EFFECT OF FEEDING DIETS WITH GRADED LEVELS OF AJAR SEED ON THE GROWTH PERFORMANCE AND NUTRIENT UTILIZATION IN RABBITS

[EN] Thirty six weanling (42 days, average weight 998 g) male New Zealand White Rabbits were divided into 4 groups of 9 each on the basis of body weight. Four isonitrogenous (18% CP) and isocaloric (3.0 Kcal DE /g) concentrate mixture (T1. T2. T3 and T4) containing O, 9, 18 and 27% Ajar seed kernel (ASK) replacing a mixture of wheat bran and cereals were prepared. Rabbits of group 1, 2, 3 and 4 were fed individually on their respective concentrate mixture (T1. T2. T3 and T4) and green paragrass in the ratio of 80 : 20, on dry matter basis for 42 days. Daily feed intake and changes in weekly body weight were recorded. At the end of the feeding tria! 9 animals were slaughtered to determine the dressing percentage. Average daily gain was 25.92, 22.61, 18.14 and 10.58 g with feed/ gain ratio of 3.47, 3.93, 5.24 and 9.79 in group 1, 2, 3 and 4 respectively. A metabolism tria! of 5 days duration in the last week in 4 rabbits per group revealed no significan! difference on dry matter intake, however, digestibility of nutrients, balances of nitrogen and energy differed significantly among the groups. No incidence of mortality was recorded. Dressing percentage was linearly decreased along with increase level of ASK in group 3 and 4. Higher level of ASK (18 and 27%) in diet depressed growth rate, feed I gain ratio, digestibillty, balances of nutrient and dressing percentage in rabbits. Ajar seeds kernel could be incorporated into the diets of growing rabbit up to a level of 9 % as a replacement of a mixture of wheat bran and cereal grain wlthout any adverse effect on performance[FR] Trente six lapins sevrés (42 jours, poids vif moyen 998g), males et femelles Néo-zélandais Blancs, ont été divisés en 4 groupes de 9 chacun tenant compte de leurs poids vifs. On a fabriqué quatre aliments concentrés (T1. T2, T3 et T4) isoprotéiques (18% CP), isocaloriques (3.0 Kcal DE /g) contenant O, 9, 18 et 27% de graines décortiquées de Lagerstroemia flos-reginae (ASK) en remplacement d'un mélange de son de blé et de blé. Les quatre groupes de lapins ont été nourris avec leurs aliments respectifs (T1, T2, T3 et T4) plus de l'herbe de Para fraiche aux taux de 80 : 20, compte tenu de la matiére séche, pendan! 42 jours. La consommation journaliére et les changements de poids hebdomadaire ont été enregistrés. A la fin de l'expérimentation, 9 lapins ont été abattus afin de déterminer le rendement de la carcasse. La croissance moyenne quotidienne a été de 25.92, 22.61, 18.14 et 10.58 g avec un indice de consommation de 3.47, 3.93, 5.24 et 9.79 pour les groupes 1, 2, 3 and 4 respectivement. Une mesure digestibilité duran! les 5 jours de la derniére semaine, sur 4 lapins par groupe, n'a pas révélé de différence significative dans la consommation de matiére séche, mais la digestibilité des nutriments, la balance protéines/énergie différent significativement selon les groupes. Aucune incidence sur la mortalité n'a été constaté. Le rendement de la carcasse décroit de fac;;on linéaire avec l'accroissent du taux d'incorporation de l'ASK pour les groupes 3 et 4. Les taux d'incorporation les plus élevés (18 et 27 %) diminuent la vitesse de croissance, l'indice de consommation, la digestibillté, l'équilibre nutritionnel ,le rendement de la carcasse. Les graines décortiquées de Lagerstroemia flos-reginae peuvent etre incorporées dans un aliment pour lapin jusqu'a un taux de 9%, en remplacement de son et grain de blé, sans influence néfastes sur les performances.Saikia, G.; Baruah, K. (2000). EFFECT OF FEEDING DIETS WITH GRADED LEVELS OF AJAR SEED ON THE GROWTH PERFORMANCE AND NUTRIENT UTILIZATION IN RABBITS. World Rabbit Science. doi:10.4995/wrs.2000.422SWORD08

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Selection of rice genotypes for lower methane emission

Methane emission from paddy fields can vary with rice cultivars, growth stages of the rice plants (Oryza sativa L.) and environmental conditions. Efforts are being made to study methane emission from rice paddies in different ways. In particular, selection of rice cultivars that emit less methane is practical because it does not change farmer practices. Assam state is a rice-growing state of the northeastern part of India. Assam state is very rich in the rice genepool. Here, we screened rice cultivars popularly grown during the monsoon season of Assam. Five traditional cultivars and five high-yield modern cultivars were grown in the field. Methane emission was measured for the whole crop-growing season. Crop growth parameters including plant height, tiller number, leaf number, plant biomass, leaf area index and grain yield were recorded. Soil parameters such as soil temperature, soil pH and soil organic carbon were also recorded. Our results show that the methane emission of rice cultivars ranged from 8.83 g m$^{-2 }$ to 18.63 g m$^{-2}$ over three and a half months. Variety IR 36 was found to emit the least methane amongst all the cultivars. Five cultivars were identified as high methane-emitting cultivars ($>$15 g m$^{-2})$. Methane flux values of the crop-growing season exhibited a positive correlation with leaf number, tiller number and leaf area index. Traditional rice cultivars with profuse vegetative growth recorded higher methane flux values compared with high-yielding varieties. This study clearly suggests the possibility of reducing methane emission from the wetland rice ecosystem through appropriate selection of rice cultivars to achieve an economically feasible and technically sound mitigation option of methane emission from farmers' fields

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Nitrous oxide (N2O) is a major greenhouse gas contributing to global warming. Rainfed rice fields are considered to be a notable source of atmospheric N2O emission. To investigate the dynamics of N2O emission and the relationship of plant and soil properties with emission of N2O in rice, a field experiment was conducted. The five popularly grown rice varieties Luit, Disang, Kapilli, Siana and Phorma were grown in the fall season under rainfed conditions. N2O emission was measured at seven-day intervals starting from the day of transplanting for the whole crop growing season. We also measured soil parameters, e.g. soil pH, soil temperature, soil organic carbon, soil NO$_{3}^-$-N, and field water level; and plant growth parameters: root-shoot dry weight, root length and leaf area. Our results show that N2O emission from the plant varieties ranged from 1.24 μg to 379.40 μg N2O-N m−2h−1. Seasonal N2O emission from the rice varieties ranged from 77 to 150 mg N2O-N m−2. Root dry weight, shoot dry weight, soil NO$_{3}^-$-N, root length, leaf area and field water showed relationships with N2O emission. Root and shoot weight, soil NO$_{3}^-$-N and field water were found to be the main factors influencing N2O emission. The varieties Phorma and Siana, with lower grain productivity but profuse vegetative growth, showed higher seasonal N2O emission

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Not AvailableGestational disorders like abortions are of great concern due to the loss of fetus in yaks. Therefore, Gestational disorders like abortions are of great concern due to the loss of fetus in yaks. Therefore, a basic study was carried out to study the epidemiology of abortion in yaks managed under farm condition in semi-intensive system of management. Data of 254 pregnancies were collected over a period of 6 years from 2005 to 2010 from the farm records. The overall incidence of abortion was found to be 16.54 % out of which 80.95 % abortions were recorded in pleuriparous and 19.05 % in the primiparous animals. Month wise analysis showed that maximum abortions were recorded in the month of June followed by May. Maximum abor . Maximum abortions wer tions were recorded during the late gestation phase followed by mid gestation and early gestation stageNot Availabl

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Not AvailableComparative nutrient utilization, growth and rumen enzyme profile of Mithun (Bos Frontalis) and tho-tho catle (Bos indicus) fed on tree-leaves-based rationNot Availabl

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Not AvailableMithun, also known as ‘Cattle of Mountain” is an important bovine species of north-eastern hill region of India and also of China, Myanmar, Bhutan and Bangladesh. This magnificent massive bovine is presently reared under free-range condition in the hill forests at an altitude of 1000 to 3000 m above mean sea level. Mithun plays an important role in the socio-economic and cultural life of the local tribal population. Due to dwindling population of mithun over the years and gradual denudation of free range forest areas for mithun grazing along with the biotic and abiotic stress, there is urgent need of scientific intervention for proper management as well as conservation of this species. Application of various biotechnological tools like artificial insemination, estrus synchronization for timed-AI, multiple ovulation and embryo transfer, rumen microbial manipulation and modern breeding techniques may be of great use for faster multiplication and propagation of this species in near future.Not Availabl