performance of Tagger Goat in the Gezira, Sudan

Elimam¹,

Ombabi²

2023

uofkjas

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“…Current methods of genomic selection make it possible to identify genes responsible for the transmission of increased productivity, resistance to diseases and their fixation in the population [13,14,15]. Therefore, the basis for increasing the efficiency of dairy farming and, as a consequence, increasing milk production is the genetic improvement of the breeding base, which should be based on the latest scientific achievements, the development and implementation of up-to-date systems for improving economic and biological qualities.…”

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confidence: 99%

Scientific support and advanced research in dairy farming in the Russian Federation

Marinchenko

2021

E3S Web Conf.

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Increasing the output of agricultural products and improving their quality is one of the most important tasks of ensuring the food security of the Russian Federation. The solution to this problem is impossible without the introduction of up-to-date technologies that ensure the competitiveness and output growth, which are the result of scientific research and development. The basis for increasing the efficiency of dairy farming and, as a consequence, increasing milk production is the genetic improvement of the breeding base. The organization of selection and breeding work based on the use of our own genetic resources is a strategic task of the industry, which allows increasing the output of livestock products, reducing the technological import dependence of animal husbandry and minimizing the risk of the introduction of infectious diseases into the country. At the same time, the breeding base of dairy cattle breeding is on average 13.8% of the total livestock in the Russian Federation. The breeding progress is ensured by agricultural organizations, in which less than half of the total head of cows is concentrated. They are also the main consumers of research and development results. The purpose of the study is to analyze the state of the industry and its scientific potential, as well as formulate proposals for improving scientific support to create conditions for solving the tasks set by the state.

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Cross-breeding cattle for milk production in the tropics: achievements, challenges and opportunities

Galukande

Mulindwa

Wurzinger

et al. 2013

Anim. Genet. Resour.

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SummaryThis paper reviews experiences with cross-breeding for milk production in the tropics. Data were compiled from 23 different studies evaluating the performance of different grades of cross-bred animals as well as local breeds. Relative performance of indigenous breeds compared with different grades of cross-breeds was calculated for three climatic zones. Traits considered were milk yield per lactation, age at first calving, services per conception, lifetime milk yield and total number of lactations completed. At 50 percent Bos taurus blood, lactation milk yields were 2.6, 2.4 and 2.2 times higher than those of local cattle in the highland, tropical wet and dry, and semi-arid climatic zones, respectively; lactation lengths increased by 1.2, 1.2 and 1.9 months in the above-mentioned climatic zones, respectively; there was a reduction in calving interval by 0.8 times and in age at first calving by 0.9 times. Similarly, cross-breds with 50 percent B. taurus genes had 1.8 times higher lifetime milk yields and a 1.2 times higher number of total lactations. Although cross-breeding faces a number of challenges such as better infrastructure, higher demand for health care, there are many advantages of using it. These are higher production per animal, higher income for the families and provision of high-value food. It is therefore likely to continue to be an important livestock improvement tool in the tropics in the future, where farmers can provide sufficient management for maintaining animals with higher input requirements and access to the milk market can be secured.Keywords: Cattle, cross-breeding, milk production, tropics ResumenEste artículo hace un repaso por las experiencias obtenidas con el cruzamiento de razas para la producción de leche en los trópicos. Se recopilaron datos de 23 estudios diferentes que evaluaron los rendimientos de animales con distinto grado de cruce así como de animales de razas autóctonas. Se compararon los rendimientos de las razas autóctonas con los de animales con distinto grado de cruce para tres zonas climáticas. Las características consideradas fueron el rendimiento lechero por lactación, la edad al primer parto, el número de servicios por concepción, la producción lechera total a lo largo de la vida del animal y el número total de lactaciones completadas. Con un 50 por ciento de sangre Bos taurus, los rendimientos lecheros por lactación fueron 2,6, 2,4 y 2,2 veces mayores que los del ganado bovino autóctono en las zonas climáticas de las Tierras Altas, Tropical Húmeda y Seca y Semiárida, respectivamente; la duración de la lactación se incrementó en 1,2, 1,2 y 1,9 meses en las zonas climáticas anteriormente mencionadas, respectivamente; el intervalo entre partos y la edad al primer parto se redujeron, respectivamente, 0,8 y 0,9 veces. Asimismo, los animales cruzados con una genética 50 por ciento Bos taurus tuvieron rendimientos lecheros, para la totalidad de su vida productiva, 1,8 veces mayores y un número total de lactaciones 1,2 veces mayor. Si bien el cruzamiento implica afr...

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Estimation of Genetic Parameters for Economic Traits in Dairy Cattle of Bangladesh

Cited by 7 publications

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A Note on the Reproductive Performance of Tagger Goat in the Gezira, Sudan

A Note on the Reproductive Performance of Tagger Goat in the Gezira, Sudan

Scientific support and advanced research in dairy farming in the Russian Federation

Cross-breeding cattle for milk production in the tropics: achievements, challenges and opportunities

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